Methyl methacrylate（MMA）—butyl acrylate（BA）—acrylic acid（AA） copolymer emulsion was prepared by emulsion polymerization using a redox initiation system of（NH4）2SO8-NaSO3.Factor of affecting copolymerization ...Methyl methacrylate（MMA）—butyl acrylate（BA）—acrylic acid（AA） copolymer emulsion was prepared by emulsion polymerization using a redox initiation system of（NH4）2SO8-NaSO3.Factor of affecting copolymerization and emulsion performance were studied.The experimental results show that the reaction rate,latex′s particle diameter and emulsion performance are affected by AA content.It is not important that the influence of composition of MMA-BA on the film forming.By seeding emulsion polymerization,copolymer emulsion stability is very well.Feeding ammonia water,the copolymer emulsion dissolved.Copolymer film is very good.展开更多
The waterborne polyurethane-acrylate hybrid emulsions modified by methyl methacrylate(MMA)and butyl acrylate(BA)copolymer were synthesized by using 1,4-butanediol(BDO),dimethylopropionic(DMPA)and adipic dihyrazide(ADH...The waterborne polyurethane-acrylate hybrid emulsions modified by methyl methacrylate(MMA)and butyl acrylate(BA)copolymer were synthesized by using 1,4-butanediol(BDO),dimethylopropionic(DMPA)and adipic dihyrazide(ADH)as chain extenders.The effects of the amounts of BA and diacetone acrylamide(DAAM)on the properties of hybrid emulsions,films and adhesive were studied.The structure of the hybrid emulsions was characterized with Fourier transform infrared(FTIR).The experiment results showed that when the amount of BA was 4.0%—6.0%,that of DAAM was 2.0%—3.0%,the properties of the hybrid emulsion,films and adhesive were satisfactory.The adhesive which was made by polyurethane-acrylate hybrid emulsion with a better adhesive for wood.展开更多
文摘Methyl methacrylate（MMA）—butyl acrylate（BA）—acrylic acid（AA） copolymer emulsion was prepared by emulsion polymerization using a redox initiation system of（NH4）2SO8-NaSO3.Factor of affecting copolymerization and emulsion performance were studied.The experimental results show that the reaction rate,latex′s particle diameter and emulsion performance are affected by AA content.It is not important that the influence of composition of MMA-BA on the film forming.By seeding emulsion polymerization,copolymer emulsion stability is very well.Feeding ammonia water,the copolymer emulsion dissolved.Copolymer film is very good.
文摘The waterborne polyurethane-acrylate hybrid emulsions modified by methyl methacrylate(MMA)and butyl acrylate(BA)copolymer were synthesized by using 1,4-butanediol(BDO),dimethylopropionic(DMPA)and adipic dihyrazide(ADH)as chain extenders.The effects of the amounts of BA and diacetone acrylamide(DAAM)on the properties of hybrid emulsions,films and adhesive were studied.The structure of the hybrid emulsions was characterized with Fourier transform infrared(FTIR).The experiment results showed that when the amount of BA was 4.0%—6.0%,that of DAAM was 2.0%—3.0%,the properties of the hybrid emulsion,films and adhesive were satisfactory.The adhesive which was made by polyurethane-acrylate hybrid emulsion with a better adhesive for wood.
