Mene ne PVC abu?

PVC kayan su roba polymers, wanda ya kasance a cikin tushe polymer. A cikin rawar da albarkatun kasa da ake amfani a wani adadin chlorine 57%, da kuma man fetur a cikin adadin 43%.

janar description

PVC da dangantaka da roba thermoplastic kayan. Dangane da abin da Polymerization yanayi, maza, su samar da wani samfurin wanda za a iya samun daban-daban da kuma sinadaran jiki halaye. PVC-tushen kayan za a iya plasticized da kuma wadanda ba plasticized. A bayyanar, polyvinyl chloride ne fararen foda cewa shi ne odorless da kuma iyawa. Yana da quite m, yana da kyau kwarai dielectric halaye, kazalika da insoluble a ruwa. PVC kayan su ne resistant zuwa alcohols, alkalis, ma'adinai mai. Su ne narkewa a ether, baya swelled. Kamar yadda kaushi iya yi ketones, aromatic da magni hydrocarbons. The bayyana abu ne resistant zuwa hadawan abu da iskar shaka da kuma wuya flammable. Shi ne resistant, low thermal kwanciyar hankali, da kuma lokacin da hõre zuwa da zazzabi na 100 digiri decomposes farawa emit hydrogen chloride. Domin cimma inganta solubility kuma high zafi juriya, polyvinyl chloride aka magni.

Babban physico-sinadaran da halaye

Kwayoyin nauyi jeri daga 40 000 to 145 000. A kayan autoignited a zazzabi wanda yake daidai da 1100 digiri. Duk da yake cikin flash batu ne 500 digiri. A flash ya auku a 624 digiri. Yawa shi ne a cikin kewayon 1.34 gram da cubic santimita. The girma yawa dabam daga 0.4 zuwa 0.7 grams da cubic santimita. PVC kayan fara decompose a 100-140 digiri. Vitrification ne da za'ayi a 70-80 digiri.

muhalli bayani dalla-dalla

Polyvinyl chloride ne dan kadan mai guba abubuwa da kuma bazuwar kayayyakin zai iya sa hangula daga cikin mutum babba numfashi fili. Tara kura ne a wuta. Idan abu ne mai tsanani fiye da 150 digiri, da wulakanci na polymer fara, tare da ci gaba na hydrogen chloride da carbon monoxide. Wadannan matakai ne cutarwa ga jikin mutum.

PVC kayan za a iya ci gaba da sarrafa a wani matsakaicin yawan zafin jiki, sunã daidaita da 60 digiri. Plasticized jinsunan iya jurewa sanyaya zuwa -60 digiri.

samar Features

Idan kana sha'awar a cikin tambaya na abin da PVC abu, shi wajibi ne don samun matsahi na saba da samar da fasaha. Common gishiri ya bazu a lokacin electrolysis a hydrogen, chlorine da caustic soda. A farko bangaren na pre-narkewa a cikin ruwa, da kuma bazuwar auku a ƙarƙashin rinjayar wutar lantarki. Dabam daga gas ko mai ta da wani tsari da ake kira fatattaka, za'ayi ethylene samar. A mataki na gaba shi ne chlorine fili da kuma acetylene. Ƙarshe da ethylene dichloride an samu wanda, bayan amfani da samar da roba chloride monomer. Shi ne karshen bangaren mukaddashin matsayin tushe memba a yi na PVC. A lokacin Polymerization na roba chloride monomer kwayoyin suna hade, sakamakon haka ne zai yiwu a samu granules. Ya kuma ne albarkatun kasa, da kuma kara wa shi dukan abubuwa, domin a cimma wata fadi da dama halaye na kayan.

Products, Ya sanya daga PVC

Ya sanya daga PVC kayan kowane irin kayayyakin yau ne quite sauki. Don yin wannan, yi amfani da daban-daban fasahar, daga cikinsu akwai da mirgina, gyare-gyaren a karkashin matsin da extrusion. Suspension PVC, misali, amfani ga samar da taushi, wuya da kuma Semi-taushi da kuma plasticized robobi. Emulsion PVC ne dalilin da taushi kayayyakin.

Bigiren amfani

Material PVC-mai rufi, cikakken sanya a kan tushen da PVC, a yau, ta samu da aikace-aikace a magani. A impetus ga taro amfani a cikin wannan yankin da aka bukatar maye gurbin gilashin da kuma roba da haifuwa yarwa kuma reusable. A tsawon lokaci, PVC ya samu fiye da tartsatsi saboda inertia da kuma sinadaran da kwanciyar hankali. Medical kayayyakin sanya daga PVC, za a iya amfani da ko da a cikin jikin mutum, ba su crack sauƙi haifuwa da kuma ba ya zuba.

Polyvinyl chloride aka yadu rarraba a matsayin abu don hawa samar. A wannan yankin, an dauke na biyu ya fi na kowa bayan da polymer propylene. A cikin mota masana'antu da shi da ake amfani da yi na sealing articles, coatings, na USB rufi, hannu ya ginu ne, kayan aiki windows, datsa, da sauransu. Da yawa daga cikin kayan da PVC da sauran halaye da aka jera a sama zai mika da lokaci na rayuwa da mota. Yau, lokacin garanti ne shekaru 17, yayin da har yanzu a cikin seventies na karshe karni, wannan adadi ya ba fiye da shekaru 11.

Aikace-aikace a cikin filin ya kai ga ƙananan man fetur halin kaka. Wannan shi ne saboda gaskiyar cewa polymer weighs kasa, tare da mota ingancin ba rage. Polyvinyl chloride ya inganta abin hawa aminci. Ana amfani da a samar da bangarori, airbags da sauran abubuwa. Material juriya ga wuta, kuma, qara aminci da mota.

Idan ka yi tunani game da abin da yake PVC abu, wajibi ne a san ma cewa ya aka rayayye yi amfani for zane dalilai. Wannan shi ne saboda gaskiyar cewa daga gare shi za mu iya haifar da kayayyakin da wani siffar.

Amfani a yi

Idan muka yi la'akari da duk na polymers, shi ne mafi yadu amfani PVC a yi. Babban halaye da cewa an yaba da art, za a iya bambanta da lalacewa juriya, low nauyi, inji ƙarfi, da juriya ga lalata da kuma sauran matakai, kazalika da thermal illa da kuma yanayin mamaki. PVC za a iya kira mai kyau , mai tsaurin abu, wanda da wuya a ƙone. Wannan shi ne dalilin da ya sa shi za a iya amfani da a kan waɗanda suke abubuwa, waxanda suke da batun musamman bukatun ga wuta aminci.

ƙarshe

Idan ka zabi ka yi amfani da PVC for sirri dalilai, wanda abu ne mafĩfĩci daga gare shi, yana da muhimmanci a shirya kafin saya. Duk da haka, ya kamata a lura da cewa PVC an yadada a fagage daban-daban don wani iri-iri na haƙiƙa dalilai. Mafi yawansu sun aka bayyana a cikin labarin.