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- 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。
- 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。
- 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。
- 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。
- Dye fixative H is a Kind of compound of cationic resinpolymers, which don't contain free formaldehyde. 无甲醛固色剂H为多聚胺复合物,其阳离子强度适中。
- 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。
- It shows that the free formaldehyde concentration could be decreased effectively by adding collagen hydrolysate at the end of acidic reaction period. 试验结果表明:在酸性缩合末期,添加胶原蛋白水解物,可大大降低氨基树脂中游离甲醛的含量。
- The experimental result indicate:free formaldehyde reduced obviously,flexility of modified UF resin is enhanced clearly. 实验结果表明:改性后游离甲醛含量明显降低,韧性有了较大的提高。
- Because of free formaldehyde, the product will release formaldehyde gas during use, resulting in environment pollution, and damage people’s health. 由于游离的甲醛存在,产品使用期间会逐渐向周围散发甲醛气体,造成环境污染,危害人们的身体健康。
- In this paper,another kind of material was added into the system,which reacted with free formaldehyde irreversibly to remove it completely. 本研究从另一思路入手,加入另一类物质,使游离甲醛与之发生单向不可逆反应,以彻底去除游离甲醛。
- 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。
- 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 synthesis method was modified to achieve low free formaldehyde in sulfonated amino resin and to improve its retanning and filling properties in leather making industry. 以获得低游离甲醛含量的氨基树脂为目的,并改善其复鞣填充的综合性能,对磺化氨基树脂合成工艺进行了改进。
- Bamboo floor uses the adhesive of low dissociate formaldehyde generally, and dosage is small, because this is in use process, of free formaldehyde release a quantity very little. 竹材地板普遍采用低游离甲醛的胶粘剂,且用量小,因此在使用过程中,游离甲醛的释放量微乎其微。
- 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。
- Reading occupies most of my free time. 阅读占去了我大部分的闲暇时间。
- UF Resin with lower content of free formaldehyde could be obtained by adopting the technipues of decreasing formaldehyde/urea molar ratio,charging urea in three times and without dewatering. 本文采用降低甲醛和尿素摩尔比,分批加入尿素和不脱水工艺合成游离甲醛含量低的脲醛树脂。
- Researchers studied the process conditions for synthesizing superlow formaldehyde etherified resin by etherifying 2D resin with polylol and the factors influencing free formaldehyde from resin. 探讨了用多元醇醚化2D树脂合成超低甲醛醚化树脂的工艺条件和影响树脂游离甲醛量的因素。