Soy protein adhesive and preparation method thereof

A technology of soybean protein and soybean protein powder, which is applied in the field of wood adhesives, can solve the problems of poor water resistance, low bonding strength, and violation of the development purpose of green environmental protection, etc., to avoid softening of the adhesive, good adhesiveness, and increase surface hydrophobicity Effect

Active Publication Date: 2019-01-11
南京泓莉沃材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, soybean protein adhesives, which were previously replaced by formaldehyde-based adhesives due to their low bonding strength and poor water resistance, have received renewed attention.
But low bonding strength and poor water resistance are still the main problems to be solved
The current solution is mainly to use synthetic resin copolymerization or blending to improve its water resistance, but it will lead to the presence of volatile toxic compounds in soybean protein adhesives, which violates the development purpose of green environmental protection

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1 The preparation of soybean protein adhesive

[0019] Step 1. Weigh 20 parts of soybean protein powder and 4 parts of sodium dodecylsulfonate, add soybean protein powder and sodium dodecylsulfonate to 100 parts of water, stir evenly, heat to 80°C, ultrasonic power 500W, Ultrasound for 15 minutes to obtain a soybean protein emulsion. The soybean protein emulsion was concentrated under reduced pressure to make a paste with a solid content of 90%. The paste was naturally cooled to room temperature and then sent to a freeze dryer. into soybean protein powder;

[0020] Step 2. Weigh 3 parts of graphene, 3 parts of manganese dioxide and 1.2 parts of sodium dodecylsulfonate and add them to 30 parts of water, heat to 50°C, stir evenly, after cooling down to room temperature, suction filter, put into blast drying Drying in the box makes a mixture of hydrophobic graphene and hydrophobic manganese dioxide;

[0021] Step 3. Weigh 5 parts of calcium sulfate and 5 parts...

Embodiment 2

[0022] Embodiment 2 The preparation of soybean protein adhesive

[0023] Step 1. Weigh 30 parts of soybean protein powder and 6 parts of sodium dodecylsulfonate, add soybean protein powder and sodium dodecylsulfonate to 150 parts of water, stir evenly, heat to 85°C, ultrasonic power 550W, Ultrasound for 20 minutes to obtain a soybean protein emulsion. The soybean protein emulsion was concentrated under reduced pressure to make a paste with a solid content of 88%. The paste was naturally cooled to room temperature and then sent to a freeze dryer. into soybean protein powder;

[0024] Step 2. Weigh 4 parts of graphene, 3 parts of manganese dioxide and 1.4 parts of sodium dodecylsulfonate into 35 parts of water, heat to 55°C, stir evenly, after cooling down to room temperature, suction filter, put into blast drying Drying in the box makes a mixture of hydrophobic graphene and hydrophobic manganese dioxide;

[0025] Step 3. Weigh 6 parts of calcium sulfate and 7 parts of urea an...

Embodiment 3

[0026] Embodiment 3 The preparation of soybean protein adhesive

[0027] Step 1. Weigh 35 parts of soybean protein powder and 7 parts of sodium dodecylsulfonate, add soybean protein powder and sodium dodecylsulfonate to 180 parts of water, stir evenly, heat to 80°C, ultrasonic power 600W, Ultrasound for 25 minutes to obtain a soybean protein emulsion. The soybean protein emulsion was concentrated under reduced pressure to make a paste with a solid content of 85%. The paste was naturally cooled to room temperature and then sent to a freeze dryer. into soybean protein powder;

[0028] Step 2: Weigh 4 parts of graphene, 4 parts of manganese dioxide and 1.6 parts of sodium dodecylsulfonate and add them to 40 parts of water, heat to 50°C, stir evenly, after cooling down to room temperature, suction filter, put into blast drying Drying in the box makes a mixture of hydrophobic graphene and hydrophobic manganese dioxide;

[0029] Step 3. Weigh 8 parts of calcium sulfate and 10 part...

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PUM

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Abstract

The invention discloses a soy protein adhesive which comprises the following raw materials in parts by weight: 20-50 parts of soy protein powder, 200-600 parts of water, 5-15 parts of urea, 5-10 partsof calcium sulfate, 3-5 parts of graphene, 3-5 parts of manganese dioxide and 5-15 parts of an anionic surfactant. The invention further provides a preparation method of the soy protein adhesive. According to the method, by virtue of hydrophobic modification, high-temperature treatment, ultrasonic treatment and the like of the soy protein powder, an enhancer is added, so that the prepared soy protein adhesive is excellent in water resistance and high in bonding strength. Therefore, the quality of plywood is ensured.

Description

technical field [0001] The invention relates to the technical field of wood adhesives, in particular to a soybean protein adhesive and a preparation method thereof. Background technique [0002] Wood adhesive is one of the main raw materials in the wood industry, which determines the quality and price of wood processed products. At present, formaldehyde-based adhesives still dominate the wood adhesives. However, the formaldehyde volatilized from formaldehyde-based adhesives pollutes the environment and endangers health. Long-term inhalation of a small amount of formaldehyde can cause chronic poisoning, mucosal hyperemia, skin irritation, allergic dermatitis, nail keratosis and fragility, nail bed fingertip pain, general pain, fatigue, poor appetite, palpitations, insomnia, weight loss and Autonomic disorders and other symptoms. And the raw materials of many formaldehyde-based adhesives also depend on petrochemical products, which seriously restricts the development of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J189/00C09J11/04C09J11/06
CPCC08K2003/2262C08K2003/3045C09J11/04C09J11/06C09J189/00C08K13/06C08K9/04C08K3/042C08K3/22C08K5/21C08K3/30
Inventor 杨光
Owner 南京泓莉沃材料科技有限公司
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