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Bi-component polyurea elastic material and application thereof

An elastic material, two-component technology, applied in the field of coatings, to achieve excellent flexibility and self-healing ability, improve the effect of stone chip resistance and corrosion resistance

Active Publication Date: 2021-12-31
上海库曜新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the oil resistance limitation of the existing zinc-aluminum coating, the object of the present invention is to provide a two-component polyurea elastic material and its application; the material can be used in conjunction with the zinc-aluminum coating primer to make the composite coating extremely Excellent resistance to stone chipping, the anti-corrosion performance of the composite coating hardly decreases after stone chipping

Method used

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  • Bi-component polyurea elastic material and application thereof
  • Bi-component polyurea elastic material and application thereof
  • Bi-component polyurea elastic material and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] The present embodiment relates to a kind of two-component polyurea elastic material (varnish), and its composition and quality consumption are as follows table 1:

[0044] Table 1

[0045]

[0046] Remark: 1 It is a self-synthetic resin synthesized according to the aforementioned method herein, with an amine equivalent of 280 g / mol.

[0047] 2,3 Purchased from Sinopharm

[0048]4 Evonik Hydrophobically Modified Fumed Silica

[0049] 5 Covestro's IPDI, NCO content 11.9%, NCO equivalent 353g / mol

[0050] 6,7 Purchased from Sinopec Shell

[0051] The performance test results are shown in Tables 2 and 3 below:

[0052] Table 2

[0053]

[0054] 1,2 The stone impact resistance is considered to be very good.

[0055] table 3

[0056]

[0057]

Embodiment 2

[0059] This embodiment relates to a two-component polyurea elastic material, and its composition and mass dosage are as follows in Table 4:

[0060] Table 4

[0061]

[0062] 1 Neuberger silica (kaolin) from HOFFMANN MINERAL, D50 2um

[0063] 2 Chemours Titanium Dioxide

[0064] 3 Other raw materials are the same as Table 1

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Abstract

The invention discloses a bi-component polyurea elastic material and application thereof. The polyurea elastic material comprises a component A and a component B; the component A comprises the following components in percentage by weight based on the total weight of the component A: 1-100% of amine polymer resin, 0-50% of pigment and filler, 0-10% of other auxiliaries and the balance of organic solvent; the component B comprises the following components in percentage by weight: 1-100% of IPDI (isophorone diisocyanate) tripolymer and the balance of organic solvent. During application, the component A and the component B are mixed according to a certain proportion and then are sprayed, dip-coated or brushed on paint or a metal substrate. The invention discloses a preparation method of the bi-component polyurea elastic material. The material can form a film through natural drying or thermocuring, and has excellent stone impact resistance and self-repairing capability; the material is matched with a zinc-aluminum coating primer for use, so that the stone impact resistance and the corrosion resistance of the composite coating can be greatly improved.

Description

technical field [0001] The invention belongs to the technical field of coatings, and relates to a two-component polyurea elastic material and its application; in particular, it relates to an extremely excellent stone chip resistance and self-repairing ability after the coating is cured, and it can be used together with a zinc-aluminum coating primer. A two-component polyurea elastic material that greatly improves the stone chip resistance and corrosion resistance of composite coatings and its application. Background technique [0002] At present, zinc-aluminum coatings on the market are commonly used as anti-corrosion coatings for parts such as automobiles or high-speed rail chassis, and have excellent anti-corrosion properties. However, the stone impact resistance of the zinc-aluminum coating is not good. When a car or high-speed rail hits a stone during driving, the zinc-aluminum coating will fall off, which will greatly reduce the corrosion resistance of the zinc-aluminum...

Claims

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Application Information

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IPC IPC(8): C09D175/02C08G18/64C08G18/79C09D5/08
CPCC09D175/02C09D5/08C08G18/6423C08G18/792
Inventor 姚下银王国强
Owner 上海库曜新材料有限公司
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