Method for preparing modified composite adhesive

A composite adhesive and adhesive technology, applied in the chemical field, can solve problems such as easy loss, weather resistance, and difficult penetration of dyeing agents, and achieve the effects of less smoke and toxic gases, good high temperature resistance and flame retardant effect

Active Publication Date: 2016-04-06
DEHUA TB NEW DECORATION MATERIAL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

CN103171014B (2015-4-15) discloses a preparation method of scientific and technological wood, but the formaldehyde emission of the technological wood is high, the dyeing agent is difficult to penetrate, easy to lose, not weather-resistant, poor compatibility with water-based adhesives, and environmental pollution in the bleaching and dyeing process more serious
[0004] CN103571409A (2014-2-12) uses phenol and formaldehyde to generate thermosetting phenolic resin under weakly alkaline conditions, and melamine modifies the phenolic resin. Compared with the unmodified phenolic resin, although the flame retardant performance has been improved to a certain extent , but still cannot meet the environmental requirements and adhesion requirements of all functional panels

Method used

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  • Method for preparing modified composite adhesive
  • Method for preparing modified composite adhesive
  • Method for preparing modified composite adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The preparation method of modified composite adhesive is:

[0046] A. 100 parts of formaldehyde aqueous solution, 0.1 part and 0.3 part of amino-terminated hyperbranched polymer PAMAM whose mass concentration is 36.5wt% are 100 parts by weight, and 0.3 part of amino-terminated hyperbranched polymer PAMAM is put into the reactor, and the stirring is started; The active substance is sodium hydroxide, potassium hydroxide, calcium hydroxide, barium hydroxide or ammonia water;

[0047]B. Add 20 parts of 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, heat up to 50°C, add 35 parts of melamine, continue to heat up to 90°C, and react to obtain a preliminary polycondensate;

[0048] C. Add 40 parts of melamine to the above-mentioned preliminary polycondensate, and add 0.6 part of p-toluenesulfonamide to obtain the second polycondensate;

[0049] D. Add 20 parts of urea when the temperature of the second polycondensate is lowered to 70°C, and continue the reaction for 8 minu...

Embodiment 2

[0058] The preparation method of modified composite adhesive is:

[0059] A. 100 parts of formaldehyde aqueous solution, 0.5 part and 0.6 part of amino-terminated hyperbranched polymer PAMAM whose mass concentration is 50wt% are 100 parts in formaldehyde aqueous solution and 0.6 part of amino-terminated hyperbranched polymer PAMAM by weight, and the mass concentration is put into the reactor, and the stirring is started; The active substance is sodium hydroxide, potassium hydroxide, calcium hydroxide, barium hydroxide or ammonia water;

[0060] B. Add 30 parts of 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, heat up to 55°C, add 55 parts of melamine, continue to heat up to 95°C, and react to obtain a preliminary polycondensate;

[0061] C. Add 45 parts of melamine in the above-mentioned preliminary polycondensate, and add 0.9 part of p-toluenesulfonamide to obtain the second polycondensate;

[0062] D. Add 30 parts of urea when the temperature of the second condensation...

Embodiment 3

[0070] The preparation method of modified composite adhesive is:

[0071] A. 100 parts of formaldehyde aqueous solution, 0.4 part and 0.5 part of amino-terminated hyperbranched polymer PAMAM whose mass concentration is 40wt% are 100 parts in formaldehyde aqueous solution and 0.5 part of amino-terminated hyperbranched polymer PAMAM by weight, put into reaction kettle, and start stirring; The active substance is sodium hydroxide, potassium hydroxide, calcium hydroxide, barium hydroxide or ammonia water;

[0072] B. Add 25 parts of 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, heat up to 53°C, add 45 parts of melamine, continue to heat up to 92°C, and react to obtain a preliminary polycondensate;

[0073] C. Add 43 parts of melamine to the above-mentioned preliminary polycondensate, and add 0.8 part of p-toluenesulfonamide to obtain the second polycondensate;

[0074] D. Add 20-30 parts of urea when the temperature of the second condensation polymer is lowered to 72°C, con...

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Abstract

The invention relates to the technical field of chemistry, and particularly relates to a method for preparing modified composite adhesive. The method comprises the following steps: weighing the following components in parts by weight: 100 parts of a formaldehyde aqueous solution, 0.1-0.5 part of an alkaline substance solution and 0.3-0.6 part of amino-terminated hyperbranched polymer PAMAM, and stirring to obtain an initial mixture; adding 20-30 parts of 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide into the initial mixture, heating to 50-55 DEG C, adding 35-55 parts by weight of melamine, further heating to 90-95 DEG C, and reacting to obtain an initial polycondensate; adding melamine and para-toluene sulfonamide into the initial polycondensate to obtain a second polycondensate; adding 20-30 parts by weight of urea when the second polycondensate is cooled to 70-75 DEG C, further reacting for 8-12 hours, and adding 3-5 parts of a first formaldehyde scavenger and 2-6 parts of a second formaldehyde scavenger when the temperature is reduced to 30-50 DEG C so as to obtain a first adhesive; and mixing the first adhesive and a second adhesive in a mass ratio of (3-7):1 to obtain the modified composite adhesive. The modified composite adhesive is environmentally friendly, and has a flame retarding effect.

Description

technical field [0001] The invention belongs to the field of chemical technology, in particular to a preparation method of a modified composite adhesive. Background technique [0002] With the prosperity of the economy, people's life forms are diversified and enriched. In recent years, vicious fire accidents have occurred from time to time, not only causing a large number of casualties and property losses, but also causing adverse effects on society. Therefore, the National Fire Administration has strengthened The fire protection requirements of buildings, especially public places, stipulate that flame-retardant products must be used in crowded places. Traditionally, the impregnation process is used to produce flame-retardant panels. Although the flame-retardant effect can be achieved, it will increase production costs and the product quality is unstable. [0003] Functionalization is an important direction for the development of recombinant decorative materials. CN1031710...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G12/38C09J161/30C09J133/00C09J175/04C09J123/08C09J123/28C09J151/00C09J151/08C08K3/36C08K3/04
CPCC08G12/38C08K3/04C08K3/36C08L2205/035C09J133/00C09J151/003C09J151/08C09J161/30C08L33/00C08L75/04C08L23/0853C08L23/28C08L51/003C08L51/08C08L11/00
Inventor 詹先旭程明娟张晓伟吴华冲姜彬朱丹莎沈建萍谢序勤丁观芬胡斌强
Owner DEHUA TB NEW DECORATION MATERIAL CO LTD
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