Novel preparation process of polyurethane high-thermal-conductivity insulation sheet
A manufacturing process and thermal insulation technology, which is applied in the manufacturing process of new polyurethane high thermal conductivity insulating sheets, can solve the problems of corroding components and affecting working performance, and achieves the effects of excellent performance, good safety and reliability, and uniform thermal conductivity.
Inactive Publication Date: 2019-07-16
睿惢思工业科技(苏州)有限公司
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The application number 201710343411.4 is disclosed in the prior art, which is called a thermally conductive insulating material and its preparation method. The thermally conductive insulating material includes a thermally conductive silica gel layer and a thermally conductive adhesive layer; The insulating coating contains epoxy-modified silicone resin, silicon carbide, composite flame retardant, titanium dioxide, boron nitride, 1-3% additives and curing agent; the above existing technologies all have good thermal conductivity, thermal silica and its Although modified thermally conductive silica gel has excellent thermal conductivity and mechanical properties, silicone oil will gradually precipitate out of silicone oil after working in a high-temperature environment for a long time, which will corrode the attached components themselves and affect their working performance. Therefore, silicon-free thermal pads are becoming A new industry trend
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[0023] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.
[0024] see figure 1 and figure 2 , the embodiment of the present invention includes:
[0025] A manufacturing process of a novel polyurethane high thermal conductivity insulating sheet, comprising the following steps:
[0026] Step 1: Make polyurethane thermally conductive and insulating composite coating; polyurethane thermally conductive and insulating composite coating is composed of filler, dispersant and resin main body 4; dispersant is 70% alcohol PEG liquid; resin main body 4 is polyurethane rubber resin; filler is thermal conductive ceramics Powder, heat-conducting ceramic powder is made of boron nitride and magnesium oxide, in which t...
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Abstract
The invention discloses a novel preparation process of a polyurethane high-thermal-conductivity insulation sheet. The preparation process comprises the following steps: coating the surface of a film substrate by a high-thermal-conductivity insulation composite material by a continuous coating method, performing drying, and performing calendering to obtain the thermal-conduction insulation sheet with excellent performance. According to the process provided by the invention, thermal conduction in X, Y and Z directions of the finished product are uniform, the thermal conductivity can reach 8W / m*K, the breakdown resistant voltage is 4-6 kv, and the insulation resistance is 10<6>-10<13>omega; the process uses a silicon-free material, so that the finished product does not precipitate silicone oil when used in high-temperature high-humidity environments, does not corrode equipment, and has very good safety and reliability; and the product prepared by the process has good uniformity and compactness.
Description
technical field [0001] The invention relates to the field of manufacturing technology of insulating sheets, in particular to a manufacturing technology of a novel polyurethane insulating sheet with high thermal conductivity. Background technique [0002] With the rapid development of the modern electronics industry, the degree of integration of electronic components and circuits is getting higher and higher, and the heat generated by the equipment is also increasing sharply; if the heat is not exported in time, the continuous accumulation will directly affect the performance and performance of the device itself. service life. Therefore, fast and efficient heat dissipation has become the primary problem to be solved for the sustainable development of the industry; the traditional technology is to install a layer of heat-conducting insulating material on the surface of the heat source as the heat-conducting medium, among which heat-conducting silicone is the most widely used. ...
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IPC IPC(8): C08J7/04C09D175/04C09D7/61C08J5/18C08L75/04C08K3/38C08K3/22C08L67/02C08L79/08
CPCC09D175/04C09D7/61C08J5/18C08K2003/385C08K2003/222C08J2367/02C08J2379/08C08J2475/04C08J2375/04C08J7/0427C08K3/38C08K3/22
Inventor张文杰
Owner睿惢思工业科技(苏州)有限公司