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A kind of polyphosphazene composite practical coating with high flame retardancy and scratch resistance for automobiles

A high flame-retardant and scratch-resistant technology, applied in polyester coatings, powder coatings, fire-resistant coatings, etc., to achieve high mechanical properties, improve dispersion stability, and improve mechanical properties

Active Publication Date: 2018-05-11
南通新泊地分析技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the development of multifunctional automotive coatings is still relatively small, especially powder coatings that meet practical properties such as flame retardancy and scratch resistance, and have not been reported yet.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0077] In one embodiment, the filler is polyphosphazene microspheres with a particle size in the range of 1-20 μm. Polyphosphazene microspheres are prepared by the following methods:

[0078] (1) Select hexachlorocyclotriphosphazene and 4,4'-dihydroxydiphenyl sulfone as functional monomers;

[0079] (2) Weigh hexachlorocyclotriphosphazene and 4,4'-dihydroxydiphenylsulfone with a molar ratio of 1:3, dissolve them in acetonitrile, and stir at room temperature for 30 minutes;

[0080] (3) Choose triethylamine as the acid-binding agent; add 1% triethylamine to the above system, and keep stirring;

[0081] (4) The reaction time is 2-10 hours.

[0082] Another aspect of the present invention provides the preparation method of the high flame-retardant and scratch-resistant polyphosphazene composite coating for automobiles, comprising the following steps:

[0083] (1) Among the raw materials: epoxy resin, nano-silica, curing agent triglycidyl isocyanurate, curing agent hydroxyalkyl...

Embodiment 1

[0088] Unsaturated carboxy-terminated polyester 46

[0089] epoxy resin 14

[0090] Triglycidyl isocyanurate 2

[0091] Hydroxyalkylamide 1

[0092] Silicone 9

[0093] Filler 16

[0094] Zinc stearate 0.5

[0095] paint 4

[0096] Auxiliary 1;

[0097] A high flame-retardant and scratch-resistant powder coating for automobiles, including the above-mentioned raw material ratio, put the weighed raw materials into a high-speed mixer for pre-mixing, melt extrusion and mixing with an extruder, and then cool Broken into paint flakes, then finely pulverized by an air classifying mill, and separated by a sieve to a powder with an average particle size of 30-40 microns, the present invention is obtained; the present invention is tested under the baking and curing condition: 200°C / 10min , its coating performance reaches impact strength of 60Kg·cm, flexibility of 1.5mm, artificial weather aging resistance of 1200h, high temperature resistance of 600°C, forming a blocking layer, a...

Embodiment 2

[0099] Unsaturated carboxy-terminated polyester 46

[0100] epoxy resin 14

[0101] Triglycidyl isocyanurate 2

[0102] Hydroxyalkylamide 1

[0103] Silicone 5

[0104] Filler 16

[0105] Zinc stearate 0.5

[0106] paint 4

[0107] Auxiliary 1;

[0108] Compared with the first embodiment, this embodiment is different in that the content of nano silicon dioxide is reduced. A high flame-retardant and scratch-resistant powder coating for automobiles, including the above-mentioned raw material ratio, put the weighed raw materials into a high-speed mixer for pre-mixing, melt extrusion and mixing with an extruder, and then cool Broken into paint flakes, then finely pulverized by an air classifying mill, and separated by a sieve to a powder with an average particle size of 30-40 microns, the present invention is obtained; the present invention is tested under the baking and curing condition: 200°C / 10min , its coating performance reaches impact strength of 58Kg·cm, flexibility...

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Abstract

The invention discloses a high-fire-retardant scratch-resistant practical coating for an automobile. The coating is prepared from unsaturated carboxyl-terminated polyester, epoxy resin, triglycidyl isocyanurate, hydroxyl alkyl amide, organic silicon, fillers, zinc stearate, pigment, polyphosphazene and the like. The invention further discloses a preparation technology of the high-fire-retardant scratch-resistant practical coating for the automobile.

Description

technical field [0001] The invention belongs to the technical field of chemical paint processing, and more specifically, the invention relates to a highly flame-retardant and scratch-resistant polyphosphazene composite practical paint for automobiles and a preparation method thereof. Background technique [0002] In recent years, especially with the development of more lightweight and energy-saving power systems, the automobile market has developed unprecedentedly. With the rapid development of global industry, environmental problems have become increasingly prominent. How to carry out environmental protection work has become an important problem to be solved urgently. However, traditional solvent-based automotive coatings use a large amount of toxic and harmful organic solvents. Not only will it cause huge health damage to employees during the processing and painting process, but it will still produce volatile organic components (VOC) in the later use. At present, in ord...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D167/06C09D163/00C09D5/18C09D5/03C09D7/63C09D7/61C09D7/65C08G79/025
CPCC08G79/025C08K2201/011C08L2201/02C08L2205/03C09D5/033C09D5/18C09D167/06C08L63/00C08L85/02C08K13/02C08K3/36
Inventor 蔡文剑陶忠谢正鹏王小进储晨杰
Owner 南通新泊地分析技术有限公司
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