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Spray type elastomer anti-corrosive protective material and its preparing method

A technology of protective materials and elastomers, applied in anti-corrosion coatings and other directions, can solve the problems of high price, limited use field, high product cost, etc., and achieve the effect of reducing product cost and long service life

Inactive Publication Date: 2004-01-28
AODEHUA SCI & TECH IND YANTAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Since the amino-terminated polyether is exclusively produced by the Huntsman Company of the United States, the price is expensive, and the price of amine chain extenders such as diethyldiaminotoluene is even more expensive, resulting in high product costs, making this promising product in the market. The field of use is very limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Add 54 parts of liquefied MDI (parts by weight, the same below) into the reaction kettle, raise the temperature to 70°C, add 2204 parts of polyether to the kettle, and keep the temperature between 80-100°C for 2 hours to obtain a preform with an NCO% content of 14%. Polymer, this is the A component. Component B is prepared by mixing 25 parts of amino-terminated polyether D2000, 50 parts of high-activity polyether with a molecular weight of 2000, and 25 parts of DETDA and stirring evenly. The AB two-component is applied by the high-pressure airless spraying equipment of the American GUSMAR company. The material can be used for waterproofing and protection of chemical storage tanks and concrete bases. Its main physical properties are as follows:

[0017] Gel time 10 seconds

[0018] Tensile strength 8.6MPa

[0019] Elongation at break 160%

[0020] Tear strength 38KN / M

[0021] Hardness (Shore) 85A

Embodiment 2

[0023] Put 47 parts of liquefied MDI into the reaction kettle, raise the temperature to 70°C, add 18 parts of pure MDI into the kettle, add 22035 parts of polyether after dissolving, keep it warm at 80-100°C for 2 hours, and obtain 18% NCO% Prepolymer, this is component A. Component B is prepared by mixing 18 parts of amino-terminated polyether D2000, 42 parts of highly reactive polyether with a molecular weight of 2000, 29 parts of DETDA, and 11 parts of TMP, and stirring evenly. The AB two-component is applied by the high-pressure airless spraying equipment of the American GUSMAR company. The material can be used for waterproofing, protection and wear resistance of the concrete base. Its main physical properties are as follows:

[0024] Gel time 5 seconds

[0025] Tensile strength 14MPa

[0026] Elongation at break 130%

[0027] Tear strength 53KN / M

[0028] Hardness (Shore) 47D

Embodiment 3

[0030] Put 47 parts of liquefied MDI into the reaction kettle, raise the temperature to 70°C, add 18 parts into the kettle, add 22035 parts of polyether after dissolving, keep warm at 80-100°C for 2 hours, and obtain a prepolymer with an NCO% content of 18%. Body, this is the A component. Component B is prepared by mixing 18 parts of amino-terminated polyether D2000, 37 parts of high-activity polyether with a molecular weight of 2000, 9 parts of DETDA, 28 parts of MOCA, and 8 parts of TMP, and stirring evenly. The AB two-component is applied by the high-pressure airless spraying equipment of the American GUSMAR company. The material can be used for anticorrosion and protection of steel base surfaces. Its main physical properties are as follows:

[0031] Gel time 7 seconds

[0032] Tensile strength 17MPa

[0033] Elongation at break 68%

[0034] Tear strength 80KN / M

[0035] Hardness (Shore) 60D

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Abstract

The present invention discloses a spray-coating type elastomer anticorrosive protective material formed from two components of A an B whose volume ratio is 1:1, in which the component A is the isocyanate prepolymer whose isocyanate (NCO) content is 12-23%, said isocyanate prepolymer is synthesized by using polyisocyanate and polyether polyol; and the component B is formed from 40-90% of high activity polyether and 10-60% of polyamine / alcohol chain extender. In the formula of component B the low-cost high-activity alcohol ether and trihydroxymethyl propane are substituted for high-cost amine chain extenders of end amino polyether and DETDA, etc. It can be used for paving seamless ground surface and wall surface of GMP pharmaceutical workshop and chemical workshop and internal and external layer anticorrosion protection of oil pipeline, marine platform and others.

Description

1. Technical field [0001] The invention relates to a high-film-thickness spray-coated elastic body anticorrosion and protection material and a preparation method thereof. 2. Background technology [0002] The high-film-thickness spray-on elastomer anti-corrosion protection material is composed of A.B two-component, and is constructed by two-component high-pressure airless spraying equipment. It has fast curing, continuous spraying on the facade without sagging, no seams and does not affect its affinity and adhesion; no need for any solvent, 100% solid content; good adhesion to various substrates, good elasticity, high strength, Anti-aging, anti-corrosion, anti-chemical medium, long life; good stability, can be used for a long time at -40 ℃ ~ 150 ℃, etc., it is an environmentally friendly type developed after high solid coatings, powder coatings, water-based coatings, etc. Corrosion protection material. [0003] In order to meet the requirements of spraying construction, ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/08C09D175/08
Inventor 李通俊史连业孙相启
Owner AODEHUA SCI & TECH IND YANTAI
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