热压胶接API主剂用复合变性玉米淀粉的性能

doi:10.11707/j.1001-7488.20080818

林业科学 ›› 2008, Vol. 44 ›› Issue (8): 100-104.doi: 10.11707/j.1001-7488.20080818

热压胶接API主剂用复合变性玉米淀粉的性能

时君友^1.2 涂怀刚² 王淑敏²

（1.东北林业大学哈尔滨 150040； 2.北华大学吉林 132013）

收稿日期:2007-01-09 修回日期:1900-01-01 出版日期:2008-08-25 发布日期:2008-08-25

Properties of Main Agent in API Adhesive by Composite Modified Corn Starch

Shi Junyou^1,2,Tu Huaigang²,Wang Shumin²

(1.Northeast Forestry University Harbin 150040；2Beihua University Jilin 132013)

Received:2007-01-09 Revised:1900-01-01 Online:2008-08-25 Published:2008-08-25

摘要/Abstract

摘要：

以玉米淀粉为原料，通过不同工艺路线制备ZJS1、ZJS2和ZJS3三种酯化交联型变性淀粉，以能满足API木材胶黏剂使用要求为目标，对其理化性质做对比分析。结果表明：不同的工艺路线制备的变性淀粉性质存在差异，ZJS1变性淀粉交联度最高，酯化取代度较小，在PVA水溶液中易于分散，成膜性较好，形成的糊液黏度热稳定性一般，但透明度差，容易凝沉，作为API主剂稳定性差；ZJS3变性淀粉交联度最低，酯化取代度最高，在PVA水溶液中不易分散，成膜性差，形成的糊液黏度热稳定性差，但透明度好，不易凝沉，作为API主剂主要成分，压制的杨木胶合板胶合强度不合格；ZJS2变性淀粉取代度最小，分散性、成膜性及稳定性优异，不易凝沉，形成的糊液热稳定性最好，作为API胶黏剂主剂工艺性好，胶合强度高，是理想的水性高分子异氰酸酯（API）胶主剂用变性淀粉。

关键词: 酯化, 交联, 玉米淀粉, API胶黏剂主剂

Abstract:

In this paper, ZJS1、ZJS2 and ZJS3 cross linking modified starch were prepared by different operational path. Their material was corn starch and they can meet target of operational requirement in API wood adhesive and their physical and chemical properties were analyzed by comparison. Results show that properties of modified starch prepared in different operational path are different. ZJS1 modified starch degree of cross linking is the highest and degree of ester substitute is smaller. It is apt to disperse in PVA water solution and film forming property is good and hot stability of paste starch is common. But its degree of transparency is poor and is retrogradation easily and its stability as main agent of API is poor. ZJS3 modified starch degree of cross linking is the lowest and its degree of ester substitute is the highest. It is hard to disperse in PVA solution and hot stability of its paste viscosity is poor.But its degree of transparency is good and is retrogradation difficulty as primary ingredient in main agent of API. Bonding strength of poplar plywood pressed by ZJS 3 is disqualification. ZJS 2 modified starch degree of ester substitute is the smallest. Dispersedness and filmforming and stability are excellent. It is not prone to retrogradation and hot stability is the best. Its technology is good and bonding strength is high when it is used as main agent of API adhesive. So it is perfect modified starch used in main agent of API.

Key words: ester, cross linking, corn starch, main agent of API adhesive

时君友. 涂怀刚王淑敏. 热压胶接API主剂用复合变性玉米淀粉的性能[J]. 林业科学, 2008, 44(8): 100-104.

Shi Junyou;Tu Huaigang;Wang Shumin. Properties of Main Agent in API Adhesive by Composite Modified Corn Starch[J]. Scientia Silvae Sinicae, 2008, 44(8): 100-104.

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热压胶接API主剂用复合变性玉米淀粉的性能

Properties of Main Agent in API Adhesive by Composite Modified Corn Starch

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