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Protein-based wood adhesive and preparation method thereof

A wood adhesive and protein-based technology, applied in the chemical industry, can solve the problems of not exceeding 24 hours, excessive formaldehyde content, and health hazards, and achieve the effects of fast preparation speed, stable product quality, and prevention of reproduction

Inactive Publication Date: 2012-10-10
马晓平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Formaldehyde will be released during the production and use of trialdehyde glue, and the finished wood-based panels processed by trialdehyde glue will also release formaldehyde. The release period of formaldehyde is 3 to 15 years, resulting in long-term excessive formaldehyde content in indoor air. , causing serious harm to human health
[0013] 3. Although a variety of commonly used food preservatives can be added to the solution of protein powder + starch + PAE, side effects will occur in large doses, and the prepared glue can not be stored for more than 24 hours in small doses
[0014] 4. PAE is an aqueous solution with a solid content of 12.5%, the transportation cost is high, and the shelf life is short

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Embodiment 1: A protein-based wood adhesive provided by the embodiment of the present invention is made of the following raw materials in parts by weight:

[0059] Water: 100

[0060] Protein-containing raw materials: 5 to 50

[0061] Polyamide Epichlorohydrin PAE 10~40

[0062] Modifier: 5~15

[0063] Acidity regulator: 1~15

[0064] Stabilizer: 0~15

[0065] Moisturizer: 0~10

[0066] Antifreeze: 0~10

[0067] Preservatives: 0.1~10

[0068] Mold inhibitor: 0~10

[0069] Enzyme inhibitor: 0~10

[0070] Filling: 0~10;

[0071] The crude protein content of the protein-containing raw materials mentioned therein is more than 10%;

[0072] The modifying agent described herein is one or a mixture of polyacrylamide, polyvinyl alcohol, polyvinyl acetate, borax, ammonium thiosulfate, urea, and isocyanate.

[0073] The protein-containing raw materials mentioned herein are bean defatted powder, soybean protein isolate, soybean protein concentrate, defatted soybean meal...

Embodiment 2

[0094] Embodiment 2: The protein-based wood adhesive and its preparation method provided by the embodiment of the present invention are basically the same, the difference is:

[0095] Put 100 parts by weight of tap water into a container with a stirrer, control the stirring rate to 50-200 rpm, add 6 parts by weight of cationic polyacrylamide (manufacturer model 1975) while stirring, and stir for 10-30 minutes. Stir evenly, then add 10 parts by weight of PAE and stir for 10-30 minutes, stir evenly, then add 1 part by weight of sodium carboxymethylcellulose and stir for 10-30 minutes, stir evenly, then add 10 parts by weight of urea and stir for 10-30 minutes, stir Evenly, then add 1 part by weight of borax and stir for 10-30 minutes, stir evenly, then add 1 part by weight of sodium benzoate and stir for 10-30 minutes, stir evenly, then add 35 parts by weight of defatted soybean meal crushed to more than 40 mesh, and keep stirring For about 20 to 60 minutes, make a slurry, keep ...

Embodiment 3

[0096] Embodiment 3: The protein-based wood adhesive and its preparation method provided by the embodiment of the present invention are basically the same, and the difference is:

[0097] Put 120 parts by weight of tap water into a container with a stirrer, control the stirring rate to 50-200 rpm, add 7 parts by weight of cationic polyacrylamide (manufacturer model 1975) while stirring, and stir for 10-30 Minutes, stir evenly, add 1 weight part of xanthan gum while stirring, stir for 10-30 minutes, stir evenly, add 1 weight part of borax while stirring, stir for 10-30 minutes, stir well, add 5 weight parts of glycerin while stirring Stir for 10-30 minutes, stir evenly, add 10 parts by weight of soybean protein isolate powder above 40 mesh and 20 parts by weight of defatted cottonseed meal powder while stirring, keep stirring for about 20-60 minutes, prepare a slurry, and then stir While adding 2 parts by weight of malic acid, keep stirring for about 5 to 20 minutes to fully diss...

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Abstract

The invention discloses a protein-based wood adhesive which is characterized by being made of the following raw materials in part by weight: 100 parts of water, 5 to 50 parts of protein-containing raw materials, 10 to 14 parts of polyamide epichiorobydrin (PAE), 5 to 15 parts of modifier, 1 to 15 parts of acidity regulator, 0 to 15 parts of stabilizer, 0 to 10 parts of humectant, 0 to 10 parts of anti-freeze, 0.1 to 10 parts of preservatives, 0 to 10 parts of mold inhibitor, 0 to 10 parts of enzyme inhibitor, and 0 to 10 parts of filling. The protein-containing raw materials contain over 10% of coarse protein, and the modifier is one of or a mixture of several of polyacrylamide, polyvinyl alcohol, polyvinyl acetate, borax, ammonium thiosulfate, carbamide and isocyanate. The invention also discloses a preparation method of the protein-based wood adhesive. The invention adopts common chemical materials and adopts a break-through normal-temperature material-mixing technique, which uses water as solvent. The adhesive has the advantages of high stickiness, evenness and convenience in adhesive application and stable product quality.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a high-efficiency and environment-friendly green protein-based wood adhesive and a preparation method thereof. Background technique [0002] At present, the adhesives used in the wood industry are still dominated by "trialdehyde glue" (urea-formaldehyde resin, phenolic resin, melamine-formaldehyde resin). However, aldehyde-based adhesives and their products will release formaldehyde during use. Formaldehyde has become one of the main indoor pollutants, seriously threatening people's physical and mental health. In addition, some raw materials of aldehyde-based adhesives come from non-renewable resources, so it is necessary to develop new adhesives when the resources are gradually exhausted. [0003] Protein glue is one of the oldest adhesives, but due to the different raw materials of protein, the produced protein glue is also very different. With the continuous advan...

Claims

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Application Information

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IPC IPC(8): C09J189/00C09J177/00C09J11/04C09J11/06C09J11/08
Inventor 马晓平
Owner 马晓平
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