木材用大豆油基异氰酸酯胶黏剂的制备与表征

doi:10.11707/j.1001-7488.20130416

林业科学 ›› 2013, Vol. 49 ›› Issue (4): 110-116.doi: 10.11707/j.1001-7488.20130416

木材用大豆油基异氰酸酯胶黏剂的制备与表征

张亚东¹, 顾继友¹, 郑志锋², 黄元波²

1. 东北林业大学材料科学与工程学院哈尔滨 150040;2. 西南林业大学材料工程学院昆明 650224

收稿日期:2012-02-24 修回日期:2012-07-13 出版日期:2013-04-25 发布日期:2013-04-25
通讯作者: 顾继友

Preparation and Characterization of Isocyanate Adhesive Based on Soybean Oil for Wood Bonding

Zhang Yadong¹, Gu Jiyou¹, Zheng Zhifeng², Huang Yuanbo²

1. College of Material Science and Technology, Northeast Forestry University Harbin 150040;2. College of Materials Engineering, Southwest Forestry University Kunming 650224

Received:2012-02-24 Revised:2012-07-13 Online:2013-04-25 Published:2013-04-25

摘要/Abstract

摘要： 以大豆油为原料制备多元醇,代替传统的聚醚多元醇,合成木材用单组分室温湿固化型植物油基异氰酸酯胶黏剂。使用FTIR、TG和DTG对胶黏剂的结构和热稳定进行分析,讨论大豆油基多元醇的羟值、用量和NCO/OH比例对胶黏剂贮存期、胶接强度和热稳定性等性能的影响。结果表明: 当羟值为69 mgKOH ·g^-1、SOP/PEG摩尔比为20%、R=7、固含量为80%时,制备的异氰酸酯胶黏剂最终CPS达到21.06 MPa,贮存期大于3个月,湿循环CPS达到12.04 MPa,比PEG/PAPI体系提高26.01%,热稳定也有显著提高。

关键词: 大豆油基多元醇, 异氰酸酯胶黏剂, 木材胶接, 热稳定性, 耐水性

Abstract: One-component isocyanate adhesive with moisture curing at room temperature has been prepared from polyols derived from soybean oil which is in order to substitute for traditional polyether polyols, their structures and thermal stability were assessed by FTIR, TG and DTG. It studied the effect of hydroxyl value, dosage and NCO/OH molar ratio on the pot life, bonding strength and thermo stability of adhesive. It indicated that, under the condition that the 69 mgKOH ·g^-1 hydroxyl value of soybean oil-based polyol, the 20%SOP/PEG molar ratio, the 7 R value and the 80% solid content, the final CPS of isocyanate adhesive was 21.06 MPa, pot life was more than three months, Wet circulation strength was 12.04 MPa which was higher 26.01% than that of PEG/PAPI system, and the adhesive had a higher thermal stability.

Key words: soybean oil-based polyol, isocyanate adhesive, wood bonding, thermal stability, water resistance

中图分类号:

TQ433.43

张亚东;顾继友;郑志锋;黄元波. 木材用大豆油基异氰酸酯胶黏剂的制备与表征[J]. 林业科学, 2013, 49(4): 110-116.

Zhang Yadong;Gu Jiyou;Zheng Zhifeng;Huang Yuanbo. Preparation and Characterization of Isocyanate Adhesive Based on Soybean Oil for Wood Bonding[J]. Scientia Silvae Sinicae, 2013, 49(4): 110-116.

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木材用大豆油基异氰酸酯胶黏剂的制备与表征

Preparation and Characterization of Isocyanate Adhesive Based on Soybean Oil for Wood Bonding

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