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Novel nontoxic floor adhesive

A floor glue, a new type of technology, applied in the direction of adhesives, adhesive types, aldehyde/ketone condensation polymer adhesives, etc., can solve the problems of not really meeting the standards and environmental protection standards

Inactive Publication Date: 2009-02-04
卢厚明
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AI Technical Summary

Problems solved by technology

At present, there are so-called E0 standards in China, but there are very few companies that can really meet this standard, and most of them have not really reached the standard, and have not reached the real environmental protection standard.

Method used

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Effect test

Embodiment Construction

[0004] This specific embodiment adopts the following technical scheme: it is composed of the following ingredients in weight percentage: urea 40%, formaldehyde 50%, industrial alkali 1%, formic acid 0.5%, melamine 3%; use the above raw materials to produce through the following process flow; 1. Feed materials, add the first batch of formaldehyde and urea to react under alkaline conditions; 2. Keep warm, keep the reaction temperature and fully reflect; 3. Adjust acid, adjust the pH value of raw materials in the reactor, acidic reaction, increase the Particle size; 4. Adjust alkali, stop the growth of particle size, change the total pH value of the reactor with lye; 5. Add melamine to control the content of formaldehyde; Can. In the present invention, the finished product is finally obtained through synthesis reaction, then re-synthesis and polyaddition reaction. The floor glue produced by the formula and process of the present invention has obvious environmental protection eff...

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Abstract

The present invention relates to the formula and preparation technique of a woodworking glue, in particular to a novel non-toxic flooring glue. The non-toxic flooring glue is composed of ingredients with the following weight percent: 35 percent to 45 percent of urea, 45 percent to 55 percent of formaldehyde, 0.5 percent to 1.2 percent of industrial alkali, 0.3 percent to 1 percent of formic acid and 3 percent to 3.5 percent of melamine. The non-toxic flooring glue is prepared with the materials according to the following process flow: (1) feeding the materials; (2) keeping temperature; (3) adjusting acidity; (4) adjusting alkalinity; (5) adding melamine; (6) discharging material. The non-toxic flooring glue prepared by the formula and technique of the present invention has obvious environment-protecting effect, the content of formaldehyde is less than 1g / kg, and the actual test result is 0.5g / kg. The non-toxic flooring glue reaches the environment-protecting standard of European flooring glue.

Description

Technical field: [0001] The invention relates to a formula and a production process of woodworking glue, in particular to a non-toxic floor glue. Background technique: [0002] At present, almost all laminated floor adhesives contain formaldehyde. There are many opinions on E1, E0, 5mg / 100g, 0.5mg / liter, 0.08mg / cubic meter, etc., which are hot on the market, and even some so-called professionals think can not say it clearly. The relevant national testing departments have stipulated three methods for measuring floor formaldehyde content - perforation extraction method, climate chamber method and dryer method. Among them, in the flooring industry, there are only two national standards, E1 and E2. At present, there are so-called E0 standards in China, but there are very few companies that can really meet this standard, and most of them have not really reached the standard, and have not reached the real environmental protection standard. Invention content: [0003] The purp...

Claims

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Application Information

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IPC IPC(8): C09J161/10
Inventor 卢厚明
Owner 卢厚明
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