产品
新产品

聚羧酸超塑化剂

羟丙基甲基纤维素(HPMC)

可再分散性聚合物粉末(RDP、VAE)

水溶性 PVA 纤维

PVA 2088G

The PVA 2088G production facilities of our company have been perfecting day by day with the long-term absorption and technological transformation on the basis of importing the complete set of technology from European Company. PVA produced by our company is good in performances and stable in quality. It enjoys a great reputation both at home and abroad.

产品说明

The PVA 2088G production facilities of our company have been perfecting day by day with the long-term absorption and technological transformation on the basis of importing the complete set of technology from European Company. PVA produced by our company is good in performances and stable in quality. It enjoys a great reputation both at home and abroad.
 
产品特点
部分酒精中毒
低粘度。
 
同等学历:
088-35
可乐丽 PVA-217
库拉雷-莫维奥尔 32-88
CCP BP-20
JVP JP-20 

产品 参数(规格)

项目

PVA 2088G

水解(摩尔%)

87.0 ~ 89.0

粘度(mPa.s)

28.0 ~ 35.0

挥发性(wt%)

≤5.0

灰分(wt%)

≤0.5

pH 值

5 ~ 7

纯度 (%)

≥91.5

粒子 尺寸

20~25网目

存储: 产品应存放在干燥通风的室内,室温为 5-30℃,并分批存放。远离电源、湿气和阳光。严禁与易挥发的化学品一起存放,以防吸附变质。

交通 运输时要求车辆清洁,注意防潮、防雨、防晒。小心搬运,防止损坏包装。严禁与易挥发的化学品存放在一起,以防吸附变质。
 
常见问题
问:聚乙烯醇的属性指数是多少?
答:聚乙烯醇 PVA 是一种固体物质,无色无味,呈絮状、片状或颗粒状。由于其分子中含有大量羟基,PVA 易溶于水,也易溶于甘油、乙二醇、乙酸、乙醛和苯甲酸等含羟基的有机化合物,但不溶于一般有机溶剂。加热到 130-140℃ 时,PVA 变黄,性质无本质变化;在 160℃ 下长时间加热,颜色变深;200℃ 时,分子间脱水,水溶性降低;200℃ 以上时,分子内脱水;接近 300℃ 时,PVA 分解为水、乙酸、乙醛和巴豆醛。醇解方法不同,PVA 的体积密度也不同:高碱醇解为 0.2~0.27 克/毫升,低碱醇解为 0.42~0.52 克/毫升。

Hot Tags: PVA 2088G, China, Manufacturers, Suppliers, Factory, Wholesale, Customized, Free Sample, Brands, Price, Quality

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