| 气膜法低醛化脲醛树脂合成及木材胶合性能 |
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| 引用本文： | 傅深渊,张新庆,方崇荣.气膜法低醛化脲醛树脂合成及木材胶合性能[J].化学与粘合,2004(3):123-126. |
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| 作者姓名： | 傅深渊 张新庆 方崇荣 |
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| 作者单位： | 浙江林学院,工程学院,浙江,杭州,311300;浙江工业大学,浙江,杭州,310014;浙江省林产品质量监督检验站,浙江,杭州,310009 |
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| 基金项目： | 国家星火项目 ( 2 0 0 1EA70 0 0 0 3 )，浙江省农业科技成果转化资金项目 ( 2 0 0 3年度 )内容 |
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| 摘 要： | 采用中间加入起泡剂鼓泡，进行气液传质交换的方法，合成环保型脲醛胶，游离甲醛降到0．05％以下，胶合板胶合强度达0．7MPa以上，并且对板材生产工艺可操作性强，其制品甲醛释放量都达到1．5mg,／L(干燥器法)以下，符合GB18580-2001E1标准要求。红外(IR)光谱进一步证实，气膜法可提高脲醛树脂、尿素中-NH2的加成反应率以及树脂固化的交联度，降低游离甲醛。
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| 关 键 词： | 气膜法 气液传质 低醛化脲醛树脂 甲醛释放量 |
| 文章编号： | 1001-0017(2004)03-0123-04 |
Synthesis and Wood - Glueing Properties of Low Formaldehyde UF Resin Produced with Gas- Membrane |
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| FU Shen-Yuan,ZHANG Xin-qing and FANG Chong-rong.Synthesis and Wood - Glueing Properties of Low Formaldehyde UF Resin Produced with Gas- Membrane[J].Chemistry and Adhesion,2004(3):123-126. |
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| Authors: | FU Shen-Yuan ZHANG Xin-qing and FANG Chong-rong |
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| Affiliation: | FU Shen-Yuan~1,ZHANG Xin-qing~2 and FANG Chong-rong~3 |
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| Abstract: | By the use of adding bubbling agents halfway and mass transmitting between liquid and gas, the UF resin with low-toxicity was synthesized and the content of free formaldehyde was reduced to 0.05%. The bond strength of the plywood glued with this UF resin was above 0.7 MPa and productive procedure for this UF resin was more practicable. The formaldehyde emission of the plywood products was less than 1.5 mg/L and accorded with the demand of GB 18580-2001 E 1. The IR spectrum showed that the addition reaction rate of -NH 2 groups within UF resin and carbamide was increased, the crosslinking degree of the UF resin was also increased and the free formaldehyde in UF resin was decreased while the gas-membrane process had been used. |
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| Keywords: | gas-membrane mass transmitting between liquid and gas low formaldehyde UF resin formaldehyde emission |
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