ABS
Ayyukan ABS
ABS ya ƙunshi monomers guda uku acrylonitrile, butadiene da styrene. Daga ra'ayi na ilimin halittar jiki, ABS wani abu ne wanda ba na crystalline ba, tare da ƙarfin injiniya mai girma da kuma kyakkyawan aikin "ƙarfi, m, karfe". Yana da wani amorphous polymer, ABS ne janar injiniya filastik, iri-iri, m amfani, kuma aka sani da "General filastik", ABS ne mai sauki sha danshi, musamman nauyi ne 1.05g / cm3 (dan kadan nauyi fiye da ruwa), low shrinkage. ƙimar (0.60%), girman barga, sarrafa gyare-gyare mai sauƙi.
Siffofin ABS sun dogara ne akan rabon monomers uku da tsarin kwayoyin halitta na matakai biyu. Wannan yana ba da damar babban sassauci a cikin ƙirar samfuri, don haka yana samar da ɗaruruwan nau'ikan kayan ABS masu inganci a kasuwa. Wadannan nau'ikan kayan inganci daban-daban suna ba da halaye daban-daban, kamar matsakaici zuwa tsayin daka mai ƙarfi, ƙarancin ƙarancin ƙarewa da halayen murdiya mai zafi. Abun ABS yana da ingantacciyar machinability, halayen bayyanar, ƙarancin raɗaɗi, kyakkyawan kwanciyar hankali mai girma da ƙarfin tasiri.
ABS mai haske ne mai launin rawaya mai launin rawaya ko guduro mai haske, mara guba, maras ɗanɗano, ƙarancin shayar ruwa, yana da kyawawan kaddarorin jiki da na injiniya, kamar ingantattun kaddarorin lantarki, juriya, kwanciyar hankali, juriya sinadarai da sheki, da sauƙin aiwatarwa. da form. Rashin lahani shine juriya na yanayi, juriya na zafi mara kyau, kuma mai ƙonewa.
Halayen tsari na ABS
ABS yana da high hygroscopiness da zafi ji na ƙwarai. Dole ne a bushe gaba daya da kuma preheated kafin kafawa da sarrafawa (bushewa a 80 ~ 90C don akalla 2 hours), kuma ana sarrafa danshi a ƙasa 0.03%.
Narke danko na guduro ABS ba shi da damuwa ga zafin jiki (bambanta da sauran resin amorphous). Kodayake zafin allura na ABS ya ɗan fi na PS, ba zai iya samun kewayon zafi mai faɗi kamar PS ba. Ba za a iya rage dankowar ABS ta dumama makaho ba. Ana iya inganta yawan ruwa na ABS ta hanyar ƙara saurin dunƙule ko matsa lamba na allura. Babban aiki zafin jiki a 190-235 ℃ ya dace.
Dankin narkewar ABS yana da matsakaici, sama da na PS, HIPS da AS, kuma ana buƙatar matsa lamba mafi girma (500-1000 mashaya).
Abun ABS tare da matsakaici da babban saurin allura yana da sakamako mafi kyau. (sai dai idan siffar ta kasance mai rikitarwa kuma sassan bango na bakin ciki suna buƙatar ƙimar allura mafi girma), samfurin yana da sauƙi don samar da layin gas a baki.
ABS gyare-gyaren zafin jiki ne high, ta mold zafin jiki ne kullum gyara a 25-70 ℃. A lokacin da samar da ya fi girma kayayyakin, da tsayayyen mold (gaba mold) zafin jiki ne kullum dan kadan mafi girma fiye da motsi mold (baya mold) game da 5 ℃ ya dace. (Mold zafin jiki zai shafi ƙare na filastik sassa, ƙananan zafin jiki zai haifar da ƙananan ƙare)
ABS bai kamata ya kasance a cikin ganga mai zafi ba na dogon lokaci (kasa da minti 30), in ba haka ba yana da sauƙi don lalata da rawaya.
Yawan aikace-aikace na yau da kullun
Motoci (bankunan kayan aiki, ƙofofin ƙyanƙyashe kayan aiki, murfin dabaran, akwatunan nuni, da sauransu), firiji, kayan aiki masu ƙarfi (masu bushewar gashi, masu haɗawa, masu sarrafa abinci, masu yankan lawn, da sauransu), faifan tarho, maɓallin rubutu, abubuwan hawa na nishaɗi irin su. a matsayin motocin golf da sleges na jet da sauransu.
PMMA
Ayyukan PMMA
PMMA shine polymer amorphous, wanda aka fi sani da plexiglass. Madalla da nuna gaskiya, mai kyau zafi juriya (thermal nakasawa zafin jiki na 98 ℃), tare da kyau tasiri juriya halaye, da kayayyakin na matsakaici inji ƙarfi, low surface taurin, sauki da za a scratched da wuya abubuwa da barin burbushi, idan aka kwatanta da PS, ba sauki to. crack, takamaiman nauyi na 1.18g/cm3. PMMA yana da kyawawan kaddarorin gani da juriya na yanayi. Shigar da farin haske ya kai 92%. Samfuran PMMA suna da ƙarancin birefringence, musamman dacewa don samar da fayafai na bidiyo. PMMA yana da halaye masu rarrafe yanayin zafi. Tare da haɓakar kaya da lokaci, ana iya haifar da fashewar damuwa.
Halayen tsari na ABS
PMMA aiki bukatun sun fi m, yana da matukar kula da ruwa da zafin jiki, kafin aiki zuwa cikakken bushe (shawarar bushewa yanayi na 90 ℃, 2 zuwa 4 hours), ta narke danko ne ya fi girma, bukatar da za a kafa a high (225). -245 ℃) da kuma matsa lamba, mutu zafin jiki a 65-80 ℃ ne mafi alhẽri. PMMA ba ta da ƙarfi sosai, kuma za a iya lalacewa ta hanyar babban zafin jiki ko tsawan zama a babban zafin jiki. Gudun dunƙule bai kamata ya zama babba ba (60% ko makamancin haka), sassan PMMA mai kauri suna da sauƙin bayyana "kogo", suna buƙatar ɗaukar babban ƙofa, "ƙananan zafin jiki na kayan abu, zazzabi mai girma, saurin jinkirin" hanyar allura don aiwatarwa.
Yawan aikace-aikace na yau da kullun
Masana'antar kera motoci (na'urar fitilar sigina, kayan aikin kayan aiki da sauransu), masana'antar magunguna (kwangon ajiyar jini da sauransu), aikace-aikacen masana'antu (faifan bidiyo, mai watsa haske), kayan masarufi (kofuna na sha, kayan rubutu da sauransu).
Lokacin aikawa: 23-11-22