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Heat insulation composite material and preparation method and application thereof

A technology of composite materials and mixtures, which is applied in the field of thermal insulation composite materials and their preparation, can solve the problems that the density and thermal conductivity cannot be effectively reduced, achieve remarkable material properties and process advantages, simple preparation methods, and broad market prospects Effect

Inactive Publication Date: 2021-09-07
BINZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to provide a heat-insulating composite material to solve the problem that most of the existing high-silica fiber-reinforced phenolic resin-based composite materials cannot effectively reduce the density and thermal conductivity proposed in the background technology

Method used

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  • Heat insulation composite material and preparation method and application thereof
  • Heat insulation composite material and preparation method and application thereof

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preparation example Construction

[0032] The embodiment of the present invention also provides a method for preparing a heat-insulating composite material. The method for preparing a heat-insulating composite material includes the following steps:

[0033] 1) Weigh the airgel micron particles in proportion and evenly disperse them in the adhesive resin to obtain the mixture;

[0034] 2) impregnating the high-silica material with the mixture, drying, and curing by hot pressing to obtain the heat-insulating composite material.

[0035] As another preferred embodiment of the embodiment of the present invention, in the preparation method of the heat-insulating composite material, the weighing of airgel micro-particles and uniform dispersion in the adhesive resin is realized by means of stirring, etc., Preferably, the adhesive resin is phenolic resin, and the airgel micron particles are dispersed in the phenolic resin by using a high-speed mixer under high-speed mechanical shearing. During the dispersion process, ...

Embodiment 1

[0047] A kind of thermal insulation composite material, its preparation method specifically comprises the following steps:

[0048] 1) Preparation of silica airgel micro-particles: Pre-fabricated bulk silica airgel is used to prepare silica airgel micro-particles by mechanical ball milling. The ball milling process is to set the speed of the ball mill to 400r / min, the ball material occupies 1 / 3-1 / 2 of the volume of the tank, the ball milling time is 40min, and finally obtains silica airgel micron particles with a median particle size of 10-20μm and a density of 0.06-0.09g / cm 3 , thermal conductivity is 0.015-0.02W·m -1 ·K -1 .

[0049] 2) Uniform dispersion of silica airgel micro-particles in phenolic resin: use a high-speed mixer to disperse silica airgel micro-particles in phenolic resin under high-speed mechanical shearing (silica airgel The amount of glue micron particles added accounted for 1.0wt% of the weight of the phenolic resin) to obtain a mixture. During the...

Embodiment 2

[0054] Compared with Example 1, it is the same as Example 1 except that the amount of silica airgel micro-particles added accounts for 0.8wt% of the weight of the phenolic resin.

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Abstract

The embodiment of the invention relates to the technical field of material modification, and particularly discloses a heat insulation composite material and a preparation method and application thereof. The heat insulation composite material comprises the following raw materials: aerogel micron particles, adhesive resin and a high silica material. According to the heat insulation composite material provided by the embodiment of the invention, through reasonable use of various raw materials, compared with a traditional method of adding hollow microspheres and a method of adding a pore-forming agent to reduce the density and the heat conductivity of the material, the performance and process advantages of the heat insulation composite material provided by the embod composite material are remarkable, the density and the heat conductivity of the material are effectively reduced, and the problem that the density and the heat conductivity of most of existing high-silica fiber reinforced phenolic resin-based composite materials cannot be effectively reduced is solved. Moreover, the preparation method of the heat insulation composite material provided by the embodiment of the invention is simple and has a wide market prospect.

Description

technical field [0001] The embodiment of the present invention relates to the technical field of material modification, specifically a thermal insulation composite material and its preparation method and application. Background technique [0002] With the continuous development of science and technology, there is a high demand for thermal insulation materials in the field of thermal protection of aerospace missiles and arrows. Among them, the high-silica fiber reinforced phenolic resin-based thermal insulation composite material is one of the main thermal protection materials in the field of aerospace missile thermal protection due to its simple preparation process and outstanding thermal protection performance, and has broad application prospects. [0003] At present, in order to meet the lightweight requirements, the existing high-silica fiber-reinforced phenolic resin-based thermal insulation composite materials commonly used methods to reduce density and thermal conducti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B26/12C04B26/20C04B26/10C04B38/08D06M15/41D06M11/79D06M101/30
CPCC04B26/122C04B26/20C04B26/10D06M15/41D06M11/79D06M2101/30C04B2201/20C04B2201/32C04B2201/50C04B14/38C04B24/302C04B24/28C04B14/02C04B14/30C04B14/303C04B14/064C04B14/04C04B38/08
Inventor 王彬
Owner BINZHOU UNIV
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