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Antistatic flexible polyurea composition, preparation thereof, construction method and applications

A composition, antistatic technology, applied in the direction of polyurea/polyurethane coatings, conductive coatings, coatings, etc., can solve the problems of limited application scope, antistatic properties, mixing and mechanical properties of polyurea elastomers are difficult to balance, etc. Achieve the effect of improving antistatic properties, ensuring storage stability, and improving the degree of mixing

Active Publication Date: 2009-01-07
MARINE CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The invention provides an antistatic flexible polyurea composition and its preparation, construction method and application, which can solve the difficulty in balancing the antistatic, mixing and mechanical properties of polyurea elastomers in the prior art, which makes its application Issues with limited scope

Method used

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  • Antistatic flexible polyurea composition, preparation thereof, construction method and applications
  • Antistatic flexible polyurea composition, preparation thereof, construction method and applications
  • Antistatic flexible polyurea composition, preparation thereof, construction method and applications

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Synthesis of component A: Add 49 parts of MDI-50 into the reaction kettle, fill it with nitrogen, stir at a constant speed, heat to 60°C, add 31 parts of polyol 220 to the kettle dropwise, keep it warm while stirring, after the dropwise addition, After heat preservation at 80°C for 3 hours, add 20 parts of antistatic agent, heat preservation for 1 hour, take a sample to measure the free isocyanate content (i.e. NCO%) is 15%, cool and discharge, which is the A component;

[0048] Prepare R component: 10 parts of JEFFAMINE T-5000, 32 parts of JEFFAMINE D-2000, 26 parts of diethyltoluenediamine (DETDA), 10 parts of conductive carbon black, 20 parts of conductive mica, 0.5 parts of Irganox 1076 and 0.5 parts Tinuvin 328 is composed of pigments, fillers, additives, antistatic agents, and part of the amino-terminated polyether on a three-roll machine. After the fineness reaches ≤45 μm, the grinding slurry is put into the reaction kettle, and the remaining amine-terminated poly...

Embodiment 2

[0054] Synthesize 49 parts of MDI-50, 31 parts of polyether polyol 220, and 20 parts of conductive mica according to the process in this patent to obtain a prepolymer with an NCO% of 15%, which is component A. R component is composed of 10 parts of JEFFAMINE T-5000, 32 parts of JEFFAMINE D-2000, 26 parts of DETDA, 30 parts of conductive mica, 0.5 part of Irganox 1076 and 0.5 part of Tinuvin 328. Than), spraying to form polyurea flexible material, its gel time is 9 seconds. The performance of the product is:

[0055]

Embodiment 3

[0057] Synthesize 44 parts of MDI-50, 36 parts of polyether polyol 220, and 20 parts of conductive mica according to the process in this patent to obtain a prepolymer with an NCO% of 13%, which is component A. R component is composed of 10 parts of JEFFAMINE T-5000, 39 parts of JEFFAMINE D-2000, 20 parts of DETDA, 10 parts of conductive carbon black, 20 parts of conductive mica, 0.5 parts of Irganox 1076 and 0.5 parts of Tinuvin 328. A and R components According to 1:1 (volume ratio), the polyurea flexible material is formed by spraying, and its gel time is 9 seconds. The performance of the product is:

[0058]

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Abstract

The invention provides an antistatic flexible polyurea composition and a preparation method, a construction method and an application thereof, which can solve the problem existing in the prior art that the antistatic property, the miscibility and the mechanical property of the polyurea elastomer are difficult to balance thereby resulting in the limited applied range. The invention has the technical schemes that an antistatic flexible polyurea composition is characterized in that the polyurea composition is composed of a component A and a component R; the component A is quasi-prepolymer which is synthesized by 30 to 50 portions of polyisocyanate, 20 to 40 portions of polyol and 10 to 30 portions of solid antistatic agents; the component R is composed of 5 to 30 portions of amine chain extenders, 40 to 60 portions of amine terminated polyether and 10 to 30 portions of antistatic agents; the components A, R are collated to use according to 1:1 of the isocyanate index. By the invention, not only the antistatic property of the polyurea elastomer is improved, but also the miscibility as well as the mechanical performance is integrally improved.

Description

technical field [0001] The invention belongs to the technical field of polyurea elastomers, and in particular relates to an antistatic flexible polyurea composition and its preparation, construction method and application. Background technique [0002] Spray polyurea elastomer technology uses amine-terminated polyether and amine chain extender as the active hydrogen component, which has high activity when reacting with isocyanate, and can be quickly cured and molded at room temperature without a catalyst. Compared with the traditional environment-friendly coating technology, spraying polyurea elastomer technology has the advantages of solvent-free, fast curing, insensitive to temperature and humidity, excellent physical and chemical properties, high temperature resistance, and aging resistance. Therefore, as soon as the technology came out, it has developed rapidly. [0003] The petrochemical industry is greatly threatened by static electricity. Petroleum products and thei...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08K3/04C08K3/34C08K5/41C08K5/20C08K5/52C08G18/10C08L75/02C09D175/02C09D5/24C09D5/08B29C41/08B05D7/24B05D1/02B29K75/00
Inventor 陈酒姜卢敏宋庆功
Owner MARINE CHEM RES INST
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