Environment-friendly MDI glue and fireproof formaldehyde-free plate containing same and used for furniture

An environment-friendly, board-based technology, applied to other household appliances, household appliances, household components, etc., can solve the problems of affecting the physical and mechanical properties of products, difficulty in obtaining satisfactory bonding strength, and low yield, and achieve good environmental protection effects and excellent fire protection Effect, the effect of easy-to-obtain raw materials

Pending Publication Date: 2021-11-19
湖南省玛芸家居科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the wood-based panels on the market are all made of trialdehyde glue (urea-formaldehyde, formaldehyde, phenolic formaldehyde). Even the ecological panels currently on the market are improved on the basis of trialdehyde glue, which cannot completely solve the problem of free formaldehyde. , and using traditional methods for material crushing or fiber separation, the yield is low and the shape is poor, which affects the physical and mechanical properties of the product, and it is difficult to obtain satisfactory bonding strength (especially internal bonding strength)

Method used

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  • Environment-friendly MDI glue and fireproof formaldehyde-free plate containing same and used for furniture
  • Environment-friendly MDI glue and fireproof formaldehyde-free plate containing same and used for furniture
  • Environment-friendly MDI glue and fireproof formaldehyde-free plate containing same and used for furniture

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0042] The preparation of soybean meal gum used in the embodiment of the present invention:

[0043] Take soybean meal and add deionized water, stir evenly, add water-based epoxy resin, stir at high speed for 5 minutes to obtain soybean meal glue, the content of epoxy resin accounts for 4.6wt% of soybean meal glue.

Embodiment 1

[0045] Preparation of environment-friendly MDI glue:

[0046] Under the condition of 40°C and nitrogen protection, the vacuum dehydrated polytetrahydrofuran and H 12 Mix MDI, heat to 83°C, then drop 2 drops of catalyst dibutyltin dilaurate, react for 2.5h, add 3-mangostin and BDO, react at 83°C for 3.5h; then cool down to below 40°C Get MDI glue. Among them, H in MDI glue 12 The content of MDI is 28.1wt%, the content of 3-isomangostin is 7.4wt%, the content of BDO is 24.5wt%, and the content of polytetrahydrofuran is 40wt%.

[0047] A kind of preparation (technological process such as image 3 shown):

[0048] Adhesive preparation

[0049] Preparation of inorganic gel materials, MgO, MgSO 4 and active silicon additives and active ALSiO 4 According to the mass ratio of 1:1.9:0.7:0.55, add it into water at 33°C and stir thoroughly to obtain an inorganic gel;

[0050] Preparation of organogel material, take soybean meal glue and environment-friendly MDI glue, add deionize...

Embodiment 2

[0055] The preparation of environment-friendly MDI glue is different from that of Example 1: H in MDI glue 12 The content of MDI is 29.7wt%, the content of 3-isomangostin is 8.4wt%; the content of BDO is 23.1wt%; the content of polytetrahydrofuran is 38.8wt%.

[0056] The difference between the preparation of a kind of fire-proof formaldehyde-free board and embodiment 1:

[0057] During the preparation of the adhesive, MgO, MgSO 4 , active silicon additives and active ALSiO 4 The mass ratio of soybean meal glue, environment-friendly MDI glue and deionized water is 1:0.68:9.8; the mass ratio of inorganic gel to organic gel is 5.5:1.

[0058] The mass ratio of adhesive to straw material is 2.4:1 in the process of board preparation.

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Abstract

The invention discloses environment-friendly MDI glue and a fireproof formaldehyde-free board containing the same and used for furniture, and relates to the technical field of artificial boards. The content of a hard chain segment in the environment-friendly MDI glue structure is 24.2-30.5 wt%; the material of the hard chain segment comprises MDI or H12MDI; a soft chain segment material in the polyurethane structure comprises polytetrahydrofuran; and a chain extender in the polyurethane structure comprises BPO and 3-isomangostin. The prepared environment-friendly MDI glue has better and excellent mechanical properties and gluing effect, is applied to a plywood preparation process, remarkably improves the internal binding force, static bending intensity, nail-holding power and other properties of a board, has a better fireproof effect of the board, does not generate formaldehyde in the use process, and is safe and environment-friendly.

Description

technical field [0001] The invention belongs to the technical field of artificial boards, and in particular relates to an environment-friendly MDI glue and a fireproof and formaldehyde-free board for furniture containing the same. Background technique [0002] With the development of modern society, people's requirements for furniture are getting higher and higher. In the middle of 2014, environmental problems caused by paint, flooring, automobile exhaust, and furniture production have attracted much attention. Coupled with the rampant smog, indoor decoration pollution and indoor air quality have attracted unprecedented attention. In 2015, more attention will be focused on the field of environmental protection, and of course there will be more green actions for environmental protection. The environmental protection of the furniture itself, such as the control of harmful substances and the environmental protection performance of the accessories used in the processing process...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/76C08G18/75C08G18/66C08G18/48C08G18/32C08G18/67C08H1/00C08L89/00C08L75/08C08K3/22C08K3/30C08K3/34C08L97/02B27N3/08B27N3/00
CPCC08G18/7671C08G18/758C08G18/4854C08G18/10C08G18/675C08H1/00C08L89/00C08L97/02B27N3/08B27N3/002C08L2201/02C08K2003/222C08K2003/3063C08G18/3206C08L75/08C08K3/22C08K3/30C08K3/34
Inventor 赵如意
Owner 湖南省玛芸家居科技有限公司
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