查询词典 polyvinyl

A review is made of the history, current research situation and modification methods of wood adhesives in China, placing emphasis on three traditional types of formaldehyde-based resin wood adhesive and polyvinyl acetate emulsion used in panels second processing and furniture production, The development trend of wood adhesives in China is also summarized.

介绍了木工用胶粘剂发展的历史和研究现状及改性方法，重点是综合了传统木工用三种甲醛类胶粘剂和人造板二次加工及家具生产用聚乙酸乙烯酯乳液胶的研究进展，同时提出了木工胶粘剂的发展趋势。

This paper delivered the relationships of uniaxial tensile and compressive stress with strain and bending properties,and felt－bending strength of cement mortar with polyvinyl acetate.

研究掺聚醋酸乙烯水泥砂浆的轴拉和轴压应力—应变关系、抗弯性能以及长期粘结抗弯强度。

The surface hydroxyl group onto magnetic polyvinyl acetate nanoparticles can be obtained by saponification reaction on their surface.

结果表明，磁性聚苯乙烯颗粒与丁二酸酐发生Freidel-Crafts酰基化反应，可以在颗粒表面引入少量羧基；磁性聚甲基丙烯酸甲酯颗粒分别与乙二醇、二缩三乙二醇、聚乙二醇等发生醇-酯交换反应，可以在颗粒表面接枝不同分子链长度的末端羟基；磁性聚醋酸乙烯酯颗粒经过醇解或皂化反应可以获得表面羟基；磁性聚丙烯酸甲酯颗粒通过乙二胺或1，6己二胺的胺解反应可以得到表面氨基，继而与一氯乙酸反应可以引入亚胺二乙酸基团。

Test results show that, with the addition of polyvinyl acetate, the compressive strength and compressive modulus of mortar decrease distinctly, but the ultimate strain increases significantly. The uniaxial tensile strength and bending strength increase a little, but the tensile peak-strain and the ratio of tensile-compressive and bending-compressive increase remarkably.

试验结果表明，随着聚醋酸乙烯的掺入，砂浆的轴压强度和弹性模量显著下降，但极限应变却明显增大；砂浆的轴拉强度和抗弯强度均略有提高，而极限应变、拉压强度比和弯压强度比则显著增加。

The corrugated paper honeycomb sandwich was fabricated with corrugated paperboard of different flute and base weight using polyvinyl acetate emulsion,and impact test was carried out to study their dynamic performance.

比较了瓦楞结构蜂窝夹层和普通蜂窝夹层用纸量的差别，用聚醋酸乙烯酯乳液作为黏合剂，使用不同楞型和定量的瓦楞纸板制得瓦楞结构蜂窝夹层，利用冲击实验机研究其动态性能。

Polyvinyl acetate: A flexible cold melt adhesive made from synthetic resins.

聚乙烯醇：用人造树脂制成的柔韧冷胶。

Problems existing in the production of paper tube with polyvinyl alcohol were analyzed.

本文介绍了生产纸管用聚乙烯醇胶粘剂存在的问题，分析了问题产生的根本原因并提出了解决办法。

The effect of transition metal oxide on thermal degradation process of polyvinyl chloride was studied.

研究了过渡金属氧化物在聚氯乙烯热降解过程中的作用。

The effect of polyvinyl acetals on its adhesive strength was investigated.

探讨了聚乙烯醇缩醛的粘接强度的影响。

Division I professional sell a variety of domestic and polyvinyl chloride mainly of chemical plastic products.

目前我司专业销售各种国内外聚氯乙稀为主的化工塑料产品。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。