(1) CPE
Chlorinated polyethylene (CPE) chigadzirwa cheupfu cheHDPE yakasungirirwa chlorination mumvura. Nekuwedzera kwehuwandu hwechlorination, iyo yekutanga HDPE inopenya zvishoma nezvishoma inova amorphous elastomer. CPE inoshandiswa semushonga wekuomesa inowanzova nehuwandu hwechlorine hwe25-45%. CPE ine mhando dzakasiyana dzezvinhu uye mitengo yakaderera. Pamusoro pesimba rayo rekuomesa, inewo simba rekuomesa, simba rekuomesa, simba rekudzima mamiriro ekunze, simba rekudzima moto, uye simba rekudzima makemikari. Parizvino, CPE ndiyo inonyanya kushandisa simba muChina, kunyanya mukugadzirwa kwemapombi ePVC nemaprofiles, uye mafekitori mazhinji anoshandisa CPE. Huwandu hwekuwedzera hunowanzova zvikamu 5-15. CPE inogona kushandiswa pamwe chete nezvimwe zvinhu zvekuomesa, zvakaita serabha neEVA, kuti uwane mhedzisiro iri nani, asi zvinowedzerwa zverabha hazvigoni kukwegura.
(2) ACR
ACR imhando ye copolymer yema monomers akadai se methyl methacrylate uye acrylic ester. Ndiyo nzira yakanakisisa yekugadzirisa impact modifier yakagadzirwa mumakore achangopfuura uye inogona kuwedzera simba re impact rezvinhu kanoverengeka. ACR ndeye impact modifier ye core-shell structure, ine ganda rakagadzirwa ne methyl methacrylate ethyl acrylate polymer, uye rabha elastomer yakagadzirwa ne crosslinking ne butyl acrylate se core chain segment inogoverwa mukati memukati me particles. Yakakodzera zvakanyanya kugadziriswa kwe impact ye PVC plastic products kuti ishandiswe panze, kushandisa ACR se impact modifier mu PVC plastic door and window profiles ine hunhu hwekushanda zvakanaka, smooth surface, good resistance, uye high welding corner strength zvichienzaniswa nedzimwe modifiers, asi mutengo wacho wakakwira nechikamu chimwe muzvitatu kupfuura CPE.
(3) MBS
MBS imhando ye copolymer ine ma monomers matatu: methyl methacrylate, butadiene, uye styrene. Paramita yekunyungudika yeMBS iri pakati pe94 ne9.5, iyo iri pedyo neparamita yekunyungudika yePVC. Saka, inoenderana zvakanaka nePVC. Chinhu chikuru chayo ndechekuti mushure mekuwedzera PVC, inogona kugadzirwa kuita chigadzirwa chakajeka. Kazhinji, kuwedzera zvikamu 10-17 kuPVC kunogona kuwedzera simba rayo rekunyungudika nekatanhatu kusvika gumi neshanu. Zvisinei, kana huwandu hweMBS hwakawedzerwa hukadarika zvikamu makumi matatu, simba rekunyungudika rePVC rinoderera. MBS pachayo ine simba rakanaka rekunyungudika, kujeka kwakanaka, uye kutumirwa kweanopfuura 90%. Kunyange zvazvo ichivandudza mashandiro ekunyungudika, haina simba guru pane zvimwe zvinhu zve resin, zvakaita sekusimba kwekukwenya uye kureba panguva yekuputsika. MBS inodhura uye inowanzo shandiswa pamwe chete nezvimwe zvinogadzirisa kunyungudika zvakaita seEAV, CPE, SBS, nezvimwewo. MBS haina simba rekudzivirira kupisa uye kuramba mamiriro ekunze, zvichiita kuti isakodzere kushandiswa panze kwenguva refu. Kazhinji haishandiswi senzira yekugadzirisa maburi mukugadzira mapurofayiro emasuo nemahwindo epurasitiki.
(4) SBS
SBS imhando ye ternary block copolymer ye styrene, butadiene, uye styrene, inozivikanwawo se thermoplastic styrene butadiene rabha. Ndeye thermoplastic elastomers uye chimiro chayo chinogona kukamurwa kuita mhando mbiri: nyeredzi yakaita seruvara uye yakatsetseka. Chiyero che styrene ne butadiene muSBS chinonyanya kuva 30/70, 40/60, 28/72, uye 48/52. Inonyanya kushandiswa semugadziri we impact ye HDPE, PP, uye PS, ine dosage yezvikamu 5-15. Basa guru reSBS nderekuvandudza impact resistance yayo pakupisa kwakaderera. SBS haina impact yemamiriro ekunze uye haina kukodzera zvigadzirwa zvekushandisa panze kwenguva refu.
(5) ABS
ABS imhando ye ternary copolymer ye styrene (40% -50%), butadiene (25% -30%), uye acrylonitrile (25% -30%), inonyanya kushandiswa semapurasitiki einjiniya uye inoshandiswawo pakugadzirisa PVC impact, ine mhedzisiro yakanaka yekuchinja impact pakupisa kwakaderera. Kana huwandu hweABS hwawedzerwa hwasvika zvikamu makumi mashanu, simba reimpact rePVC rinogona kuenzana neABS yakachena. Huwandu hweABS hwakawedzerwa hunowanzova zvikamu zvishanu kusvika makumi maviri. ABS haina kusimba kwemamiriro ekunze uye haina kukodzera kushandiswa kwenguva refu panze muzvigadzirwa. Kazhinji haishandiswi se impact modifier mukugadzira mapurasitiki emasuo nemahwindo profiles.
(6) Eva
EVA imhando ye ethylene ne vinyl acetate, uye kuiswa kwe vinyl acetate kunochinja kristallinity ye polyethylene. Zviri mukati me vinyl acetate zvakasiyana zvakanyanya, uye refractive index ye EVA ne PVC yakasiyana, zvichiita kuti zviome kuwana zvigadzirwa zvinoonekera. Saka, EVA inowanzo shandiswa pamwe chete nemamwe ma resin anodzivirira kukuvadzwa. Huwandu hweEVA hwakawedzerwa husingasviki zvikamu gumi.
Nguva yekutumira: Kurume-15-2024
