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A kind of formaldehyde-free adhesive and preparation method thereof

A technology of adhesive and viscosity reducer, which is applied in the field of formaldehyde-free adhesive and its preparation, can solve the problems of formaldehyde pollution, achieve the effects of saving production costs, meeting water resistance requirements, and ensuring practical performance

Inactive Publication Date: 2018-12-18
BEIJING FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the above problems, the present invention designs a formaldehyde-free adhesive and a preparation method thereof, which can meet the water resistance requirements of the adhesive for wood-based panels and ensure the practical performance of the protein adhesive; completely solve the formaldehyde in the indoor air caused by the wood-based panels Pollution issues; the main raw materials are renewable resources, in line with the principles of environmental protection and sustainable development

Method used

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  • A kind of formaldehyde-free adhesive and preparation method thereof
  • A kind of formaldehyde-free adhesive and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0038] This embodiment provides an adhesive for wood-based panels, and the adhesive is prepared according to the following weight ratio:

[0039] Demineralized water 73 kg

[0040] Defatted Soy Protein Powder 27 kg

[0041] Denaturant 1.0kg

[0042] Viscosity reducer 0.001kg

[0043] Emulsifier 0.5kg

[0044] Enhancer 7kg

[0045]Among them, the protein content of defatted soybean protein powder is more than 43% (purchased from Huifu Grain and Oil Co., Ltd.); the denaturant is commercially available common guanidine hydrochloride, the viscosity reducer is papain, and the emulsifier is polyvinyl alcohol (purchased from Beijing Chemical Reagent Co., Ltd. Co., Ltd., content 99%); the enhancer is self-made oxidized tannin (solid content 60%, viscosity 1800mPa.s).

[0046] This embodiment provides the preparation method of above-mentioned adhesive simultaneously, and specific preparation steps are as follows:

[0047] 1) In a mixer equipped with a stirrer, add all the deminer...

Embodiment 2

[0052] This embodiment provides an adhesive for wood-based panels, and the adhesive is prepared according to the following weight ratio

[0053] Tap water 71 kg

[0054] Defatted Soy Protein Powder 29 kg

[0055] Denaturant 1.5kg

[0056] Viscosity reducer 0.002kg

[0057] Emulsifier 1.0kg

[0058] Enhancer 12kg

[0059] Among them, the protein content of defatted soybean protein powder is more than 43% (purchased from Huifu Grain and Oil Co., Ltd.); the denaturant is commercially available urea, the viscosity reducing agent is bromelain, and the emulsifier is polyacrylamide (purchased from Beijing Chemical Reagent Co., Ltd. , content 99%); the enhancer is self-made oxidized tannin (solid content 60%, viscosity 1800mPa.s).

[0060] The preparation method of the adhesive described in this example is the same as in Example 1, and the performance and quality indicators of the obtained adhesive are shown in Table 1.

Embodiment 3

[0062] This embodiment provides an adhesive for wood-based panels, and the adhesive is prepared according to the following weight ratio:

[0063] Demineralized water 69 kg

[0064] Defatted Peanut Protein Powder 31 kg

[0065] Denaturant 1.0kg

[0066] Viscosity reducer 0.002kg

[0067] Emulsifier 1.5kg

[0068] Enhancer 18kg

[0069] Among them, the protein content of defatted soybean protein powder is more than 43% (purchased from Huifu Grain and Oil Co., Ltd.); the denaturant is commercially available urea, the viscosity reducing agent is neutral protease, and the emulsifier is polyetherimide (purchased from Beijing Chemical Industry Co., Ltd. Reagent Co., Ltd., content 99%); enhancer is self-made oxidized tannin (solid content 60%, viscosity 1800mPa.s).

[0070] The preparation method of the adhesive described in this example is the same as in Example 1, and the performance and quality indicators of the obtained adhesive are shown in Table 1.

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Abstract

The invention discloses a soybean aldehyde-free adhesive and a preparation method thereof. The soybean aldehyde-free adhesive is prepared from 27-33 parts of degreased protein powder, 1-2 parts of denaturing agent, 0.001-0.003 part of viscosity reducer, 0.5-2.0 parts of emulsifying agent, 7-20 parts of reinforcing agent and 65-73 parts of dispersion medium. The preparation method comprises the steps of dispersion, mixing, heating, stirring and the like. The soybean aldehyde-free adhesive has the advantages that the water-tolerant requirements for the adhesive for artificial boards can be met, the practical performance of the protein adhesive is ensured, and the problem of formaldehyde pollution caused by the artificial boards to indoor air is thoroughly solved; the main raw materials are renewable resources, and the adhesive is in conformity with the principle of environmental protection and sustainable development.

Description

technical field [0001] The invention relates to an adhesive and a preparation method thereof, in particular to an formaldehyde-free adhesive and a preparation method thereof, belonging to the field of adhesives and the preparation thereof. Background technique [0002] With the improvement of people's living standards and the continuous and stable development of construction, decoration, packaging and other industries, the output of wood-based panels in my country has grown rapidly. In 2014, the total output of wood-based panels in my country was 302 million m 3 , accounting for more than 50% of the world's total output. Among them, the particle board is 17 million m 3 , a year-on-year increase of 13%; fiberboard 0.69 billion m 3 , a year-on-year increase of 16%; plywood 174 million m 3 , an increase of 7% year-on-year. The total output of wood-based panels, plywood, furniture, and wood flooring has ranked first in the world for many years in a row. [0003] The adhesi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J189/00C09J11/06C09J11/08
CPCC09J11/06C09J11/08C09J189/00C08L29/04C08L33/26C08L79/08
Inventor 高强罗晶李建章陈惠张伟
Owner BEIJING FORESTRY UNIVERSITY