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- 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。
- 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。
- content of free formaldehyde 游离甲醛释放量/含量
- 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。
- 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。
- 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。
- Adding the PQ additive with 2 times, to the addition-condensation reaction of urea with formaldehyde, can reduce the content of free CH2O and increase stability of UF resin adhesive . 在尿素与甲醛加成-缩合反应中，分2次加入自制PQ复合添加剂，可明显降低游离甲醛的含量，提高脲醛树脂胶粘剂（UF胶）的稳定性。
- Adding the PQ additive with 2 times, to the addition condensation reaction of urea with formaldehyde, can reduce the content of free CH 2O and increase stability of UF resin adhesive . 在尿素与甲醛加成-缩合反应中,分2次加入自制PQ复合添加剂,可明显降低游离甲醛的含量,提高脲醛树脂胶粘剂(UF胶)的稳定性。
- 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 politician cops out on the issue of free trade. 那政客对自由贸易的问题只是一味逃避。
- 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
- While the content of free rosin acid in the dispersed rosin sizes is high, the sizing effect is better. 而分散松香胶中游离松香含量高，分散越好，施胶的效果越佳。
- They are advocates of free trade. 他们是自由贸易的倡导者。
- The content of free toluene diisocyanate(TDI) in solidified agent for polyurethane is determined by gas chromatography. 采用气相色谱法分析了聚氨酯固化剂中游离甲苯二异氰酸酯(TDI)含量。
- Under this optimum dose,the content of free sulfhydryl group decreases,the water holding capacity increases... 在其最适添加量下,面粉中游离巯基含量下降,持水性增加,粉质特性以及成品面条、速冻饺子的品质均得到改善。
- An obstacle to or a censoring of free speech. 言论限制对言论自由的审查或言论自由的障碍
- 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
- Conclusion: The magnetized liquor can affect the metabolism of free radical and the content of cholesterol in the brain of mice. 结论:磁处理白酒可影响小鼠脑组织的自由基代谢及胆固醇含量。
