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Polyurethane foaming glue with added large-molecular modified calcium carbonate

A technology of polyurethane foam and calcium carbonate, which is applied in the field of polyurethane foam, can solve the problems of unsatisfactory safety, poor heat resistance, and low production efficiency, achieve good heat insulation effect, reduce hydrophilicity, and cost low effect

Inactive Publication Date: 2016-12-07
HEFEI E CHON METAL PLATE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional sealing process is to use the physical bonding method to bond the standard seal to the sealing position. This method has many defects such as low production efficiency, poor reliability, and unsightly appearance.
[0003] In the article "Preparation of Foaming Two-Component Polyurethane Adhesive", trihydroxypolyoxypropylene ether, castor oil and diphenylmethane diisocyanate are used as the main raw materials, glycerol is used as the chain extender, and water is used as the foaming agent. , through a suitable proportion, a foaming two-component polyurethane adhesive was synthesized by pre-polymerization method. The foamed adhesive foam was uniform and delicate, with high tensile and shear strength and excellent comprehensive performance. , but its heat resistance is poor and it is easy to burn. When it is used as the seal of a switch cabinet or a cabinet, it cannot meet the safety of use. This requires strengthening and modifying its thermal stability to improve its flame retardant performance.

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0014] A polyurethane foam added with macromolecular modified calcium carbonate, made of the following raw materials in parts by weight (kg): 150 diphenylmethane diisocyanate, 100 trihydroxypolyoxypropylene ether, 100 castor oil, and glycerin 5. Diethyl phosphate 40, an appropriate amount of 1mol / L sodium hydroxide solution, diatomaceous earth 13, distilled water 5, triethanolamine 2, dibutyltin dilaurate 3, sodium α-olefin sulfonate 3, dimethyl silicone oil 5 , methyl methacrylate 9, butyl acrylate 9, mercaptoethanol 0.25, toluene amount, azobisisobutyronitrile 0.015, nano calcium carbonate 5.

[0015] Described a kind of polyurethane foam glue that adds macromolecule modified calcium carbonate is made by following specific steps:

[0016] (1) Pour trihydroxypolypropylene oxide ether, castor oil and glycerin into the reaction kettle, heat it in a constant temperature water bath to 85°C, stir and react at a speed of 150 rpm for 60 minutes, then cool down to 40°C, slowly drop ...

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PUM

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Abstract

The invention discloses polyurethane foaming glue with added large-molecular modified calcium carbonate. The foaming glue is prepared from, by weight, 150-160 parts of diphenyl methane diisocyanate, 100-105 parts of propoxylated glycerin, 100-110 parts of castor oil, 5-6 parts of glycerol, 40-43 parts of diethyl phosphate, a proper amount of 1mol / L sodium hydroxide, 13-15 parts of diatomite, 5-6 parts of distilled water, 2-3 parts of triethanolamine, 3-4 parts of dibutyltin dilaurate, 3-4 parts of alpha-olefin sulfonate, 5-6 parts of simethicone, 9-10 parts of methyl methacrylate, 9-10 parts of butyl acrylate, 0.25-0.26 part of mercaptoethanol, a proper amount of methylbenzene, 0.015-0.02 part of azodiisobutyronitrile and 5-6 parts of nano calcium carbonate. The production process of the product is convenient to control, on-site foaming can be achieved, cost is low, and the prepared foaming glue is good in viscosity, excellent in sealing performance, suitable for sealing of switch cabinets and good in stability.

Description

technical field [0001] The invention relates to the technical field of styrofoam, in particular to a polyurethane styrofoam added with macromolecule modified calcium carbonate. Background technique [0002] Two-component polyurethane adhesive is the most important type of polyurethane adhesive, usually composed of A component (main agent) and B component (curing agent), where A component is a hydroxyl component, B component For components containing free isocyanate groups, the two are packaged separately and can be formulated and used in a certain proportion. In our country, the research on foaming two-component polyurethane adhesives began in 1995 and was gradually put into use in the late 1990s. The foaming two-component polyurethane adhesive has the characteristics of porosity, low relative density, and high specific strength. According to different raw materials and formulas, it can be made into ordinary soft foam, hard foam, high-resilience foam and slow-rebound foam. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/14C08G18/67C08G18/66C08G18/48C08G18/32C08G18/12C08G18/24C08G18/18C08J9/08C08G101/00
CPCC08G18/12C08G18/165C08G18/1825C08G18/246C08G18/3206C08G18/36C08G18/4829C08G18/6677C08G18/6696C08G2101/00C08G2170/60C08J9/08C08J2203/02C08J2207/02C08J2375/14C09J175/14
Inventor 陆厚平
Owner HEFEI E CHON METAL PLATE TECH CO LTD
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