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Microcapsule vitrified fireproof paint and preparation technology thereof

A technology of fire-resistant coatings and microencapsulation, applied in fire-resistant coatings, epoxy resin coatings, coatings, etc., can solve the problems of reduced heat conduction value, single structure and function, and limited fire resistance, so as to improve uniformity, reduce diffusion, Partition uniform effect

Pending Publication Date: 2019-07-26
张志广
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The current fireproof materials must take into account the requirements of both flame retardancy and environmental protection. They are low-smoke, low-toxicity, and halogen-free. The distance between them can reduce the heat conduction value, and if necessary, it will fall off from the substrate to avoid the spread of fire. Some existing fire retardant coatings have a single structure and function, and can only form a partition on the surface to avoid direct heat conduction with the substrate, but their fire resistance Limited resistance, unable to fall off by itself at high temperature, preventing fire from spreading

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A kind of microcapsule ceramicized fireproof coating of the present invention, comprises base material and filler, and described base material comprises epoxy resin 70 parts, glass fiber modified epoxy resin 70 parts, microencapsulated flame retardant 25 parts and foaming agent 11 parts, the above parts are all by weight.

[0039] The filler includes 5.5 parts of wollastonite, 6.2 parts of glass fiber, 3 parts of mica, 7.8 parts of aluminum hydroxide, 2.6 parts of titanium dioxide, 3.2 parts of silicon release agent, 5.5 parts of dispersant and 3 parts of pyrophyllite powder, the above parts Numbers are by weight.

[0040] The massfraction of glass fiber in described glass fiber modified epoxy resin is 26.2%;

[0041] The glass fiber modified epoxy resin is prepared by a sol-gel method;

[0042] The preparation process of the microencapsulated flame retardant is as follows:

[0043] a. Mix tributyl phosphate and aluminum hydroxide in a mass ratio of 1.7:2 to prepare ...

Embodiment 2

[0061] Compared with Example 1, the difference of Example 2 is: in the preparation process of the microencapsulated flame retardant, the change of component selection:

[0062] a. Mix ammonium polyphosphate and aluminum hydroxide in a mass ratio of 2.2:2 to prepare a halogen-free flame retardant. Take 5.3g of the halogen-free flame retardant and evenly disperse it in 65ml of acetone, and then transfer it to a In the four-neck flask with mechanical stirring and condenser, the stirring speed is 400r / min±50r / min and heated to 55°C±5°C, dropwise add 15ml of acetone solution containing 0.3g of hydrogenated diphenylmethane diisocyanate, After the dropwise addition was completed, 0.03 g of dicyandiamide was gradually added to the system, and the reaction was continued for 8.5 hours before heating and stirring were stopped.

[0063] b. Vacuum suction filtration, wash twice with acetone, then rinse twice with slightly hot distilled water, collect the filter cake, and dry it in a consta...

Embodiment 3

[0069] Compared with Example 1, the difference of Example 3 is: in the preparation process of the microencapsulated flame retardant, the change of component selection:

[0070] a. Mix ammonium phosphate and ferric hydroxide in a mass ratio of 3:2 to prepare a halogen-free flame retardant. Take 5.3g of the halogen-free flame retardant and disperse it evenly in 65ml of xylene, and then transfer it to a In the four-neck flask with mechanical stirring and condenser, the stirring speed is 420r / min and heated to 55°C±5°C, dropwise add 15ml of xylene solution containing 0.3g of hydrogenated diphenylmethane diisocyanate, and wait for dropwise addition After the end, gradually add 0.03g of dicyandiamide to the system, continue the reaction for 8.5 hours, then stop heating and stirring.

[0071] b. Vacuum suction filtration, wash twice with xylene, then rinse twice with slightly hot distilled water, collect the filter cake, dry in a constant temperature vacuum drying oven at 50°C for 13...

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Abstract

The invention discloses microcapsule vitrified fireproof paint and a preparation technology thereof. According to the paint, fire retardants are microencapsulated and externally wrapped with a vitrified outer layer, a ceramic shell is formed at high temperature, and fire separation is performed by the aid of an internal foaming structure. High-temperature foaming is performed by foaming agents, sothat a cavity is formed between the paint and a substrate, and heat conduction is decreased. The fireproof paint is characterized by comprising base materials and fillers, wherein the base materialsinclude, by weight, 60-80 parts of epoxy resin, 60-80 parts of glass fiber modified epoxy resin, 20-30 parts of microencapsulated fire retardants and 10-15 parts of foaming agents.

Description

technical field [0001] The invention relates to a microcapsule ceramicized fireproof coating and a preparation process thereof, which relates to a fireproof coating capable of forming granular ceramics on the surface after encountering high temperature, and belongs to the field of surface engineering. In particular, it relates to a coating that microencapsulates the flame retardant, wraps the outside of the flame retardant with an outer layer that can be ceramicized, forms a ceramic shell at high temperature, and combines the internal foam structure for isolation and fire prevention. Background technique [0002] At present, epoxy resin has excellent bonding properties, mechanical properties, corrosion resistance and heat resistance properties. It can be used as coatings, adhesives and molding materials, and is widely used in aerospace, electronic and electrical, engineering technology, civil construction and cultural and sports. Products manufacturing and other fields, amon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D5/18C09D7/61
CPCC08K2003/2227C08K2003/2241C08K2201/014C08L2201/02C08L2201/08C08L2205/025C09D5/18C09D7/61C09D7/70C09D163/00C08L63/00C08K13/06C08K9/10C08K5/521C08K3/22C08K3/34C08K7/14
Inventor 不公告发明人
Owner 张志广
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