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Modified adhesive for manufacturing laminate flooring base material

A technology of laminated flooring and adhesives, applied in the direction of adhesives, adhesive additives, adhesive types, etc., can solve the problems of high manufacturing cost of laminated flooring substrates, pollution from free formaldehyde release, poor water resistance, etc., and achieve good water resistance , strong market competitive advantage, and simple effects

Inactive Publication Date: 2017-06-23
GUANGXI FENGLIN WOOD IND GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the existing technical problems of high manufacturing cost, low strength, poor water resistance and free formaldehyde release pollution in the reinforced floor base material, and provide a green, environmentally friendly, Modified adhesive with low cost, high strength and good storage stability and preparation method thereof

Method used

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  • Modified adhesive for manufacturing laminate flooring base material
  • Modified adhesive for manufacturing laminate flooring base material
  • Modified adhesive for manufacturing laminate flooring base material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A modified adhesive for the manufacture of reinforced floor base material, its raw material formula is as shown in table 1:

[0031] Table 1

[0032]

[0033] Note: U1, U2, and U3 represent the first, second, and third additions of urea, respectively; M1, M2 represent the first and second additions of melamine, the same below.

[0034] Wherein, the modifying agent is a mixture of hexamethyltetramine and ammonium salt, the hexamethyltetramine:ammonium salt=6:4; the reinforcing agent is oxidized starch.

[0035] The preparation method of the modified adhesive for the manufacture of the above-mentioned reinforced floor base material comprises the following process steps:

[0036] (1) Put formaldehyde, modifier and the first melamine (M1) into the reaction kettle, start the agitator, stir and heat up to 45-65°C, and keep it warm for 10-20 minutes;

[0037](2) Check the pH value, add formic acid solution to adjust the pH value to 5.0-5.2, add the first industrial urea (...

Embodiment 2

[0046] A modified adhesive for the manufacture of laminated floor base material, its raw material formula is as shown in table 3:

[0047] table 3

[0048]

[0049] Wherein, the modifying agent is a mixture of hexamethyltetramine and ammonium salt, the hexamethyltetramine:ammonium salt=9:1; the reinforcing agent is oxidized starch.

[0050] The preparation method of the modified adhesive for the manufacture of the above-mentioned reinforced floor base material comprises the following process steps:

[0051] (1) Put formaldehyde, modifier and the first melamine (M1) into the reaction kettle, start the agitator, stir and heat up to 45-65°C, and keep it warm for 20-30 minutes;

[0052] (2) Check the pH value, add formic acid solution to adjust the pH value to 5.7-6.0, add industrial urea (U1) for the first time, continue to heat up to 80-85°C, and keep warm for 10-20 minutes;

[0053] (3) Check the polymerization degree of the reaction. When the viscosity of Tu-4 cups (25°C)...

Embodiment 3

[0061] A modified adhesive for the manufacture of reinforced floor base material, its raw material formula is as shown in table 5:

[0062] table 5

[0063]

[0064] Wherein, the modifying agent is a mixture of hexamethyltetramine and ammonium salt, the hexamethyltetramine:ammonium salt=8:2; the reinforcing agent is oxidized starch.

[0065] The preparation method of the modified adhesive for the manufacture of the above-mentioned reinforced floor base material comprises the following process steps:

[0066] (1) In the reaction kettle, put formaldehyde, modifier and the first melamine (M1), start the agitator, stir and heat up to 45-65°C, keep warm for 10-20min;

[0067] (2) Check the pH value, add formic acid solution to adjust the pH value to 5.2-5.5, add the first industrial urea (U1), continue to heat up to 80-90°C, and keep warm for 10-20 minutes;

[0068] (3) Check the polymerization degree of the reaction. When the viscosity of Tu-4 cups (25°C) is 15-16s, immediate...

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Abstract

The invention discloses a modified adhesive for manufacturing a laminate flooring base material. The modified adhesive for manufacturing the laminate flooring base material is prepared by the following raw materials in parts by weight: 51.0-55.0 parts of industrial formaldehyde, 36.0-40.0 parts of industrial urea, 2.0-2.9 parts of melamine, 0.2-0.49 parts of a modifying agent and 1.6-2.0 parts of a reinforcing agent; the mass concentration of the industrial formaldehyde is 37%; in the preparation process of the modified adhesive for manufacturing the laminate flooring base material, the raw materials are enabled to react under a weak acid condition, a slightly weak acid condition to a neutral condition and a weak alkali condition. The modified adhesive for manufacturing the laminate flooring base material, disclosed by the invention, has the advantages of short adhesive manufacturing time, high efficiency, low cost and low requirements on synthesis equipment and production process condition; the modified adhesive for manufacturing the laminate flooring base material can be manufactured without additional equipment in adhesive manufacturing workshops of wood-based panel enterprises; an E1 / E0-grade laminate flooring base material can be manufactured by using the modified adhesive and has the advantages of high bonding strength, short curing time, good waterproofness and water resistance, low free formaldehyde release and so on.

Description

technical field [0001] The invention belongs to the technical field of modified adhesives for wood-based panels, and in particular relates to modified adhesives for the manufacture of reinforced floor substrates. Background technique [0002] Because urea-formaldehyde resin adhesive has the advantages of high bonding strength, fast curing, light color, low cost, easy to obtain raw materials, mature production technology and convenient use, more than 90% of MDF manufacturing in my country uses urea-formaldehyde resin adhesive. Laminate flooring is widely used as one of the main materials for interior decoration. With the continuous improvement of people's living standards, the requirements for the living environment are getting higher and higher, and the concept of green decoration materials has been deeply rooted in the hearts of the people. Therefore, the issue of formaldehyde release from flooring products has attracted more and more attention. Formaldehyde is a very reac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J161/30C09J11/08C09J11/06C09J11/04C08G12/38
CPCC08G12/38C09J11/04C09J11/06C09J11/08C09J161/30C09J2301/312C08L3/10C08K5/17C08K3/28
Inventor 韦淇峰魏云和黄精明
Owner GUANGXI FENGLIN WOOD IND GRP CO LTD
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