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Natural fermentation adhesive and preparation method thereof

A natural fermentation and adhesive technology, applied in the field of wood adhesives, can solve the problems of low content of active functional groups, and achieve the effects of good environmental performance, good water resistance, and high carboxyl content

Active Publication Date: 2019-05-31
FUJIAN AGRI & FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The two patents did not use green methods such as microorganisms for further treatment, and the content of active functional groups in the adhesive components was low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The raw materials of the natural fermentation adhesive include the following components in parts by weight: 200 parts of protein material, 35 parts of acid, 45 parts of alkali, 0.5 part of salt, 0.4 part of vitamin, and 1000 parts of water.

[0028] The protein raw material is defatted soybean meal.

[0029] The acid is citric acid.

[0030] The base is sodium hydroxide.

[0031] The salt is manganese chloride.

[0032] The vitamins are 0.1 parts each of vitamins B1, B2, B4 and B6.

[0033] Water is tap water.

[0034] The preparation method of described a kind of naturally fermented adhesive comprises the following steps:

[0035] 1. Mix the protein material with water, and stir at 200 rpm for 20 minutes at 35°C;

[0036] 2. Add salt and continue to heat and stir for 20 minutes;

[0037] 3. Adjust the pH to 0.5 with acid, and keep stirring at 25°C for 30 minutes;

[0038] 4. At 25°C, adjust the pH to 5.0 with alkali and stir for 20 minutes;

[0039] 5. At 25°C,...

Embodiment 2

[0044] The raw materials of the natural fermentation adhesive include the following components in parts by weight: 300 parts of protein material, 40 parts of acid, 60 parts of alkali, 1 part of salt, 0.5 part of vitamin, and 2200 parts of water.

[0045] The protein raw material is soybean protein isolate.

[0046] The acid is one or a mixture of citric acid, acetic acid, hydrochloric acid, sulfuric acid, and oxalic acid.

[0047] The base is ammonia water.

[0048] The salt is calcium phosphate.

[0049] The vitamins are 0.1 parts each of vitamin B1, B2, B4, and B6 and 0.1 part of vitamin H.

[0050] Water is tap water.

[0051] The preparation method of described a kind of naturally fermented adhesive comprises the following steps:

[0052] 1. Mix the protein material with water, and stir at 200 rpm for 20 minutes at 35°C;

[0053] 2. Add salt and continue to heat and stir for 20 minutes;

[0054] 3. Adjust the pH to 2.0 with acid, and keep stirring at 40°C for 30 minu...

Embodiment 3

[0061] The raw materials of the natural fermentation adhesive include the following components in parts by weight: 1000 parts of protein material, 150 parts of acid, 180 parts of alkali, 6 parts of salt, 0.6 part of vitamin and 5000 parts of water.

[0062] The protein raw material is blood meal.

[0063] The acid is acetic acid.

[0064] The base is sodium hydroxide.

[0065] The salt is calcium chloride.

[0066] The vitamins are 0.2 parts each of vitamins B1, B2 and B4.

[0067] Water is deionized water.

[0068] The preparation method of described a kind of naturally fermented adhesive comprises the following steps:

[0069] 1. Mix the protein material with water, and stir at 200 rpm for 20 minutes at 35°C;

[0070] 2. Add salt and continue to heat and stir for 20 minutes;

[0071] 3. Adjust the pH to 1.0 with acid, and keep stirring at 30°C for 30 minutes;

[0072] 4. At 25°C, adjust the pH to 5.5 with alkali, and stir for 20 minutes;

[0073] 5. At 25°C, add vitami...

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Abstract

The invention belongs to the technical field of wood adhesives, in particular to a natural fermentation adhesive and a preparation method thereof. The natural fermentation adhesive comprises the following components in parts by weight: 200-1000 parts of protein raw materials, 35-150 parts of acid, 45-180 parts of alkali, 0.5-6 parts of salt, 0.1-0.6 parts of vitamins and 1000-5000 parts of water.The preparation method includes mixing the protein raw materials with water, and stirring; adding the salt, and continuously keeping the temperature and stirring; adjusting the pH value with acid andalkali; adding the vitamins; and fermenting in a pressure-resistant container at 25 DEG C, releasing pressure to obtain a natural fermentation adhesive. The adhesive does not release toxic and harmfulsubstances such as formaldehyde and has good environmental protection performance; glue can be applied by roll coating or spray coating; the adhesive has multiple active functional groups, especiallycarboxyl groups with high content and good water resistance after curing; and the bonding strength of 3 layers of masson pine glued boards pressed at 160 DEG C, 1 min / mm and 1.0 MPa can meet the requirements of class II glued boards in GB / T9846-2014.

Description

technical field [0001] The invention belongs to the technical field of wood adhesives, in particular to a naturally fermented adhesive and a preparation method thereof. Background technique [0002] Adhesives are widely used in various industries and are closely related to people's daily life; among them, the wood industry consumes the largest amount of adhesives, accounting for about 67% of the total output of adhesives; while urea-formaldehyde resin, melamine-formaldehyde resin, The consumption of aldehyde-based adhesives represented by melamine-modified urea-formaldehyde resins and phenolic resins accounts for about 80% of the consumption of adhesives in the wood industry. However, aldehyde-based adhesives tend to release toxic and harmful gases such as formaldehyde during production and use, which not only pollutes the environment, but also endangers human health. At present, it has become a development trend to use vegetable protein adhesives with renewable raw materia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J189/00
Inventor 陈奶荣殷豪张二兵彭志翔陈麦全程生媛林巧佳饶久平曾钦志范毜仔
Owner FUJIAN AGRI & FORESTRY UNIV
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