Environment-friendly bolt-free adhesive with long opening time and preparation method thereof

A technology of opening time and adhesives, applied in the direction of adhesives, carboxyl rubber adhesives, adhesive types, etc., can solve the problems of complex processing, environmental protection and formaldehyde-free adhesives, which are difficult to promote and use, and achieve the effect of environmental protection emissions

Active Publication Date: 2020-12-15
杨益成
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 comp

Method used

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  • Environment-friendly bolt-free adhesive with long opening time and preparation method thereof

Examples

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Example Embodiment

[0029]Example 1, such asfigure 1 As shown, a method for preparing an environmentally friendly plug-free adhesive with a long open time includes the following steps:

[0030]Step 1. According to the proportion by mass, add 7 parts of polyvinyl alcohol and 750 parts of water into the stirred reaction kettle, raise the temperature to 95 degrees in the stirred reaction kettle, and then stir. After stirring, keep it warm for half an hour to obtain polyvinyl alcohol. Vinyl alcohol glue;

[0031]Step 2. The polyvinyl alcohol glue obtained in step 1 is stirred and cooled to 32 degrees, and 1 part of sodium lauryl sulfate is added during the stirring process to obtain a polyvinyl alcohol glue mixture;

[0032]Step 3. Add 14 parts of toluene diisocyanate dropwise to the polyvinyl alcohol glue mixture obtained in step 2, and after the toluene diisocyanate is dropwise added, a stirring temperature control reaction is performed, and the modified polyvinyl alcohol glue is obtained after uniform stirring;

[...

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Abstract

The invention discloses an environment-friendly bolt-free adhesive with long opening time and a preparation method thereof, which belong to the technical field of fine polymer chemical engineering. The adhesive disclosed by the invention is water-based formaldehyde-free glue, so that a product can be formaldehyde-free, only water vapor is released in the whole production and manufacturing process,and the environment-friendly emission of a factory is realized; under the condition that raw materials of an existing adhesive are reduced, the auxiliary adhesive prepared through the method is usedfor preparing the adhesive with low cost, the material cost is reduced to about 2100 from original about 3200, and the bonding strength is not affected; by adding an acrylic emulsion, the opening timeof the glue is successfully increased from 20 minutes to 90 minutes, and the bonding strength is not changed after time delay.

Description

Technical field[0001]The invention belongs to the technical field of fine polymer chemicals, and specifically relates to an environmentally friendly plug-free adhesive with a long open time and a preparation method thereof.Background technique[0002]In nature, the adhesion of substances to substances has been widely recognized, and proteins can act as such functional adhesive substances. For example, in the ocean, mussel proteins are extremely adhesive, even on wet surfaces, they can form a strong adhesive effect. Such proteins are called marine adhesive proteins. Therefore, by studying the relationship between the structure and performance of this type of protein, it is expected that a water-based, aldehyde-free adhesive with protein as the main component can be obtained by using the biomimetic function. In nature, plant protein has the advantages of being renewable, easily available, and environmentally friendly, so the development and utilization of plant protein has far-reaching ...

Claims

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Application Information

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IPC IPC(8): C09J113/02C09J133/04C09J129/04C09J11/08C09J11/06
CPCC09J113/02C09J11/08C09J11/06C08L2205/035C08L2205/03C08L33/04C08L29/04C08L3/00C08K5/41C08K5/42
Inventor 杨益成
Owner 杨益成
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