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A soybean protein adhesive based on nano-esterified cellulose slurry and its preparation method

A technology for esterifying cellulose and soybean protein, which is applied in the preparation of cellulose adhesives, protein adhesives, animal glue or gelatin, etc., which can solve the problems of reducing quantum size effect, consuming large energy, and enhancing adhesive strength To achieve the effects of increasing stability and wet strength, reducing energy consumption, improving compatibility and bonding strength, etc.

Active Publication Date: 2017-11-10
CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the preparation process of the soybean protein adhesive, the previously prepared microcrystalline nanocellulose powder is used as a raw material. On the one hand, in the preparation process of nanocellulose, the nanocellulose slurry is generally obtained first, which contains a large amount of solvent. , and the process of concentrating and drying it needs to consume a lot of energy; on the other hand, the drying process of using plant fibers to prepare microcrystalline nanocellulose has a greater impact on the morphology and properties of nanofibers, causing its quantum size effect The reduction of the soy protein adhesive has a limited effect on the enhancement of the adhesive strength

Method used

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  • A soybean protein adhesive based on nano-esterified cellulose slurry and its preparation method

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Embodiment 1

[0033] A kind of soybean protein adhesive that takes nano-esterified cellulose slurry as a parent of the present invention, in parts by weight, includes the raw materials of the following components: 100 grams of nano-esterified cellulose slurry with an esterification rate of 5% (solid content is 10%), 5 grams of soybean protein isolate, 1 gram of esterifying agent acetic anhydride, 0.5 gram of surfactant sodium lauryl sulfate, 0.5 gram of sodium tripolyphosphate, 0.5 gram of urea, 0.1 gram of butyl borate, 1 grams of emulsified paraffin.

[0034] The preparation method of the soybean protein adhesive based on the nano-esterified cellulose slurry of the present embodiment comprises the following steps:

[0035] (1) Weigh 100 grams of pulp, add mass fraction of 1% sodium hydroxide for pretreatment, and simultaneously ball mill in a ball mill with a rotating speed of 400rpm (25 balls, alternate running time 5min) for 1h, then add 2 1 gram of acetic anhydride continued to grind ...

Embodiment 2

[0040] A kind of soybean protein adhesive taking nano-esterified cellulose slurry as a parent of the present invention, in parts by weight, includes the raw materials of the following components: 100 grams of esterification rate 10% nano-esterified cellulose slurry (solid content 10%), 10 grams of soybean protein isolate, 2 grams of esterifying agent acetic anhydride, 0.5 grams of surfactant sodium lauryl sulfate, 1 gram of sodium tripolyphosphate, 1 gram of urea, 0.1 gram of butyl borate, 1 gram emulsified paraffin.

[0041] The preparation method of the soybean protein adhesive based on the nano-esterified cellulose slurry of the present embodiment comprises the following steps:

[0042] (1) Weigh 100 grams of pulp, add mass fraction of 2% sodium hydroxide for pretreatment, and at the same time ball mill in a ball mill with a rotating speed of 500rpm (25 balls, alternate running time 5min) for 1.5h, then add Continue to grind 4 grams of acetic anhydride for 0.5h, and finall...

Embodiment 3

[0047] A kind of soybean protein adhesive taking nano-esterified cellulose slurry as a parent of the present invention, in parts by weight, includes the raw materials of the following components: 100 grams of nano-esterified cellulose slurry with a 15% esterified cellulose (solid content of 10%), 15 grams of soybean protein isolate, 3 grams of esterifying agent succinic anhydride, 0.5 gram of surfactant sodium dodecyl sulfonate, 2 grams of sodium tripolyphosphate, 2 grams of urea, 0.1 gram of butyl borate, 1 g of emulsified paraffin.

[0048] The preparation method of the soybean protein adhesive based on the nano-esterified cellulose slurry of the present embodiment comprises the following steps:

[0049] (1) Weigh 100 grams of pulp, add mass fraction of 3% sodium hydroxide for pretreatment, and simultaneously ball mill in a ball mill with a rotating speed of 600rpm (25 balls, alternate running time 5min) for 2h, then add 5 Continue to grind 1 gram of succinic anhydride for ...

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Abstract

The invention discloses a soybean protein adhesive with nano esterified cellulose slurry as a matrix. The adhesive is prepared from, by weight, 100 parts of nano esterified cellulose slurry with the esterification rate being 5-20%, 5-20 parts of isolated soybean protein, 1-5 parts of an esterification agent, 0.1-1.0 part of surfactant, 0.5-2 parts of sodium tripolyphosphate, 0.5-2 parts of urea, 0.1-0.5 part of an anti-corrosion agent and 0.5-1 part of an emulsifying agent. A preparation method includes the steps that the nano esterified cellulose slurry with the esterification rate being 5-20% is prepared first, then the isolated soybean protein and the esterification agent are added into the nano esterified cellulose slurry in batches and are evenly stirred, other auxiliaries are added and evenly stirred, and the soybean protein adhesive is obtained. The soybean protein adhesive is high in bonding strength and good in water resistance. The preparation method greatly reduces energy consumption, reduces labor intensity, efficiently saves resources and reduces pollution.

Description

technical field [0001] The invention relates to a soybean protein adhesive and a preparation method thereof, in particular to a soybean protein adhesive with nano-esterified cellulose slurry as a matrix and a preparation method thereof. Background technique [0002] In recent years, the demand for wood-based panels has increased year by year, and at this stage the most used adhesives for wood-based panels are trialdehyde glues, namely urea-formaldehyde glue, phenolic glue and melamine-formaldehyde glue. At the same time, problems such as air, waste and water pollution may also exist in the processing process, which poses a serious threat to the environment and human health. In recent years, the use of soybean protein glue, a green and environmentally friendly adhesive, has solved the problems of shortage of petroleum resources and environmental pollution, and has gradually been valued and promoted. Soybean protein glue is a bio-based and environmentally friendly adhesive ob...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J101/12C09J101/10C09J189/00C09J11/08C09J11/04
CPCC08L2205/03C09J11/04C09J11/08C09J101/10C09J101/12C08L89/00C08K2003/324
Inventor 黄自知胡云楚袁利萍冯斯宇卿彦吴义强
Owner CENTRAL SOUTH UNIVERSITY OF FORESTRY AND TECHNOLOGY