HPMC inoita basa rei muMvura Base Paints/ Coatings

Hydroxypropyl Methyl Cellulose(HPMC) isiri-ionic cellulose ether polymer yakavakirwa pa cellulose, yakasikwa polima inotorwa kubva kunatsa donje linter.

Nezvinenge zvese zvimiro zveCellulose: Inokurumidza kunyungudika mumvura inotonhora, Yakagadzikana Gobvu, Hapana fomu mapundu, Yakanyanya Kujeka mumvura yakavakirwa mhinduro, seyakakora, dispersant uye stabilizer muindasitiri yekupfeka, inoshandiswa mumvura-based pendi & coatings mugiredhi rekuvaka.

Hydroxypropyl Methylcellulose (HPMC) inotora basa rinokosha uye rakawanda mumunda wekuputira kushandiswa.

Panyaya ye rheological properties, HPMC inoita seyakakosha modifier. Inogona kunyatso gadzirisa viscosity yekugadzirwa kwekuvhara, zvichiita kuti kuvhara kubudirire kuyerera kwakakodzera panguva yekushanda. Izvi hazvigone chete kugovera kugovaniswa kwejasi pane substrate pamusoro asi zvakare zvinobatsira kudzora ukobvu hweiyo coating layer nemazvo. Semuyenzaniso, mukupfapfaidza machira, iyo viscosity yakakodzera inodzorwa neHPMC inova nechokwadi chekuti iyo yekupfekedza zvinhu inogona kuve neatomu yakaenzana uye inonamira zvakanaka kune yakanangwa nzvimbo.

Nezve kugadzikana, HPMC inoshanda seyakavimbika stabilizer. Inogona kudzivirira kuparadzaniswa uye sedimentation yezvikamu zvakasiyana-siyana mukati mekuputira, kunyanya pigments uye fillers. Izvi zvinobatsira kuchengetedza homogeneity uye kugadzikana kwechifukidzo nekufamba kwenguva, nekudaro kuve nechokwadi chehutano hunoenderana nekuita kwekupfeka. Mumachira emvura, HPMC inonyanya kushanda mukudzivirira kuunganidzwa uye kunaya kwemvura-inonyungudika zvinhu, izvo zvakakosha pakuchengetedza kwenguva refu uye kushandiswa kwemachira.

 

Zvakare, muchikamu chekugadzirwa kwemafirimu, HPMC inoitawo mipiro yakakosha. Inobatanidzwa mukuumbwa kwefirimu inopfuurira uye yakafanana pane substrate. Nekudyidzana nezvimwe zvikamu mukupfeka, HPMC inobatsira kuvandudza kunamatira kwefirimu kune substrate uye kuwedzera simba rayo remagetsi uye kusimba. Izvi zvakakosha kuti iyo coating irambe kushushikana kwakasiyana kwezvakatipoteredza uye kupfeka pamusoro pehupenyu hwayo hwesevhisi.

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Mukuita kwekugadzira kupfekedza, hydroxypropyl methyl cellulose, seye rheological control agent, inogona kugadzirisa viscosity uye rheology yejasi uye kugadzirisa mashandiro ekuvaka kwejasi.

Hydroxypropyl methyl cellulose inoshandiswa seyakagadzika mumachira, iyo inogona kuvandudza kugadzikana uye kupararira kwejasi, kudzivirira pigment kugadzirisa uye condensation, uye kuve nechokwadi chekufanana kwejasi.

HPMC inoshanda seyakakora mumiriri mumvura-yakavakirwa pendi. Iyo inowedzera viscosity yekuumbwa kwepende, ichipa zvirinani kutonga pamusoro pekushandisa uye kudzivirira kudonha kana kudonha. HPMC inobatsira kuzadzisa inodiwa kuenderana uye kuumbwa kwepende.

Mumabhanditi emvura, hydroxypropyl methyl cellulose, semulsifier, inogona kuvandudza emulsion kugadzikana kwejasi uye kudzivirira kuvhara delamination uye kunaya kwemvura.

Mukunze kwemadziro ekuputira, hydroxypropyl methyl cellulose senge anti-cracking agent inogona kuvandudza kutsemuka kupikisa uye kuchinjika kwejasi uye kudzivirira kuputika mukuita kwekuvaka.

HPMC ine yakanakisa kuchengetedza mvura zvivakwa, izvo zvinobatsira mukugadzira pendi. Inobatsira kudzivirira kukurumidza kubuda kwemvura kubva papende panguva yekushandiswa, nokudaro kuwedzera nguva yakazaruka uye kubvumira kushanda zviri nani uye brushability.

HPMC inoshanda sebhainda mukuumbwa kwependi, ichisimbisa kunamira kwependi kune akasiyana substrates. Inovandudza kuumbwa kwefirimu uye inowedzera kusimba uye kushorwa kwependi yekuputira.

HPMC inobatsira mukudzikamisa pigments uye zvimwe zvimedu zvakasimba mukugadzira pendi. Iyo inodzivirira kugadzirisa uye sedimentation yezvimedu, kuve nechokwadi chekugovera yunifomu uye kuenderana kwemavara mukati mepende.

HPMC inoderedza kupfachura panguva yekupenda pendi. Inonatsiridza kuyerera uye kuenzana kwependi, zvichikonzera kutsetseka uye zvakanyanya kupedzisa.

HPMC inogadzirisa rheological zvimiro zvepende, senge viscosity, shear kuonda maitiro, uye kuyerera maitiro. Inopa kutonga kuri nani pamusoro pemaitiro ekushandisa uye inovandudza iyo brushability uye roller kufukidzwa kwepende.

HPMC inosimudzira kuita kwese kwefirimu repende. Iyo inovandudza abrasion kuramba, kukwesha kuramba, uye kushomeka kwemvura kweakaomeswa pendi coating. HPMC inobatsirawo kuchinjika uye kusimba kwefirimu repende, kuderedza mukana wekutsemuka kana kuputika.

HPMC inoshanda senge antifoaming agent mukugadzira pendi. Inobatsira kuderedza kuumbwa kwefuro panguva yekusanganiswa kwepende uye kushandiswa, zvichiita kuti kupera kwakapfava.

Ndinokutendai nekutsigira JINJI CHEMCIAL.