| 环保型脲醛树脂胶粘剂合成工艺的研究 |
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| 引用本文： | 杨明平,彭荣华,李国斌.环保型脲醛树脂胶粘剂合成工艺的研究[J].湖南科技大学学报(自然科学版),2003,18(3):92-94. |
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| 作者姓名： | 杨明平 彭荣华 李国斌 |
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| 作者单位： | 湖南科技大学,化学工程系,湖南,湘潭,411201 |
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| 摘 要： | 通过对低毒环保型脲醛树脂胶粘剂的合成工艺进行研究,得出的结论为按工艺条件,一次性加入甲醛后,用NaOH或NH_4Cl调节pH值、用聚乙烯醇作改性剂,在适当的温度下分批加入尿素,进行阶段反应,从而获得一种乳白色的胶粘剂。按此工艺合成的脲醛树脂胶,其游离甲醇含量仅0.15％,产品陈放1周后,游离甲醛含量降到0.1％以下,完全可以满足环境保护的要求。图2,表2,参11。
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| 关 键 词： | 脲醛树脂胶粘剂 游离甲醛 改性剂 环保型 |
| 文章编号： | 1000-9930(2003)03-0092-03 |
| 修稿时间： | 2002年11月11 |
Research on synthetic technology of environmental protection type urea-formaldehyde resin adhesive |
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| YANG Ming-ping,PENG Rong-hua,LI Guo-bin.Research on synthetic technology of environmental protection type urea-formaldehyde resin adhesive[J].Journal of Hunan University of Science & Technology(Natural Science Editon),2003,18(3):92-94. |
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| Authors: | YANG Ming-ping PENG Rong-hua LI Guo-bin |
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| Abstract: | In this paper the synthetic technology for producing low toxic environmental protection type urea-formaldehyde resin adhesive was studied. First, formaldehyde is added in a whole, then NaOH or NH4Cl is used to adjust pH value, polyethylene alcohol is used as modification agent, and urea is added gradually at a reasonable temperature, when the reaction process completed, a milk white adhesive is obtained. The free formaldehyde content of the resin was 0. 15% and reduced to 0. 1% after one week, it is fully adequate to meet the demande of the environmental protection. 2figs. ,2tabs. ,11refs. |
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| Keywords: | urea-formaldehyde resin adhesive free formaldehyde modification agent environmental protection type |
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