Kushandiswa kwehydroxypropyl methylcellulose mudhaka

1. Kuchengeta mvura

Hydroxypropyl methylcellulose yekuvaka inodzivirira hunyoro kubva pakupinda mumadziro. Nhamba yakakodzera yemvura inoramba iri mudhaka, kuitira kuti simiti ive nenguva yakareba yekunyorova. Kuchengetwa kwemvura kwakaenzana ne viscosity ye cellulose ether solution mudhaka. Iyo yakakwirira viscosity, zviri nani kuchengetedza mvura. Kamwe mamorekuru emvura akawedzera, kuchengetwa kwemvura kunoderera. Nokuti nokuda kwechiyero chakafanana chekuvaka-chaiyo hydroxypropyl methylcellulose solution, kuwedzera kwehuwandu hwemvura kunoreva kuderera kweviscosity. Kuvandudzwa kwekuchengetedza mvura kuchaita kuti kuwedzerwa kwenguva yekuporesa kwedhaka riri kuvakwa.

2. Kuvandudza kuvakwa

Iko kushandiswa kwehydroxypropyl methylcellulose HPMC kunogona kuvandudza kuvakwa kwedhaka, kuita kuti chigadzirwa chevhu ive nani kuparadzira kuita, kuderedza kunamatira kune zvishandiso, kuita kuti kuvaka kuve nyore, uye kuderedza kushanda nesimba kwevashandi.

3. Bubble content

Yakakwira mhepo bubble yemukati inoburitsa zvirinani goho redhaka uye kushanda, kuderedza kutsemuka kuumbwa. Iyo inoderedzawo kukosha kwekusimba, zvichiita kuti "liquefaction" chiitiko. Mhepo bubble zvemukati zvinowanzoenderana nekukurudzira nguva. Zvigadzirwa zvinoshandiswa zvakanyanya kuvandudza mashandiro e hydraulic zvivakwa zvekuvaka, senge simende uye gypsum. Mune simende-yakavakirwa madhaka, inovandudza kuchengetedza kwemvura, inowedzera kururamisa uye kuvhurika nguva, uye inoderedza kusagika.

4. Anti-sagging

Doka rakanaka risingapindi muvhu (sag-resistant motar) zvinoreva kuti kana ikaiswa mumitsetse mikobvu hapana ngozi yekusaga kana kuyerera. Sag kuramba inogona kuvandudzwa nekuvaka-chaiyo hydroxypropyl methylcellulose. Kunyanya iyo ichangobva kugadzirwa hydroxypropyl methylcellulose yekuvaka inogona kupa zvirinani anti-sagging zvimiro zvedhaka.

5. Kugona kunyorova

Yakakodzera cellulose ether zvigadzirwa zvinogona kuvandudza viscosity yedhaka uku uchivimbisa basa repamusoro uye kunyorova kunamatira kwedhaka, izvo zvinoita kuti dhaka rive nekuita zvirinani mukunyorova iyo substrate, kunyangwe ikaiswa kuEPS kana XPS, nezvimwewo. hapana curling uye isiri-wetting phenomenon pane yakakosha base base.