牌号简介 About |
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KURARAY POVAL™树脂是通过皂化过程将聚乙酸乙烯酯转化为聚乙烯醇而生产的。醋酸酯基团的百分比决定了水解作用水平。 Fully hydrolysed grade Mowiol® and Kuraray Poval® are the trade name of the polyvinyl alcohols marketed by Kuraray. These are manufactured from polyvinyl acetate by alcoholysis using a continuous process. By varying the degree of polymerization of the polyvinyl acetate and its degree of hydrolysis (saponification), a number of different grades can be supplied. Our PVOH types are offered in a high standard purity showing especially "low ash and VOC contents". Modification of emulsion adhesives, production of paper adhesives and remoistenable adhesives. Protective colloid in emulsion polymerisation and raw material for the production of sizes and textile finishes. Binder in the surface finishing of paper. Also for regulating the processing characteristics of all types of coatings. |
技术参数 Technical Data | |||
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物理性能 PHYSICAL |
额定值 Nominal Value |
单位 Units |
测试方法 Test Method |
pH值 PH value |
5.0 - 7.0 | ||
灰份含量 Ash Content |
≤ 0.40 | % | |
非挥发物 Non volatile substances |
97.0 ± 3.0 | % | |
粘度 viscosity |
0.054 - 0.066 | Pa·S | |
补充信息 Supplementary information |
额定值 Nominal Value |
单位 Units |
测试方法 Test Method |
醇解度 Alcoholysis degree |
98.0 - 99.0 | mo◊% |
备注 | |||
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暂无数据 |
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泡面桶内壁滑滑的是打了蜡吗?
2017-08-25 在食用桶装泡面的时候你有发现桶内是滑滑的,亮亮的吗?难道是泡面桶打了蜡?正确答案应该是聚乙烯涂层。 泡面桶的原材料是食品用纸板,众所周知,纸板本身是不防漏的,为了能承载泡方便面的热水,泡面桶的内壁就需要淋膜一层聚乙烯的涂层。那么在开水的“刺激”下, 含有聚乙烯的涂层是否会析出有害物质呢? |
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