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Preparation of ultraviolet-resistant spraying polyurea elastomer material

A polyurea elastomer, UV-resistant technology, used in polyurea/polyurethane coatings, coatings, etc., can solve the problems of accelerating the degradation of elastomer molecular segments, reducing physical properties, prone to yellowing, etc., and achieving outdoor aging resistance. performance, excellent aging resistance, not easy to decompose or turn yellow

Inactive Publication Date: 2011-05-25
SHANGHAI WEIKAI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Existing spray-coated polyurea elastomers are prone to yellowing when exposed to ultraviolet light. When used on exterior walls or roofs of buildings, they will quickly change color, which not only affects the appearance, but also accelerates the degradation of elastomer molecular segments, reducing the its physical properties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A preparation method of an ultraviolet-resistant spray polyurea elastomer material, the method comprising the following steps:

[0018] (1) Prepare component B according to the following ingredients and content (weight):

[0019] Primary amino-terminated alkylene oxide compound (relative molecular mass is 2000) 60 kg

[0020] Primary amino-terminated alkylene oxide compound (relative molecular mass is 5000) 5 kg

[0021] Isophoronediamine 15kg

[0022] chain extender 1000 12 kg

[0023] Color paste 8 kg

[0024] Prepare the A component isophorone diisocyanate of 100 kilograms simultaneously;

[0025] (2) Add the amino-terminated alkylene oxide compound, isophorone diamine, and chain extender into a stainless steel stirring tank at normal temperature and pressure, and stir at a medium speed (700-800 rpm) for 10 minutes;

[0026] (3) Reduce the stirring speed to low speed (300 rpm), slowly add color paste, and stir at high speed (1000 rpm) for 10 minutes to obtain ...

Embodiment 2

[0029] A preparation method of an ultraviolet-resistant spray polyurea elastomer material, the method comprising the following steps:

[0030] (1) Prepare component B according to the following ingredients and content (weight):

[0031] Primary amino-terminated alkylene oxide compound (relative molecular mass is 4000) 55 kg

[0032] Primary amino-terminated alkylene oxide compound (relative molecular mass is 5000) 13 kg

[0033] Isophoronediamine 13kg

[0034] chain extender 3000 12 kg

[0035] Color paste 7 kg

[0036] Prepare the A component isophorone diisocyanate of 100 kilograms simultaneously;

[0037] (2) Add the amino-terminated alkylene oxide compound, isophorone diamine, and chain extender into a stainless steel stirring tank at normal temperature and pressure, and stir at a medium speed (700-800 rpm) for 15 minutes;

[0038] (3) Reduce the stirring speed to low speed (300 rpm), slowly add color paste, and stir at high speed (1000 rpm) for 10 minutes to obtain...

Embodiment 3

[0041] A preparation method of an ultraviolet-resistant spray polyurea elastomer material, the method comprising the following steps:

[0042] (1) Prepare component B according to the following ingredients and content (weight):

[0043] Primary amino-terminated alkylene oxide compound (relative molecular mass is 2000) 60 kg

[0044] Primary amino-terminated alkylene oxide compound (relative molecular mass is 3000) 12 kg

[0045] chain extender 3000 20 kg

[0046] Color paste 8 kg

[0047] Prepare the A component isophorone diisocyanate of 100 kilograms simultaneously;

[0048] (2) Add the amino-terminated alkylene oxide compound, isophorone diamine, and chain extender into a stainless steel stirring tank at normal temperature and pressure, and stir at a medium speed (700-800 rpm) for 10 minutes;

[0049] (3) Reduce the stirring speed to low speed (300 rpm), slowly add color paste, and stir at high speed (1000 rpm) for 10 minutes to obtain component B;

[0050] (4) When ...

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PUM

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Abstract

The invention relates to a preparation method of an ultraviolet resistant spray polyurea elastomer material. The method comprises a preparation of components A and B. And the ultraviolet resistant spray polyurea elastomer material elastomer material is obtained by mixing the components A and B with the equal weight ratio, wherein, the A component is isophorone diisocyanate. Compared with the prior art, the spray polyurea elastomer material prepared by the inventive method has excellent performance, reasonable and simple preparation technology and especially excellent aging-resistant performance, in particular to the outdoor aging-resistant performance, the ultraviolet radiation-resistant performance, which is difficult to decompose or turn yellow and can maintain the original luster and the color for a long time. The spray polyurea elastomer material simultaneously has good corrosion resistant performance which can resist chemicals such as acid, alkali, salt, grease and so on.

Description

technical field [0001] The invention relates to a spray-coated polyurea elastomer material, in particular to a preparation method of an ultraviolet-resistant spray-coated polyurea elastomer material. Background technique [0002] Existing spray-coated polyurea elastomers are prone to yellowing when exposed to ultraviolet light. When used on exterior walls or roofs of buildings, they will quickly change color, which not only affects the appearance, but also accelerates the degradation of elastomer molecular segments, reducing the its physical properties. [0003] Therefore, it is urgent to develop a spray polyurea elastomer with excellent performance and UV resistance. Contents of the invention [0004] The object of the present invention is to provide a method for preparing a UV-resistant spray polyurea elastomer material with good aging resistance, strong corrosion resistance and long-term gloss retention in order to overcome the defects in the prior art. [0005] The p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/02C08G18/75C08G18/50
Inventor 邓庆仪董海普
Owner SHANGHAI WEIKAI CHEM