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Biomass-based adhesive filler, adhesive, plywood, and preparation method and application

A technology based on adhesive and biomass, used in adhesive additives, adhesives, polymer adhesive additives, etc., can solve the problems of high formaldehyde emission, low plywood strength, threat to human health, etc., and reduce formaldehyde emission. Quantity, low cost, and improved bonding strength

Active Publication Date: 2021-11-19
SHANGHAI CHANGFA NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome that the filler of the adhesive in the prior art mainly uses starch as a raw material, which has high cost, and when the adhesive containing phenolic resin or urea-formaldehyde resin is used to prepare plywood, the amount of formaldehyde released is high. , threaten human health, and the strength of plywood is low and other defects to provide a biomass-based adhesive filler, adhesive, plywood, preparation method and application

Method used

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  • Biomass-based adhesive filler, adhesive, plywood, and preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] 1. Preparation of biomass-based adhesive filler

[0048] (1) 30 parts of biological extracts and 50 parts of montmorillonite were uniformly mixed in a mixer, the mixing speed was 150rpm, and the mixing time was 10min to obtain material A;

[0049] (2) Mix 5 parts of calcium carbonate, 5 parts of sodium carboxymethyl cellulose and 0.5 part of guar gum in another mixer, the mixing speed is 150 rpm, and the mixing time is 10 min to obtain material B;

[0050] (3) Material A and material B were mixed for 5 minutes at a rotational speed of 80 rpm, and finally a biomass-based adhesive filler was obtained.

[0051] 2. Preparation of phenolic resin adhesive

[0052] Mix 27 parts of the biomass-based adhesive filler prepared above with 100% phenolic resin, the mixing speed is 120 rpm, and the mixing time is 5 minutes to prepare the phenolic resin-containing adhesive.

[0053] 3. Preparation of urea-formaldehyde resin adhesive

[0054] Mix 27 parts of the biomass-based adhesive ...

Embodiment 2

[0056] 1. Preparation of biomass-based adhesive filler

[0057] (1) 40 parts of biological extracts and 30 parts of montmorillonite were uniformly mixed in a mixer, the mixing speed was 60 rpm, and the mixing time was 60 minutes to obtain material A;

[0058] (2) 7 parts of calcium carbonate, 8 parts of sodium carboxymethylcellulose and 1.5 parts of guar gum were mixed uniformly in another mixer, the mixing speed was 60 rpm, and the mixing time was 60 min to obtain material B;

[0059] (3) Material A and material B were mixed for 5 minutes at a rotational speed of 90 rpm, and finally a biomass-based adhesive filler was obtained.

[0060] 2. Preparation of phenolic resin adhesive

[0061] Mix 27 parts of the above-prepared biomass-based adhesive filler with 100% phenolic resin, the mixing speed is 100 rpm, and the mixing time is 6 minutes to prepare the phenolic resin-containing adhesive.

[0062] 3. Preparation of urea-formaldehyde resin adhesive

[0063] Mix 27 parts of th...

Embodiment 3

[0065] 1. Preparation of biomass-based adhesive filler

[0066] (1) 60 parts of biological extracts and 20 parts of montmorillonite were uniformly mixed in a mixer, the mixing speed was 100 rpm, and the mixing time was 40 minutes to obtain material A;

[0067] (2) 10 parts of calcium carbonate, 10 parts of sodium carboxymethyl cellulose and 3 parts of guar gum were mixed uniformly in another mixer, the mixing speed was 100 rpm, and the mixing time was 40 minutes to obtain material B;

[0068] (3) Material A and material B were mixed for 8 minutes at a rotational speed of 60 rpm, and finally a biomass-based adhesive filler was obtained.

[0069] 2. Preparation of phenolic resin adhesive

[0070] Mix 27 parts of the biomass-based adhesive filler prepared above with 100% phenolic resin, the mixing speed is 80 rpm, and the mixing time is 8 minutes to prepare the phenolic resin-containing adhesive.

[0071] 3. Preparation of urea-formaldehyde resin adhesive

[0072] Mix 27 parts...

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Abstract

The invention discloses a biomass-based adhesive filler, an adhesive, a plywood, a preparation method and an application. The raw material composition of the biomass-based adhesive filler includes the following components in parts by weight: 30-60 parts of biological extract, 20-50 parts of montmorillonite, 5-10 parts of calcium carbonate, 5-10 parts of carboxymethyl Sodium cellulose and 0.5-3 parts of guar gum; wherein, the biological extract is the waste produced in the process of caustic soda pulping or kraft pulping. In the process of preparing plywood with the adhesive containing the biomass-based adhesive filler of the present invention, the amount of formaldehyde released can be reduced, and the strength of the prepared plywood is high; and in the glue coating process, the adhesive can be effectively avoided. The occurrence of even phenomenon is suitable for industrial production.

Description

technical field [0001] The invention specifically relates to a biomass-based adhesive filler, adhesive, plywood, preparation method and application. Background technique [0002] Urea-formaldehyde glue and phenolic glue have become the most widely used wood adhesives because of their low manufacturing cost and low price. According to the 2019 plywood industry report, the use of urea-formaldehyde glue for the wood-based panel industry in 2018 was 14.91 million tons, and the use of phenolic glue was 1.49 million tons, a total of about 15.4 million tons. The huge amount of adhesive used also leads to a large amount of filler in the adhesive. Calculated based on the addition of 25% of the mass percentage of filler in the adhesive, the amount of filler used is about 3.85 million tons. Most of the additives in the filler are industrial flour. Under the current national conditions of food shortage, the use of industrial flour must be reduced. In addition, the wet strength of phen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J11/04C09J11/08C09J11/00C09J161/06C09J161/24B27D1/08
CPCB27D1/08C08K2003/265C08K2201/005C08L2205/03C09J11/00C09J11/04C09J11/08C09J161/06C09J161/24C08L1/284C08L5/00C08K11/005C08K3/346C08K3/26C08L1/286
Inventor 施晓旦孙海强金霞朝
Owner SHANGHAI CHANGFA NEW MATERIAL CO LTD
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