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Aliphatic spray polyurea elastomer, preparation and construction method thereof

A polyurea elastomer and aliphatic technology, which is applied in the field of aliphatic sprayed polyurea elastomer and its preparation, can solve the problems of low comprehensive physical properties, poor gloss and color retention, and achieve UV stability and gloss retention Excellent color retention and dense coating effect

Inactive Publication Date: 2008-11-12
青岛佳联化工新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The invention provides an aliphatic spray-coated polyurea elastomer and its preparation method and construction method, which can solve the problems of poor gloss and color retention and low comprehensive physical properties in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Component A: Synthesis of Aliphatic Prepolymers

[0045] Add 48 parts of isophorone diisocyanate (IPDI) into the reaction kettle protected by nitrogen, stir at a constant speed, heat to 55°C, slowly add 52 parts of polyether polyol TDiol-2000 and 0.01 part of octanoic acid sulfide into the reaction kettle Tin was incubated and reacted at 80-90° C. for 3 hours, sampled and analyzed, and the free isocyanate content in the obtained semi-prepolymer was measured to be between (13.5 ± 0.2) %, and the material was cooled and discharged.

[0046] B component formula table

[0047] Composition

Content (weight percent)

D-2000

44.5

T-5000

9.6

Polyclear TM 136

24.5

Clearlink TM 1000

15.4

IRGANOX1076

0.5

UV-P

0.5

TiO 2

5

total

100

[0048] B component preparation:

[0049] First mix 5 parts of titanium dioxide with 5 parts D-2000 is mixed evenly ...

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PUM

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Abstract

The invention provides an aliphatic spray coating polyurea elastomer, a method for preparing the same and a construction method for the same, which can solve the problems in the prior art of poor gloss and color retention and low comprehensive physical property. The invention adopts the technical proposal that: the aliphatic spray coating polyurea elastomer comprises a composition A and a composition R, wherein, the composition A is polyisocyanate prepolymer obtained through synthesis of 25 to 55 portions of aliphatic polyisocyanate and 45 to 75 portions of polyether glycol; the composition R comprises 35 to 55 portions of amine chain extender and 45 to 65 portions of polyether polyamines; and the composition A and the composition A are matched for use according to the isocyanate index between 0.9 and 1.2. The aliphatic spray coating polyurea elastomer material has good overall mechanical strength, stable ultraviolet resistance and excellent gloss and color retention.

Description

technical field [0001] The invention belongs to the field of anti-corrosion coating finish paint, in particular to an aliphatic spray-coated polyurea elastomer and a preparation method and a construction method thereof. Background technique [0002] In the domestic market, the spray polyurea elastomers are dominated by aromatic spray polyurea elastomers. Aliphatic sprayed polyurea elastomer is still in the research and development stage, and there are occasional introductions of related patents abroad, but the physical properties of the aliphatic sprayed polyurea elastomer material obtained according to these patents are still not very satisfactory. [0003] US Patent No. 5,162,388 discloses an aliphatic spray polyurea elastomer. This patent uses an alicyclic diamine as a chain extender to improve the physical properties and operability of the sprayed elastomer. The patent selects aliphatic diamines as chain extenders from 1,4-cyclohexyldiamine, isophoronediamine, 4,4'-dic...

Claims

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Application Information

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IPC IPC(8): C09D175/02C09D7/12B05D1/02B05D1/34B05D7/24
Inventor 刘培礼王宝柱胡松霞刘东晖崔洪犁
Owner 青岛佳联化工新材料有限公司