Hanyar shirya polyvinyl butyral

Furoti mai aiki da yawa wanda aka hada shi ta hanyar sinadaran polyvinyl butyral, da kuma tsayayya da hasken ultraviolet, ruwa, mai, da tsufa.

Yana narkewa cikin methanol, ethanol, ketones, halogenated alkanes, aromatic solvents .. Yana da dacewa mai kyau tare da phthalate, benzene sebacate plasticizers, nitrocellulose, phenolic resins, epoxy resins, da dai sauransu. Yana da tsayayyen tsafta, juriya mai sanyi, juriya mai tasiri da juriya ta UV .. Kyakkyawan mannewa zuwa karafa, gilashi, itace, kayan karafa, kayayyakin zaren, da sauransu.

Ana narkar da giya ta Polyvinyl a cikin ruwa, kuma butyraldehyde da mai kara kuzari irin su hydrochloric acid ko sulfuric acid ana kara su a karkashin motsawa, kuma ana yin aikin acetal a 15-50 ° C. Yawanci ana amfani dashi wurin kera gilashi mai laushi, fenti da mannewa. Yawancin nau'ikan kayan aiki, kamar: gilashi, ƙarfe, filastik, itace, fata da sauran kayan suna da ƙaƙƙarfan ƙarfi. PVB tare da cikakken haske. Kyakkyawan tauri. sassauci. Temperatureananan aikin zafin jiki. Yana da kyakkyawar rarrabuwa da ƙimar daidaitawa, haɗakar kaddarorin launuka masu launi.

Polyvinyl butyral, wani nau'ikan giya na polyvinyl (PVA) da butyraldehyde, wani farin foda ne mai kyakkyawan haɗuwa da ƙarfe, gilashi, katako, tukwane, da kayayyakin zaren. A cikin sutura, gilashin gilashi masu aminci da kayan inshora suma suna da fa'idodi da yawa, mafi yawanci shine gilashin gilashin aminci.

A cikin tsarin sandaro na polyvinyl acetal, ana iya amfani da hanyoyi daban-daban. "Hanyar mataki ɗaya" ita ce ƙara dukkan aldehydes a cikin reactor sannan kuma duk hydrochloric acid; "hanyar matakai biyu" shine a kara karamin aldehydes sannan a Sanya duk hydrochloric acid, kuma a karshe sai a kara sauran aldehydes; "hanyar daidaitawa" shine a ƙara dukkan aldehydes da hydrochloric acid a cikin reactor a lokaci guda.


Post lokaci: Oktoba-13-2020