1. Matrix khoom: PVC cob
Cov no yog cov ntsiab lus tseem ceeb ntawm cov khoom siv yeeb nkab thiab ua rau feem ntau ntawm cov formulation. Nyob ntawm qhov xav tau hardness thiab npaj siv cov yeeb nkab, ob hom hauv qab no feem ntau xaiv:
| Resin Hom | Cov yam ntxwv tseem ceeb | Tej kev siv |
| Polyvinyl chloride (PVC) cob | Cov khoom siv hauv paus feem ntau yog cov hmoov dawb. Pure PVC yog nkig thiab yuav tsum tau ntxiv cov additives kom siv tau. | Yuav luag txhua hom PVC kav. |
| Chlorinated polyvinyl chloride (CPVC) cob | Nws yog chlorinated hloov kho ntawm PVC, muab superior tshav kub thiab corrosion kuj. | Cov kav dej kub, muaj corrosion-cov kav dej, thiab lwm yam. |
2. Cov khoom siv ntxiv
Txawm hais tias cov additives no tau siv me me, lawv ncaj qha txiav txim siab seb cov kav dej puas tuaj yeem ua tau zoo thiab cuam tshuam cov yam ntxwv ntawm cov khoom kawg. Zoo li "seasonings," lawv muab cov kav dej PVC lawv qhov txawv "cov yam ntxwv":
| Qeb Additive | Lub luag haujlwm tseem ceeb | Ntau yam / Sau ntawv |
|
稳定剂 |
Qhov tseem ceeb tshaj plaws additive. Tiv thaiv PVC los ntawm decomposing thiab discoloring thaum lub sij hawm siab -kub ua. | Cov kua ntsev ua kom sib xyaw ua ke (siv hauv cov kav dej nruj; tus nqi- siv tau), calcium-zinc stabilizers (ib puag ncig tus phooj ywg thiab tsis yog- tshuaj lom; siv hauv dej thiab kho mob- qib kav), organic tin compounds, thiab lwm yam. |
| roj nplua nyeem | Txo kev sib txhuam ntawm cov khoom siv thiab cov khoom siv, tiv thaiv kev sib tsoo, thiab ua kom lub ntsej muag ntawm cov yeeb nkab smoother | Cov no tau muab faib ua cov roj nplua nyeem sab nraud (xws li paraffin) thiab cov roj nplua nyeem sab hauv (xws li stearic acid), thiab yuav tsum tau siv kom sib npaug. |
| Hloov kho | Txhim kho qhov toughness, cuam tshuam tsis kam, lossis kev ua tiav ntawm PVC los daws nws cov brittleness | Feem ntau siv chlorinated polyethylene (CPE) lossis acrylate copolymer (ACR) |
| Filler | Txo cov nqi thiab txhim kho lub rigidity thiab seem stability ntawm lub raj | Feem ntau yog calcium carbonate. Nws yuav tsum tau siv nyob rau hauv nruab nrab, raws li ntau npaum li cas yuav txo tau lub zog ntawm cov yeeb nkab. |
| Xim xim | Cov kav dej muaj xim kom paub qhov txawv ntawm lawv qhov kev siv (xws li, dawb lossis liab rau cov kav dej hluav taws xob). | Feem ntau titanium dioxide muab cov raj ua kom pom dawb |
3 "Kev sib xyaw ua ke" nrog cov khoom tshwj xeeb
Foamed PVC Pipes: By adding foaming agents to the formulation, low-density pipes with a foamed core that provide excellent thermal insulation and soundproofing can be produced; cov no feem ntau siv rau cov dej ntws.
Los tiv thaiv- zoo li qub thiab nplaim taws- Cov kav dej retardant: Siv nyob rau hauv ib puag ncig tshwj xeeb xws li cov mines thee, cov no yuav tsum tau ntxiv cov tshuaj tiv thaiv zoo li qub thiab cov nplaim hluav taws.
Cov kav dej PVC yooj yooj yim: Los ntawm kev ntxiv ntau cov yas yas, PVC tawv tuaj yeem ua tau zoo li cov roj hmab, ua rau nws tsim nyog rau kev tsim cov raj xa dej lossis cov hoses.
Composite Pipes: Los ntawm kev sib txuas PVC nrog lwm cov ntaub ntawv (xws li engineering plastics lossis fibers) lossis los ntawm kev hloov kho (xws li PVC / SBS), cov kav dej sib xyaw nrog kev ua tau zoo tuaj yeem tsim tau.