| 引用本文: | 赵佳宁,顾继友,郭 楠.弱酸性固化剂对UF树脂固化性能的影响分析[J].材料科学与工艺,2013,21(2):131-136.DOI:10.11951/j.issn.1005-0299.20130223. |
| ZHAO Jia-ning,GU Ji-you,GUO Nan.Effect of weak acidity curing agents on condensate characteristics of urea-formaldehyde (UF) resin[J].Materials Science and Technology,2013,21(2):131-136.DOI:10.11951/j.issn.1005-0299.20130223. |
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| 摘要: |
| 为研究不同种类固化剂对弱酸性起始合成脲醛树脂(UF)固化性能的影响,选用6种固化剂研究固化剂对弱酸性起始合成UF树脂的固化速度、适用期、胶接材料的胶接强度和材料甲醛释放量的影响.研究结果表明:单组份固化剂中,双氧水作为固化剂时UF树脂适用期最长,氯化铵固化速度最快；双氧水加入量是UF树脂质量的5%时,树脂胶接材料的甲醛释放量最低,胶合强度最高；聚醋酸乙烯酯、磷酸二氢铵、氯化铝、柠檬酸和尿素组成的多组分固化剂适用期最长.氯化铵、硫酸铝和尿素组成复合固化剂的UF树脂固化物的甲醛释放量和固化温度最低. |
| 关键词: UF树脂 甲醛释放量 固化性能 弱酸性 固化剂 |
| DOI：10.11951/j.issn.1005-0299.20130223 |
| 分类号: |
| 基金项目:中央高校基本科研业务费专项基金资助项目(DL10BB14). |
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| Effect of weak acidity curing agents on condensate characteristics of urea-formaldehyde (UF) resin |
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ZHAO Jia-ning,GU Ji-you,GUO Nan
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(Material Science and Engineering College,Northeast Forestry University,Harbin 150040,China)
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| Abstract: |
| Six kinds of curing agents were selected to research the effect of curing agent on the curing behaviors of the urea-formaldehyde resin which was synthesized under initial weak acidity condition.The curing behaviors investigated here include curing rate,pot life,bonding strength and formaldehyde emission of the UF resin.The results showed that when hydrogen peroxide was used as curing agent in the one-component curing system,pot life of the UF resin was the longest and curing speed of the ammonium chloride is the highest.When the mass fraction of hydrogen peroxide is 5% in the UF resin,the resin bonded material has the lowest formaldehyde emission and biggest bonding strength.When using the multi-component curing system which contained polyvinyl alcohol ester,ammonium dihydrogen phosphate,aluminum chloride,citric and urea,the UF resin had the longest pot life.When the multi-component curing agent was composed of aluminum chloride,aluminum sulfate and urea,the resin condensate had the lowest formaldehyde emission and curing temperature. |
| Key words: UF resin formaldehyde emission curing performance weak acidity curing agent |
