Filling formula of modified polytetrafluoroethylene high-thermal-conductivity composite material and obtaining method of filling formula
A polytetrafluoroethylene and composite material technology, used in climate sustainability, chemical industry, instrumentation, etc. Corrosion and heat transfer efficiency, the best effect of thermal conductivity
Inactive Publication Date: 2015-04-22
ZHENGZHOU UNIV
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[0004] The invention provides a formula for filling modified polytetrafluoroethylene high thermal conductivity composite material and its acquisition method, aiming to solve the problem that the prior art only fills the modified polytetrafluoroethylene high thermal conductivity composite material with two phases of graphite and carbon fiber The key properties have been studied, but there is no systematic optimization to seek the best ratio of the two, and the problem of failing to achieve the best performance of the modified PTFE high thermal conductivity composite material
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[0035] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the invention.
[0036] The purpose of the present invention is to provide a formula filled with modified polytetrafluoroethylene high thermal conductivity composite material.
[0037] In the embodiment of the present invention, the carbon fiber in the formulation needs to be surface-treated before filling.
[0038] In the embodiment of the present invention, the methods for surface treatment of carbon fibers include: plasma method, ion treatment method, coating treatment, oxidation method, coupling agent treatment method, solution reduction treatment and purification method, surface whiskering method, Electropol...
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Abstract
The invention belongs to the technical field of material synthesis and provides a filling formula of a modified polytetrafluoroethylene high-thermal-conductivity composite material and an obtaining method of the filling formula. The filling formula comprises 18+ / -0.5 volume percent of graphite and 10 volume percent of carbon fiber. The thermal conductivity of the graphite and carbon fiber double-phase filled modified polytetrafluoroethylene high-thermal-conductivity composite material is researched by a thermal-conductivity measuring device, the mechanical property of the graphite-filled modified polytetrafluoroethylene high-thermal-conductivity composite material is subjected by simulation research by finite element value, the mechanical property of the carbon fiber-filled modified polytetrafluoroethylene high-thermal-conductivity composite material is obtained through theoretical derivation, and the mechanical property of the modified polytetrafluoroethylene high-thermal-conductivity composite material is researched according to an empirical formula, so that the purposes of optimizing and seeking the optimal proportion of the graphite to the carbon fiber systematically is fulfilled, the modified polytetrafluoroethylene high-thermal-conductivity composite material has the optimal thermal conductivity on the premise of meeting the requirement of structural strength, and the corrosion resistance and the heat exchange efficiency of a corrosion-resistant heat exchanger are effectively improved.
Description
technical field [0001] The invention belongs to the technical field of material synthesis, and in particular relates to a formulation of a filled modified polytetrafluoroethylene high thermal conductivity composite material and a method for obtaining the same. Background technique [0002] In the process of petrochemical and pharmaceutical production, some heat exchange equipment often work in corrosive environment. There are two main types of corrosion-resistant heat exchangers currently in use: the first is plate or shell-and-tube heat exchangers made of alloy materials such as titanium plates, nickel plates, and Mo2Ti; the second is non-ferrous metals such as graphite, PTFE, and PP. Heat exchangers made of metal materials. The cost of alloy materials is high, and under strong corrosiveness, some alloy materials will also corrode, which restricts the application range of alloy material plate or shell and tube heat exchangers; non-metallic heat exchangers have low operatin...
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IPC IPC(8): C08L27/18C08K13/06C08K9/00C08K7/06C08K3/04G06F17/50
CPCY02P20/10
Inventor 靳遵龙李赵刘敏珊陈晓堂王永庆
Owner ZHENGZHOU UNIV