Propylene - narkewa zafin jiki, da dũkiyarsu da kuma halaye

Propylene ciwon narkewa batu da ya kamata a sani a gare ku idan kana so ka yi amfani da littattafai na sirri dalilai, suna ba iyakacin duniya roba thermoplastic polymer wanda nasa ne da aji na polyolefins.

domin rikodin

Wani da aka sani propylene a matsayin samfurin da propylene Polymerization. The abu ne fari a launi, kuma yana da mai ɗamfarar jũna. Wannan aka shirya da Polymerization na propylene. Polymerization ne da za'ayi a ƙarƙashin rinjayar matsa lamba na 10 atmospheres, da yawan zafin jiki ne kiyaye a cikin 80 ° C.

Kwayoyin tsarin da kuma narkewa batu

Propylene, da narkewa batu na wanda za a mai suna a kasa, da irin kwayoyin tsarin ne zuwa kashi uku iri:

• atactic.
• syndiotactic.
• isotactic.

Atactic propylene - wani roba-kamar abu wanda yana da wani babban mataki na fluidity. ta narkewa batu ne 80 ° C, yayin da yawa ne 850 kg / m³. Wannan abu ne ma halin da high solubility a diethyl ether.

Ya bambanta a da halaye daga sama-aka bayyana isotactic propylene a cewa yana da wani babban modulus na elasticity, ta yawa kai a 910 g / m³, alhãli kuwa da narkewa batu ne yafi hakan da kuma jeri daga 165 zuwa 170 ° C. Wannan abu ne resistant zuwa sunadarai.

Physico-inji Properties da kuma bayani dalla-dalla

Propylene ciwon narkewa batu da aka ambata a sama, daban-daban daga polyethylene na ƙananan yawa, wanda shi ne 0,91 g / cm³. Wannan darajar ne kowa ga robobi. Aka bayyana more abu da kuma mafi m, aka nuna cewa yana da wani babban jure abrasion.

Daga cikin abubuwan, propylene, zafi-resistant, domin shi zai fara zuwa laushi lokacin da zafin jiki da kai 140 ° C. Da narkewa zafin jiki ne 175 ° C, ya cigaba da, da kayan da aka ma ba fallasa zuwa jaddada lalata fatattaka. The haske resistant propylene kamar yadda oxygen. Gabatarwa stabilizer lowers ji na ƙwarai ko da more.

Propylene ciwon narkewa batu da ka iya zama da sha'awa, idan ka shirya amfani da wannan abu, a lokacin da ya miƙa zai nuna hali daban dangane da zafin jiki da kuma aza aikace-aikace gudun. A kasan kudi na mikewa, da girma da darajar da inji Properties. Tensile watse danniya dabam daga 250 zuwa 400 kgf / cm², alhãli kuwa da elongation a hutu ne daga 200 zuwa 800%.

Da narkewa batu na propylene takardar, wadda aka ambata a sama, ba shine kawai halayyar wanda sha'awar zaman masu amfani. Suna wani lokacin da abin ya shafa fiye da flexural modulus. A halin yanzu harka shi iya bambanta daga 6700 zuwa 11900 kgf. Lokacin da amfanin ƙasa batu elongation ne daidai da 10-20%. Impact ƙarfi da daraja ne 33-80 kgf cm / cm². Brinell taurin ne 6-6.5 kg / mm².

fanni na aikace-aikace

A amfani da propylene ne yadu. A kayan amfani da su yi fina-finai a nan sun hada da marufi iri. Daga cikin sauran kayayyakin shi wajibi ne don ware:

• bags.
• bututu.
• roba kofuna.
• marufi.
• cikakken bayani game da fasaha da kayan aiki;
• kayan gida.
• insulating abu.
• ba-saka masana'anta.

A yi na propylene kuma samu ta hanyar, akwai shi da ake amfani da vibration da kuma amo kadaici benaye, kazalika a tsarin da ake magance kan fasahar "iyo kasa". Lokacin da propylene aka copolymerized da ethylene, wadanda ba crystallizable copolymer za a iya samu. Yana iya nuna roba halaye, wanda yana da juriya ga tsufa, kuma yana da babban sunadarai juriya.

Domin zafin rana da kuma vibration ne yadu amfani kumbura propylene. Da narkewa zafin jiki na propylene takardar da aka ambata a sama, duk da haka, wannan ba kawai halayyar cewa ya kamata ka zama sha'awar kafin sayen kayayyakin daga wannan abu. Ya kamata kuma a san cewa kumbura propylene suna kama a kaddarorin da polyethylene kumfa. Amma EPS za a iya maye gurbinsu da wani ado profile extrusion na fadada propylene. Domin caulking, hanya coatings, yi adhesives, mastics kuma m fina-finan da ake yawan amfani atactic propylene. Bigiren propylene a Rasha ya kamar haka:

• 38% - kwantena.
• 30% - thread.
• 18% - film.
• 6% - bututu.
• 5% - propylene zanen gado;
• 3% - Other.

Da narkewa batu na propylene bututu

Da narkewa batu na propylene bututu - shi ne daya daga cikin wadanda halaye, wanda shi ne mafi sau da yawa sha'awar a cikin zamani mabukaci. Wannan abu ya fara yi laushi zuwa 140 ° C yayin da narke - 175 ° C. A karshe wani zaɓi - shi ne da yawan zafin jiki na superheated tururi. Idan muka yi la'akari da wannan lambar, da propylene za a iya amfani da wani ruwa tsarin da wanda ruwa da aka hawa da siddan high zazzabi.

Amma abubuwa ba haka ba ne mai sauki a cikin wannan al'amari. A ductility abubuwa a matsayin wani ƙarin alama daga cikin kayan. Propylene a hutu yana da wani elongation wanda dabam a cikin kewayon 200 zuwa 800%. Wannan ya nuna cewa idan da bututu za a shafa a wasu nauyi, to, da samfurin za a mika cikin dogon tube, sa'an nan terminates.

A ƙarshe: yanayin propylene

Da kaddarorin propylene, da halaye da kuma yanayi na wannan abu zai ba ka damar gane abin da yanki ne mafi kyau don amfani da shi. Isotactic propylene yanzu daukarsa a matsayin mafi mashahuri a cikin masana'antar. Wannan shi ne saboda da fasali na iri-iri na kayan, musamman halin da ake ciki inda gefen kungiyoyi ne CH3, located sabon abu game da babban sarkar. Irin wannan Sphere ayyana asali halaye ya kamata a kasaftawa daga gare su: da ikon riƙe da siffar a high yanayin zafi, taurin kuma high ƙarfi.