Pfupiso yeruzivo rwekushandisa yePVC maitiro ekugadzirisa

(1) CPE

Chlorinated polyethylene (CPE) chigadzirwa chehupfu cheyakamiswa chlorination yeHDPE muchikamu chemvura. Nekuwedzera kwe chlorination degree, iyo yekutanga crystalline HDPE zvishoma nezvishoma inova amorphous elastomer. CPE inoshandiswa sechinhu chinoomesa musoro kazhinji ine chlorine yemukati ye25-45%. CPE ine huwandu hwakawanda hwezvinyorwa uye mitengo yakaderera. Pamusoro pekuita kwayo kuomesera, zvakare ine kutonhora kwekudzivirira, kusamira kwemamiriro ekunze, murazvo wemoto, uye kusagadzikana kwemakemikari. Parizvino, CPE ndiyo ine simba rekugadzirisa shanduko muChina, kunyanya mukugadzirwa kwePVC pombi nemaprofile, uye mafekitori mazhinji anoshandisa CPE. Mari yekuwedzera inowanzoita 5-15 zvikamu. CPE inogona kushandiswa pamwe chete nemamwe maajenti anoomesera, akadai serabha uye EVA, kuti awane mhedzisiro iri nani, asi ekuwedzera erabha haamiri kuchembera.

(2) ACR

ACR icopolymer yemamonomers akadai semethyl methacrylate uye acrylic ester. Ndiyo yakanakisa gadziriso inogadziridza yakagadziriswa mumakore achangopfuura uye inogona kuwedzera simba rekukanganisa kwezvinhu nemakumi akati wandei enguva. ACR ndeyemugadziriso weiyo core-shell chimiro, ine goko rinoumbwa nemethyl methacrylate ethyl acrylate polymer, uye rabha elastomer rakaumbwa nekuchinjika nebutyl acrylate sechikamu chepakati chetani chakagoverwa mukati memukati mezvikamu. Kunyanya yakakodzera kugadziridzwa kwePVC zvigadzirwa zvepurasitiki zvekushandisa kunze, uchishandisa ACR sechinhu chinogadzirisa muPVC plastiki gonhi nemahwindo profiles ine hunhu hwekuita kwakanaka kwekugadzirisa, nzvimbo yakatsetseka, kuramba kuchembera kwakanaka, uye kusimba kwekona kwekona yepamusoro zvichienzaniswa nemamwe madhizari. , asi mutengo unenge chikamu chimwe muzvitatu chakakwira kupfuura CPE.

(3) MBS

MBS icopolymer yemamonomers matatu: methyl methacrylate, butadiene, uye styrene. Iyo solubility parameter yeMBS iri pakati pe94 ne9.5, iri padyo neiyo solubility parameter yePVC. Naizvozvo, ine kugarisana kwakanaka nePVC. Chinhu chayo chikuru ndechekuti mushure mekuwedzera PVC, inogona kugadzirwa kuti ive chigadzirwa chakajeka. Kazhinji, kuwedzera 10-17 zvikamu kuPVC kunogona kuwedzera simba rayo rekuita ne6-15 nguva. Nekudaro, kana huwandu hweMBS hwakawedzerwa hunopfuura zvikamu makumi matatu, simba rekuita rePVC rinodzikira. MBS pachayo ine maitiro akanaka ekuita, kujeka kwakanaka, uye kutapurirana kweinopfuura 90%. Ichiri kuvandudza mashandiro ekuita, haina mhedzisiro pane zvimwe zvimiro zveresin, senge simba rekusimba uye kureba panguva yekuzorora. MBS inodhura uye inowanzoshandiswa pamwe chete nezvimwe zvinogadzirisa zvinogadzirisa zvakadai seEAV, CPE, SBS, etc. MBS ine urombo hwekupisa kupisa uye kusagadzikana kwemamiriro ekunze, zvichiita kuti isakodzere kushandiswa kwenguva refu kunze. Iyo haiwanzo shandiswa senge inogadzirisa inogadzirisa mukugadzira epurasitiki gonhi uye hwindo profiles.

(4) SBS

SBS ndeye ternary block copolymer ye styrene, butadiene, uye styrene, inozivikanwawo se thermoplastic styrene butadiene rubber. Iyo ndeye thermoplastic elastomers uye chimiro chayo chinogona kukamurwa kuva marudzi maviri: nyeredzi yakaumbwa uye mutsara. Reshiyo ye styrene kune butadiene muSBS inonyanya 30/70, 40/60, 28/72, uye 48/52. Inonyanya kushandiswa seyakagadziridza shanduko yeHDPE, PP, uye PS, ine dosage ye5-15 zvikamu. Basa guru reSBS nderekuvandudza kudzika-tembiricha kupikisa. SBS ine kusamira zvakanaka kwemamiriro ekunze uye haina kukodzera kune zvenguva refu zvekushandisa kunze zvigadzirwa.

(5) ABS

ABS is a ternary copolymer ye styrene (40% -50%), butadiene (25% -30%), uye acrylonitrile (25% -30%), inonyanya kushandiswa seinjiniya mapurasitiki uye inoshandiswawo kuPVC kukanganisa kwekugadzirisa, ine yakanaka yakaderera. -temperature inokanganisa shanduko mhedzisiro. Kana huwandu hweABS hwawedzerwa hunosvika makumi mashanu, simba rePVC rinogona kuenzana neiyo yakachena ABS. Huwandu hweABS hwakawedzerwa kazhinji 5-20 zvikamu. ABS ine kusagadzikana kwemamiriro ekunze uye haina kukodzera kushandiswa kwenguva refu kunze muzvigadzirwa. Iyo haiwanzo shandiswa senge inogadzirisa inogadzirisa mukugadzira epurasitiki gonhi uye hwindo profiles.

(6) EVA

EVA icopolymer ye ethylene uye vinyl acetate, uye kuiswa kwevinyl acetate kunoshandura crystallinity ye polyethylene. Zviri mukati mevinyl acetate zvakasiyana zvakanyanya, uye iyo refractive index yeEVA nePVC yakasiyana, zvichiita kuti zviome kuwana zvigadzirwa zvakajeka. Naizvozvo, EVA inowanzoshandiswa pamwe chete nemamwe maresheni anopikisa. Huwandu hweEVA hwakawedzerwa huri pasi pezvikamu gumi.