Ọrụ p-hydroxypropyl starch ether na ngwa agha

Starch ether bụ okwu n'ozuzu maka klas nke starches gbanwetụrụ nwere ether bonds na molecule, makwaara dị ka etherified starch, nke a na-ejikarị na nkà mmụta ọgwụ, nri, textile, mpempe akwụkwọ, kemịkalụ kwa ụbọchị, mmanụ ala na ụlọ ọrụ ndị ọzọ. Taa, anyị na-akọwakarị ọrụ starch ether na ngwa agha:

1) Mee ka ngwa agha ahụ sie ike, mụbaa mgbochi-sagging, mgbochi-sagging na rheological Njirimara nke ngwa agha ahụ.

Dịka ọmụmaatụ, n'ịrụ ihe mkpuchi tile, putty, na plasta mortar, karịsịa ugbu a na n'ibu spraying na-achọ nnukwu mmiri mmiri, dị ka na gypsum dabeere na ngwa agha, ọ dị mkpa karịsịa (gypsum na-efesa igwe na-achọ nnukwu mmiri mmiri ma ọ ga-eme ka ọ dị njọ. , starch Ether nwere ike mejupụta maka ụkọ a). Nke ahụ bụ, mgbe a na-etinye ike mpụga, viscosity na-ebelata, na-eme ka arụ ọrụ na-arụ ọrụ na pumpability dịkwuo elu, na mgbe a na-ewepụ ike dị n'èzí, viscosity na-abawanye, na-eme ka nkwụsị nke nkwụsị. Maka ihe na-eme ugbu a na-abawanye ebe tile, ịgbakwụnye starch ether nwere ike imeziwanye nkwụghachi nke nrapado taịlị.

2) Ogologo oge mmeghe

Maka adhesives tile, ọ nwere ike imezu ihe achọrọ nke ihe mkpuchi tile pụrụ iche (Klas E, 20min gbatịpụrụ ruo 30min iji ruo 0.5MPa) na-agbatị oge mmeghe. Starch ether nwere ike ime ka elu nke gypsum base na ciment mortar dị nro, dị mfe itinye, ma nwee mmetụta ịchọ mma. Ọ bara uru nke ukwuu maka plasta ngwa agha na akwa oyi akwa ịchọ mma dị ka putty.

1. Starch ether nwere ike imeziwanye ihe mgbochi sag na mgbochi nke ngwa agha

Cellulose ether na-enwekarị ike imeziwanye viscosity na njigide mmiri nke usoro ahụ ma ọ nweghị ike imeziwanye ihe mgbochi na-adịghị mma.

2. Thickening na viscosity

N'ozuzu, viscosity nke cellulose ether bụ ihe dị ka iri puku kwuru iri puku, mgbe viscosity nke starch ether bụ ọtụtụ narị na ọtụtụ puku, ma nke a apụtaghị na ndim ihe onwunwe nke starch ether ka ngwa agha adịghị mma dị ka nke cellulose ether. na ndim usoro nke abụọ dị iche.

3. Mgbochi-slip arụmọrụ

E jiri ya tụnyere cellulose ethers, starch ethers nwere ike ịbawanye uru mbụ nke nrapado taịlị, si otú a na-emeziwanye ihe mgbochi ha.

4. ikuku-entraining

Cellulose ether nwere ihe na-eme ka ikuku dị ike, ebe starch ether enweghị ihe na-eme ka ikuku dị.