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A kind of thermal decomposition material and preparation method thereof

A technology of thermal decomposition and functional materials, applied in the preparation of microspheres, microcapsule preparations, etc., can solve the problems of the limited size of flexible cotton felt, limited effect, difficult to coat in local areas, etc., and achieve low thermal conductivity and excellent heat absorption performance. , reduce the effect of convective heat transfer

Active Publication Date: 2021-10-22
AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the development of technology, there are a large number of equipment parts on the ship, which will emit a lot of heat during work, causing the equipment to fail to work normally. Therefore, certain protective measures must be taken for the equipment parts
[0003] At present, equipment parts are generally covered with flexible cotton felt directly. However, this method has limited effect and is limited by the structural size of the equipment parts. Due to the limitation of specifications, the flexible cotton felt cannot meet the requirements of equipment parts

Method used

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  • A kind of thermal decomposition material and preparation method thereof
  • A kind of thermal decomposition material and preparation method thereof
  • A kind of thermal decomposition material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] see figure 1 , the preparation method of the thermal decomposition material provided in this embodiment is as follows:

[0064] The first step is to prepare thermally decomposed filler microcapsules;

[0065] A1.1, mechanically pulverize magnesium hydroxide to 50 μm;

[0066] A1.2, add the crushed magnesium hydroxide into xylene, and mechanically stir to obtain a xylene system; the mass percentage of magnesium hydroxide in xylene is 25%.

[0067] A1.3, add a certain amount of maleic anhydride to the xylene system and mechanically stir until it is completely dissolved, and pass nitrogen to remove oxygen; add a certain amount of styrene after complete dissolution, and continue to pass nitrogen, stir while mechanically stirring The rotational speed is 100-500rpm.

[0068] The mass percent content of maleic anhydride in magnesium hydroxide is 15%, and the mass percent content of styrene in magnesium hydroxide is 10%.

[0069] A1.4, add a certain amount of azobisisobutyr...

Embodiment 2～15

[0079] See Table 1 for the raw materials used in the preparation of thermally decomposed material microcapsules and their preparation ratios in Examples 2-15; see Table 2 for the preparation of thermally decomposed materials and their performance tests in Examples 2-15, and the other contents are the same as in Example 1, wherein:

[0080] The pyrolysis material prepared by the ratio of Examples 2-15: the length and width of the sample are 200mm, the thickness is 15mm, and the apparent density is ≤0.66g / cm 3 , Pyrolysis enthalpy: ≥900J / g; room temperature thermal conductivity: ≤0.085W / m.K.

[0081] Table 1

[0082]

[0083] Table 2

[0084]

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Abstract

The invention provides a pyrolysis material and a preparation method thereof, which is made by compounding pyrolysis filler microcapsules, high-temperature-resistant chopped fibers, modified functional materials, and high-temperature-resistant silicone rubber adhesives, which greatly reduces convective transmission. Heat, so that the thermal decomposition material has low thermal conductivity, thermal conductivity at room temperature ≤ 0.085W / m.K; excellent heat absorption performance (pyrolysis enthalpy value ≥ 900J / g) and high temperature resistance (capable of 400 ℃ high temperature).

Description

technical field [0001] The invention relates to a thermal decomposition material and a preparation method thereof, belonging to the technical field of functional composite materials. Background technique [0002] With the development of technology, there are a large number of equipment parts on the ship, which will emit a lot of heat during work, causing the equipment to fail to work normally. Therefore, certain protective measures must be taken for the equipment parts. [0003] At present, equipment parts are generally covered with flexible cotton felt directly. However, this method has limited effect and is limited by the structural size of the equipment parts. Due to the limitation of specifications, the flexible cotton felt cannot meet the requirements of equipment parts. Contents of the invention [0004] A brief overview of the invention is given below in order to provide a basic understanding of some aspects of the invention. It should be understood that this summ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/04C08L61/06C08L25/06C08L61/24C08K9/06C08K9/10C08K3/22C08K7/14C08K7/24C08K7/26C08K7/10C08F222/06C08F212/08C08F212/36C08J7/12C08J7/00B01J13/14
Inventor 赵小玲侯少华邹军锋陈建冯鹏安烜熜金兆国
Owner AEROSPACE INST OF ADVANCED MATERIALS & PROCESSING TECH
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