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Formaldehyde-free environment-friendly chipboard and manufacturing method thereof

A kind of particleboard, environmental protection technology, applied in the manufacturing field of formaldehyde-free and environmentally friendly particleboard, can solve the problems of difficult to meet the needs of healthy home, high formaldehyde emission, etc., to achieve the effect of easy glue spraying and edge collapse

Inactive Publication Date: 2017-11-21
INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing particle boards on the market are made of wood or other fiber plants. After certain mechanical processing and separation of various unit materials, the boards or molded products are glued with urea-formaldehyde resin. needs

Method used

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Experimental program
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Effect test

Embodiment 1

[0017] The formaldehyde-free environment-friendly particle board provided by the invention, wherein the raw material includes main material and auxiliary material, wherein the main material is composed of shavings. Adhesives in the auxiliary materials are soy-based protein adhesives and isocyanate, the solid content of the adhesive is 17%wt of the main ingredient, and the addition of water repellent is 1.5%wt of the main ingredient.

[0018] The preparation method of the soy-based protein adhesive is as follows: mix 1 part of soybean flour and 2 parts of distilled water and stir evenly at room temperature, then adjust the pH value of the mixture to 10.0 with 0.03 part of NaOH at 50°C and stir for 90 minutes. Add 1 part of the alkali-modified soybean flour mixture to 0.6 part of polyamide polyamine epichlorohydrin and stir at 30° C. until evenly stirred to form a non-formaldehyde modified soybean-based protein adhesive product. The obtained aldehyde-free modified soy-based prot...

Embodiment 2

[0027] The formaldehyde-free environment-friendly particle board provided by the invention, wherein the raw material includes main material and auxiliary material, wherein the main material is composed of shavings. The adhesives in the auxiliary materials are soy-based protein adhesives and isocyanate, the solid content of the adhesive is 16%wt of the main ingredient, and the addition of water repellent is 1.5%wt of the main ingredient.

[0028] The preparation method of the soy-based protein adhesive is as follows: mix 1 part of soybean flour and 5 parts of distilled water and stir evenly at room temperature, then adjust the pH value of the mixture to 10.0 with 0.1 part of NaOH at 50°C and stir for 90 minutes. Add 1 part of the alkali-modified soy flour mixture to 0.8 part of polyamide-polyamine-epichlorohydrin and stir at 30°C until evenly stirred to form a formaldehyde-free modified soy-based protein adhesive product. The obtained aldehyde-free modified soy-based protein ad...

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Abstract

The invention discloses a formaldehyde-free environment-friendly chipboard. A non-formaldehyde adhesive is adopted, a soybean-based protein adhesive is adopted for a surface layer and a bottom layer, and a soybean-based protein adhesive or an isocyanate adhesive is adopted for a core layer. The formaldehyde emission amount of the formaldehyde-free environment-friendly chipboard is far lower than 1.5 mg / L specified by the national standard grade E1, and the formaldehyde-free environment-friendly chipboard is developed. The invention further provides a manufacturing method of the formaldehyde-free environment-friendly chipboard. The manufacturing method comprises the main steps of (1) adhesive applying, (2) pavement, (3) hot pressing and (4) edge cutting. In the adhesive applying and pavement working sections, corresponding adhesive applying of the surface layer and the core layer and pavement of three layers of structures are adopted, and meanwhile, the soybean-based protein adhesive is adopted for the surface layer and the bottom layer, so that the problem of board sticking caused by the condition that during hot pressing, isocyanate flows into a hot pressboard through gaps is solved. In addition, in subsequent hot pressing, the problems that isocyanate does not have initial adhesiveness, consequently chipboard shifts, and edge subsiding and the like are produced are solved. Through combination of the modes, development of the formaldehyde-free environment-friendly chipboard is achieved.

Description

technical field [0001] The invention relates to a formaldehyde-free environment-friendly particle board, and also provides a manufacturing method of the formaldehyde-free environment-friendly particle board. Background technique [0002] my country is currently a big country in the production and consumption of particleboard, and the products are mainly used in household fields such as furniture, flooring, and decoration. With the continuous improvement of people's living standards, the awareness of environment and safety is gradually increasing, and people will pay more and more attention to green materials and environmentally friendly products. Health and safety have become the highest goals pursued by people. Environmental protection products came into being and developed rapidly. Particleboard is closely related to people's daily life as building materials such as home furnishing and decoration, so people have put forward higher requirements for the environmental prote...

Claims

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Application Information

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IPC IPC(8): B27N3/14B27N3/08B27N1/02C09J189/00
CPCB27N1/0209B27N3/002B27N3/08B27N3/14C09J189/00
Inventor 张亚慧于文吉任丁华
Owner INST OF WOOD INDUDTRY CHINESE ACAD OF FORESTRY
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