Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of modified soybean-based adhesive

A soybean-based glue technology, applied in the field of wood adhesives, can solve the problems of small application range, non-adjustable solid content, inability to adjust viscosity and coating thickness, etc., to achieve improved anti-corrosion performance, no formaldehyde, and a wide range of applications Effect

Pending Publication Date: 2020-09-11
宁波朝露新材料科技有限公司
View PDF3 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the solid content of soybean-based adhesive products cannot be adjusted, so the viscosity and coating thickness cannot be adjusted during use, and the application range is small

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of modified soybean-based adhesive
  • Preparation method of modified soybean-based adhesive
  • Preparation method of modified soybean-based adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A preparation method of a modified soybean-based adhesive, comprising defatted soybean powder, mixed with water, the specific steps are as follows:

[0026] Step 1: Add 1.03kg of liquid component diethylenetriamine into the reactor and stir, then add 1.46kg of powder component adipic acid at one time to cause amidation reaction, and then slowly heat the reactor to 190°C , the water generated by the reaction during this process was removed, and after the water was removed, it was kept at 190°C for 6h, then cooled to 75°C, slowly added with water, and stirred to obtain a reaction mother liquor. The amount of water can be added according to the specific addition amount of diethylenetriamine and adipic acid.

[0027] Step 2: Add 0.96 kg of epichlorohydrin to the reaction mother liquor, continue stirring to raise the temperature to 50° C., add water in stages to adjust the viscosity of the reaction mother liquor, and stop the reaction after the viscosity reaches 25 mPa.s.

...

Embodiment 2

[0036] A preparation method of a modified soybean-based adhesive, comprising defatted soybean powder, mixed with water, the specific steps are as follows:

[0037] Step 1: Add 1.03kg of liquid component diethylenetriamine into the reactor for stirring, then add 1.46kg of powder component adipic acid at one time to undergo amidation reaction, and then slowly heat the reactor to 190°C, The water produced by the reaction during this process will be removed. After the water is removed, keep the reaction at 190°C for 6h, then cool to 75°C, add water slowly, and stir to obtain the reaction mother liquor. The amount of water can be added according to the specific addition amount of diethylenetriamine and adipic acid.

[0038] Step 2: Add 0.96 kg of epichlorohydrin to the reaction mother liquid, continue stirring to raise the temperature to 50° C., add water in stages to adjust the viscosity of the reaction mother liquid, and stop the reaction after the viscosity reaches 25 mPa.s.

...

Embodiment 3

[0048]Step 1: Add 1.03kg of liquid component diethylenetriamine into the reactor for stirring, then add 1.46kg of powder component adipic acid at one time to undergo amidation reaction, and then slowly heat the reactor to 190°C, The moisture generated during the reaction was removed. After the moisture was removed, react at 190° C. for 6 h, then cool to 75° C., add water slowly, and stir at 60° C. to obtain a reaction mother liquor. The amount of water can be added according to the specific addition amount of diethylenetriamine and adipic acid.

[0049] Step 2: Add 0.96kg of epichlorohydrin to the reaction mother liquor. At this time, the molar ratio of diethylenetriamine: adipic acid: epichlorohydrin is 1:1:1.05. Continue to stir and heat up, react, and add water several times to adjust the reaction The viscosity of the mother liquor can reach 25-100mPa.s after adjustment.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
viscosityaaaaaaaaaa
viscosityaaaaaaaaaa
viscosityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of a modified soybean-based adhesive, and the method comprises the following steps: slowly heating diethylenetriamine and adipic acid in a molar ratio of 1: 1 to 190 DEG C, carrying out amidation reaction, and keeping the reaction at 190 DEG C for 6-11 hours until the moisture generated in the reaction is removed, thereby obtaining a reaction mother solution; adding epoxy chloropropane into the reaction mother liquor according to a molar ratio of epoxy chloropropane to diethylenetriamine of (1.05-1.2): 1, continuously stirring, heating to 50-90 DEGC, adjusting the viscosity value to 25-100mPa. S, and stopping the reaction; adjusting the pH value to obtain a modifier, and adding defatted bean flour into the modifier to obtain the soybean-based adhesive. The solid content of the prepared soybean-based adhesive is adjustable, the viscosity of the adhesive and the thickness of a coating can be adjusted in use, and the application range is wide.

Description

technical field [0001] The invention relates to the field of wood adhesives, in particular to a preparation method of a modified soybean-based adhesive capable of adjusting the solid content of the soybean-based adhesive. Background technique [0002] Adhesives used in my country's wood industry are mainly "trialdehyde glue" (urea-formaldehyde glue, phenolic glue, melamine-formaldehyde glue). The raw materials of "trialdehyde glue" come from petroleum and other chemical products, and the resources are limited and non-renewable. Moreover, "trialdehyde glue" products will release formaldehyde during production and use. Long-term exposure to low-concentration formaldehyde can cause headaches, dizziness, respiratory dysfunction and liver toxicity. The health of industrial workers and consumers. In order to deal with the hazards of formaldehyde and realize the effective utilization of biomass resources, there have been reports on the use of renewable protein resources to make wo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08H1/00C09J189/00
CPCC08H1/00C09J189/00
Inventor 陈涛徐益忠
Owner 宁波朝露新材料科技有限公司