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Formaldehyde-free wood adhesive film

A wood glue and mucous membrane technology, applied in the direction of adhesives, film/flake adhesives, etc., can solve the problems of inability to form large-scale production, inability to achieve zero formaldehyde release, inconvenient transportation and storage, and eliminate pollution sources, Cost-effective, the effect of improving the construction environment

Inactive Publication Date: 2013-12-25
杨学荣
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the former cannot achieve zero formaldehyde free, the latter is difficult to promote due to various factors, and cannot form large-scale production
Furthermore, because most of the "trialdehyde glue" and other glue types are solvent-based and emulsion-based, there are disadvantages such as inconvenient transportation and storage, restricted by curing conditions, and short shelf life.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0022] 50 parts of chlorinated polyethylene, 50 parts of ethylene-vinyl acetate copolymer, 8 parts of modified rosin, 15 parts of peanut shell powder (industrial), 15 parts of wood flour (industrial), 5 parts of flour, 6 parts of maleic anhydride, 3 parts of atactic polypropylene, 2.5 parts of dicumyl peroxide, 3 parts of barium zinc stabilizer BZ-6503, 2.5 parts of zinc oxide, 1.5 parts of stearic acid.

[0023] Put the above base materials, fillers, and compounding agents in sequence on the experimental open mill for mixing, and after the mixing is sufficient, pull out the film and cool it. Lay the adhesive film between the wood veneers before the press board test; press conditions: pressure 1.6MPa, temperature 150°C-160°C, hot press 6 minutes, cold press (room temperature) 6 minutes. Test strength ≥ 1.0MPa.

Embodiment 2

[0025] 35 parts of chlorinated polyethylene, 5 parts of linear polyethylene, 60 parts of ethylene-vinyl acetate copolymer, 5 parts of modified rosin, 4 parts of polyethylene wax, 25 parts of bark powder, 5 parts of wood powder, 10 parts of clay, 4 parts of maleic anhydride, 3 parts of cinnamic acid, 2.5 parts of dicumyl peroxide, 3 parts of KGF liquid organic calcium multi-component compound stabilizer, 0.2 parts of organic silane coupling agent SCA-16030, 2.0 parts of zinc oxide, 1.2 parts of stearic acid share.

[0026] Put the above base materials, fillers, and compounding agents in sequence on the experimental open mill for mixing, and after the mixing is sufficient, pull out the film and cool it. Lay the adhesive film between the wood veneers before the press board test; press conditions: pressure 1.6Mpa, hot press temperature 150°C-160°C, time 6 minutes, cold press (room temperature) 6 minutes. Test intensity ≥ 1.0Mpa.

[0027] The invention is a solid film-like adhesi...

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Abstract

The invention provides a formaldehyde-free wood adhesive film which comprises the following components in parts by weight: 100 parts of base material, 10-100 parts of filler, 5-15 parts of tackifier, 0.1-5 parts of crosslinking agent, 2-4 parts of stabilizer, 3-10 parts of maleic anhydride, 0-10 parts of cinnamic acid, 3-15 parts of atactic polypropylene or polyethylene wax, 0-3 parts of coupling agent, 1-5 parts of zinc oxide and 0.5-2.0 parts of stearic acid. The base material is a mixture of at least two of chloride high polymer, chlorosulfonate high polymer, ethylene-vinyl acetate copolymer, ethylene-ethyl acrylate copolymer and polyolefin; and the filler is at least one of shell powder, bark powder, wood meal, flour, short fiber, argil and graphite powder. The wood adhesive film is free of formaldehyde and organic volatile matters, can not influence and jeopardize the environment and human health, has the advantages of excellent environmental protection property and long shelf life, and is convenient for use, transportation and storage.

Description

【Technical field】 [0001] The invention relates to a formaldehyde-free wood adhesive film. 【Background technique】 [0002] At present, the adhesives used for plywood in my country are basically thermosetting resins synthesized from formaldehyde, including urea-formaldehyde resins, phenolic resins, and melamine-formaldehyde resins (commonly known as trialdehyde glues), of which the amount of urea-formaldehyde resins is more than 80%. Because urea-formaldehyde resin adhesives are easy to manufacture, easy to use, low in cost and good in performance, since its industrial production in 1957, its leading position has been difficult to shake. With the development of social life, people's awareness and requirements for health and environmental protection continue to increase, and the shortcomings of formaldehyde-based resin adhesives are constantly being discovered and understood. The main disadvantage of this type of adhesive is that there is excessive free formaldehyde causing po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/00C09J123/28C09J123/08
Inventor 杨学荣
Owner 杨学荣
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