PP polypropylene
Yawan aikace-aikace na yau da kullun:
Masana'antar kera motoci (yafi amfani da PP wanda ke ɗauke da ƙarin ƙarfe: laka, bututun iska, magoya baya, da sauransu), na'urori (masu sharar gida, bututun na'urar bushewa, firam ɗin injin wanki da murfi, ƙofofin firiji, da sauransu), Japan Yi amfani da kayan masarufi ( lawn da kayan lambu irin su
Masu yankan lawn da sprinklers, da sauransu).
Yanayin tsarin allura mold:
Maganin bushewa: Idan an adana shi da kyau, ba a buƙatar maganin bushewa.
Narke zafin jiki: 220 ~ 275 ℃, yi hankali kada ku wuce 275 ℃.
Mold zafin jiki: 40 ~ 80 ℃, 50 ℃ bada shawarar.Matsayin crystallization an ƙaddara shi ne ta wurin zafin jiki na mold.
Matsin allura: har zuwa 1800bar.
Gudun allura: Gabaɗaya, yin amfani da allura mai sauri na iya rage matsi na ciki zuwa ƙarami.Idan akwai lahani a saman samfurin, yakamata a yi amfani da allurar ƙananan sauri a mafi girman zafin jiki.
Masu gudu da ƙofofi: Ga masu gudu masu sanyi, matsakaicin matsakaicin matsakaicin mai gudu shine 4 ~ 7mm.Ana ba da shawarar yin amfani da tashar allurar madauwari da mai gudu.Ana iya amfani da duk nau'ikan ƙofofin.Matsakaicin diamita na ƙofar kofa yana daga 1 zuwa 1.5mm, amma ana iya amfani da ƙofofin ƙanana kamar 0.7mm.Don ƙofofin gefen, ƙananan zurfin ƙofar ya kamata ya zama rabin kauri na bango;mafi ƙarancin faɗin ƙofar ya kamata ya zama aƙalla kaurin bango sau biyu.Kayan PP na iya amfani da tsarin mai gudu mai zafi.
Sinadarai da kaddarorin jiki:
PP abu ne na Semi-crystalline.Yana da wuya fiye da PE kuma yana da matsayi mafi girma.Tun da homopolymer PP yana da rauni sosai lokacin da zafin jiki ya fi 0 ° C, yawancin kayan kasuwanci na PP sune copolymers na bazuwar tare da 1 zuwa 4% ethylene ko manne copolymers tare da babban abun ciki na ethylene.Copolymer PP abu yana da ƙananan zafin jiki na zafin jiki (100 ° C), ƙananan haske, ƙananan sheki, ƙananan rigidity, amma yana da ƙarfin tasiri.Ƙarfin PP yana ƙaruwa tare da karuwar abun ciki na ethylene.Zazzabi mai laushi na Vicat na PP shine 150 ° C.Saboda high crystallinity, da surface rigidity da karce juriya na wannan abu ne mai kyau sosai.PP ba shi da matsala na damuwa na muhalli.Yawancin lokaci, ana canza PP ta hanyar ƙara fiber gilashi, abubuwan ƙarfe ko roba thermoplastic.Matsakaicin adadin MFR na PP ya fito daga 1 zuwa 40. Kayan PP tare da ƙananan MFR suna da tasiri mafi tasiri amma ƙananan ƙarfin haɓakawa.Don kayan da ke da MFR iri ɗaya, ƙarfin nau'in copolymer ya fi na nau'in homopolymer.Saboda crystallization, da shrinkage kudi na PP ne quite high, kullum 1.8 ~ 2.5%.Kuma daidaituwar shugabanci na shrinkage ya fi na PE-HD da sauran kayan.Ƙara 30% na abubuwan ƙara gilashin na iya rage raguwa zuwa 0.7%.Duk kayan aikin homopolymer da copolymer PP suna da kyakkyawan shayar danshi, juriya na lalata acid da alkali, da juriya mai narkewa.Duk da haka, ba shi da juriya ga ƙamshi na hydrocarbons (irin su benzene), chlorinated hydrocarbons (carbon tetrachloride) kaushi, da dai sauransu. PP ba shi da oxidation juriya a high yanayin zafi kamar PE.

Mucokali na filastik, filastik gwajin bututu, masu shakar hancida sauran samfuran da ke haɗuwa da jikin ɗan adam suna amfani da kayan PP.Muna da kayan aikin likita da kayan abinci na PP.Domin kayan PP ba su da guba.