Ta hanyar shigar da copolymerization na monomer cikin babban sarkar vinyl chloride, ana samun sabon polymer mai ɗauke da mahaɗin monomer guda biyu, wanda ake kira copolymer.Babban nau'ikan da kaddarorin copolymers na vinyl chloride da sauran monomers sune kamar haka:
(1) vinyl chloride vinyl acetate copolymer: gabatarwar vinyl acetate monomer na iya taka rawa na janar plasticizer, wato, abin da ake kira "plastiation na ciki", wanda zai iya kauce wa evaporation, ƙaura, hakar da sauran shortcomings na general plasticizers. , da kuma iya rage narkewa danko, rage aiki zafin jiki da kuma inganta aiki yi.Gabaɗaya, abun ciki na vinyl acetate a cikin copolymer shine 3 ~ 14%.
Babban rashin amfani na vinyl chloride vinyl acetate copolymer shine raguwar ƙarfin ƙarfi, yanayin yanayin zafi, juriya na lalacewa, kwanciyar hankali na sinadarai da kwanciyar hankali na thermal.
⑵ vinyl chloride vinylidene chloride copolymer: da plasticization, softening zafin jiki, solubility da intramolecular plasticization na wannan copolymer ne m guda da na vinyl chloride vinyl acetate copolymer.Ana nuna shi da ƙarancin ruwa da iskar gas, babban solubility a cikin ketone kaushi, da juriya ga dilution na aromatics, don haka za a iya amfani da yadda ya kamata a cikin coatings.Bugu da ƙari, ana amfani da ita don yin fina-finai masu raguwa.Saboda rashin juriya na zafi da kwanciyar hankali idan aka kwatanta da vinyl chloride vinyl acetate copolymer, da kuma babban farashin monomer, ba a amfani da shi sosai azaman vinyl chloride vinyl acetate.
(3) vinyl chloride acrylate copolymer: tasirin filastik na ciki na wannan copolymer yayi daidai da na vinyl chloride vinyl acetate, tare da kwanciyar hankali na thermal.Ana iya amfani dashi don kera samfura masu wuya da taushi, da haɓaka haɓaka aiki, juriya mai tasiri da juriya sanyi.Hakanan za'a iya amfani dashi don sutura, haɗin gwiwa, da sauransu.
(4) vinyl chloride maleate copolymer: abun ciki na maleate a cikin wannan copolymer shine kusan 15%, kuma tasirin filastik na ciki yayi kama da na vinyl chloride acrylate.Yana da kyau aiwatarwa.Rage kaddarorin na zahiri da na injiniya kaɗan ne, kuma juriya na zafi ya fi na manyan copolymers.
(5) vinyl chloride olefin copolymer: copolymerization na ethylene, propylene da sauran olefin monomers na iya samar da resins na copolymer tare da ingantaccen ruwa mai kyau, kwanciyar hankali na thermal, juriya mai tasiri, nuna gaskiya, juriya mai zafi da sauransu.
Nadawa hadawa bayani gyara
Nadawa graft mai amsawa polymerization
Gyara ta hanyar gabatar da wasu monomers a cikin sassan gefe na PVC ko sarkar vinyl chloride cikin sashin gefe na polymers iri-iri ana kiransa polymerization mai amsawa.
4. Low zafin jiki polymerization
Canza tsarin hanyoyin haɗin yanar gizo a cikin babban sarkar PVC ko canza tsari tsakanin sarƙoƙi na PVC yana nufin canza hanyar polymerization.Ana kiran wannan gyare-gyaren polymerization ƙananan zafin jiki.
Lokacin aikawa: Yuli-15-2022