A heat insulating filler, its use and preparation method

A technology of thermal insulation filler and ceramic hollow microbeads is applied in the field of thermal insulation filler, which can solve the problems of inability to meet the practical application requirements of industrial production, many raw materials, complicated processes, etc., and achieves elimination of free air layer, simple treatment method, and reduced thermal conductivity. The effect of coefficient resistance

Active Publication Date: 2021-03-16
AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since this method requires more raw materials, and requires high and low temperature treatment, the process is more complicated and the cycle is longer, it cannot meet the actual application requirements of industrial production.

Method used

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  • A heat insulating filler, its use and preparation method
  • A heat insulating filler, its use and preparation method
  • A heat insulating filler, its use and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The opal shale ore is crushed, pulverized, ground and separated to produce opal masterbatches with a diameter of about 100um (ceramic hollow microspheres are generally 10-30um in diameter), and the opal masterbatches are dried at 120°C for 2 hours , the dried opal masterbatch and ceramic hollow microspheres were mixed in a high-speed mixer for 2 hours to make them uniform, and after standing for 30 minutes to cool, the mixture was sieved to separate the ceramic hollow microspheres.

Embodiment 2

[0023] The ceramic hollow microspheres made by Example 1 are added to the following ablation-resistant materials, and the specific proportioning (mass ratio) is as follows:

[0024]

[0025] preparation:

[0026] 1) Weigh 10kg of phenolic resin and add it to a reaction kettle preheated to 65°C and stir for 30 minutes, add 50g of toughening agent and stir for 10min, add 1kg of ceramic hollow microspheres and stir for 10min, add 500g of phenolic hollow microspheres and stir for 10min, and wait in the reaction kettle Finally, stir evenly and take the resin out of the sealed bag and freeze it for later use.

[0027] 2) Fabric: Choose 85tex C-type quartz glass fiber, spiral curly phenolic fiber 20S / 3, aramid fiber-Kevlar K49 and weave according to the quantity ratio (number ratio) of 1:1:1, and weave the yarn Warp and weft density: 9 threads / cm, area density 150g / ㎡.

[0028] The resin in step 1) and the fabric in step 2) are made into a prepreg with a resin content of 40%, and...

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Abstract

The invention provides a heat-insulating filler and an application and preparation method thereof. ceramic hollow beads and an inorganic masterbatch are blended, so that static air or vacuum in and between the beads is avoided, and however, equally charged ions are present in and between the beads; electromagnetic wave emitted by the equally charged ions can effectively screen the electromagneticwave of heat, heat transfer can be effectively prevented, a free air layer is completely eliminated, heat conduction coefficient resistance is decreased, heat insulation is improved, and ant-radiationcapacity of the surface of an ablative material is improved.

Description

technical field [0001] The invention relates to a thermal insulation filler, its application and a preparation method, and belongs to the technical field of functional fillers. Background technique [0002] Thermal insulation coating is a new type of functional coating developed in the past 20 to 30 years. According to the different thermal insulation mechanisms, thermal insulation functional fillers can usually be divided into barrier functional fillers, solar reflection functional fillers and radiation functional fillers. . The heat insulation effect of a single heat insulation method is limited, and the composite heat insulation functional filler can achieve a satisfactory heat insulation effect. Fillers that take into account both heat insulation methods have been widely used. [0003] After the fine powder is suspended and melted in the high-temperature airflow or the melt is atomized in the high-pressure airflow, due to its own surface tension, it will condense to for...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08K7/24C08K3/36C08L61/06C08J5/24
Inventor 谢永旺许学伟许孔力
Owner AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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