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Polyaspartic acid ester polyurea composite material and preparation method thereof

A technology of polyaspartate and composite materials, applied in the field of special protective materials

Active Publication Date: 2019-09-20
QINGDAO AIR NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At present, polyaspartic ester polyurea is mostly used in the coating field, and the polyaspartic ester polyurea elastomer compounded with fiber fabrics is used in bullet-proof explosion-proof energy-absorbing composite materials, and there are no relevant reports.

Method used

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  • Polyaspartic acid ester polyurea composite material and preparation method thereof
  • Polyaspartic acid ester polyurea composite material and preparation method thereof
  • Polyaspartic acid ester polyurea composite material and preparation method thereof

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preparation example Construction

[0035] see figure 1 , a flow chart of the steps for the preparation method of a polyaspartate polyurea composite material provided by the invention, comprising the following steps:

[0036] Step S110: preparing polyaspartic acid ester;

[0037] In some preferred embodiments, in the step of preparing polyaspartic acid ester, the following steps are specifically included:

[0038] Under an inert gas environment, the aliphatic diamine and the alkyl maleic acid ester are mixed and reacted for 12 to 24 hours to obtain the polyaspartic acid ester, wherein:

[0039] The aliphatic diamines include ethylenediamine, butylenediamine, hexamethylenediamine, methylpentanediamine, isophoronediamine, 4,4,-diamino-dicyclohexylmethane (HMDA), 3, At least one of 3,-dimethyl-4,4,-diaminodicyclohexylmethane and methylcyclohexanediamine;

[0040]The alkyl maleate includes at least one of dimethyl maleate, diethyl maleate, dipropyl maleate, dibutyl maleate and diphenyl maleate.

[0041] It can b...

Embodiment 1

[0063] Synthesis of HMDA / DEM type polyaspartate:

[0064] (1) In a 1000ml four-necked flask equipped with a stirrer, a thermometer, a nitrogen tube inlet, and a dropping funnel, add 210 grams (1mol) of 4,4,-diaminodicyclohexylmethane (HMDA), start stirring and pass into nitrogen.

[0065] (2) Slowly add 344 grams (2mol) of diethyl maleate (DEM) dropwise from the dropping funnel, keep the temperature at 40°C±°C, finish the dropwise addition within 2h, heat the oil bath to 90°C-100°C, and react 12~16h.

[0066] (3) Measure the degree of unsaturation by mercaptan-iodine titration analysis method to determine the degree of chemical reaction. After the reaction is completed, cool down and discharge the material.

[0067] The main technical parameters:

[0068] parameter index Appearance (visual inspection) yellowish transparent liquid Solid content, % ≥95％ NH equivalent, g / mol 277 Viscosity, mPa·s / 25℃ 1100～1500

Embodiment 2

[0070] Synthesis of IPDA / DBM type polyaspartate:

[0071] (1) In a 1000ml four-neck flask equipped with a stirrer, a thermometer, a nitrogen tube inlet, and a dropping funnel, add 170 grams (1mol) of isophoronediamine (IPDA), start stirring and feed nitrogen.

[0072] (2) Slowly add 456 g (2 mol) of dibutyl maleate (DBM) dropwise from the dropping funnel, keep the temperature at 55°C to 65°C, add dropwise within 30min to 60min, and react for 24h.

[0073] (3) Measure the degree of unsaturation by mercaptan-iodine titration analysis method to determine the degree of chemical reaction. After the reaction is completed, cool down and discharge the material.

[0074] The main technical parameters:

[0075] parameter index Appearance (visual inspection) yellowish transparent liquid Solid content, % ≥95％ NH equivalent, g / mol 313 Viscosity, mPa·s / 25℃ 800～1100

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Abstract

The invention discloses a preparation method of a polyaspartic acid ester polyurea composite material. The composite material is prepared by compounding an explosion-proof polyaspartic acid ester polyurea elastomer and a porous energy-absorbing fiber fabric mesh cloth, the polyaspartic acid ester polyurea elastomer is anti-explosive, wear-resistant, impact-resistant and fatigue-resistant, and is an energy-absorbing reinforcing material, the porous fiber fabric mesh cloth is light, energy-absorbing, vibration-reducing and tear-resistant, and is an energy-absorbing reinforcing material, the polyaspartic acid ester polyurea composite material obtained by compounding the explosion-proof polyaspartic acid ester polyurea elastomer and the porous energy-absorbing fiber fabric mesh cloth has properties such as explosion resistance, energy-absorbing properties, vibration-reducing properties and impact resistance, can be used in military facilities and explosion-proof energy-absorbing protective equipment, can resist shock waves and debris generated by explosion, and meets basic requirements of military equipment.

Description

technical field [0001] The present invention relates to the technical field of special protective materials, in particular to a preparation method of a polyaspartic ester polyurea composite material and polyaspartic acid prepared by the preparation method of the polyaspartic ester polyurea composite material Urethane polyurea composite. Background technique [0002] Explosion-proof energy-absorbing composite material is a special protective material in the field of national defense and military industry. It can be widely used in military facilities and important landmark buildings. Bullet-proof and explosion-proof can effectively resist the shock waves and fragments of explosives, and can effectively deal with emergencies such as terrorist attacks. . At present, explosion-proof polyurea materials mostly adopt the all-polyurea route of amino-terminated polyether and amine chain extender, and porous energy-absorbing materials mostly use foam, fiber fabric or honeycomb materia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/48C08G18/64C08G18/10C08G18/32C08L75/08C08G73/00
CPCC08G18/10C08G18/4854C08G18/6415C08G18/6685C08G73/00C08L75/08C08G18/64C08G18/3234
Inventor 王宝柱王伟温喜梅岳长山李灿刚王玲玲赵成文
Owner QINGDAO AIR NEW MATERIALS
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