Method for preparing polyurethane adhesive in use for rubber tiles

A polyurethane adhesive, rubber floor tile technology, applied in the direction of polyurea/polyurethane adhesive, adhesive, adhesive type, etc., can solve problems such as worker and environmental hazards, complex adhesive synthesis process, etc., and achieve tensile strength and breaking elongation. Long-Rate Performance Improvement Effect

Inactive Publication Date: 2005-11-16
BEIJING BUILDING MATERIALS ACADEMY OF SCI RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, both the synthesis process of the adhesive is more complicated...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The raw materials of the polyurethane adhesive used for rubber floor tiles are prepared according to the following weight percentages:

[0023] Polyether diol 9;

[0024] Polyether triol 78;

[0025] Toluene diisocyanate 13;

[0026] Benzoyl chloride 0.2;

[0027] Dimethylethanolamine 0.15.

[0028] After the ratio of raw materials is selected, the specific production process is carried out:

[0029] First, add polyether diol and polyether triol into the reaction kettle, start stirring, then raise the temperature to 45°C, continue stirring for 20 minutes, and then add 90% of the amount of toluene diisocyanate and benzoyl chloride to react Continue to heat up the mixture in the kettle to 80±2°C and react for 90 minutes, add 10% of the remaining amount of toluene diisocyanate, raise the temperature to 90±2°C, stir for 0.5 hours, cool down to 50°C, add dimethylethanolamine, stir for 20 Minutes, when the content of the isocyanate group in the adhesive is 6%-8%, and the...

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PUM

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Abstract

A process for preparing the polyurethane adhesive used for rubber floor tile is disclosed. Said polyurethane adhesive features high tension strength and elongation at break, low content of VOC and no phenol.

Description

Technical field [0001] The invention relates to a production technology category of a polyurethane adhesive, in particular to a production technology category of a polyurethane adhesive used for rubber floor tiles. Background technique [0002] At present, the polyurethane rubber floor tiles produced on the market generally use phenol-blocked polyurethane as the adhesive, which is prepared by rapid high-temperature vulcanization on a vulcanizing machine. The synthetic method of this phenol-blocked polyurethane adhesive is divided into two steps. The specific steps are as follows: the first step is to prepare the adduct of toluene diisocyanate and trimethylolpropane; the second step is to use phenol as a blocking agent to block the adduct of toluene diisocyanate and trihydroxymethane. The isocyanate group of this phenol-blocked polyurethane adhesive has been blocked by the blocking agent, and it will not react with the hydroxyl-containing resin at room temperature. It will ...

Claims

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Application Information

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IPC IPC(8): C09J175/08
Inventor 路国忠
Owner BEIJING BUILDING MATERIALS ACADEMY OF SCI RES
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