Sumo pfupi ye starch ether

Etherified starch is starch substituent ether inoumbwa nekuita kwemapoka ehydroxyl mumamorekuru estarch ane zvinhu zvinobatika, zvinosanganisira hydroxyalkyl starch, carboxymethyl starch, uye cationic starch. Sezvo etherification ye starch inovandudza viscosity kugadzikana uye ether bond haisi nyore hydrolyzed pasi pemamiriro akasimba ealkaline, etherified starch inoshandiswa muminda yakawanda yeindasitiri. Carboxymethyl starch (CMS) idenatured fomu yeanionic yakasikwa zvigadzirwa uye yakasikwa polymer polyelectrolyte ether inonyungudika mumvura inotonhora. Parizvino, cMS yakashandiswa zvakanyanya mukudya, mushonga, peturu, makemikari ezuva nezuva, machira, kugadzira mapepa, anonamira, uye maindasitiri ependi. the

Muindasitiri yezvekudya, CMS haina chepfu uye haina kukuvadza kumuviri wemunhu uye inogona kushandiswa semhando yekuvandudza. Chigadzirwa chakapedzwa chine chimiro chakanakisa, ruvara uye kuravira, zvichiita kuti chive chakatsetseka, chakakora uye chakajeka; CMS inogona zvakare kushandiswa sechikafu chekuchengetedza. Muindasitiri yemishonga, CMS inoshandiswa sepiritsi disintegrant, plasma volume expander, thickener for cake-type gadziriro uye dispersant drug for oral suspoemulsion. CMS inoshandiswa zvakanyanya muindasitiri yemafuta semudhaka kurasikirwa kwemvura. Iyo ine munyu kuramba, inogona kuramba munyu kusvika pakuzara, uye ine anti-slump mhedzisiro uye imwe anti-calcium kugona. Iyo yemhando yepamusoro yekurasikirwa kwemvura inoderedza. Nekudaro, nekuda kwekushomeka kwekushisa kwekudzivirira, inogona kushandiswa chete mumabasa asina kudzika matsime. CMS inoshandiswa kuyera saizi yeshinda, uye ine hunhu hwekukurumidza kupararira, yakanaka yekugadzira firimu chivakwa, yakapfava saizi firimu, uye nyore deizing. CMS inogona zvakare kushandiswa se tackifier uye modifier muakasiyana kudhinda uye kudhaya mafomati. CMS inoshandiswa seanonamira mumapepa ekuputira, izvo zvinogona kuita kuti iyo coating ive yakanaka kugadzika uye viscosity kugadzikana. Zvinhu zvaro zvekuchengetedza mvura zvinodzora kupinza kwekunamatira mujinga repepa, zvichipa bepa rakaputirwa zvinhu zvakanaka zvekudhinda. Mukuwedzera, CMS inogonawo kushandiswa se-viscosity reducer yemarasha slurry uye mafuta-marasha akavhenganiswa mafuta slurry, kuitira kuti ive yakanaka kumisa emulsion kugadzikana uye fluidity. Inogona zvakare kushandiswa setackifier yemvura-based latex pendi, chelating agent yeheavy metal sewage kurapwa, uye yekuchenesa ganda muzvizoro. Zvimiro zvayo zvemuviri ndezvizvi:

PH kukosha: Alkaline (5% aqueous solution) Solubility: Inogona kunyungudutswa mumvura inotonhora Fineness: Less than 500μm Viscosity: 400-1200mpas (5% aqueous solution) Kuenderana nezvimwe zvinhu: Yakanaka nezvimwe zvekuvaka admixtures Kuenderana

1. Basa guru

Yakanaka kwazvo nekukurumidza thickening kugona: yepakati viscosity, kuchengetwa kwemvura yakakwirira;

Iyo dosage idiki, uye yakaderera dosi inogona kuwana yakakwirira mhedzisiro;

Kuvandudza anti-sag kugona kwezvinhu pachayo;

Iine lubricity yakanaka, iyo inogona kuvandudza mashandiro ekushandisa kwezvinhu uye kuita kuti basa rive nyore. the

2. chiyero chekushandisa

Starch ether inokodzera marudzi ese e (simende, gypsum, lime-calcium) mukati uye kunze kwemadziro putty, uye marudzi ese ekutarisana nedhaka uye plastering dhaka. Inokurudzirwa dosi: 0.05% -0.15% (yakayerwa mumatani), iyo chaiyo inoshandiswa inoenderana nechiyero chaicho. Inogona kushandiswa semusanganiswa wesimende-based zvigadzirwa, gypsum-based zvigadzirwa uye lime-calcium zvigadzirwa. Starch ether ine kuenderana kwakanaka nemamwe mavakirwo uye admixtures; inonyanya kukodzera pakuvaka misanganiswa yakaoma sedhaka, zvinonamira, plastering uye rolling zvinhu. Starch ethers uye methyl cellulose ethers (Tylose MC mamakisi) anoshandiswa pamwechete mukuvaka misanganiswa yakaoma kupa kukora kwepamusoro, chimiro chakasimba, sag kuramba uye nyore kubata. Iko viscosity yematope, zvinonamira, plasters uye roll renders ine yakakwirira methyl cellulose ethers inogona kuderedzwa nekuwedzera kwe starch ethers. the

3. Kurongwa kwe starch ethers

Starch ethers inoshandiswa mumatope inogadziridzwa kubva kune yakasikwa mapolymers emamwe mapolysaccharides. Zvakadai sembatatisi, chibage, mufarinya, guar beans zvichingodaro. the

General modified starch

Starch ether yakagadziridzwa kubva mumbatatisi, chibage, mufarinya, zvichingodaro. ine kuchengetedzwa kwemvura kwakadzikira pane cellulose ether. Nekuda kweiyo dhigirii yakasiyana yekushandurwa, kugadzikana kune acid uye alkali kwakasiyana. Zvimwe zvigadzirwa zvakakodzera kushandiswa mumadhaka egypsum, asi zvimwe zvinogona kushandiswa mumatope ane simende. Iko kushandiswa kwestarch ether mudhaka kunonyanya kushandiswa sechikobvu kuvandudza chidziviriro chekusagadzika kwedhaka, kuderedza kunamatira kwedhaka rakanyorova, uye kurebesa nguva yekuvhura. Starch ethers inowanzoshandiswa pamwe chete ne cellulose, kuitira kuti zvimiro uye zvakanakira zvezvigadzirwa zviviri izvi zvinopindirana. Sezvo zvigadzirwa zve starch ether zvakachipa zvakanyanya pane cellulose ether, kuiswa kwestarch ether mudhaka kuchaunza kuderedzwa kwakanyanya mumutengo wekugadzira dhaka. the

guar ether

Guar gum ether imhando yestarch ether ine yakakosha zvimiro, iyo inogadziridzwa kubva kune yakasikwa guar bhinzi. Kunyanya ne etherification reaction yeguar gum uye acrylic inoshanda boka, chimiro chine 2-hydroxypropyl inoshanda boka inoumbwa, inova polygalactomannose chimiro.

(1) Kana ichienzaniswa neselulosi ether, guar gum ether inonyanya kunyungudika mumvura. Iyo pH kukosha haina mhedzisiro pakuita kweguar ethers. the

(2) Pasi pemamiriro ekuderera kweviscosity uye yakaderera dosage, guar gum inogona kutsiva cellulose ether muhuwandu hwakaenzana, uye ine yakafanana kuchengetedza mvura. Asi kuwirirana, anti-sag, thixotropy uye zvichingodaro zviri pachena kuti zvakagadziridzwa. (3) Pasi pemamiriro epamusoro viscosity uye chiyero chepamusoro, guar gum haigoni kutsiva cellulose ether, uye kushandiswa kwakasanganiswa kwezviviri kuchaita zviri nani.

(4) Kushandiswa kweguar gum mu gypsum-based mortar kunogona kuderedza zvakanyanya kunamatira panguva yekuvaka uye kuita kuti chivakwa chive chakapfava. Iyo haina mhedzisiro yakaipa pakugadzika nguva uye simba regypsum mortar. the

(5) Kana guar gum ichishandiswa mune simende-yakavakirwa masonry uye plastering dhaka, inogona kutsiva cellulose ether muhuwandu hwakaenzana, uye inopa dhaka nekusagirira kurinani, thixotropy uye kutsetseka kwekuvaka. the

(6) Guar gum inogona zvakare kushandiswa muzvigadzirwa zvakaita semataira anonamira, pasi-yega-leveling ejenti, inodzivirira mvura putty, uye polymer dhaka yekuvharisa madziro. the

(7) Sezvo mutengo weguar gum wakaderera zvakanyanya pane we cellulose ether, kushandiswa kweguar gum mumatope kuchaderedza zvakanyanya mari yekugadzirwa kwechigadzirwa. the

Modified mineral water retention thickener

Iyo mvura-inochengetedza gobvu yakagadzirwa nemaminerari echisikigo kuburikidza nekugadzirisa uye kusanganisa yakashandiswa muChina. Maminerari makuru anoshandiswa kugadzirira mvura-inochengetedza thickeners ndeaya: sepiolite, bentonite, montmorillonite, kaolin, etc. Maminerari aya ane mamwe ekuchengetedza mvura uye kukora zvinhu kuburikidza nekugadziridzwa senge coupling agents. Rudzi urwu rwemvura inochengetedza mvura inoiswa mudhaka ine hunhu hunotevera. the

(1) Inogona kuvandudza zvakanyanya mashandiro edhaka rakajairwa, uye kugadzirisa matambudziko ekusashanda zvakanaka kwesamende dhaka, kuderera kwesimba revhu rakasanganiswa, uye kushomeka kwemvura. the

(2) Zvigadzirwa zvedhaka zvine mazinga akasiyana esimba kune zvakajairika maindasitiri uye zvivakwa zvevagari zvinogona kugadzirwa. the

(3) Mutengo wezvinhu wakaderera zvakanyanya pane we cellulose ether uye starch ether.

(4) Kuchengetedzwa kwemvura kwakaderera kupfuura kweiyo organic water retention agent, iyo yakaoma shrinkage kukosha kwedhaka rakagadzirirwa yakakura, uye kubatana kunoderedzwa. the

4. Kushandiswa kwe starch ether

Starch ether inonyanya kushandiswa mukuvaka dhaka, iyo inogona kukanganisa kuenderana kwedhaka rakavakirwa gypsum, simende uye lime, uye kushandura kuvaka uye sag kuramba kwedhaka. Starch ethers inowanzoshandiswa pamwe chete neasina-modified uye modified cellulose ethers. Inokodzera ese ari maviri asina kwaakarerekera uye alkaline masisitimu, uye inoenderana neakawanda ekuwedzera mune gypsum uye simende zvigadzirwa (senge surfactants, MC, starch uye mvura-soluble polymers akadai polyvinyl acetate).

Main features:

(1) Starch ether inowanzoshandiswa pamwe chete nemethyl cellulose ether, iyo inoratidza yakanaka synergistic effect pakati pezviviri. Kuwedzera huwandu hwakakodzera hwe starch ether kune methyl cellulose ether inogona kuvandudza zvakanyanya sag resistance uye kutsvedza kuramba kwedhaka, ine goho rakakura. the

(2) Kuwedzera huwandu hwakakodzera hwe starch ether kune dhaka rine methyl cellulose ether inogona kuwedzera zvakanyanya kuwirirana kwedhaka uye kugadzirisa mvura, zvichiita kuti chivakwa chive chakapfava uye kukwenya kunyore. (3) Kuwedzera huwandu hwakakodzera hwe starch ether kudhaka rine methyl cellulose ether kunogona kuwedzera kuchengetwa kwemvura kwedhaka uye kuwedzera nguva yakazaruka. the

(4) Starch ether ikemikari yakagadziridzwa starch ether inonyungudika mumvura, inoenderana nezvimwe zvinowedzera muvhu rakaoma dhaka, rinoshandiswa zvakanyanya mumatairi anonamira, kugadzirisa matope, plastering plasters, mukati nekunze kwemadziro putty, gypsum-based embedded Joints uye zvinhu zvekuzadza. , interface agents, masonry dhaka.

Hunhu hwestarch ether kunyanya huri mu: ⑴kunatsiridza sag resistance; ⑵ kunatsiridza kuvaka; ⑶ kuwedzera dhaka goho, yakakurudzirwa dosi: 0.03% kusvika 0.05%.