Ọmụmụ na Nnwale Pilot nke Mmepụta Resin PVC sitere na Hydroxypropyl Methyl Cellulose

E webatara usoro mmepụta nke HPMC nke ụlọ, na ọrụ bụ isi nke HPMC nke ụlọ na mmepụta nke PVC na mmetụta ya na àgwà nke resin PVC ka a na-amụ na ule pilot. Nsonaazụ gosiri na:①Arụmọrụ nke HPMC nke ụlọ dị mma, na arụmọrụ nke resin PVC emepụtara dabara na ogo resin PVC nke ngwaahịa HPMC na-ebubata;②Mgbe a na-eji HPMC ụlọ eme ihe na mmepụta PVC, PVC nwere ike imeziwanye ma mee ka ọ dị mma site n'ịgbanwe ụdị na ego nke HPMC arụmọrụ nke ngwaahịa resin;③Ụlọ HPMC kwesịrị ekwesị maka mmepụta nke resins PVC dị iche iche rụrụ arụ. Ihe ndị dị na PVC resin emepụtara nwere ihe nkiri dị mkpa na ọkụ na-arapara na kettle;④Ngwaahịa HPMC nke ụlọ nwere ike dochie ngwaahịa HPMC ebubata.

Isi okwu:PVC; onye na-ekesa; hydroxypropyl methylcellulose

Mmepụta nke HPMC na owu a nụchara anụcha na mba ndị ọzọ malitere na 1960, obodo m wee malite ịmalite HPMC na mbido 1970. N'ihi mgbochi nke akụrụngwa, teknụzụ na ihe ndị ọzọ, àgwà ahụ enweghị ike kwụsie ike, ọdịdị ya dịkwa fibrous. N'ihi nke a, HPMC nke ụlọ ọrụ PVC resin chọrọ, ụlọ ọrụ ọgwụ, ihe ụlọ dị elu, ihe ịchọ mma, ígwè, nri na ụlọ ọrụ ndị ọzọ na-adabere na mbubata, tumadi site na United States na Japan, na HPMC bụ n'okpuru ọchịchị mba ọzọ. . Na 1990, Ministry of Chemical Industry haziri mkpa nkeji ijikọ ọnụ gboo isi nsogbu, na-emepụta ngwaahịa na zutere ulo oru mma chọrọ nke PVC, ghọtara na localization nke HPMC. N'ime afọ ndị na-adịbeghị anya, ndị na-emepụta HPMC ndị magburu onwe ha eguzobewo echiche mmepe nke ihe ọhụrụ, nhazi, akwụkwọ ndụ akwụkwọ ndụ, imeghe, na nkekọrịta, siri ọnwụ na mmepe nke na-akwalite ọhụrụ, wee nweta ọganihu dị elu site na mmepụta nke onwe, mmepe sayensị, na ntụgharị ngwa ngwa. nke ochie na ọhụrụ kinetic ume. Ndị China Petroleum and Chemical Industry Federation kwadoro, GB/T 34263-2017 "Hydroxypropyl Methyl Fiber for Industrial Use", bụ nke Kọmitii Nka na-ahụ Maka Nkà na Ụzụ nke China họpụtara ma kwadoro ya na 2017, yana ya. e wepụtara na mba na Eprel 1, 2018. emejuputa atumatu. Kemgbe ahụ, enwere ụkpụrụ maka ụlọ ọrụ PVC ịzụta na iji ngwaahịa HPMC.

1. Owu a nụchara anụcha

30# owu a nụchara anụcha dị n'ụdị eriri dị mma n'okpuru microscope. Otu eriri owu tozuru okè nwere ọtụtụ narị eriri ihe ndị bụ́ isi a kpụrụ akpụ n'ofe akụkụ ya, a na-ejikọtakwa eriri ndị bụ́ isi n'ime ọtụtụ narị eriri ekpokọtara ọnụ. Ngwungwu fibril ndị a A na-ejikọta eriri owu na-acha ọkụ ọkụ n'ígwé dị iche iche. Nke a na-enyere aka guzobe cellulose alkalized na ịdị n'otu nke ogo etherification, ma na-enyere aka melite ikike njigide gluu nke HPMC n'oge polymerization PVC.

30 # owu a nụchara anụcha na-eji litter owu nwere oke ntozu oke na ogo polymerization dị ala dị ka akụrụngwa akụrụngwa, usoro mmepụta ahụ siri ike, ọ dị mkpa ka a mee ka ọ dị ọcha, yana ọnụ ahịa mmepụta dị elu. 1000 # owu a nụchara anụcha na-eji litter owu nwere oke ntozu na oke nke polymerization dị ka akụrụngwa, usoro mmepụta adịghị mgbagwoju anya, ọnụ ahịa mmepụta dị ala. Ya mere, a na-eji owu a nụchara anụcha 30# na-emepụta ngwaahịa dị elu dị ka PVC resin/medicine/ food, na 1000# owu a nụchara anụcha ka a na-eji na-emepụta ọkwa ụlọ ma ọ bụ ngwa ngwa ọzọ.

2. Ọdịdị, ihe nlereanya na usoro mmepụta nke ngwaahịa HPMC

2.1 Njirimara nke ngwaahịa HPMC

HPMCbụ ihe na-adịghị egbu egbu, enweghị isi, ọcha na-enweghị ụtọ ma ọ bụ na-acha ọcha fibrous ma ọ bụ ntụ ntụ granular nke sitere na owu a nụchara anụcha dị ka ihe bụ isi. Ọ bụ ọkara sịntetik, anaghị arụ ọrụ, polymer viscoelastic, ogige ndị na-abụghị ionic. Aha ndị China bụ hydroxymethyl propyl cellulose, cellulose hydroxypropyl methyl ether, na hypromellose, na usoro ihe omimi bụ [C6H7O2(OH) 2COOR]n.

Ebe mgbaze nke HPMC bụ 225-230°C, njupụta bụ 1.26-1.31 g / cm³, ndị ikwu molekụla uka bụ banyere 22,000, carbonization okpomọkụ bụ 280-300°C, na esemokwu elu bụ 42-56 mN / m (2% ngwọta mmiri).

Njirimara anụ ahụ na kemịkal nke HPMC gụnyere isi ihe ndị a.

(1) index nke urughuru: The HPMC urughuru size index maka PVC resin nwere elu chọrọ. Ọnụego ngafe nke 150μm karịrị 98.5%, na ngafe ọnụego nke 187μm bụ 100%. Ihe achọrọ maka nkọwapụta pụrụ iche bụ n'etiti 250 na 425μm.

(2) Solubility: soluble na ụfọdụ ihe mgbaze dị ka mmiri na alcohols, mmiri soluble na nwere elu ọrụ. Ngosipụta dị elu, arụmọrụ kwụsiri ike nke ngwọta, nkọwa dị iche iche nke ngwaahịa nwere okpomọkụ gel dị iche iche, mgbanwe na-agbanwe na viscosity, na-ebelata viscosity, nke ka ukwuu, nkọwa dị iche iche nke HPMC nwere ụfọdụ ọdịiche na arụmọrụ, na solubility na mmiri abụghị. na-emetụta uru pH.

Solubility na mmiri oyi na mmiri ọkụ dị iche. Ngwaahịa nwere nnukwu methoxyl bụ ihe a na-apụghị ịsacha na mmiri ọkụ karịa 85°C, ngwaahịa nwere ọkara methoxyl bụ ihe a na-apụghị ịsacha na mmiri ọkụ karịa 65°C, na ngwaahịa ndị nwere obere methoxyl bụ ihe a na-apụghị ịsacha na mmiri ọkụ karịa 65°C. Mmiri ọkụ karịrị 60°C. HPMC nkịtị bụ ihe a na-adịghị ahụkebe na ihe mgbaze organic dị ka ethanol, ether, na chloroform, mana soluble na 10% ruo 80% ethanol aqueous solution ma ọ bụ ngwakọta nke methanol na dichloromethane. HPMC nwere ụfọdụ hygroscopicity. N'afọ 25°C / 80% RH, nnabata mmiri nha nha bụ 13%, ọ kwụsiri ike na ebe akọrọ na pH uru nke 3.0-11.0.

(3) HPMC nwere àgwà magburu onwe ya nke ịbụ onye soluble na mmiri oyi mana enweghị ike ime ya na mmiri ọkụ. Ịtinye HPMC na mmiri oyi na ịkpali ya nwere ike ịgbaze kpamkpam wee ghọọ mmiri mmiri na-ekpo ọkụ. Ụfọdụ ngwaahịa ika na-enweghị isi na mmiri ọkụ karịa 60°C, ma nwee ike ịza naanị. Enwere ike iji ihe onwunwe a mee ihe maka ịsacha na ịdị ọcha, nke nwere ike ibelata ọnụ ahịa, belata mmetọ, na ịbawanye nchekwa mmepụta. Site na mbelata nke ọdịnaya metoxyl, ebe gel nke HPMC mụbara, solubility mmiri na-ebelata, ọrụ elu na-ebelatakwa.

(4) A na-eji HPMC dị ka ihe nkwusioru nkwusioru na mgbasa na polymerization nke vinyl chloride na vinylidene. Enwere ike iji ya na mmanya polyvinyl (PVA) ma ọ bụ n'onwe ya, ma nwee ike ijikwa ọdịdị ahụ na nkesa urughuru.

(5) HPMC nwekwara ike na-eguzogide enzyme, thermal gel Njirimara (mmiri ọkụ karịa 60°C adịghị agbaze, ma ọ bụ naanị ọzịza), ihe ndị na-emepụta ihe nkiri mara mma, nkwụsi ike pH uru (3.0-11.0), njide mmiri na ọtụtụ njirimara ndị ọzọ.

Dabere na njirimara mara mma nke dị n'elu, a na-eji HPMC eme ihe na mpaghara mmepụta ihe dị ka ọgwụ, ụlọ ọrụ petrochemical, ihe owuwu, seramiiki, textile, nri, kemịkalụ kwa ụbọchị, resin sịntetik, mkpuchi na elektrọn.

2.2 HPMC ngwaahịa nlereanya

Ogo nke ọdịnaya metxyl na ọdịnaya hydroxypropyl na ngwaahịa HPMC dị iche, viscosity dị iche, yana arụmọrụ ngwaahịa dị iche.

2.3 Production usoro nke HPMC ngwaahịa

HPMC na-eji cellulose owu a nụchara anụcha dị ka ihe bụ isi akụrụngwa, ma na-etolite ntụ ntụ site n'ịzọpịa ọgwụgwọ. Tinye owu ntụ ntụ n'ime kettle polymerization kwụ ọtọ, fesaa ya n'ihe dị ka ugboro 10 ihe mgbaze (toluene, isopropanol dị ka ihe mgbaze agwakọta), ma gbakwunye n'usoro Lye (nri caustic soda na-agbaze na mmiri ọkụ na mbụ), propylene oxide, methyl chloride etherification gị n'ụlọnga, etherification mmeghachi omume na-rụrụ na a ụfọdụ okpomọkụ na nrụgide, na mmeghachi omume ngwaahịa a neutralized na acid, ígwè wepụ, na-asa na nke a mịrị amị , na n'ikpeazụ nweta HPMC.

3. Ngwa nke HPMC na mmepụta PVC

3.1 Ụkpụrụ nke ime ihe

Ngwa nke HPMC dị ka onye na-ekesa na mmepụta mmepụta ihe nke PVC na-ekpebi site na nhazi ya. Enwere ike ịhụ site na usoro ihe omimi nke HPMC na usoro nhazi nke HPMC nwere ma hydrophilic hydroxypropyl (-OCH-CHOHCH3) na otu lipophilic methoxyl (-OCH,) na-arụ ọrụ. Na vinyl chloride nkwusioru polymerization, ndị dispersant bụ tumadi lekwasịrị ke interface oyi akwa nke monomer droplet-mmiri na-adọ, na ndokwa n'ụzọ na hydrophilic akụkụ nke dispersant gbatịrị na mmiri na-adọ, na lipophilic akụkụ gbatịrị na monomer. droplet. Na HPMC, akụkụ nke hydroxypropyl bụ akụkụ nke hydrophilic, nke a na-ekesa na mmiri mmiri; akụkụ methoxy nke dabeere na ya bụ akụkụ lipophilic, nke a na-ekesa nke ọma na usoro monomer. Ọnụ ọgụgụ nke akụkụ lipophilic ekesara na usoro monomer na-emetụta nha nha nke mbụ, ogo nchịkọta, na porosity nke resin. Ọdịnaya dị elu nke akụkụ lipophilic, mmetụta nchebe siri ike na ihe ndị bụ isi, na-ebelata ogo nke nchịkọta nke mbụ, na resin The porosity nke resin na-abawanye na njupụta pụtara ìhè na-ebelata; dị elu nke ọdịnaya nke akụkụ hydrophilic, na-esiwanye ike nchebe nchebe na ihe ndị bụ isi, na-eme ka ogo nke nchịkọta nke ihe ndị bụ isi, na-ebelata porosity nke resin, na elu nke njupụta pụtara ìhè. Tụkwasị na nke ahụ, mmetụta nchebe nke onye na-ekesa dị ike. Site na mmụba nke viscosity nke usoro mmeghachi omume nke polymerization, na ọnụ ọgụgụ ntụgharị dị elu, njikọ dị n'etiti ihe ndị na-emepụta resin na-eme ka ọ bụrụ ihe na-adịghị mma; mmetụta nchebe nke dispersant adịghị ike nke ukwuu, na ihe ndị bụ isi Ọ dị mfe ịmekọrịta na ọkwa nke ọnụ ọgụgụ ntụgharị dị ala na mmalite nke polymerization, si otú a na-akpụ resin na ọdịdị na-adịghị mma.

E gosipụtara site na omume na ịgbakwunye HPMC na ndị na-ekesa ndị ọzọ na nkwusioru polymerization nke vinyl chloride nwere ike ibelata esemokwu interfacial n'etiti vinyl chloride na mmiri na mmalite nke polymerization. Mgbasa siri ike na mmiri mmiri, a na-akpọ mmetụta a ike mgbasa nke onye na-ekesa; n'aka nke ọzọ, lipophilic ọrụ otu nke dispersant adsorbed n'elu nke vinyl chloride droplet na-emepụta oyi akwa mkpuchi iji gbochie nchịkọta nke vinyl chloride droplet. Droplet ahụ na-arụ ọrụ nke nkwụsi ike na nchebe, nke a na-akpọ ikike njigide colloid nke onye na-ekesa. Nke ahụ bụ, na usoro nkwụsịtụ polymerization, onye na-ekesa na-arụ ọrụ abụọ nke ịgbasa na ichebe nkwụsi ike colloidal.

3.2 Nyocha arụmọrụ ngwa

Resin PVC bụ ntụ ntụ siri ike. Ya urughuru e ji mara (gụnyere ya urughuru udi, urughuru size na nkesa, microstructure na pore size na nkesa, wdg) n'ụzọ dị ukwuu emetụta nhazi arụmọrụ nke plastik na ngwaahịa arụmọrụ, na-ekpebi PVC. Enwere ihe abụọ nwere mmetụta kachasị na njirimara nke resin particles:①Na-akpali akpali nke polymerization tank, ngwá bụ dịtụ ofu, na-akpali akpali àgwà bụ isi agbanwebeghị;②Usoro nkesa nke monomer na usoro polymerization, ya bụ, otu esi ahọrọ ụdị, ọkwa na usoro onunu ogwu bụ mgbanwe dị oke egwu na-achịkwa njirimara nke pellets resin PVC.

Site na resin granulation usoro na nkwusioru polymerization usoro, a maara na-agbakwụnye a dispersant tupu mmeghachi omume tumadi na-eje ozi na stabilize monomer mmanụ ụmụ irighiri mmiri kpụrụ site na-akpali akpali na igbochi ibe polymerization na merging nke mmanụ ụmụ irighiri mmiri. Ya mere, mmetụta mgbasa nke onye na-ekesa ga-emetụta ihe ndị bụ isi nke resin polymer.

Ikike njide colloid nke onye na-ekesa nwere mmekọrịta dị mma na viscosity ma ọ bụ arọ molecular. Ka viscosity nke ngwọta mmiri dị ukwuu, ka ịdị arọ molekụla na-adị elu, na ike dị elu nke ihe nkiri nchebe nke a na-etinye na vinyl chloride-water interface interface, ọ na-esiwanye ike na-agbaji ihe nkiri na ịkọ ọka.

The aqueous ngwọta nke dispersant nwere interfacial ọrụ, nta n'elu erughị ala, elu elu ọrụ, mma nke monomer mmanụ ụmụ irighiri mmiri kpụrụ, nta nke pụtara njupụta nke enwetara resin ahụ, na looser na ndị ọzọ porous.

Ọ e kwadoro site ibuo nnyocha na interfacial erughị ala nke HPMC bụ dịtụ obere na aqueous dispersant ngwọta nke gelatin, PVA, na HPMC n'otu ịta, ya bụ, nta n'elu esemokwu, na elu elu ọrụ nke HPMC na. na vinyl chloride nkwusioru polymerization usoro, nke na-egosi na ike dispersing ike nke HPMC dispersant. Tụnyere ọkara na elu viscosity PVA dispersants, nkezi ikwu molekul arọ nke HPMC (banyere 22 000) bụ nnọọ nta karịa nke PVA (banyere 150 000), ya bụ, nrapado njigide arụmọrụ nke HPMC dispersants adịghị mma dị ka nke ahụ. nke PVA.

Ntụle usoro iwu na nke bara uru n'elu na-egosi na enwere ike iji HPMC mepụta ụdị resin PVC nkwusioru dị iche iche. E jiri ya tụnyere PVA nwere ogo nke alcoholysis nke 80%, ọ nwere ikike njigide gluu na-esighi ike na ike mgbasawanye ike;.E jiri ya tụnyere 5% PVA, ikike njigide gluu na ike mgbasa bụ ihe nhata. A na-eji HPMC mee ihe dị ka onye na-ekesa, na ihe ndị na-emepụta resin nke HPMC na-emepụta nwere obere ọdịnaya "ihe nkiri", nke na-adịghị mma nke resin particles, nke kacha mma, nnukwu absorption nke resin nhazi plasticizer, na n'ezie na-arapara n'ahụ ketulu, n'ihi na ọ bụghị ya. -egbu egbu ma dị mfe Na-emepụta resins ọkwa ahụike nwere oke doro anya.

Dị ka n'elu usoro iwu na nke bara uru mmepụta analysis, HPMC na PVA, dị ka isi dispersants maka nkwusioru polymerization, nwere ike ihu ọma izute àgwà chọrọ nke resin ngwaahịa, ma ọ bụ nnọọ ike izute chọrọ nke nrapado njigide ikike na interfacial ọrụ na polymerization. mmepụta. N'ihi na ha abụọ nwere njirimara nke ha, iji mepụta ngwaahịa resin dị elu, ọtụtụ ndị na-emepụta ihe na-eji usoro mgbagwoju anya na ikike njigide dị iche iche na ihe omume interfacial, ya bụ, PVA na HPMC composite dispersant system, iji nweta mmetụta nke mmụta site na nke ọ bụla. ọzọ.

3.3 Quality ntụnyere nke HPMC n'ụlọ na ná mba ọzọ

Usoro ule okpomọkụ gel bụ ịkwadebe ihe ngwọta mmiri na oke nke 0.15%, gbakwunye ya na tube colorimetric, tinye thermometer, jiri nwayọọ nwayọọ kpoo ọkụ ma kpalie nwayọọ, mgbe ngwọta na-apụta milky white filamentous gel bụ ala dị ala. na gel okpomọkụ, nọgide na-ekpo ọkụ na-akpali akpali, mgbe ngwọta kpamkpam na-atụgharị milky ọcha bụ oke elu nke gel okpomọkụ.

3.4 steeti ụdị HPMC dị iche iche n'ụlọ na mba ọzọ n'okpuru microscope

Enwere ike ịhụ foto nke ụdị HPMC dị iche iche n'okpuru microscope:①Mba ọzọ E50 na anụ ụlọ 60YT50 HPMC ma na-eweta ihe aggregated Ọdịdị n'okpuru microscope, molekul Ọdịdị nke anụ ụlọ 60YT50HPMC bụ kọmpat na edo, na molekul Ọdịdị nke mba ọzọ E50 na-agbasasị;②The aggregated ala nke anụ ụlọ 60YT50 HPMC Ọdịdị nwere ike theoretically ibelata interfacial esemokwu n'etiti vinyl chloride na mmiri, na-enyere vinyl chloride agbasa uniformly na stably na mmiri ọkara, ya bụ, n'ihi na hydroxypropyl ọdịnaya nke 60YT50 HPMC bụ ubé elu, ya. na-eme ka ọ dịkwuo hydrophilic, ebe ES0 N'ihi nnukwu ọdịnaya nke methoxyl dị iche iche, n'ụzọ doro anya, ọ na-arụ ọrụ njigide roba siri ike;③na-egbochi njikọ nke vinyl chloride ụmụ irighiri mmiri na mmalite nke usoro polymerization;④na-egbochi njikọ nke mkpụrụ ndụ polymer n'etiti etiti na nke ikpeazụ nke usoro polymerization. Nchịkọta mkpokọta na-amụkarị usoro nhazi nke mkpụrụ ndụ cellulose (crystalline na amorphous mpaghara, nha na ụdị nke cell unit, ụdị nkwakọ ngwaahịa nke ụdọ molekụla na cell unit, nha nke crystallites, wdg), nhazi nhazi (ntụgharị). molecular yinye na Orientation nke microcrystals), wdg, na-enyere aka zuru grafting mmeghachi omume nke a nụchara anụcha owu n'oge etherification, ma na-mma na intrinsic àgwà na nkwụsi ike nke HPMC.

3.5 State nke HPMC aqueous ngwọta n'ụlọ na ná mba ọzọ

The anụ ụlọ na mba ọzọ HPMC e kwadebere n'ime 1% aqueous ngwọta, na ìhè transmittance nke anụ ụlọ 60YT50 HPMC bụ 93%, na nke mba ọzọ E50 HPMC bụ 94%, na e nwere ihu ọma dịghị ihe dị iche na ìhè transmittance n'etiti abụọ.

A na-emepụta ngwaahịa HPMC nke anụ ụlọ na nke mba ọzọ n'ime 0.5% mmiri mmiri, na ngwọta mgbe HPMC cellulose gbazere hụrụ. Enwere ike ịhụ site na anya gba ọtọ na nghọta nke ha abụọ dị ezigbo mma, doo anya ma doo anya, ọ dịghịkwa nnukwu eriri na-adịghị edozi, nke na-egosi na àgwà HPMC na-ebubata na HPMC nke ụlọ ka mma. Igwe ọkụ dị elu nke ngwọta na-egosi na HPMC na-emeghachi omume n'ụzọ zuru ezu na usoro nke alkalization na etherification, na-enweghị nnukwu ihe adịghị ọcha na eriri na-adịghị ike. Nke mbụ, ọ nwere ike ịmata àgwà HPMC n'ụzọ dị mfe. Mmiri mmiri na-acha ọcha na afụ ikuku.

4. HPMC dispersant ngwa pilot ule

Iji nwetakwuo nkwenye nke dispersion arụmọrụ nke anụ ụlọ HPMC na polymerization usoro na mmetụta ya na àgwà nke PVC resin, R & D otu nke Shandong Yiteng New Materials Co., Ltd ji anụ ụlọ na mba ọzọ HPMC ngwaahịa dị ka dispersants, na anụ ụlọ HPMC. na ibubata PVA dị ka ndị na-ekesa. A nwalere àgwà nke resins nke ụdị HPMC dị iche iche kwadebere dị ka ndị na-ekesa na China, na-enyocha ma tụlee mmetụta ngwa nke HPMC na resin PVC.

4.1 Usoro nnwale pilot

Emere mmeghachi omume polymerization na kettle polymerization 6 m3. Iji kpochapụ mmetụta nke àgwà monomer na àgwà nke resin PVC, onye na-anya ụgbọelu na-eji usoro calcium carbide mee ihe na-emepụta vinyl chloride monomer, na mmiri nke monomer erughị 50.×10-6. Mgbe oghere nke kettle polymerization ruru eru, gbakwunye vinyl chloride tụrụ na mmiri na-enweghị ion na kettle polymerization n'usoro, wee gbakwunye dispersant na ihe mgbakwunye ndị ọzọ achọrọ n'ime ketul ahụ n'otu oge mgbe ị tụchara ya. Mgbe tupu nkeji iri na ise, mmiri ọkụ na 90°E webatara C n'ime jaket ahụ, na-ekpo ọkụ na okpomọkụ nke polymerization iji malite mmeghachi omume polymerization, na mmiri jụrụ oyi na-abanye na jaket ahụ n'otu oge ahụ, DCS na-achịkwa okpomọkụ mmeghachi omume. Mgbe nrụgide nke kettle polymerization na-adaba na 0.15 MPa, ọnụego ntụgharị polymerization ruru 85% ruo 90%, na-agbakwunye njedebe iji kwụsị mmeghachi omume ahụ, na-agbake vinyl chloride, nkewa na ihicha iji nweta resin PVC.

4.2 pilot ule nke anụ ụlọ 60YT50 na mba ọzọ E50 HPMC resin mmepụta

Site àgwà ntụnyere data nke anụ ụlọ 60YT50 na mba ọzọ E50 HPMC na-emepụta PVC resin, ọ pụrụ ịhụ na viscosity na plasticizer absorption nke anụ ụlọ 60YT50 HPMC PVC resin yiri ndị yiri mba ọzọ HPMC ngwaahịa, na ala na-agbanwe agbanwe okwu, ezi onwe onye. - ezuru, The ruru eru ọnụego bụ 100%, na abụọ bụ isi nso na okwu nke resin àgwà. Ọdịnaya methoxyl nke E50 mba ọzọ dị ntakịrị elu karịa nke 60YT50 HPMC ụlọ, yana njigide roba ya siri ike. Resin PVC enwetara dịtụ mma karịa ndị na-ekesa HPMC ụlọ n'ihe gbasara nnabata plasticizer na njupụta pụtara ìhè.

4.3 Domestic 60YT50 HPMC na PVA ebubata na-eji dị ka dispersant na-emepụta resin pilot ule.

4.3.1 Ogo nke resin PVC emepụtara

A na-emepụta resin PVC site na ụlọ 60YT50 HPMC ma bubata PVA dispersant. The àgwà tụnyere data nwere ike hụrụ: iji otu àgwà 60YT50HPMC na ibubata PVA dispersant usoro na-emepụta PVC resin karị, n'ihi na theoretically 60YTS0 HPMC dispersant nwere ike dispersion ikike na ezi roba njigide arụmọrụ. Ọ dịghị mma dị ka usoro mgbasa ozi PVA. The pụtara njupụta nke PVC resin emepụtara 60YTS0 HPMC mgbasa usoro bụ ubé ala karịa nke PVA dispersant, na plasticizer absorption dị mma, na nkezi urughuru size nke resin bụ finer. The ule results nwere ike ihu ọma na-egosipụta dị iche iche e ji mara nke 60YT50 HPMC na PVA dispersant usoro, na-egosipụtakwa uru na adịghị ike nke abụọ dispersants si arụmọrụ nke PVC resin. N'ihe banyere microstructure, ihe nkiri elu nke HPMC dispersant resin Thin, resin dị mfe iji plasticize n'oge nhazi.

4.3.2 Ihe nkiri ọnọdụ nke PVC resin irighiri n'okpuru eletrọn microscope

N'ileba anya na microstructure nke resin particles, resin particles nke HPMC dispersant na-emepụta nwere ọkpụrụkpụ "ihe nkiri" dị ntakịrị microscopic; The resin ụmụ irighiri ihe nke PVA dispersant mepụtara nwere thicker microscopic "ihe nkiri". Tụkwasị na nke ahụ, maka ndị na-emepụta calcium carbide resin nwere nnukwu ọdịnaya nke vinyl chloride monomer adịghị ọcha, iji hụ na nkwụsi ike nke usoro usoro ahụ, ha ga-abawanye ụba nke dispersant, nke na-ebute mmụba nke nkwụnye elu nke resin particles. na thickening nke "ihe nkiri". Ịrụ ọrụ plasticizing nhazi ala adịghị mma.

4.4 Nnwale pilot nke ọkwa dị iche iche nke HPMC iji mepụta resin PVC

4.4.1 Ogo nke resin PVC emepụtara

N'iji akara ule dị iche iche nke HPMC (nke nwere viscosities dị iche iche na ọdịnaya hydroxypropyl) dị ka onye na-ekesa, ọnụọgụ nke dispersant bụ 0.060% nke vinyl chloride monomer, na nkwusioru polymerization nke vinyl chloride na-eme na 56.5.° C iji nweta nkezi urughuru nha, njupụta pụtara ìhè, na plasticizer absorption nke PVC resin.

Enwere ike ịhụ na nke a:①Tụnyere 65YT50 HPMC mgbasa usoro, 75YT100 nwere a viscosity nke 65YT50 HPMC na-erughị 75YT100HPMC, na hydroxypropyl ọdịnaya bụkwa ihe na-erughị 75YT100HPMC, mgbe methoxyl ọdịnaya bụ elu karịa 75YT100HPMC. Dị ka usoro nyocha nke dispersants, viscosity na hydroxypropyl, mbelata nke isi ọdịnaya ga-apụghị izere ezere na-eduga mbelata nke dispersing ike nke HPMC, na mmụba nke methoxy ọdịnaya ga-akwalite nkwalite nke nrapado njide ikike nke dispersant, ya bụ, 65YT50 HPMC mgbasa usoro ga-eme ka nkezi urughuru size nke PVC resin na-abawanye (adighi rarii urughuru size),The pụtara njupụta na-abawanye na plasticizer absorption na-abawanye;②Tụnyere 60YT50 HPMC mgbasa usoro, na hydroxypropyl ọdịnaya nke 60YT50 HPMC dị ukwuu karịa nke 65YT50 HPMC, na methoxy ọdịnaya nke abụọ dị nso na elu. Dị ka dispersant tiori, elu nke hydroxypropyl ọdịnaya, ike dispersing ike nke dispersant, otú dispersing ike nke 60YT50 HPMC na-enwekwukwa; N'otu oge ahụ, ihe abụọ methoxyl dị nso na ọdịnaya dị elu, ikike njigide gluu na-esiwanye ike, Na usoro mgbasa ozi HPMC 60YT50 na 65YT50 nke otu àgwà ahụ, resin PVC mepụtara site na 60YT50HPMC karịa 65YT50 HPMC mgbasa. usoro ga-enwe a nta nkezi urughuru size (ezi urughuru size) na ala doro anya njupụta, n'ihi na methoxyl ọdịnaya na dispersion usoro dị nso ( roba njigide arụmọrụ), dapụtara na yiri plasticizer absorption. Nke a bụkwa ihe mere 60YT50 HPMC na-ejikarị eme ihe na ụlọ ọrụ resin PVC mgbe ị na-ahọrọ PVA na HPMC composite dispersants. N'ezie, ma 65YT50 HPMC ezi uche na-eji na composite dispersion usoro usoro kwesịkwara kpebisiri ike dị ka kpọmkwem resin àgwà egosi.

4.4.2 morphology nke PVC resin ahụ n'okpuru microscope

The urughuru morphology nke PVC resin mepụtara 2 ụdị 60YT50 HPMC dispersants na dị iche iche hydroxypropyl na methoxyl ọdịnaya n'okpuru mikroskopu nwere ike hụrụ: na-abawanye nke hydroxypropyl na methoxyl ọdịnaya, dispersion ike nke HPMC, njigide The gluu ike na-emewanye. E jiri ya tụnyere 60YT50 HPMC (8.7% hydroxypropyl mass fraction, 28.5% methoxyl mass fraction), ihe ndị na-emepụta PVC resin na-eme mgbe niile, na-enweghị ọdụ, na ihe ndị ahụ na-atọ ụtọ.

4.5 mmetụta nke 60YT50 HPMC onunu ogwu na àgwà nke PVC resin

The pilot test na-eji 60YT50 HPMC dị ka otu dispersant na a uka nta nke methodyl otu 28.5% na a uka nta nke hydroxypropyl otu 8.5%. Nkezi urughuru nha, njupụta pụtara ìhè, na nnabata plasticizer nke resin PVC enwetara site na ime ihe nkwusioru polymerization nke vinyl chloride na 5.°C.

Ọ nwere ike ịhụ na dị ka ego nke dispersant na-abawanye, ọkpụrụkpụ nke dispersant oyi akwa adsorbed na droplet elu na-abawanye, nke enhances dispersant arụmọrụ na nrapado njigide ikike nke dispersant, n'ihi na mbelata nkezi urughuru size nke PVC. resin na mbelata na mpaghara elu. Njupụta pụtara ìhè na-abawanye na nnabata plasticizer na-ebelata.

5 Nkwubi okwu

(1) Nrụ ọrụ ngwa nke resin PVC kwadebere site na ngwaahịa HPMC ụlọ eruola ọkwa nke ngwaahịa ebubata.

(2) Mgbe HPMC na-eji dị ka otu dispersant, ọ nwekwara ike na-emepụta PVC resin ngwaahịa na mma egosi.

(3) E jiri ya tụnyere PVA dispersant, HPMC na PVA dispersant, ụdị abụọ nke mgbakwunye na-eji naanị dị ka dispersant na-emepụta resin, na resin egosi emepụta nwere onwe ha uru na ọghọm. HPMC dispersant nwere elu elu ọrụ na ike monomer mmanụ droplet dispersing arụmọrụ. Ọ nwere otu arụmọrụ dị ka PVA 72 .5% alcoholysis ogo arụmọrụ yiri ya.

(4) N'okpuru otu àgwà ọnọdụ, dị iche iche akara ule nke HPMC nwere dị iche iche methoxyl na hydroxypropyl ọdịnaya, nke nwere dị iche iche ojiji maka imezi àgwà index nke PVC resin. 60YT50 HPMC dispersant nwere mma dispersion arụmọrụ karịa 65YT50 HPMC ruru ya elu hydroxypropyl ọdịnaya; 65YT50 HPMC N'ihi ọdịnaya methoxy dị elu nke onye na-ekesa, ọrụ njigide rọba siri ike karịa nke 60YT50HPMC.

(5) Na-emekarị na mmepụta nke PVC resin, ego nke 60YT50HPMC dispersant eji dị iche iche, na mgbanwe nke àgwà na arụmọrụ nke PVC resin nwekwara mgbanwe doro anya. Mgbe usoro onunu ogwu nke 60YT50 HPMC dispersant na-abawanye, nkezi urughuru size nke PVC resin mbelata, o doro anya njupụta na-abawanye, na plasticization. Ọnụ ọgụgụ nnabata nke onye nnọchi anya na-ebelata, ma ọzọ.

Ke adianade do, tụnyere PVA dispersant, HPMC na-eji na-emepụta resin usoro ngwaahịa, nke na-egosi oké elasticity na nkwụsi ike ka parameters dị ka polymerization ketulu ụdị, olu, edemede, wdg, na nwere ike ibelata onu nke akụrụngwa ketulu mgbidi ịrapara n'ahụ. kettle, na ibelata resin n'elu film Ọkpụrụkpụ, na-adịghị egbu egbu resin, elu thermal kwụsie ike, welie nghọta nke resin downstream ngwaahịa nhazi, wdg Na mgbakwunye, anụ ụlọ HPMC ga-enyere PVC emepụta ibelata mmepụta ego, melite ahịa asọmpi, na-eweta ezi mma. uru akụ na ụba.