화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Polymer(Korea), Vol.41, No.2, 235-241, March, 2017
DOI10.7317/pk.2017.41.2.235  Export Citation
경화제 타입이 TMP 개질된 UF 수지 및 이를 대나무 파우더와 혼합한 복합재료의 경화 거동과 물리적 성질에 미치는 영향
Effects of Hardener Type on Cure Behavior and Physical Properties of TMP Modified UF Resin and Its Composites with Bamboo Powder
Yun-fei Zhang†, Man-geng Lu1, Hui Liu, and Yanguang Wu
  • School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan 430073, PR China
  • 1Key Laboratory of Cellulose and Lignocellulosics Chemistry, Guangzhou Institute of Chemistry, Guangzhou 510650, PR China, China
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In this study, effects of mixed hardeners (ammonium chloride mixed with ammonium persulfate, oxalate and phosphoric acid) on the properties of 2,4,6-trimethylolphenate modified UF resin (TMPUF) were studied, and the potlife, gel time and curing temperature of TMPUF/hardeners were characterized. The results indicated that the hardeners used have critical influence on the pH value of TMPUF and some proton donor can be used to lower the pH value of TMPUF with low formaldehyde content. Besides, bamboo particleboards were made with TMPUF/hardeners, and tensile properties, water absorption ratio and the swelling ratio of bamboo particleboards were characterized. The study demonstrated that the tensile strength of bamboo particleboards increased when partial ammonium chloride was replaced by ammonium persulfate to cure the TMPUF adhesives in our experiment.
Keywords:mixed hardener;UF resin;bamboo particleboard;tensile strength
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