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Water-based adhesive prepared by adding filler, and preparation method thereof

A filler and adhesive technology, which is applied in the field of water-based adhesives and its preparation, can solve the problems of low glue application, uneven glue application, and difficulty in meeting design requirements, and achieves the effect of realizing environmental protection discharge and reducing consumption.

Inactive Publication Date: 2020-12-22
杨益成
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above-mentioned formaldehyde-free adhesive is also exposed in use: because the curing time is too fast, the factory needs to adjust the process, which makes the processing complicated
These problems have also indirectly led to the difficulty of promoting and using environmentally friendly formaldehyde-free adhesives in the wood-based panel and furniture industries.
And the water-based glue commonly used in the market, due to the low solid content, generally has the situation of uneven glue application and low glue application amount. Although the factory installs glue rollers in the glue applicator, it is still difficult to meet the design requirements; urea-formaldehyde glue Flour is used as a filler, but water-based glue uses flour as a filler, which will reduce the bonding strength of the glue

Method used

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  • Water-based adhesive prepared by adding filler, and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1, as figure 1 Shown, a kind of preparation method by adding the aqueous adhesive of filler, it comprises the steps:

[0034] Step 1. According to the ratio of parts by mass, add 7 parts of polyvinyl alcohol and 750 parts of water into the stirred reactor, raise the temperature in the stirred reactor to 95 degrees and then stir, and keep warm for half an hour after stirring to obtain polyvinyl alcohol. Vinyl glue;

[0035] Step 2. Stir the polyvinyl alcohol glue obtained in step 1 to cool down to 32 degrees, and add 1 part of sodium lauryl sulfate during the stirring process to obtain polyvinyl alcohol mixed glue;

[0036] Step 3. Add 14 parts of toluene diisocyanate dropwise to the polyvinyl alcohol mixed glue obtained in step 2, and then carry out stirring and temperature control reaction after adding the toluene diisocyanate dropwise, and obtain the modified polyvinyl alcohol glue after stirring evenly;

[0037] Step 4, adding 10 parts of modified starch...

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Abstract

The invention discloses a water-based adhesive added with a filler, and a preparation method of the water-based adhesive, and belongs to the technical field of fine polymer chemical engineering. According to the invention, the water-based adhesive is a water-based formaldehyde-free glue, and can achieve be formaldehyde-free, wherein only water vapor is released in the whole production and manufacturing process, so that the environment-friendly emission of a factory is realized; under the condition that raw materials of an existing adhesive are reduced, an auxiliary adhesive prepared from the water-based adhesive of the invention is used for preparing an adhesive with low cost, so that the material cost is reduced to about 2100 from original about 3200, and the bonding strength is not affected; by adding acrylic emulsion, the opening time of the adhesive is successfully increased from 20 minutes to 90 minutes, and the bonding strength is not changed after time delay; the use amount of flour is reduced, so that at least one million tons of flour can be saved for the country; and the filling agent mainly comprises mineral substances, the added filling agent can be used for uniformly coating the water-based glue on the plate, and the bonding strength is not changed.

Description

technical field [0001] The invention belongs to the technical field of fine polymer chemical industry, and in particular relates to a water-based adhesive added with a filler and a preparation method thereof. Background technique [0002] In nature, the adhesion between substances has been widely recognized, and proteins can act as such binding substances. For example, in the ocean, mussel proteins are extremely adhesive and can form strong bonds even on wet surfaces. This type of protein is called marine adhesive protein. Therefore, by studying the relationship between the structure and performance of this type of protein, it is expected to obtain a water-based formaldehyde-free adhesive with protein as the main component by using the biomimetic function. In nature, plant protein has the advantages of being renewable, easy to obtain, and environmentally friendly, so the development and utilization of plant protein has far-reaching significance. Soybean protein is one of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J113/02C09J133/04C09J11/08C09J11/06C09J11/04
CPCC09J113/02C09J11/08C09J11/06C09J11/04C08L2205/03C08L2205/035C08K2201/014C08K2003/265C08L33/04C08L29/04C08K13/02C08K3/346C08K3/26C08K5/29
Inventor 杨益成
Owner 杨益成
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