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1)  poly(vinyl formal)foam
聚乙烯醇缩甲醛泡沫塑料
2)  polyethylene foaming composites
聚乙烯泡沫塑料
1.
This kind of materials has a lot of advantages except for what the common plastics have, so polyethylene foaming composites are one kind with a large domain of application in industry and agriculture, science and technology and many areas in daily life.
因此,对聚乙烯泡沫塑料做阻燃处理是当务之急,并且随着国外禁卤运动的不断推进,无卤阻燃的研究变得十分必要。
3)  polyvinyl formal
聚乙烯醇缩甲醛
1.
The polyvinyl formal was prepared via acetalation from polyvinyl alcohol and formaldehyde in water-solution under the condition of pH value was 1.
5~2的条件下,以聚乙烯醇和甲醛为原料,在水溶液中发生缩醛反应制备聚乙烯醇缩甲醛胶,然后向胶中添加适量的尿素和分散助剂PAAM/COB,经调配得到新型水溶性聚乙烯醇缩甲醛涂料。
2.
In accordance with the princiole that in acid media the condensation reaction of hydroxylaldehyde is inversible, a way is given for the regeneration of the gel formed in the process of preparing polyvinyl formal.
根据在酸性介质中羟醛缩合反应是可逆的原理,对聚乙烯醇缩甲醛的制备过程中出现的凝胶进行再生处理,减少了原料浪费。
4)  polyvinyl formaldehyde
聚乙烯醇缩甲醛
1.
This paper introduced how to make a fast-drying emulsion adhesive based on polyvinyl formaldehyde.
介绍了一种以改性的聚乙烯醇缩甲醛为基料的强力快干型抗冻乳白胶。
5)  poly(vinyl formal)
聚乙烯醇缩甲醛
1.
The nonionic poly(vinyl formal) hydrogels with different porosities were synthesized by adding pore-forming agents, their swelling/deswelling behaviors and mechanical properties were measured in order to evaluate the effects of porosity.
通过成孔剂法制备不同孔隙率的聚乙烯醇缩甲醛凝胶(PVFM),其具有对含水量变化快速响应的特性,研究其在吸水、脱水过程中孔隙率对体积、质量、力学性能变化的影响。
6)  expandable polystyrene pattern
聚苯乙烯泡沫塑料模样
补充资料:聚乙烯醇缩甲醛泡沫塑料
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性质: 以聚乙烯醇缩甲醛树脂为基材,内部布满微孔的塑料,微孔为白色开孔结构,干时质硬,机械强度高,湿时质地柔软,有弹性,不受细菌破坏,耐各种浓度的甲醛溶液和30%以下的强酸作用,能与30%~70%的水溶性有机溶剂起作用,但甘油例外。可加入填料以改进其制品特性。如在未发泡前混合阶段加入耐磨填料,可生产出耐磨制品。由于泡孔互相贯通,有利于纤维组织及毛细管的长入,耐热,可消毒、异物反应少,在医学上用于填塞胸腔、手术后的残腔。在整形外科上可用于填塞缺损凹陷。另外,可作抹布、代替毛毡作抛光材料,制成层压制品可用于飞机、坦克作防护等。

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