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polyvinyl cawv (pva) -wanwei
piav qhia
saib tag
Anhui Wanwei High-Tech Materials Co., Ltd. tsim "wanwei" hom polyvinyl cawv (pva) series cov khoom siv los ntawm kev siv cov thev naus laus zis thiab thev naus laus zis, ib qho yog vinyl acetate uas tsim los ntawm calcium carbide acetylene txoj kev thiab roj av ethylene txoj kev ua raw khoom, lwm yam yog ethylene tsim los ntawm biological cawv li raw khoom, methanol. raws li hnyav, peroxide ua tus pib, los ntawm polymerization, alcoholysis thiab lwm yam txheej txheem.
cov khoom paub meej
Lub npe tshuaj: polyvinyl cawv (pva)
Cov mis mos molecular: -[ch2ch(oh)]n
lub cev muaj zog:
Cov tsos mob yog dawb flake, granular los yog powdery khoom (tsawg alkali alcoholysis txheej txheem) los yog dawb flocculent khoom (high alkali alcoholysis txheej txheem). Lub ntiajteb txawj nqus: 1.19-1.31 g / cm33, flake pva filling tshwj xeeb lub ntiajteb txawj nqus: 0.42-0.52 g / cm3, flocculent filling tshwj xeeb lub ntiajteb txawj nqus: 0.20-0.27 g / cm3.
Cov khoom siv tshuaj lom neeg:
- dej-soluble: pva molecules tau yooj yim soluble hauv dej vim tias lawv muaj ntau pawg hydroxyl. nws solubility nce nrog qhov nce ntawm cov dej kub, tsuas yog nthuav tawm hauv dej txias (cov khoom tsis tshua muaj cawv tuaj yeem maj mam yaj hauv dej kub), thiab tuaj yeem yaj tag nrho hauv dej kub. nws cov kua dej aqueous muaj cov yeeb yaj kiab zoo tsim thiab cohesive zog.
- thermal stability: cov khoom softens thaum rhuab, tsis hloov ho qis dua 40 ℃, 160 ℃ rau ib lub sij hawm ntev cua sov yuav maj mam xim, decomposition tshwm sim saum 220 ℃, ua rau dej, acetic acid, acetaldehyde thiab butenal.
- chemical tsis kam: cov khoom tsis cuam tshuam los ntawm qaug zog acid, tsis muaj zog hauv paus lossis organic hnyav, thiab muaj roj ua haujlwm siab.
- cia ruaj khov: cov khoom lag luam zoo ruaj khov, kev cia ntev ntev hauv lub xeev qhuav tsis pwm, tsis deteriorate, tsis nqus dej noo.
- pva yog ib qho polymer nrog cov pab pawg hydroxyl theem nrab. Secondary hydroxyl pawg nyob rau hauv pva molecular mis muaj siab reactivity, thiab muaj peev xwm ua tau raws li cov tshuaj tiv thaiv zoo ib yam li tsawg molecular cawv, xws li esterification, etherification, acetalization, thiab lwm yam, thiab kuj reacts nrog ntau inorganic tebchaw thiab organic compounds. non-toxic rau tib neeg thiab tsiaj txhu, ib txwm degradable, hu ua cov khoom ntsuab.
Cov ntsiab lus ntawm cov khoom
|
yam |
hydrolysis (mol%) |
viscosity (mpa.s) |
tsis hloov pauv (% ≤) |
tshauv (% ≤) |
ph (tus nqi) |
|
03-88 (l) |
85.0-90.0 Nws |
2.5-3.5 |
≤ 7.0 |
≤0.7 |
5 ~ 7 |
|
03-97 (l) |
95.0-99.0 Nws |
3.0-4.0 Nws |
≤ 7.0 |
≤0.7 |
5 ~ 7 |
|
04-88 (l) |
85.0-90.0 Nws |
3.5-4.5 |
≤ 7.0 |
≤0.7 |
5 ~ 7 |
|
04-99 (l) |
98.0-99.8 Nws |
3.5-4.5 |
≤ 7.0 |
≤0.7 |
5 ~ 7 |
|
05-88 (l) |
85.0-90.0 Nws |
4.5-6.5 |
≤ 7.0 |
≤0.7 |
5 ~ 7 |
|
05-99 (l) |
98.0-99.8 Nws |
4.5-7.0 Nws |
≤ 7.0 |
≤0.7 |
5 ~ 7 |
|
08-88 (l) |
85.0-90.0 Nws |
6.5-8.0 Nws |
≤ 7.0 |
≤0.7 |
5 ~ 7 |
|
08-99 (l) |
98.0-99.8 Nws |
7.0-9.0 Nws |
≤ 7.0 |
≤0.7 |
5 ~ 7 |
|
10-88 (l) |
85.0-90.0 Nws |
8.0-11.0 Nws |
≤ 7.0 |
≤0.7 |
5 ~ 7 |
|
10-99 (l) |
98.0-99.8 Nws |
8.0-12.0 Nws |
≤ 7.0 |
≤0.7 |
5 ~ 7 |
|
13-88 (l) |
86.0-90.0 Nws |
11.0-14.0 Nws |
≤ 7.0 |
≤0.7 |
5 ~ 7 |
|
14-92 (l) |
90.0-94.0 Nws |
13.0-17.0 Nws |
≤ 7.0 |
≤0.7 |
5 ~ 7 |
|
15-99 (l) |
98.0-99.8 Nws |
13.0-18.0 Nws |
≤ 7.0 |
≤0.7 |
5 ~ 7 |
|
17-88 (l) |
85.0-90.0 Nws |
20.0-28.0 Nws |
≤ 7.0 |
≤0.7 |
5 ~ 7 |
|
17-92 (l) |
90.0-94.0 Nws |
20.0-28.0 Nws |
≤ 7.0 |
≤0.7 |
5 ~ 7 |
|
17-98 (l) |
97.0-99.0 Nws |
24.0-32.0 Nws |
≤ 7.0 |
≤0.7 |
5 ~ 7 |
|
17-99 (l) |
99.0-100.0 Nws |
22.0-32.0 Nws |
≤ 7.0 |
≤0.5 |
5 ~ 7 |
|
20-88 (l) |
85.0-90.0 Nws |
28.0-40.0 Nws |
≤ 7.0 |
≤0.5 |
5 ~ 7 |
|
20-92 (l) |
90.0-94.0 Nws |
29.0-40.0 Nws |
≤ 7.0 |
≤0.7 |
5 ~ 7 |
|
20-99 (l) |
99.0-100.0 Nws |
35.0-48.0 Nws |
≤ 7.0 |
≤0.7 |
5 ~ 7 |
|
24-88 (l) |
85.0-90.0 Nws |
43.0-58.0 Nws |
≤ 7.0 |
≤0.7 |
5 ~ 7 |
|
24-99 (l) |
99.0-100.0 Nws |
65.0-85.0 Nws |
≤ 7.0 |
≤1.0 |
5 ~ 7 |
|
26-99 (l) |
99.0-100.0 Nws |
85.0-100.0 Nws |
≤ 7.0 |
≤0.7 |
5 ~ 7 |
|
17-99 (h) |
99.0-100.0 Nws |
20.0-26.0 Nws |
≤8.0 |
≤ 2.8 |
7 ~ 10 |
|
19-99 (h) |
99.0-100.0 Nws |
26.0-34.0 Nws |
≤8.0 |
≤ 2.8 |
7 ~ 10 |
|
20-99 (h) |
99.0-100.0 Nws |
34.0-42.0 Nws |
≤8.0 |
≤ 2.8 |
7 ~ 10 |
|
23-99 (h) |
99.0-100.0 Nws |
42.0-55.0 Nws |
≤6.5 |
≤ 2.5 |
7 ~ 10 |
|
22-99 (h) |
99.0-100.0 Nws |
42.0-55.0 Nws |
≤8.0 |
≤ 2.8 |
7 ~ 10 |
|
24-99 (h) |
99.0-100.0 Nws |
55.0-65.0 Nws |
≤8.0 |
≤ 2.8 |
7 ~ 10 |
pob khoom
20 kg / hnab, 25 kg / hnab.
