The polyvinyl formal was prepared via acetalation from polyvinyl alcohol and formaldehyde in water-solution under the condition of pH value was 1.
5~2的条件下,以聚乙烯醇和甲醛为原料,在水溶液中发生缩醛反应制备聚乙烯醇缩甲醛胶,然后向胶中添加适量的尿素和分散助剂PAAM/COB,经调配得到新型水溶性聚乙烯醇缩甲醛涂料。
In accordance with the princiole that in acid media the condensation reaction of hydroxylaldehyde is inversible, a way is given for the regeneration of the gel formed in the process of preparing polyvinyl formal.
根据在酸性介质中羟醛缩合反应是可逆的原理,对聚乙烯醇缩甲醛的制备过程中出现的凝胶进行再生处理,减少了原料浪费。
This paper introduced how to make a fast-drying emulsion adhesive based on polyvinyl formaldehyde.
介绍了一种以改性的聚乙烯醇缩甲醛为基料的强力快干型抗冻乳白胶。
The nonionic poly(vinyl formal) hydrogels with different porosities were synthesized by adding pore-forming agents, their swelling/deswelling behaviors and mechanical properties were measured in order to evaluate the effects of porosity.
通过成孔剂法制备不同孔隙率的聚乙烯醇缩甲醛凝胶(PVFM),其具有对含水量变化快速响应的特性,研究其在吸水、脱水过程中孔隙率对体积、质量、力学性能变化的影响。
polyvinyl formal wire
聚乙烯醇缩甲醛绝缘线
pelyvinyl formal fibre
聚乙烯醇缩甲醛纤维
polyvinyl formal high strength wire coating
聚乙烯醇缩甲醛高强度漆包线漆
Modified Polyvinyl Formal Cement Adhesive by Epoxy Resin
环氧改性聚乙烯醇缩甲醛水泥胶粘剂
THE PREPARATION AND APPLICATION OF MODIFYING POLYVINYL FORMAL ADHESIVE FOR BUILDING ENGINEERING
改性聚乙烯醇缩甲醛胶的合成及应用
PREPARATION OF BAMBOO CHARCOAL/POLYVINYL FORMAL COMPOSITE MATERIAL
竹炭/聚乙烯醇缩甲醛复合材料的制备
Preparation of Novel Polyvinyl Formal Composits
新型聚乙烯醇缩甲醛复合材料的制备
Preparation of polyvinyl formal foam for vascular intervention
用于血管介入聚乙烯醇缩甲醛泡沫材料的制备
Preparation of Poly(Vinyl Formal) Cellular Plastics Modified with Melamine and Its Thermal Property
三聚氰胺改性聚乙烯醇缩甲醛泡沫材料的制备与热性能
polyvinyl acetal resin
聚乙烯醇缩乙醛树脂
Study on the Factors Affecting Free Formaldehyde in Poly(Vinyl formal) Resin
聚乙烯醇缩醛树脂中残留甲醛含量的影响因素
polyvinyl butyral cementing agent
聚乙烯醇缩丁醛粘合剂
Exploration and Control of the lnfluecing Factors for the Polyvinyl Formal Acetal Production
聚乙烯醇缩甲乙醛工业生产中影响因素的探讨与控制
Study on Application of Crotonaldehyde in Adhesives of Poly (Vinyl Acetals);
丁烯醛在聚乙烯醇缩醛胶方面的应用研究
straw green epoxy polyvinyl butyral enamel
草绿环氧聚乙烯醇丁缩醛磁漆
The Acetal Formation of Ferrocenyl Aldehyde With Ethylene Glycol Catalyzed by Polystyrene-Lewis Acid Complex
聚苯乙烯－路易斯酸复合物催化下二茂铁甲醛与乙二醇的缩醛化反应
Kinetic Study on Production of PVB by Alcohol Method
醇法生产聚乙烯醇缩丁醛的动力学研究
Preparation of Water Soluble Polyacetal by Condensation of Polyvinyl Alcohol with Glyoxal
水溶性聚乙烯醇缩乙二醛胶粘剂的制备