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Explosion-proof polyurea material and preparation method thereof

A polyurea and prepolymer technology, used in polyurea/polyurethane coatings, coatings, etc., can solve the problems of fast curing reaction speed, high viscosity and large volume, and achieve slow reaction speed, low viscosity and low viscosity. Effect

Inactive Publication Date: 2019-09-13
QINGDAO AIR NEW MATERIALS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high viscosity and fast curing reaction speed of traditional polyurea materials, large-scale equipment is required for spraying construction
The traditional spraying equipment is bulky (height 1.62 meters, width 0.95 meters, thickness 0.53 meters), heavy (272 kilograms), and needs to be equipped with a compressed air power source with a pressure of 9Kg and a flow rate of 1m3 / min. In terms of power supply, a total power of 50KW is required The above are not suitable for construction in small spaces and rapid response conditions in the field, thus limiting its popularization and application

Method used

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  • Explosion-proof polyurea material and preparation method thereof
  • Explosion-proof polyurea material and preparation method thereof

Examples

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preparation example Construction

[0027] see figure 1 , the preparation method of a kind of explosion-proof polyurea material provided by the present invention, comprises the following steps:

[0028] Step S110: In an inert environment, stir and heat the polyol to 95°C-100°C, dehydrate it under vacuum -0.1MPa for 4-6 hours, release the vacuum, lower the temperature to below 40°C, add polyisocyanate, and react at 80°C for 2- 4h, after the reaction is over, cool down to below 60°C and add diluent, stir and measure the -NCO value, then discharge, and filter to obtain component A of the isocyanate-terminated prepolymer; wherein, the polyol, polyisocyanate and diluent The mass ratio is 100:(300~500):(0~15);

[0029] Step S120: According to the mass ratio (30-60): (0-40): (0-20): (20-35): (1-2): (0-0.5): (1-5): ( 1-5) Stir and filter the amino-terminated polyether, polyol, polyaspartate, chain extender, weather resistance additive, catalyst, water remover and color paste to obtain component B;

[0030] The volume...

Embodiment 1

[0045] The preparation process of the slow-response high-performance explosion-proof polyurea material in this example is as follows:

[0046] (1) Preparation of component A prepolymer: Put 100 parts of PTMEG1000 into a reactor protected by nitrogen gas, heat to 95°C~100°C under stirring, dehydrate under vacuum -0.1MPa for 4h, release the vacuum, and lower the temperature Add 100 parts of IPDI to below 40°C, react at 80°C for 3 hours, after the reaction, cool down to below 60°C, add 10 parts of propylene carbonate, stir for 10 minutes, measure -NCO value, discharge, filter and pack to obtain -NCO content 14% isocyanate prepolymer.

[0047] (2) Preparation of component B: Weigh the components according to the order of the formula, 30 parts of amino-terminated polyether D2000, 20 parts of PTMEG1000, 10 parts of polyaspartic acid ester F420, 2 parts of light stabilizer 770, 35 parts The chain extender Clearlink1000, 0.1 parts of catalyst bismuth isooctanoate, 5 parts of 3A molec...

Embodiment 2

[0049] The preparation process of the slow-response high-performance explosion-proof polyurea material in this example is as follows:

[0050] (1) Preparation of A-component prepolymer: put 100 parts of Fomrez111-56 into a reactor protected by nitrogen gas, heat to 95°C~100°C under stirring, dehydrate under vacuum -0.1MPa for 6h, and release the vacuum , add 130 parts of HMDI after cooling down to below 40°C, and react at 80°C for 3 hours. After the reaction, cool down to below 60°C and add 20 parts of ethyl carbonate (EC), stir for 10 minutes to measure -NCO value, then discharge, filter and pack. An isocyanate prepolymer with an -NCO content of 13.3% was obtained.

[0051] (2) Preparation of component B: Weigh each component according to the order of the formula, mix 60 parts of amino-terminated polyether D2000, 20 parts of polyaspartate NH2850, 1 part of UV-1164, 20 parts of chain extender Unilink4200, Put 1 part of 4A molecular sieve and 5 parts of color paste into the st...

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Abstract

An explosion-proof polyurea material provided by the invention comprises a component A and a component B, and the slow-reaction and low-viscosity component A of the explosion-proof polyurea material is prepared by polymerizing aliphatic isocyanate having a low reactivity and a polyol and controlling the isocyanate (-NCO) content in a suitable range; and the low-viscosity, low-reactivity and high-strength component B of the explosion-proof polyurea material is prepared by using slow-reactivity fatty amine or / and aliphatic polyol having a sterically hindered structure as a chain extender, addinga low-reactivity polyol resin and a low-viscosity polyaspartate and adding various additives for adjusting the properties. The explosion-proof polyurea material provided by the invention has the characteristics of low viscosity, slow reaction speed and high strength, can be sprayed by a small static mixing device, does not require a traditional large-scale special spraying device, and is very flexible and convenient to use, so the applicable range of the explosion-proof polyurea material is greatly expanded.

Description

technical field [0001] The invention relates to the technical field of explosion-proof material compositions, in particular to an explosion-proof polyurea material, a preparation method and an application thereof. Background technique [0002] At present, the imbalance of regional development and the further intensification of local conflicts in the world, coupled with the increasingly severe situation of military conflicts and anti-terrorism around the world, the market urgently needs a large amount of military protective equipment and protective armor. The research and development and production of bulletproof and explosion-proof materials reflect the military strength of the country and are an important guarantee for maintaining national security and national peace. With the sharp increase in domestic and foreign market demand, the development and application of high-performance bulletproof and explosion-proof materials is imminent. [0003] In the research of high-perfo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/75C08G18/48C08G18/42C08G18/44C08G18/10C08G18/66C08G18/50C08G18/64C08G18/32C08G18/38C09D175/02
CPCC08G18/10C08G18/42C08G18/4277C08G18/44C08G18/4825C08G18/4854C08G18/751C08G18/753C08G18/755C08G18/758C09D175/02C08G18/5024C08G18/6415C08G18/3234C08G18/325C08G18/3857
Inventor 王宝柱温喜梅王伟李灿刚邵春妍岳长山
Owner QINGDAO AIR NEW MATERIALS
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