| 新型环保尿醛胶的研制及应用 |
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| 引用本文： | 刘振泉,刘洪华,刘秀娟,李安君.新型环保尿醛胶的研制及应用[J].吉林林业科技,2012,41(3):28-29. |
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| 作者姓名： | 刘振泉 刘洪华 刘秀娟 李安君 |
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| 作者单位： | 1. 吉林省辉南森林经营局,吉林通化,135102
2. 吉林龙湾国家级自然保护区管理局,吉林通化,135102 |
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| 摘 要： | 新型DNQ胶的工艺流程为:甲醛和尿素摩尔比1.001.30,二次尿素投入,投入比U1=65%、U2=35%,聚乙烯醇2.5%,酸性阶段pH=4.2～4.5,控制温度90℃～92℃,放料前加入甲醛吸收剂(MS),调pH=7.5～8.0。DNQ胶固体含量55%～60%,粘度35～60 S(T4),贮存期2～3个月,游离甲醛含量<0.3 mg·L-1,达到国家标准(E0<0.5 mg·L-1)。使用新型DNQ胶生产的刨花板,物理力学性能指标达到或超过国家标准。
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| 关 键 词： | 环保尿醛胶 生产工艺 刨花板 |
The research and application of new environmental friendly Urea-formaldehyede (DNQ) |
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| LIU Zhen-quan
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LIU Hong-hua
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LIU Xiu-juan
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LI An-jun.The research and application of new environmental friendly Urea-formaldehyede (DNQ)[J].Jilin Forestry Scicnce and Technology,2012,41(3):28-29. |
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| Authors: | LIU Zhen-quan LIU Hong-hua LIU Xiu-juan LI An-jun |
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| Abstract: | The technological process of new DNQ was: the mole ratio of formaldehyde and urea was 1.001.30.The urea was fed twice,65% firstly and 35% secondly.The polyvinyl alcohol was 2.5%.The pH was controlled at 4.2~4.5 in acid stage,and the temperature was 90℃~92℃.The formaldehyde absorbent should be added before feeding materials.Then the pH was adjusted at 7.5~8.0.The solid content of DNQ was 55%~60%,and viscosity was 35-60S(T4).The storage period was 2~3 months.The content of dissociative formaldehyde was <0.3 mg·L-1,which reach the national stand(E0<0.5 mg·L-1).The physical characteristics of particleboard produced by the new DNQ were at or above the national criterions. |
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| Keywords: | environmental friendly Urea-formaldehyede technological process particleboard |
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