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A kind of preparation method of hybrid piezoelectric damping coating

A damping coating and piezoelectric technology, applied in powder coatings, anti-corrosion coatings, fire-resistant coatings, etc., can solve the problems of poor vibration and noise reduction effects, poor damping performance, etc., to reduce the emission of bad gases and improve the composite damping factor , Improve the coverage effect

Active Publication Date: 2021-08-03
河南飞皇绝热材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN103214913A discloses "an organic piezoelectric damping coating and its preparation method, an organic piezoelectric damping coating that consumes vibrational mechanical energy", but it only relies on the filling of piezoelectric ceramic powder in the coating, the damping performance is poor, and the vibration reduction drops The noise effect is not good

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A method for preparing a hybrid piezoelectric damping coating, comprising the following steps: 1. After uniformly mixing nylon 11 powder and vinyl ester resin that have been vacuum-dried at 70°C for 12 hours, extruding through twin-screws, the temperature of the heating section of the twin-screws is Set at 180~260°C, the extruded melt blend is drawn in the form of long fibers after water cooling, and then the nylon 11 long fibers are stretched 0.3~1 times in a hot water bath at 100°C, and then Nylon 11 micropowder is obtained by freezing ball milling; 2. Preparation of polyurethane prepolymer: mix polycarbonate polyol with 2,4,4-trimethyl-1,6 methylene diisocyanate, -NCO and - The ratio of OH is 2:1. Under the condition of nitrogen protection, add N-methyldicyclohexylamine accounting for 0.1% by weight of -NCO group, and react at 110°C for 9 hours to make polyether polyurethane Prepolymer: polyethylene adipate and toluene diisocyanate are mixed, the ratio of -NCO to -OH...

Embodiment 2

[0025]A method for preparing a hybrid piezoelectric damping coating, comprising the following steps: 1. After uniformly mixing nylon 11 powder and vinyl ester resin that have been vacuum-dried at 70°C for 12 hours, extruding through twin-screws, the temperature of the heating section of the twin-screws is Set at 180~260°C, the extruded melt blend is drawn into long fibers after water cooling, and then the nylon 11 long fibers are stretched twice in a hot water bath at 100°C, and then frozen Ball milling to obtain nylon 11 micropowder; 2. Preparation of polyurethane prepolymer: mix polycarbonate polyol with 2,4,4-trimethyl-1,6 methylene diisocyanate, mix -NCO and -OH The ratio is 2:1, under the condition of nitrogen protection, add N-methyldicyclohexylamine accounting for 0.05~0.1% by weight of -NCO group, and react at 90~110°C for 9 hours to make polyether type polyurethane prepolymer; polyethylene adipate and toluene diisocyanate are mixed, and the ratio of -NCO to -OH is 2:1...

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Abstract

The invention discloses a preparation method of a hybrid piezoelectric damping coating. The invention belongs to the technical field of coatings and relates to a preparation method of a nylon 11 / polyurethane blended piezoelectric damping coating. The coating is mixed with nylon 11 and polyester-polyether Type polyurethane composition, introducing nylon 11 blending modification to form an interpenetrating polymer network structure, the present invention is based on the study of piezoelectric material anisotropy and microstructure, aiming at perovskite structure piezoelectric ceramic inorganic matter and interpenetrating polymerization Piezoelectric matrix, using a unique process, prepared high-performance low-cost piezoelectric damping coatings, realized the composition design, microstructure modification and performance optimization of new piezoelectric damping coatings, and solved the few piezoelectric damping problems in the existing market. The dilemma of coatings provides the possibility to further meet the application of higher performance piezoelectric damping coatings.

Description

technical field [0001] The invention relates to the technical field of coatings, in particular to a preparation method of a hybrid piezoelectric damping coating. Background technique [0002] Piezoelectricity is a process in which a charge is induced on the surface of a material due to stress acting on the material. Generally, this process is reversible, that is, when the material is subjected to electrical parameters, the material will also generate deformation energy. Wood cellulose, tendon collagen, and various polyamino acids are common piezoelectric polymer materials, but their piezoelectric rates are too low to be useful. Damping paint is prepared by adding appropriate amount of fillers and auxiliary materials to polymer resin. It is a special paint that can be coated on the surface of various metal plate structures and has the effect of reducing vibration and noise. Compounds such as polyvinylidene fluoride have strong piezoelectric properties in organic polymer mate...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/04C09D175/06C09D177/02C09D7/61C09D7/63C09D5/08C09D5/03
CPCC08K2201/011C08L2201/08C08L2205/04C09D5/033C09D5/08C09D5/18C09D175/04C09D7/61C09D7/63C08L75/06C08L77/02C08K13/02C08K3/16C08K5/12C08K5/435C08K5/47
Inventor 严勇
Owner 河南飞皇绝热材料有限公司
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