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A kind of urea-formaldehyde resin adhesive for artificial board and its production process

A urea-formaldehyde resin and a production process technology, applied in the field of chemistry, can solve problems such as low formaldehyde emission, and achieve the effects of good adhesion, good industrial utilization value and good effect

Active Publication Date: 2017-08-29
湖南寰宇新材料科技股份有限公司
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Problems solved by technology

However, there are not many urea-formaldehyde resins on the market that can achieve E1 / E0 level release. Therefore, it is particularly important to study new urea-formaldehyde resins with low formaldehyde emission, low toxicity or even non-toxicity, and are harmless to operators or the environment.

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  • A kind of urea-formaldehyde resin adhesive for artificial board and its production process
  • A kind of urea-formaldehyde resin adhesive for artificial board and its production process

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Embodiment Construction

[0019] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific drawings.

[0020] A new type of urea-formaldehyde resin adhesive for man-made boards and its manufacturing process. The formula and mole percentage of the urea-formaldehyde resin adhesive are: 44-47% urea, 47-50% formaldehyde, 3.9-4.3% ammonia, poly Vinyl alcohol 0.10-0.15%, melamine 1.6-2.0%. The data sources are as follows:

[0021] According to the project that needs to be optimized in the study of the best formula of the new environment-friendly urea-formaldehyde resin adhesive, design 4 factors and 3 levels to arrange the test according to the L9 (34) orthogonal test table, and optimize the process parameters of the formula composition of the urea-formaldehyde resin adhesive.

[0022] 4 factors and 3 levels are arranged according to the L9 (34) orthogonal...

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Abstract

The invention relates to a novel urea formaldehyde resin adhesive for artificial boards and a manufacturing technique thereof. The invention is characterized in that the urea formaldehyde resin adhesive is composed of the following components in percentage by mole: 44-47% of urea, 47-50% of formaldehyde, 3.9-4.3% of ammonia water, 0.10-0.15% of polyvinyl alcohol and 1.6-2.0% of melamine. A specific technical process is adopted for production. The addition amount of formaldehyde, addition amount and frequency of urea, reaction temperature / time and addition amount of melamine are searched to detect an optimal proportioning relationship, so that the urea formaldehyde resin adhesive for artificial boards achieves the greatest economy and best adhesive capacity on the premise that the formaldehyde release amount reaches Grade E1 / E0, thereby having favorable industrial utilization value.

Description

technical field [0001] The invention relates to the field of chemistry, in particular to a novel environment-friendly urea-formaldehyde resin adhesive used for man-made board processing and a manufacturing process thereof. Background technique [0002] In recent years, with the rapid development of my country's real estate industry, my country's wood industry has grown rapidly, and the total output of my country's wood-based panels has ranked first in the world for many years. [0003] Man-made boards are boards that are machined using natural wood and scraps from processing. Urea-formaldehyde resin or modified urea-formaldehyde adhesive is mostly used in the production process of boards. This type of adhesive has high bonding strength, fast curing, colorless cured adhesive layer, simple manufacture, good operability, low cost, and abundant sources of raw materials. And many advantages such as excellent comprehensive performance, so it has become the main type of rubber in t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J161/32C08G12/40C08G12/38
Inventor 赵子剑
Owner 湖南寰宇新材料科技股份有限公司
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