Isishwankathelo solwazi lwesicelo sePVC impembelelo modifiers

(1) CPE

I-Chlorinated polyethylene (CPE) yimveliso yomgubo we-chlorination emisiweyo ye-HDPE kwisigaba samanzi. Ngokunyuka kweqondo le-chlorination, i-HDPE yasekuqaleni eyikristale ngokuthe ngcembe iba yi-elastomer e-amorphous. I-CPE esetyenziswa njenge-agent eqinisayo ngokubanzi inomxholo weklorini wama-25-45%. I-CPE inoluhlu olubanzi lwemithombo kunye namaxabiso aphantsi. Ukongeza kwisiphumo sayo sokuqina, ikwanamandla okumelana nokubanda, ukumelana nemozulu, ukumelana nedangatye, kunye nokunganyangeki kwemichiza. Okwangoku, i-CPE yeyona nto iphambili yokuguqula impembelelo e-China, ngakumbi kwimveliso yemibhobho ye-PVC kunye neeprofayili, kwaye uninzi lweefektri zisebenzisa i-CPE. Isixa esongezelelweyo ngokuqhelekileyo si-5-15 izahlulo. I-CPE ingasetyenziselwa kunye nezinye ii-agent eziqinisayo, ezifana ne-rubber kunye ne-EVA, ukufumana iziphumo ezingcono, kodwa izongezo zerabha azikwazi ukumelana nokuguga.

(2) ACR

I-ACR yicopolymer yeemonomers ezifana ne-methyl methacrylate kunye ne-acrylic ester. Sesona silungisi sinempembelelo ephuhliswe kwiminyaka yakutshanje kwaye inokonyusa amandla empembelelo yemathiriyeli ngamashumi aliqela amaxesha. I-ACR yeyemodyuli yempembelelo ye-core-shell structure, equka iqokobhe elenziwe nge-methyl methacrylate ethyl acrylate polymer, kunye ne-elastomer yerabha eyenziwe ngokudibanisa ne-butyl acrylate njengecandelo lekhonkco elingundoqo elisasazwe kumaleko angaphakathi amasuntswana. Ngokukodwa ilungele ukuguqulwa kwempembelelo yeemveliso zeplastiki zePVC ukuze zisetyenziswe ngaphandle, usebenzisa i-ACR njengesilungisi sempembelelo kwi-PVC yocango lweplastiki kunye neeprofayili zefestile zineempawu zokusebenza kakuhle, umphezulu ogudileyo, ukumelana nokuguga okulungileyo, kunye namandla aphezulu ekona ye-welding xa kuthelekiswa nezinye izilungiso. , kodwa ixabiso limalunga nesinye kwisithathu ngaphezulu kweCPE.

(3) MBS

I-MBS yicopolymer yeemonomers ezintathu: i-methyl methacrylate, ibutadiene, kunye ne-styrene. Ipharamitha ye-solubility ye-MBS iphakathi kwe-94 kunye ne-9.5, ekufutshane ne-solubility parameter ye-PVC. Ke ngoko, inokuhambelana kakuhle nePVC. Eyona nto inkulu kukuba emva kokongeza i-PVC, inokwenziwa ibe yimveliso ebonakalayo. Ngokubanzi, ukongeza iinxalenye ze-10-17 kwi-PVC kunokunyusa amandla empembelelo ngamaxesha angama-6-15. Nangona kunjalo, xa isixa se-MBS esongeziweyo sidlula iinxalenye ezingama-30, amandla empembelelo yePVC ayancipha ngokwenene. I-MBS ngokwayo inempembelelo entle yokusebenza, ukungafihli kakuhle, kunye nokudluliselwa kwe-90%. Ngelixa iphucula ukusebenza kwempembelelo, inempembelelo encinci kwezinye iipropathi ze-resin, njengamandla okuqina kunye nobude ngexesha lekhefu. I-MBS iyabiza kwaye isoloko isetyenziselwa ukudibanisa nezinye izilungiso zempembelelo ezifana ne-EAV, i-CPE, i-SBS, njl. Ngokuqhelekileyo ayisetyenziswanga njengenguqu yempembelelo kwimveliso yocango lweplastiki kunye neeprofayili zefestile.

(4) SBS

I-SBS yi-ternary block copolymer ye-styrene, butadiene, kunye ne-styrene, ekwabizwa ngokuba yirabha ye-thermoplastic styrene butadiene. Iyeye-elastomers ze-thermoplastic kwaye isakhiwo sayo sinokwahlulwa zibe ziindidi ezimbini: i-star shaped kunye ne-linear. Umlinganiselo we-styrene kwi-butadiene kwi-SBS ubukhulu becala yi-30/70, 40/60, 28/72, kunye ne-48/52. Isetyenziswa kakhulu njengempembelelo yokuguqula i-HDPE, i-PP, kunye ne-PS, kunye ne-dosage yeengxenye ze-5-15. Umsebenzi ophambili we-SBS kukuphucula ukuchasana kwempembelelo yobushushu obuphantsi. I-SBS inokumelana nemozulu embi kwaye ayifanelekanga kwiimveliso zokusetyenziswa kwangaphandle ixesha elide.

(5) ABS

I-ABS yi-ternary copolymer ye-styrene (40% -50%), i-butadiene (25% -30%), kunye ne-acrylonitrile (25% -30%), isetyenziswa ikakhulu njengeeplastiki zobunjineli kwaye isetyenziselwa ukuguqulwa kwempembelelo ye-PVC, kunye nehle ephantsi. -ifuthe lobushushu lokuguqulwa kweziphumo. Xa isixa se-ABS esidityanisiweyo sifikelela kwiindawo ezingama-50, amandla empembelelo yePVC anokulingana naleyo ye-ABS esulungekileyo. Isixa se-ABS esongeziweyo ngokuqhelekileyo si-5-20 iinxalenye. I-ABS inokumelana nemozulu embi kwaye ayifanelekanga ukusetyenziswa ixesha elide ngaphandle kwiimveliso. Ngokuqhelekileyo ayisetyenziswanga njengenguqu yempembelelo kwimveliso yocango lweplastiki kunye neeprofayili zefestile.

(6) EVA

I-EVA i-copolymer ye-ethylene kunye ne-vinyl acetate, kwaye ukuqaliswa kwe-vinyl acetate kutshintsha i-crystallinity ye-polyethylene. Umxholo we-vinyl acetate uhluke kakhulu, kwaye i-index refractive ye-EVA kunye ne-PVC ihluke, okwenza kube nzima ukufumana iimveliso ezicacileyo. Ke ngoko, i-EVA ihlala isetyenziswa ngokudityaniswa nezinye iirasi ezixhathisayo kwimpembelelo. Isixa se-EVA esongeziweyo singaphantsi kweengxenye ze-10.