Abstract:PVC modifier nrog cov qauv-plhaub-ACR, qhov kev hloov kho no muaj txiaj ntsig zoo rau kev txhim kho cov yas thiab cuam tshuam lub zog ntawm PVC.
Ntsiab lus:Plasticization, cuam tshuam lub zog, PVC hloov kho
Los ntawm:Wei Xiaodong, Shandong Jinchangshu Tshiab Khoom Siv Technology Co., Ltd., Weifang, Shandong
1 Kev Taw Qhia
Cov khoom siv tshuaj lom neeg yog cov khoom siv tshiab tshiab thib plaub tom qab cov hlau, ntoo thiab cov cement, feem ntau suav nrog cov kav dej yas, cov qhov rooj yas thiab qhov rais, cov ntaub ntawv hauv tsev, cov ntaub ntawv zoo nkauj, thiab lwm yam. Cov khoom siv tseem ceeb yog polyvinyl chloride (PVC).
PVC feem ntau yog siv los ua cov khoom siv thiab nws cov yas profiles yog dav siv nyob rau hauv lub tsev thiab sab nraum zoov qhov rooj thiab lub qhov rais ntawm lub tsev thiab kho kom zoo nkauj kev lag luam, nrog rau cov yam ntxwv zoo heev xws li thaum tshav kub kub preservation, sealing, zog txuag, suab rwb thaiv tsev thiab nruab nrab nqi, thiab lwm yam. kev taw qhia, cov khoom tsim tau sai heev.
Txawm li cas los xij, PVC profiles kuj muaj qee qhov tsis zoo, xws li tsis tshua muaj kub brittleness, tsis tshua muaj kev cuam tshuam lub zog, thiab kev ua haujlwm nyuaj.Yog li ntawd, qhov cuam tshuam cov khoom thiab cov khoom yas ntawm PVC yuav tsum tau txhim kho.Ntxiv cov kev hloov kho rau PVC tuaj yeem txhim kho nws qhov hnyav, tab sis cov kev hloov kho yuav tsum muaj cov khoom nram qab no: qis dua iav hloov kub;ib feem sib xws nrog PVC cob;phim cov viscosity ntawm PVC;tsis muaj kev cuam tshuam tseem ceeb rau qhov pom tseeb thiab cov khoom siv ntawm PVC;zoo huab cua zoo thiab zoo pwm tso tawm expansion.
PVC feem ntau siv cov kev hloov pauv yog chlorinated polyethylene (CPE), polyacrylates (ACR), methyl methacrylate-butadiene-styrene terpolymer (MBS), acrylonitrile-butadiene-styrene copolymer (ABS), ethylene a vinyl acetate copolymerene (EVA), (EPR), thiab lwm yam.
Peb lub tuam txhab tau tsim thiab tsim cov tub ntxhais-plhaub qauv PVC hloov JCS-817.Qhov kev hloov kho no muaj txiaj ntsig zoo rau kev txhim kho cov yas thiab cuam tshuam lub zog ntawm PVC.
2 Pom zoo noj
Tus nqi ntawm kev hloov kho JCS-817 yog 6% rau 100 qhov hnyav ntawm PVC cob.
3 Kev ntsuas kev ua tau zoo sib piv ntawm cov hloov pauv sib txawv thiab qhov hloov pauv no JCS-817
1. Npaj PVC cov khoom siv hauv paus raws li cov qauv hauv Table 1
Table 1
| Lub npe | Qhov chaw los ntawm qhov hnyav |
| 4201 ib | 7 |
| 660 | 2 |
| SIB 218 | 3 |
| AC-6A | 3 |
| Titanium Dioxide | 40 |
| PVC (S-1000) | 1000 |
| Organic Tin Stabilizer | 20 |
| Calcium Carbonate | 50 |
2. Kev sib piv ntawm qhov cuam tshuam lub zog: Sib xyaw cov qauv saum toj no thiab sib xyaw cov khoom sib xyaw nrog 6% ntawm qhov hnyav ntawm PVC nrog cov khoom sib txawv ntawm PVC.
Cov khoom siv kho tshuab tau ntsuas los ntawm ob-cov menyuam qhib zeb, tiaj tus vulcanizer, qauv tsim, thiab lub tshuab ntsuas thoob ntiaj teb thiab cov kab teeb pom kev yooj yim raws li qhia hauv Table 2.
Rooj 2
| Yam khoom | Kev sim | Kev sim tej yam kev mob | Chav tsev | Technical indexes (JCS-817 6phr) | Technical indexes (CPE 6phr) | Technical indexes (Piv txwv ACR 6phr) |
| Kev cuam tshuam (23 ℃) | GB/T 1043 | 1A | KJ/mm2 | 9.6 ib | 8.4 | 9.0 ib |
| Kev cuam tshuam (-20 ℃) | GB/T 1043 | 1A | KJ/mm2 | 3.4 | 3.0 | Tsis muaj |
Los ntawm cov ntaub ntawv hauv Table 2, nws tuaj yeem xaus lus tias qhov cuam tshuam lub zog ntawm JCS-817 hauv PVC zoo dua li ntawm CPE thiab ACR
3. Kev ntsuas kev sib piv ntawm cov khoom siv rheological: Sib xyaw cov qauv saum toj no thiab ntxiv 3% ntawm qhov hnyav ntawm PVC rau qhov sib xyaw nrog cov khoom sib txawv ntawm PVC thiab ces sib tov.
Cov khoom siv plasticizing ntsuas los ntawm Harper rheometer yog qhia hauv Table 3.
Table 3
| Tsis muaj. | Plasticizing lub sij hawm (S) | Qhov sib npaug torque (M [Nm]) | Kev sib hloov ceev (rpm) | Kev ntsuas kub (℃) |
| JCS-817 | 55 | 15.2 | 40 | 185 |
| CPE | 70 | 10.3 | 40 | 185 |
| ACR | 80 | 19.5 Nws | 40 | 185 |
Los ntawm Table 2, lub sij hawm plasticization ntawm JCS-817 hauv PVC yog tsawg dua li ntawm CPE thiab ACR, piv txwv li, JCS-817 yuav ua rau cov txheej txheem qis dua rau PVC.
4 Kev xaus
Qhov cuam tshuam lub zog thiab plasticizing cov khoom ntawm cov khoom no JCS-817 hauv PVC yog zoo dua li CPE thiab ACR tom qab kuaj xyuas.
Post lub sij hawm: Jun-15-2022