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A kind of anti-explosion and impact-resistant polyurea coating for aluminum foam and preparation method thereof

A technology of aluminum foam and impact resistance, which is applied in the field of preparation of functional coating materials, can solve the problems of weak interfacial bonding force, poor energy absorption effect, and large difference between soft and hard of polyurea coating materials, and achieve good impact resistance, Improve interface bonding force and good toughness

Active Publication Date: 2022-03-18
四川今朝耀欣新材料科技(集团)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the polyurea molecular chain can be adjusted from the rubber state to the glass state, the existing polyurea coating materials have a large difference in hardness and softness, and are mainly waterproof, and the energy absorption effect is poor.
At the same time, due to the existence of foamed aluminum cells, the interface between the existing polyurea coating materials and foamed aluminum has weak bonding force and poor adhesion.

Method used

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  • A kind of anti-explosion and impact-resistant polyurea coating for aluminum foam and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] This example provides an anti-explosion and impact-resistant polyurea coating material for foamed aluminum. The preparation raw materials and proportions are: A component by mass percentage, Wanhua isocyanate MDI-50 51 parts, Haian Petrochemical Co., Ltd. Polyoxypropylene glycol PPG-2000 46 parts, Qilu Petrochemical alkylene carbonate 3 parts; component B by mass percentage, amino-terminated polyether Jeffamine D-2000 60 parts, amino-terminated polyether Jeffamine T-5000 5 parts , Wanhua 3,5-diethyltoluenediamine E100 22 parts, Wanhua 4,4,-bis-sec-butylaminodiphenylmethane W6200 9 parts, leveling agent BYK-354 1 part, defoamer BYK- 0.8 part of 066N, 1 part of wetting and dispersing agent BYK-164, 0.7 part of Dow Corning coupling agent KH-550, 0.5 part of BASF antioxidant 1135.

[0028] The preparation method of the polyurea coating material used in this embodiment is as follows:

[0029] (1) Add polyoxypropylene glycol PPG-2000 to the reactor in parts by mass, dehydrat...

Embodiment 2

[0033] This example provides an anti-explosion and impact-resistant polyurea coating material for foamed aluminum. The preparation raw materials and proportions are: A component by mass percentage, Wanhua isocyanate MDI-50 50 parts, Mitsubishi polyurea Tetrahydrofuran diol PTMG-100045 parts, Qilu Petrochemical alkylene carbonate 5 parts; B component by mass percentage, amino-terminated polyether Jeffamine D-200058 parts, amino-terminated polyether Jeffamine T-5000 5 parts, Wanhua 3 , 20 parts of 5-diethyltoluenediamine E100, 13 parts of Wanhua 4,4,-bis-sec-butylaminodiphenylmethane W6200, 1 part of leveling agent BYK-354, 0.8 parts of defoamer BYK-066N, Wetting and dispersing agent BYK-164 1 part, Dow Corning coupling agent KH-550 0.7 part, BASF antioxidant 1135 0.5 part.

[0034]The preparation method of the polyurea coating material used in this embodiment is as follows:

[0035] (1) Add polytetrahydrofuran glycol PTMG-1000 to the reaction kettle in parts by mass, dehydrate...

Embodiment 3

[0039] This example provides an anti-explosion and impact-resistant polyurea coating material for foamed aluminum. The preparation raw materials and proportions are: A component by mass percentage, Wanhua isocyanate MDI-50 47 parts, Bayer polyurea Ether polyol Acclaim 420050 parts, Qilu Petrochemical alkylene carbonate 3 parts; B component by mass percentage, amino-terminated polyether Jeffamine D-200053 parts, amino-terminated polyether Jeffamine T-5000 6 parts, Wanhua 3, 17 parts of 5-diethyltoluenediamine E100, 20 parts of Wanhua 4,4,-bis-sec-butylaminodiphenylmethane W6200, 1 part of leveling agent BYK-354, 0.8 parts of defoamer BYK-066N, moisturizing Wet dispersant BYK-164 1 part, Dow Corning coupling agent KH-550 0.7 part, BASF antioxidant 1135 0.5 part.

[0040] The preparation method of the polyurea coating material used in this embodiment is as follows:

[0041] (1) Add polyether polyol Acclaim 4200 to the reaction kettle in parts by mass, dehydrate under reduced pre...

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Abstract

The invention provides an anti-explosion and impact-resistant polyurea coating that can be better adhered to the surface of foamed aluminum and a preparation method thereof, which belongs to the cross field of polymer synthesis and explosion impact dynamics. The coating is composed of component A of isocyanate semi-prepolymer, component B composed of amino-terminated polyether, amine chain extender and auxiliary agent, and is sprayed by high temperature and high pressure collision atomization mixing process. The A component is formed by reacting 47-53 parts by mass of isocyanate, 45-50 parts by mass of polyether polyol and 3-5 parts by mass of reactive diluent through heating, vacuum dehydration and other processes; the component B is composed of 58-66 parts by mass It is prepared by mixing parts by mass of amino-terminated polyether, 30-38 parts by mass of liquid amine chain extender, and 3-5 parts by mass of additives, and vacuum dehydrating. The polyurea coating synthesized by the invention has high strength, good toughness, and good impact resistance, and has strong interfacial adhesion with the foamed aluminum material, and can be coated on the surface of the foamed aluminum to form a composite protective armor structure. There is a broad application space for weapon preparation and military-civilian dual-use engineering protection facilities.

Description

technical field [0001] The invention belongs to the field of preparation of functional coating materials, in particular to an anti-explosion and impact-resistant polyurea coating applied to foamed aluminum and a preparation method thereof. Background technique [0002] Due to natural disasters or wars, common structures in people's lives are often subjected to explosive impact loads, such as building structures, automobile structures, and aircraft structures. The acting time of these loads is very short, usually causing rapid changes in the structural response in a short period of milliseconds, microseconds, or even nanoseconds, thus causing huge damage to the structure. Sudden damage to structures will cause a large number of casualties and property losses. Improving the protection performance of structures under the impact of explosions has become a hot and difficult research topic in the field of disaster prevention and mitigation. In today's society, most protective str...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/02C08G18/76C08G18/66C08G18/48C08G18/50C08G18/32C08G18/12B05D7/16
CPCC09D175/02C08G18/7671C08G18/6666C08G18/4825C08G18/4854C08G18/48C08G18/12C08G18/5024B05D7/16B05D2518/00C08G18/324C08G18/3243
Inventor 郭辉卢春江陈玉顾蒙蒋林志凌星鹏姜欣怡
Owner 四川今朝耀欣新材料科技(集团)有限公司
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