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- A preparation method of urea-formaldehyde resin adhesive with low free formaldehyde content and high adhesive strength was presented. 介绍了含游离甲醛低的粘结强度大的建筑行业用脲醛树脂粘合剂的制备方法。
- Water proofness of urea-forrualdehyde resin can be improved by adding melamine and polyvinyl alcohol. The free formaldehyde content in the modified resin lowered obviously. 采用加入聚乙烯醇及三聚氰胺等方法来改善脲醛树脂胶粘剂的耐水性,制得的树脂游离醛含量明显下降。
- Experiments were made by different methods of microwave plasma processing on curing time,application period,bonding strength and free formaldehyde content of UF resin. 试验结果表明:等离子处理对脲醛树脂胶粘剂的固化时间和适用期的影响不明显;
- The third urea joined may obviously reduce the free formaldehyde content of the reacting system, at the same time the reaction production was mainly monomethylolurea. 第3次尿素的加入可以明显地降低反应体系中的游离甲醛含量，同时主要生成为-羟甲脲。
- The addition of urea in divided portions in steps can lower the free formaldehyde content obviously, and mono-and di-substituted ureas exist in the resin after the end of reaction. 分次加尿工艺能明显降低树脂中的游离甲醛含量，游离尿素并不存在，尿素主要以一取代脉和二取代脉的形式存在。
- The paper introduces a simple but economical technology to lower free formaldehyde content in high formulation urea-formaldehyde resin without changing the resin's original formula. 介绍了在不改变脲醛树脂原有配方的前提下;采用简单可行;经济合算的新工艺;来降低高配比树脂中的游离甲醛含量.
- This paper introduced a preparation of modified polyvinyl formal adhesive.The adhesive has advantage of low free formaldehyde content,good viscosity stability and low temperature storage stability. 介绍了聚乙烯醇缩甲醛改性胶粘剂的制备方法。该胶粘剂具有粘度高,游离甲醛低,稳定性好的优点。
- Standard Test Method for Free Formaldehyde Content of Amino Resins 氨基树脂中游离甲醛含量的测试方法
- Resin finishing agent; Determination of free formaldehyde content 树脂整理剂中游离甲醛含量的测定方法
- Solutions to Reducing Free Formaldehyde Content in Crease and Shrink Resin Finishing of Silk Fabrics 降低真丝绸防缩抗皱树脂整理中游离甲醛的办法
- Quantitative analysis of free formaldehyde content in urea resin by gas chromatography 脲醛树脂中游离甲醛气相色谱的分析
- free formaldehyde content 游离甲醛含量
- The method to determine the content of free formaldehyde in Glycerol formal is established. 介绍了一种利用高效液相色谱法测定甘油缩甲醛中游离甲醛含量的方法。
- Glycoluril prepared under optimized process conditions has the following good properties of low content of free formaldehyde,durable and stable and crease-proofing. 用优化的工艺条件制备的甘脲树脂，具有游离甲醛含量低、耐久定型、抗折皱的优良性能。
- Features: High fastness, soft, The formaldehyde content is in accordance with the International Standard. 色泽饱满、牢度好、手感软,环保指数达国际环保织物要求。
- With the extreme low free formaldehyde adhesive, it is harmless to health and is a green product. 采用极低游离甲醛胶合剂,对人体无害是最具环保色彩的绿色产品。
- The paper discussed in detail a method of determination of formaldehyde content in textileacetyl-propionyl. 详细介绍了纺织品中甲醛含量的一种测定方法戊二酮法。
- Determination of free formaldehyde in "107 Building Glue" with electric potential titration is presented. 提出了用电位滴定法测定107建筑胶中游离甲醛含量的方法。
- Color reaction with acetylacetone is used to determine the formaldehyde content in fabrics. 织物中甲醛的测定大多采用乙酰丙酮的显色反应。
- Catalytic dehydrogenation of methanol is a promising process of producing water free formaldehyde. 利用甲醇催化脱氢合成无水甲醛是一条新的工艺路线。
