Double-component polyurethane adhesive, preparation method and application thereof

A two-component polyurethane and adhesive technology, which is applied in polyurea/polyurethane adhesives, adhesives, polymer adhesive additives, etc., can solve the problems of poor sealing properties of polyurethane adhesives, and achieve avoidance of tunnel effect and stability High, good melt fluidity effect

Active Publication Date: 2013-02-06
VONTRON TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] One of the purposes of the present invention is to solve the problem of poor sealability of polyurethane adhesives in the prior art, and provide a double-layer adhesive that is su

Method used

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  • Double-component polyurethane adhesive, preparation method and application thereof
  • Double-component polyurethane adhesive, preparation method and application thereof
  • Double-component polyurethane adhesive, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043](1) Preparation of component A: Take 50g of refined castor oil, 2g of hydrogenated castor oil, 1g of mica powder, 0.1g of polyether modified silicone, 0.1g of saturated polycarboxylate amine salt, and monoglyceride stearate After mixing 2g and 0.1g of trimesoyl chloride evenly, react at 80°C for 2h, then add 0.01g of organometallic catalyst, and stir to obtain component A;

[0044] (2) Preparation of component B: Mix 40g of toluene cyclohexylene diisocyanate, 5g of refined castor oil, 1g of hydrogenated castor oil, 1g of trimethylolpropane and 1g of sodium stearate according to the formula , reacted for 4h to obtain component B;

[0045] (3) Mixing of component A and component B: pack the component A and component B prepared above separately, and mix them at a mass ratio of 1.8:0.8 before use, and then fully stir them evenly.

Embodiment 2

[0047] (1) Preparation of component A: Take 60g of refined castor oil, 5g of hydrogenated castor oil, 5g of mica powder, 0.3g of polyether modified silicone, 0.5g of saturated polycarboxylate amine salt, and monoglyceride stearate After mixing 4g and 2g of trimesoyl chloride evenly, react at 90°C for 1.5h, then add 0.03 parts of organic metals into the catalyst, and stir to obtain component A;

[0048] (2) Preparation of component B: Mix 50g of xylylene diisocyanate, 40g of refined castor oil, 15g of hydrogenated castor oil, 2g of trimethylolpropane and 3g of potassium stearate according to the formula, and then, at 100°C, React 3h to make B component;

[0049] (3) Mixing of component A and component B: Package the component A and component B prepared above separately, mix them at a mass ratio of 1.8:1.2 before use, and then stir well.

Embodiment 3

[0051] (1) Preparation of component A: Take 70g of refined castor oil, 10g of hydrogenated castor oil, 10g of mica powder, 0.5g of fluorine-modified acrylate, 1g of saturated polycarboxylate amine salt, 6g of monoglyceride stearate and After mixing 3 g of benzenetricarboxylic acid chloride evenly, react at 90°C for 1.5 h, then add 0.05 g of amine catalyst, and stir to obtain component A;

[0052] (2) Preparation of component B: Mix 70g of hexamethylene diisocyanate, 20g of refined castor oil, 25g of hydrogenated castor oil, 3g of trimethylolpropane and 5g of calcium stearate according to the formula, and react at 120°C for 2h Prepare B component;

[0053] (3) Mixing of component A and component B: Package the component A and component B prepared above separately, and mix them at a mass ratio of 1:1 before use and then stir well.

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Abstract

The invention discloses a double-component polyurethane adhesive, a preparation method and an application thereof, wherein the double-component polyurethane adhesive comprises an A component and a B component; the A component and the B component are packaged individually and are mixed uniformly according to the mass ratio of (1.8-2.2): (0.8-1.2) when used. The A component comprises refined castor oil, hydrogenated castor oil, mica powder, flatting agent, wetting agent, catalyst, glycerol monostearate and trimesoyl chloride; and the B component comprises isocyanate, refined castor oil, hydrogenated castor oil, trimethylolpropane and stearate. The adhesive has corrosion resistance, strong weather resistance, high stability, good melting fluidity, high adhesive strength, good sealing performance and non-yellowing performance, is suitable for sealing and bonding reverse osmosis membranes, particularly membranes with water content of more than 10%, filling and sealing hollow ultrafiltration membranes, and completely avoids tunnel effect of adhesive lines due to bad sealing performance.

Description

[0001] technical field [0002] The invention relates to a two-component polyurethane adhesive and its preparation method and application, in particular to a two-component polyurethane suitable for bonding reverse osmosis membrane elements with a moisture content of more than 10% in the membrane and potting hollow ultrafiltration membranes Adhesives and methods of preparation and applications thereof. Background technique [0003] The reverse osmosis membrane is the core component of reverse osmosis. It is an artificial semipermeable membrane with certain characteristics that simulates biological semipermeable membranes. It is generally made of polymer materials. Such as cellulose acetate film, aromatic polyhydrazide film, aromatic polyamide film. The diameter of surface micropores is generally between 0.5 and 10nm, and the permeability is related to the chemical structure of the membrane itself. Some polymer materials have good repellency to salt, but the water penetration ...

Claims

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Application Information

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IPC IPC(8): C09J175/14C09J11/04C09J11/06C09J11/08B01D67/00B01D69/08
Inventor 吴宗策蔡志奇金焱梁松苗
Owner VONTRON TECH CO LTD
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