Addition single-liquid heat-curable thermally conductive silicone grease composition and method for producing cured product thereof
A silicone grease composition, heating and curing technology, applied in the direction of chemical instruments and methods, heat exchange materials, coatings, etc., can solve the problems of no added amount, records, and inability to ensure heat dissipation paths, etc., to achieve good coating properties, Good storage effect
Active Publication Date: 2021-08-24
SHIN ETSU CHEM CO LTD
View PDF17 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, there are still problems in this addition one-component thermally conductive silicone composition
It has the following problems: if the addition single-liquid thermally conductive silicone composition is made further low in viscosity, fluidity occurs, and it spreads on the electronic component immediately after being discharged. If the gap between the electronic component and the cooling substrate is thick, then the heat dissipation path cannot be ensured
[0010] As other curing means mentioned above, an organopolysiloxane gel composition using a platinum complex curing catalyst that is photoactive by ultraviolet rays has been proposed (Patent No. 3865638: Patent Document 10), although it is described Inorganic filler is added as an optional component, but there is no description on the amount to be added, and there is no description on thermal conductivity, and there are difficulties in storage stability as a single liquid
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1～7、 comparative example 1～3
[0179] The said (A)-(F) component was mixed as follows in the compounding quantity shown in Table 1, and the composition of Examples 1-7 and Comparative Examples 1-3 was obtained. That is, (A), (D), and (E ) ingredients, degassed at 150°C and heated and mixed for 2 hours. Then, it cooled until normal temperature (25 degreeC), (B) and (F) component were added, and it mixed so that it might become uniform at room temperature (25 degreeC). Furthermore, (C)component was added, and it degassed and mixed so that it may become uniform at room temperature. About the composition obtained in this way, the initial viscosity, the hardness after hardening, thermal conductivity, shape maintenance, and storage property were evaluated by the method shown below. The results are shown in Table 1 together. Since the comparative example 1 thickened and gelled immediately after adding (C)component, each characteristic could not be evaluated.
[0180] [Evaluation of initial viscosity]
[0181]...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| viscosity | aaaaa | aaaaa |
| viscosity | aaaaa | aaaaa |
| thermal conductivity | aaaaa | aaaaa |
Login to View More
Abstract
The present invention provides a method for producing an addition one-component heat-curable thermally conductive silicone grease composition and a cured product thereof, which has high shape retention properties even though the initial stage has a low viscosity , soft after heating and curing, good adhesion to the substrate, and can be stored at room temperature. Addition single-component heat-curable thermally conductive silicone grease composition that can be stored at room temperature, which contains the following components as essential components: (A) alkenyl group-containing organopolysiloxane having a viscosity of 50 to 100,000 mPa·s at 25°C , (B) The viscosity at 25° C. is 100 mPa·s or less, has 2 to 10 Si-H groups, has alkoxy groups and / or epoxy groups, and has a degree of polymerization of 15 or less, and the polysiloxane skeleton contains a ring Structured liquid organohydrogen polysiloxane, (C) a specific photoactive platinum complex curing catalyst, (D) a thermally conductive filler with a thermal conductivity of 10W / m·℃ or more; using a Macon viscometer When measured at 10rpm, the viscosity at 25°C is 30-800Pa·s.
Description
technical field [0001] The present invention relates to an addition single-component heat-curable thermally conductive silicone grease composition that can be stored at room temperature and a method for producing its cured product. The composition is low in viscosity, so it has good dischargeability and applicability, and can be used in accordance with electronic components that generate heat. The shape and unevenness can be freely followed, and the shape retention is also high. Therefore, once the shape is determined, it can also maintain its shape. conformability and repairability, it becomes difficult to hang even if it is placed vertically, and it can be completed without applying unnecessary stress to the heat source. Background technique [0002] In the engine control, power train, air conditioning control and other systems in transport aircraft, the content of control is more complicated, and the systems required for control are increasing. Along with this, the numbe...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): C08L83/07C08K3/013C08K5/549C08L83/06C09K5/14
CPCC09K5/14C08K3/00C08K5/549C08L83/06C09D183/04C08K5/5415C08K5/5419C08K5/5435C08L83/04C08G77/12C08G77/20C08K5/56C08L83/00C08G77/08C08G77/14C09K5/08C08K3/36C08L2205/02
Inventor 岩田充弘
Owner SHIN ETSU CHEM CO LTD