查询词典 aldehyde resin

The primary amine of DETA is closed by ethyl methyl ketone to reduce the reactivity of –NCO group and –NH2 group and smooth the reaction process. The mole ratio value of –NH2/-NCO should be 2.2 to make sure that –NCO group is completely closed in by –NH2 group and amine terminate compound is prepared. The reaction temperature, reaction time and the way of adding raw materials to vessel are discussed. Structure and performance of the resin are analyzed with infrared ray spectrum.

用甲乙酮封闭DETA分子中的伯胺基团，降低-NCO与-NH2的反应活性，使反应平稳进行；研究投料比和投料方式对反应的影响；为确保生成以氨基封端的聚氨酯树脂，并将游离的异氰酸酯反应完全，最佳原料投料比控制在-NH2/-NCO=2.2；确定合理的合成条件如反应温度、时间等；利用红外光谱分析端氨基聚氨酯树脂的结构与性能。

The swelling properties of epoxy vinyl ester resin/2-hydroxyethyl methacrylate copolymeric hydrogels were investigated.

该文研究了酚醛环氧型乙烯基酯树脂/甲基丙烯酸-β-羟乙酯共聚水凝胶的溶胀性质。

The method is validated by testing nylon, polymethyl methacrylate, epoxy resin. This study also finds that the calculation hardness is more reasonable than the measured value. When different material hardness is compared, we can find the former is more suitable.

试验中还发现，根据深度计算的硬度值与通过表盘读出的硬度值是不同的，在比较不同高分子材料的硬度时，前者比后者更合理。

Methods: Paraffin (7 μm in thickness) and methacrylate resin (25 μm) embedded renal sections were observed using 40× objective lens and 100× oil lens, respectively, and the volume fractions and diameters of the renal tubules and the tubule nuclei were estimated with stereological methods.

分别用高倍镜(40×物镜)和油镜(10 0×)观察石蜡(7μm厚)和甲基丙烯酸树脂(2 5 μm厚)包埋的肾脏切片，利用体视学方法测量肾小管的体积分数和直径以及肾小管细胞核的体积分数和直径。

Aqueous polyurethane ; epoxy resin ; methyl methacrylate ; hybrid dispersions

水性聚氨酯；环氧树脂；甲基丙烯酸酯甲酯；复合分散液

A series of hydrogels based on macromonomer novolac epoxy vinyl ester resin and hydrophilic-2-hydroxyethyl methacrylate were synthesized by bulk copolymerization.

采用大分子单体酚醛环氧型乙烯基酯树脂与亲水性单体甲基丙烯酸-β-羟乙酯为原料，以本体聚合方法制备了一系列新型水凝胶。

Using N,N′-dimethy-p-toluidineas the catalyst,bisphenol A-glycidyl methacrylate,the resin matrix in most dental composite restorative materials,was synthesized by the reaction of bisphenol A and glycidyl methacrylate,and characterized by FTIR,~1HNMR and M S.

以N，N-二甲基对甲苯胺为催化剂，双酚A和甲基丙烯酸缩水甘油酯为原料合成了一种常用的口腔修复材料树脂基质———双酚A双甲基丙烯酸缩水甘油酯，并用FTIR1、HNMR和质谱对其结构进行表征。

Anion exchange resin ; glycidyl methacrylate ; divinylbenzene ; porogenic diluent ; exchange capacity

阴离子交换树脂；甲基丙烯酸缩水甘油醚；二乙烯基苯；致孔剂；交换容量

Styrene and methacrylate super absorbent oil resin ; tar ; nicotine ; polynuclear aromatics compound

苯乙烯-甲基丙烯酸酯吸油性树脂；焦油；烟碱；稠环芳烃

Aqueous polyurethane ; epoxide resin ; methyl methacrylate ; hybrid emulsions

水性聚氨酯；环氧树脂；甲基丙烯酸酯甲酯；杂合分散体

You can buy sweetened beverages, if that suits you.

你若喜欢的话，可以买些含有糖精的混合饮料。

As many of you are probably aware, Nick and Vanessa were recently faced with an embarrasing sex scandal after naked pictures of the two getting jiggy with it in a hot tub surfaced the net.

正如很多你可能知道，尼克和 Vanessa 最近面临一个尴尬的绯闻事件后，赤裸裸的图片两个越来越jiggy与它在浴缸中的一个热点浮现净。