Kwiga kuri Pilote Ikizamini cyumusaruro wa PVC Resin ya Hydroxypropyl Methyl Cellulose

Gahunda yo kubyaza umusaruro HPMC yo mu gihugu yatangijwe, kandi uruhare runini rwa HPMC yo mu gihugu mugikorwa cyo kubyaza umusaruro PVC ningaruka zabyo ku bwiza bwa resin ya PVC rwizwe mu kizamini cy’icyitegererezo. Ibisubizo byerekana ko:①Imikorere ya HPMC yo murugo ni nziza, kandi imikorere ya PVC resin yakozwe ihwanye nubwiza bwa PVC resin ikorwa nibicuruzwa bya HPMC bitumizwa mu mahanga;②Iyo HPMC yo murugo ikoreshwa mubikorwa bya PVC, PVC irashobora kunozwa no guhuzwa neza muguhindura ubwoko nubunini bwa HPMC Imikorere yibicuruzwa;③HPMC yo murugo irakwiriye kubyara umusaruro utandukanye wa PVC. Ibice bya PVC resin byakozwe bifite firime yoroheje n'umucyo bifatanye na kase;④Ibicuruzwa bya HPMC murugo birashobora gusimbuza ibicuruzwa bya HPMC byatumijwe hanze.

Amagambo y'ingenzi:PVC; gutatanya; hydroxypropyl methylcellulose

Umusaruro wa HPMC ufite ipamba inoze mu bihugu by’amahanga watangiye mu 1960, kandi igihugu cyanjye cyatangiye guteza imbere HPMC mu ntangiriro za 1970. Kubera inzitizi z’ibikoresho, ikoranabuhanga n’ibindi bintu, ubwiza ntibwashoboraga guhagarara neza, kandi isura yari fibrous. Kubera iyo mpamvu, HPMC isabwa ninganda za PVC resin, inganda zimiti, ibikoresho byo mu rwego rwo hejuru, amavuta yo kwisiga, ibyuma, ibiribwa n’inganda zose zishingiye ku bicuruzwa bitumizwa mu mahanga, cyane cyane biva muri Amerika no mu Buyapani, kandi HPMC ikorerwa monopoliya y’amahanga. . Mu 1990, Minisiteri y’inganda y’inganda yateguye ibice bireba kugira ngo ikemure ibibazo by’ibanze, kandi itanga ibicuruzwa byujuje ubuziranenge bw’inganda za PVC, bimenya aho HPMC iherereye. Mu myaka yashize, uruganda rwiza rwa HPMC rwashyizeho byimazeyo igitekerezo cyiterambere cyo guhanga udushya, guhuza ibikorwa, icyatsi, gufungura, no kugabana, gutsimbarara ku iterambere rishingiye ku guhanga udushya, kandi bigera ku iterambere ryiza cyane binyuze mu guhanga udushya, iterambere ry’ubumenyi, no kwihutisha guhindura y'ingufu zishaje kandi nshya. Byasabwe n’ishyirahamwe ry’inganda zikomoka kuri peteroli n’inganda mu Bushinwa, GB / T 34263-2017 “Hydroxypropyl Methyl Fiber yo gukoresha inganda”, washyizweho na komite ishinzwe tekinike y’ubushinwa kandi yemejwe n’ishami rishinzwe gutegura, yatangajwe mu 2017, kandi iratangazwa. yarekuwe mu gihugu hose ku ya 1 Mata 2018. yashyizwe mu bikorwa ku mugaragaro. Kuva icyo gihe, hari amahame yinganda za PVC kugura no gukoresha ibicuruzwa bya HPMC.

1. Ubwiza bw'ipamba

30 # ipamba inoze iri muburyo bwa fibre nziza munsi ya microscope. Ipamba ikuze ifite amagana yibanze ya fibre yibanze mugice cyayo, kandi fibre yibanze yibanze hamwe hamwe na magana. Iyi fibril bundles Fibre fibre ihujwe muburyo butandukanye. Ibi bifasha mu gukora selile ya alkalize hamwe nuburinganire bwurwego rwa etherification, kandi bifasha kunoza ubushobozi bwo kubika kole ya HPMC mugihe cya PVC polymerisation.

30 # ipamba itunganijwe ikoresha imyenda ya pamba ifite ubukure bwinshi na polymerisiyasi nkeya nkibikoresho fatizo, inzira yumusaruro iragoye, igomba kwezwa, kandi nigiciro cyumusaruro ni kinini. 1000 # ipamba itunganijwe ikoresha imyenda ya pamba ifite ubukure bwinshi kandi bwa polymerisiyasi nkibikoresho fatizo, inzira yumusaruro ntabwo igoye, kandi nigiciro cyo gukora ni gito. Kubwibyo, 30 # ipamba itunganijwe ikoreshwa mugukora ibicuruzwa byo mu rwego rwo hejuru nka PVC resin / imiti / ibiryo, naho ipamba 1000 # itunganijwe ikoreshwa mugukora ibikoresho byubaka cyangwa ahandi hantu hasabwa.

2. Imiterere, icyitegererezo nigikorwa cyibicuruzwa bya HPMC

2.1 Ibyiza byibicuruzwa bya HPMC

HPMCni uburozi, butagira impumuro nziza, uburyohe bwera cyangwa butari bwera fibrous cyangwa ifu ya granular ikozwe mu ipamba isanzwe itunganijwe nkibikoresho nyamukuru. Nibice bya sintetike, idakora, viscoelastic polymer, ibintu bitari ionic. Abashinwa bita hydroxymethyl propyl selulose, selile hydroxypropyl methyl ether, na hypromellose, naho formula ya molekile ni [C6H7O2 (OH) 2COOR] n.

Ingingo yo gushonga ya HPMC ni 225-230°C, ubucucike ni 1.26-1.31 g / cm³, misa igereranije ni 22.000, ubushyuhe bwa karubone ni 280-300°C, kandi hejuru yubushyuhe ni 42-56 mN / m (igisubizo cyamazi 2%).

Imiterere yumubiri na chimique ya HPMC ikubiyemo ingingo zikurikira.

. Igipimo cyatsinze 150μm irenze 98.5%, naho igipimo cya 187μm ni 100%. Ibisabwa muri rusange byihariye biri hagati ya 250 na 425μm.

. Gukorera mu mucyo mwinshi, imikorere ihamye yumuti, ibisobanuro bitandukanye byibicuruzwa bifite ubushyuhe butandukanye bwa gel, guhinduka gukemuka hamwe nubukonje, kugabanuka kwijimye, niko bigenda byiyongera, ibisobanuro bitandukanye bya HPMC bifite itandukaniro mubikorwa, kandi gukemura mumazi ntabwo aribyo byatewe nagaciro ka pH.

Gukemura mumazi akonje namazi ashyushye biratandukanye. Ibicuruzwa birimo vitamine nyinshi ntibishobora gushonga mumazi ashyushye hejuru ya 85°C, ibicuruzwa bifite vitamine yo hagati ntibishobora gushonga mumazi ashyushye hejuru ya 65°C, nibicuruzwa bifite vitamine nkeya ntibishobora gushonga mumazi ashyushye hejuru ya 65°C. Amazi ashyushye hejuru ya 60°C. Ubusanzwe HPMC ntishobora gukemuka mumashanyarazi nka Ethanol, ether, na chloroform, ariko igashonga 10% kugeza 80% yumuti wamazi wa Ethanol cyangwa uruvange rwa methanol na dichloromethane. HPMC ifite hygroscopicite runaka. Ku myaka 25°C / 80% RH, kwinjiza ibingana nuburinganire ni 13%, kandi birahagaze neza mubidukikije byumye kandi pH ifite agaciro ka 3.0-11.0.

(3) HPMC ifite ibintu byiza biranga gushonga mumazi akonje ariko ntigashonga mumazi ashyushye. Gushyira HPMC mumazi akonje no kuyikurura birashobora gushonga burundu bigahinduka amazi meza. Ibicuruzwa bimwe bimwe ntibishobora gushonga mumazi ashyushye hejuru ya 60°C, kandi irashobora kubyimba gusa. Uyu mutungo urashobora gukoreshwa mugukaraba no kweza, bishobora kugabanya ibiciro, kugabanya umwanda, no kongera umutekano wumusaruro. Kugabanuka kwibintu bya vitamine, gel ya HPMC yariyongereye, amazi yo kugabanuka yagabanutse, kandi ibikorwa byo hejuru nabyo byagabanutse.

(4) HPMC ikoreshwa nka stabilisateur yo guhagarika no gukwirakwiza muri polymerisation ya vinyl chloride na vinylidene. Irashobora gukoreshwa hamwe na alcool ya polyvinyl (PVA) cyangwa yigenga, kandi irashobora kugenzura imiterere yibice no gukwirakwiza ibice.

(5) HPMC ifite kandi imbaraga zikomeye zo kurwanya enzyme, imiterere ya gel yumuriro (amazi ashyushye hejuru ya 60°C ntishonga, ariko irabyimba gusa), ibintu byiza cyane byerekana firime, pH ihagaze neza (3.0-11.0), Kubika amazi nibindi byinshi biranga.

Hashingiwe ku bintu byiza byavuzwe haruguru, HPMC ikoreshwa cyane mu nganda nk’ubuvuzi, inganda za peteroli, ubwubatsi, ububumbyi, imyenda, ibiryo, imiti ya buri munsi, resinike ya sintetike, coating na electronics.

2.2 Icyitegererezo cyibicuruzwa bya HPMC

Ikigereranyo cyibintu bya mikorerexyl hamwe na hydroxypropyl yibicuruzwa bya HPMC biratandukanye, viscosity iratandukanye, nibikorwa byibicuruzwa biratandukanye.

2.3 Uburyo bwo kubyaza umusaruro ibicuruzwa bya HPMC

HPMC ikoresha ipamba itunganijwe neza nk'ibikoresho fatizo by'ibanze, kandi ikora ifu y'ipamba binyuze mu kuvura. Shira ifu y'ipamba mu isafuriya ihagaritse ya polymerisiyonike, uyikwirakwize inshuro zigera ku 10 zishishwa (toluene, isopropanol nk'umuti uvanze), hanyuma wongeremo urutonde Lye (soda yo mu rwego rwa caustic soda irashonga mbere y'amazi ashyushye), oxyde ya propylene, methyl chloride etherification agent, reaction ya etherification ikorwa mubushyuhe runaka nigitutu, kandi ibicuruzwa byabyitwayemo bitabangamiwe na acide, fer yakuweho, yoza kandi iruma, amaherezo ibona HPMC.

3. Gukoresha HPMC mubikorwa bya PVC

3.1 Ihame ry'ibikorwa

Ikoreshwa rya HPMC nkikwirakwiza mu nganda za PVC rigenwa nuburyo bwa molekile. Birashobora kugaragara uhereye kumiterere ya molekuline ya HPMC ko formulaire yimiterere ya HPMC ifite hydrophilic hydroxypropyl (-OCH-CHOHCH3) itsinda ryimikorere hamwe na lipophilique metoxyl (-OCH,) itsinda ryimikorere. Muri vinyl chloride ihagarikwa polymerisiyasi, ikwirakwiza yibanda cyane cyane mugice cyimbere cyicyiciro cya monomer gitonyanga-amazi, ikanatondekanya kuburyo igice cya hydrophilique cyikwirakwizwa kigera kumazi, naho igice cya lipofili kigera kuri monomer igitonyanga. Muri HPMC, igice cya hydroxypropyl gishingiye ku gice cya hydrophilique, gikwirakwizwa cyane mu cyiciro cy’amazi; igice gishingiye kuri mikorerexy ni igice cya lipofilique, gikwirakwizwa cyane mugice cya monomer. Ingano yicyiciro cya lipofilique ikwirakwizwa mugice cya monomer igira ingaruka kubunini bwibanze, urugero rwo kwegeranya, hamwe nubushake bwa resin. Iyo ibintu byinshi biri mu gice cya lipofilique, niko imbaraga zo gukingira ibice byibanze, ari nako urwego ruto rwo guteranya ibice byambere, hamwe na resin Ububasha bwa resin bwiyongera kandi ubucucike bugaragara bugabanuka; hejuru yibiri mu gice cya hydrophilique, intege nke zo gukingira ibice byibanze, niko urwego rwo kwegeranya ibice byibanze, niko kugabanuka kwinshi kwa resin, kandi nubunini bugaragara. Mubyongeyeho, ingaruka zo kurinda abatatanye zirakomeye cyane. Hamwe no kwiyongera kwijimye rya sisitemu ya reaction ya polymerisiyonike, ku kigero cyo hejuru cyo guhinduka, guhuza ibice bya resin bikunze kubaho, bigatuma imiterere yimiterere idasanzwe; Ingaruka zo gukingira abatatanye ni ntege nke cyane, kandi ibice byibanze Biroroshye guhuriza hamwe murwego rwo kugabanuka kwinshi mugihe cyambere cya polymerisation, bityo bigakora resin ifite imiterere idasanzwe.

Byagaragaye mu myitozo ko kongera HPMC hamwe n’ibindi bitatanya kuri polymerisation ihagarikwa ya vinyl chloride bishobora kugabanya ubushyamirane bwimiterere hagati ya vinyl chloride namazi mugihe cyambere cya polymerisation. Ikwirakwizwa rihamye mu mazi, iyi ngaruka yitwa ubushobozi bwo gutatanya; kurundi ruhande, itsinda ryimikorere ya lipofilique ya dispersant yamamajwe hejuru yigitonyanga cya vinyl chloride ikora urwego rukingira kugirango hirindwe igiteranyo cya vinyl chloride. Igitonyanga kigira uruhare rwo gutuza no kurinda, ibyo bita ubushobozi bwo kugumana colloid yo gutatanya. Ni ukuvuga, muri sisitemu yo guhagarika polymerisation, abatatanye bafite uruhare runini rwo gutatanya no kurinda umutekano muke.

3.2 Isesengura ryimikorere

PVC resin ni ifu ikomeye. Ibiranga ibice byayo (harimo imiterere yabyo, ubunini bwayo nogukwirakwiza, microstructure nubunini bwa pore no kugabura, nibindi) bigira uruhare runini mubikorwa byo gutunganya plastiki nibikorwa byibicuruzwa, no kumenya PVC. Hariho ibintu bibiri bigira uruhare runini mubiranga ibice bya resin:①Kuvanga ikigega cya polymerisation, ibikoresho birasa neza, kandi ibiranga gukurura ntabwo bihinduka;②Sisitemu yo gukwirakwiza monomer mubikorwa bya polymerisation, ni ukuvuga uburyo bwo guhitamo ubwoko, urwego na Dosage nimpinduka zikomeye cyane zigenzura imiterere ya PVC resin pellets.

Uhereye kuri resin granulation uburyo bwo guhagarika polymerisation ihagarikwa, birazwi ko kongeramo dispersant mbere yigitekerezo bigira uruhare runini muguhagarika ibitonyanga byamavuta ya monomer byakozwe no gukurura no gukumira polymerisation hamwe no guhuza ibitonyanga byamavuta. Kubwibyo, ingaruka zo gutatanya zizagira ingaruka kumiterere nyamukuru ya polymer resin.

Ubushobozi bwo kugumana colloid yo gutatanya bufite umubano mwiza nuburemere cyangwa uburemere bwa molekile. Uko ubwinshi bwibisubizo byamazi yo mumazi, niko uburemere bwa molekuline, hamwe nimbaraga nyinshi za firime ikingira yamamajwe kuri vinyl chloride-yamazi yicyiciro, ntibikunze guturika firime no guhunika ingano.

Igisubizo cyamazi yo gutatanya gifite ibikorwa byimikorere, uko umutwaro ugenda ugabanuka, niko ibikorwa byubuso bigenda byiyongera, ibitonyanga byamavuta ya monomer byakozwe neza, niko bigenda bigaragara ubucucike bugaragara bwibice byabonetse, kandi bikarekura kandi bikabije.

Byemejwe binyuze mu bushakashatsi bwakozwe ko ubushakashatsi bwerekana ko impagarara za HPMC ari ntoya mu bisubizo byo mu mazi bikwirakwiza amazi ya gelatine, PVA, na HPMC ku kintu kimwe, ni ukuvuga ko uko umutwaro muto ugaragara, niko ibikorwa byo hejuru bya HPMC muri sisitemu ya vinyl chloride ihagarika polymerisation, byerekana ko Ubushobozi bukomeye bwo gukwirakwiza HPMC ikwirakwiza. Ugereranije no hagati ya PVA ikwirakwiza kandi yijimye cyane, impuzandengo ya molekuline igereranije ya HPMC (hafi 22 000) ni nto cyane ugereranije na PVA (hafi 150 000), ni ukuvuga, imikorere yo kugumya gufata imiti ikwirakwiza HPMC ntabwo ari nziza nkiyi ya PVA.

Isesengura ryavuzwe haruguru kandi rifatika ryerekana ko HPMC ishobora gukoreshwa mugukora ubwoko butandukanye bwo guhagarika PVC. Ugereranije na PVA hamwe na dogere ya alcool ya 80%, ifite ubushobozi buke bwo gufata kole hamwe nubushobozi bukomeye bwo gukwirakwiza;．Ugereranije na 5% PVA, ubushobozi bwo kugumana kole hamwe nubushobozi bwo gutatanya birasa. HPMC ikoreshwa nk'ikwirakwiza, kandi ibice bya resin byakozwe na HPMC bifite ibintu bike bya "firime", kutubahiriza neza ibice bya resin, ingano ntoya, kwinjizwa cyane kwa plasitike itunganya resin, kandi mubyukuri ntibifatanye na kase, kuko ntabwo ari -uburozi kandi bworoshye Bitanga ubuvuzi-urwego rwubuvuzi rusobanutse neza.

Dukurikije isesengura ry’ibikorwa byavuzwe haruguru kandi bifatika, HPMC na PVA, nk’ibisaranganya nyamukuru mu guhagarika polymerisation, birashobora ahanini kuba byujuje ubuziranenge bw’ibicuruzwa bisigara, ariko biragoye cyane kuzuza ibisabwa by’ubushobozi bwo kugumya hamwe n’ibikorwa by’imikorere muri polymerizasi umusaruro. Kuberako byombi bifite umwihariko wabyo, kugirango bibyare umusaruro mwiza wo mu bwoko bwa resin, ababikora benshi bakoresha sisitemu igizwe nubushobozi butandukanye bwo kugumya gufata hamwe nibikorwa bitandukanye, ni ukuvuga PVA na HPMC sisitemu yo gukwirakwiza, kugirango bagere ku ngaruka zo kwigira kuri buri ikindi.

3.3 Kugereranya ubuziranenge bwa HPMC murugo no mumahanga

Uburyo bwo gupima ubushyuhe bwa gel ni ugutegura igisubizo cyamazi hamwe nigice kinini cya 0.15%, ukongeramo umuyoboro wamabara, shyiramo tometrometero, ushushe buhoro hanyuma ubyuke buhoro, mugihe igisubizo kigaragaye amata yera yera ya gile ni ntarengwa yo hasi ya ubushyuhe bwa gel, komeza ushushe kandi ubyuke, mugihe igisubizo gihindutse amata yera yuzuye ni urugero rwo hejuru rwubushyuhe bwa gel.

3.4 Imiterere yuburyo butandukanye bwa HPMC mugihugu no mumahanga munsi ya microscope

Amafoto yubwoko butandukanye bwa HPMC munsi ya microscope urashobora kuboneka:①Amahanga E50 n’imbere mu gihugu 60YT50 HPMC byombi byerekana imiterere yegeranye munsi ya microscope, imiterere ya molekile yo murugo 60YT50HPMC iroroshye kandi irasa, kandi imiterere ya molekuline yamahanga E50 iratatana;②Imiterere rusange yigihugu 60YT50 HPMC Imiterere irashobora kugabanya muburyo bwo kugabanya impagarara hagati ya vinyl chloride namazi, kandi igafasha vinyl chloride gukwirakwiza kimwe kandi gihamye mumazi y’amazi, ni ukuvuga ko hydroxypropyl iri muri 60YT50 HPMC iri hejuru gato, ni ituma hydrophilique irushaho kuba nziza, mugihe ES0 Bitewe nibirimo byinshi mumatsinda ya mikorerexyl, mubyukuri, ifite imikorere ikomeye yo kubika reberi;③irinda guhuza ibitonyanga bya vinyl chloride mugihe cyambere cya polymerisation;④irinda guhuza ibice bya polymer hagati na nyuma yicyiciro cya polymerisation. Imiterere rusange yiga cyane cyane gahunda ya molekile ya selile (kristalline na amorphous, ingano nuburyo bwa selile yingingo, uburyo bwo gupakira iminyururu ya molekile mu kagari kamwe, ingano ya kristu, nibindi), imiterere yicyerekezo ( urunigi rwa molekuline hamwe na Orientation ya microcrystal), nibindi, bifasha mugukora neza kwipamba yatunganijwe mugihe cya etherifike, kandi bikazamura ubwiza bwimbere hamwe na HPMC.

3.5 Leta ya HPMC igisubizo cyamazi murugo no mumahanga

HPMC yo mu gihugu no mu mahanga yateguwe mu gisubizo cy’amazi 1%, naho itumanaho ryoroheje ry’imbere mu gihugu 60YT50 HPMC ryari 93%, naho iry’amahanga E50 HPMC ryari 94%, kandi ahanini nta tandukaniro ryari hagati yo kohereza urumuri hagati yombi.

Ibicuruzwa bya HPMC byo mu gihugu ndetse n’amahanga byakozwe mu gisubizo cy’amazi 0.5%, kandi igisubizo nyuma ya selile HPMC yasheshwe. Birashobora kugaragara mumaso gusa ko gukorera mu mucyo byombi ari byiza cyane, bisobanutse kandi bisobanutse, kandi nta mubare munini wa fibre idashobora gushonga, ibyo bikaba byerekana ko ubwiza bwa HPMC butumizwa mu mahanga na HPMC yo mu gihugu ari bwiza. Umucyo mwinshi wohereza igisubizo werekana ko HPMC yitwara neza mugikorwa cya alkalisation na etherification, nta mwanda mwinshi hamwe na fibre idashobora gushonga. Ubwa mbere, irashobora kumenya byoroshye ubwiza bwa HPMC. Amazi yera n'umwuka mwinshi.

4. Ikizamini cya HPMC ikwirakwiza ikizamini

Mu rwego rwo kurushaho kwemeza imikorere yo gukwirakwiza HPMC yo mu gihugu muri gahunda ya polymerisation ndetse n’ingaruka zayo ku bwiza bwa resin ya PVC, itsinda R&D rya Shandong Yiteng New Materials Co., Ltd ryakoresheje ibicuruzwa bya HPMC byo mu gihugu no mu mahanga nk'ibitatanya, na HPMC yo mu gihugu. no gutumiza mu mahanga PVA nk'abatatanye. Ubwiza bwibisigisigi byateguwe nibirango bitandukanye bya HPMC nkuko abatatanye mubushinwa barageragejwe baragereranya, kandi ingaruka zo gukoresha HPMC muri resin ya PVC zasesenguwe ziraganirwaho.

4.1 Inzira yo kugerageza

Imyitwarire ya polymerisation yakorewe mu isafuriya ya m3 6. Mu rwego rwo gukuraho ingaruka z’ubuziranenge bwa monomer ku bwiza bwa resin ya PVC, uruganda rw’icyitegererezo rwakoresheje uburyo bwa calcium karbide mu gukora vinyl chloride monomer, kandi amazi ya monomer yari munsi ya 50×10-6. Nyuma yicyuho cya kayeri ya polymerisiyasi yujuje ibyangombwa, ongeramo vinyl chloride yapimwe namazi adafite ion kuri keteri ya polymerisiyoneri ikurikiranye, hanyuma wongereho ibitandukanya nibindi byongerwaho bisabwa na formula mumasafuriya icyarimwe nyuma yo gupima. Nyuma yo kubyutsa mbere yiminota 15, amazi ashyushye kuri 90°C yinjijwe mu ikoti, ashyushya ubushyuhe bwa polymerisation kugirango itangire reaction ya polymerisation, hanyuma amazi akonje yinjizwa muri jacketi icyarimwe, kandi ubushyuhe bwa reaction bwagenzuwe na DCS. Iyo umuvuduko wicyayi cya polymerisiyasi ugabanutse kuri 0.15 MPa, igipimo cyo guhindura polymerisation kigera kuri 85% kugeza kuri 90%, wongeyeho terminator kugirango uhagarike reaction, kugarura vinyl chloride, gutandukanya no gukama kugirango ubone resin ya PVC.

4.2 Ikizamini cya pilote yo murugo 60YT50 hamwe na E50 HPMC yo hanze

Duhereye ku mibare yo kugereranya ubuziranenge bw’imbere mu gihugu 60YT50 hamwe na E50 HPMC yo mu mahanga kugira ngo ikore ibisigazwa bya PVC, urashobora kubona ko iyinjizwa rya viscosity na plasitike byinjira mu gihugu 60YT50 HPMC PVC bisa n’ibicuruzwa bisa n’ibicuruzwa byo mu mahanga bya HPMC, bifite ibintu bihindagurika cyane, byiza -ibihagije, Igipimo cyujuje ibisabwa ni 100%, kandi byombi byegeranye muburyo bwa resin. Imikorere ya metxyl yo mumahanga E50 irarenze gato ugereranije niyimbere muri 60YT50 HPMC, kandi imikorere yayo yo kubika reberi irakomeye. Ibisigarira bya PVC byabonetse ni byiza cyane kurenza HPMC yo mu rugo mubijyanye no kwinjiza plastike hamwe n'ubucucike bugaragara.

4.3 Imbere mu gihugu 60YT50 HPMC hamwe na PVA yatumijwe mu mahanga ikoreshwa nka dispersant kugirango ikore ikizamini cyindege

4.3.1 Ubwiza bwa PVC resin yakozwe

PVC resin ikorwa murugo 60YT50 HPMC kandi ikwirakwiza PVA itumizwa hanze. Kugereranya ubuziranenge birashobora kugaragara: ukoresheje ubuziranenge bumwe 60YT50HPMC hamwe na sisitemu yo gukwirakwiza PVA itumizwa mu mahanga kugirango ikore ibisigazwa bya PVC, kubera ko mubyukuri 60YTS0 HPMC ikwirakwiza ifite ubushobozi bwo gukwirakwiza no gukora neza. Ntabwo aribyiza nka sisitemu yo gukwirakwiza PVA. Ubucucike bugaragara bwa PVC resin yakozwe na 60YTS0 HPMC yo gukwirakwiza sisitemu iri munsi gato ugereranije niyikwirakwizwa rya PVA, kwinjiza plastike nibyiza, kandi impuzandengo yubunini bwa resin ni nziza. Ibisubizo byikizamini birashobora kwerekana ahanini ibintu bitandukanye biranga 60YT50 HPMC hamwe na sisitemu yo gukwirakwiza PVA itumizwa mu mahanga, kandi ikanagaragaza ibyiza n’ibibi by’abatatanye bombi bivuye mu mikorere ya PVC. Kubijyanye na microstructure, firime yo hejuru ya HPMC ikwirakwiza resin Thin, resin yoroshye kuyikora mugihe cyo kuyitunganya.

4.3.2 Imiterere ya firime ya PVC resin ibice munsi ya microscope ya electron

Urebye microstructure yibice bya resin, ibice bya resin byakozwe na dispersant ya HPMC bifite umubyimba muto wa microscopique “firime”; ibice bya resin byakozwe na PVA ikwirakwiza bifite microscopique “firime”. Byongeye kandi, kubakora calcium karbide resin ikora ibintu byinshi birimo vinyl chloride monomer yanduye, kugirango barebe ko sisitemu ya formula ihagaze neza, bagomba kongera umubare wabatatanye, bikaviramo kwiyongera mububiko bwubutaka bwibice bya resin no kubyimba kwa “firime”. Hasi yo gutunganya ibikorwa bya plasitike ntabwo ari byiza.

4.4 Ikigeragezo cyicyiciro cya HPMC kugirango gitange PVC resin

4.4.1 Ubwiza bwa PVC resin yakozwe

Ukoresheje amanota atandukanye yo murugo ya HPMC (hamwe na viscosities zitandukanye hamwe nibirimo hydroxypropyl) nkumuntu umwe ukwirakwiza, umubare wabatatanye ni 0,060% ya vinyl chloride monomer, naho guhagarika polymerisation ya vinyl chloride bikorwa kuri 56.5.° C kugirango ubone Impuzandengo y'ibipimo by'ubunini, ubucucike bugaragara, hamwe no kwinjiza plastike ya resinike ya PVC.

Birashobora kugaragara muri ibi ko:①Ugereranije na sisitemu yo gukwirakwiza HPYC ya 65YT50, 75YT100 ifite ubukonje bwa 65YT50 HPMC itageze kuri 75YT100HPMC, naho hydroxypropyl nayo iri munsi ya 75YT100HPMC, mugihe methoxyl iri hejuru ya 75YT100 HPMC. Dukurikije isesengura rishingiye ku nyigisho z’abatatanye, viscosity na hydroxypropyl Kugabanuka kwibirimo shingiro byanze bikunze bizagabanya kugabanuka kwubushobozi bwo gukwirakwiza HPMC, kandi kwiyongera kwibintu bya methoxy bizateza imbere kongera ubushobozi bwo kugumya gufatira hamwe, ni ukuvuga, sisitemu yo gukwirakwiza 65YT50 HPMC izatera impuzandengo yubunini buke bwa PVC resin kwiyongera (ubunini buke buke), Ubucucike bugaragara bwiyongera kandi kwinjiza plastike byiyongera;②Ugereranije na 60YT50 Sisitemu yo gukwirakwiza HPMC, hydroxypropyl ya 60YT50 HPMC iruta iya 65YT50 HPMC, kandi methoxy yibiri muribi irihafi kandi hejuru. Ukurikije inyigisho zitatanye, uko hydroxypropyl iri hejuru, niko imbaraga zo gukwirakwiza za dispersant, niko ubushobozi bwo gukwirakwiza 60YT50 HPMC bwiyongera; icyarimwe, ibiri muri metoxyl byombi biregeranye kandi nibirimo biri hejuru, ubushobozi bwo kugumana kole nabwo burakomeye, Muri sisitemu yo gukwirakwiza 60YT50 HPMC na 65YT50 HPMC yo mu bwoko bumwe, resin ya PVC yakozwe na 60YT50HPMC kuruta 65YT50 HPMC Sisitemu igomba kuba ifite ingano ntoya yingero zingana (ingano nziza yubunini) hamwe nubucucike bugaragara, kubera ko uburyo bwa metoxyl muri sisitemu yo gutatanya buri hafi (imikorere yo kugumya reberi), bikaviramo kwinjiza plastike. Ninimpamvu ituma 60YT50 HPMC ikoreshwa mubusanzwe inganda za PVC muguhitamo PVA na HPMC ikwirakwiza. Birumvikana ko niba 65YT50 HPMC ikoreshwa muburyo bukwiye muburyo bwa sisitemu yo gukwirakwiza sisitemu nayo igomba kugenwa ukurikije ibipimo ngenderwaho byihariye bya resin.

4.4.2 Ibice byimiterere ya PVC resin ibice munsi ya microscope

Ibice bya morphologie ya PVC resin ikorwa nubwoko 2 bwa 60YT50 HPMC ikwirakwiza hamwe na hydroxypropyl hamwe na vitamine itandukanye ya microscope irashobora kugaragara: hamwe no kwiyongera kwa hydroxypropyl hamwe na mikorobe, ubushobozi bwo gukwirakwiza HPMC, kugumana Ubushobozi bwa kole bwongerewe imbaraga. Ugereranije na 60YT50 HPMC (8.7% igice cya hydroxypropyl igice cya 28.5%, igice cya 28.5% cya vitamine ya misile), ibice bya PVC resin byakozwe mubisanzwe, nta murizo, kandi ibice birarekuye.

4.5 Ingaruka ya dosiye 60YT50 HPMC kumiterere ya PVC resin

Ikizamini cyicyitegererezo gikoresha 60YT50 HPMC nkikwirakwiza kimwe hamwe nigice kinini cyitsinda rya mikorobe ya 28.5% nigice kinini cya hydroxypropyl ya 8.5%. Impuzandengo y'ibipimo by'ubunini, ubucucike bugaragara, hamwe no kwinjiza plastike ya PVC resin yabonetse mugukora polymerisation ya vinyl chloride kuri 5°C.

Birashobora kugaragara ko uko ubwinshi bwikwirakwizwa bwiyongera, ubunini bwurwego rutatanye bwamamajwe hejuru yigitonyanga bwiyongera, ibyo bikaba byongera imikorere yo gutatanya hamwe nubushobozi bwo kugumya kwifata, bigatuma habaho igabanuka ryubunini buringaniye bwa PVC. resin no kugabanuka kubuso. Ubucucike bugaragara bwiyongera kandi kwinjiza plastike bigabanuka.

5 Umwanzuro

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(2) Iyo HPMC ikoreshwa nkikwirakwiza rimwe, irashobora kandi kubyara ibicuruzwa bya PVC hamwe nibipimo byiza.

. Ikwirakwizwa rya HPMC rifite ibikorwa byo hejuru kandi bifite imbaraga zikomeye za monomer zikwirakwiza imikorere. Ifite imikorere imwe na PVA 72 .5% impamyabumenyi ya alcool.

. 60YT50 HPMC ikwirakwiza ifite imikorere yo gukwirakwiza kurusha 65YT50 HPMC kubera hydroxypropyl nyinshi; 65YT50 HPMC Bitewe nuburyo bukomeye bwibintu bikwirakwizwa, imikorere yo kubika reberi irakomeye kuruta 60YT50HPMC.

. Iyo igipimo cya 60YT50 HPMC ikwirakwiza cyiyongereye, impuzandengo yubunini bwa PVC resin igabanuka, ubucucike bugaragara bwiyongera, hamwe na plastike Igipimo cyo kwinjiza abakozi kigabanuka, naho ubundi.

Mubyongeyeho, ugereranije na PVA ikwirakwiza, HPMC ikoreshwa mugukora ibicuruzwa byuruhererekane, byerekana ubuhanga bukomeye kandi butajegajega nkibipimo nkubwoko bwa kayeri ya polymerisation, ingano, gukurura, nibindi, kandi birashobora kugabanya ibintu byibikoresho byurukuta rwa keteti bifatanye na isafuriya, no kugabanya firime yubutaka bwa resin Ubunini, resin idafite uburozi, ituze ryinshi ryumuriro, byongera umucyo wibicuruzwa bitunganyirizwa mu mahanga, n'ibindi. inyungu z'ubukungu.