CN105647191A - Flexible heat conduction interface material with wave absorbing function and preparation method thereof - Google Patents

Abstract

The invention relates to a flexible heat conduction interface material with a wave absorbing function, which comprises the following components in parts by mass: 100 parts of vinyl silicone oil, 100 to 1,000 parts of a heat conducting filler, 100 to 1,000 parts of a wave absorbing material, 1 to 50 parts of hydrogen-containing silicone oil, 0.01 to 1 part of a platinum catalyst, and 0.01 to 1 part of an inhibitor. The flexible heat conduction interface material has the advantages that a high-thermal-conductivity caulking interface is produced by a mixture prepared by mixing the vinyl silicone oil, the heat conducting filler, the wave absorbing material, the hydrogen-containing silicone oil, the platinum catalyst and the inhibitor; due to addition of the wave absorbing material, the mixture has an excellent electromagnetic parameter, and the electromagnetic parameter of the mixture can be achieved by regulating a particle size of micro particles of the wave absorbing material; and the flexible heat conduction interface material is beneficial to impedance matching and widening of an absorption band and can meet the requirements of the electron and communication industries for high-efficiency energy conduction and electromagnetic compatibility. In addition, the invention further provides a preparation method of the flexible heat conduction interface material with the wave absorbing function.

Description

A kind of flexible heat-conducting interface material with suction wave energy and preparation method thereof

Technical field

The present invention relates to a kind of flexible heat-conducting interface material having and inhaling wave energy and preparation method thereof.

Background technology

Sustainable development along with electronic product, the miniaturization day by day of electronic devices and components, Highgrade integration makes the electromagnetic environment that we live become increasingly complex, produce electromagnetic interference, electromagnetic pollution and information leakage etc. endanger, heat radiation and electromagnetic shielding increasingly become engineers must faced by problem, especially when both need to take into account, this heat conduction absorbing material may be directly applied between chip and heat radiating metal shell, effectively heat energy can be derived, there are electromagnetic shielding and electromagnetism clutter absorbent properties simultaneously, good solution is provided at heat conduction and electromagnetic shielding for telecommunications product, it is generally used for communication apparatus, the network equipment and optical communication modules and other products.

Summary of the invention

The technical problem to be solved in the present invention is to provide a kind of flexible heat-conducting interface material having and inhaling wave energy and preparation method thereof, solves existing heat-conducting interface material and there is conductive performance difference and the problem of effectiveness difference.

In order to solve above-mentioned technical problem, the present invention is achieved by the following technical solutions: a kind of have the flexible heat-conducting interface material inhaling wave energy, component including following mass fraction forms: vinyl silicone oil 100 parts, heat filling 100��1000 parts, absorbing material 100��1000 parts, containing hydrogen silicone oil 1��50 part, platinum catalyst 0.01��1 part, inhibitor 0.01��1 part.

Preferably, the viscosity of vinyl silicone oil is 400��10000mPa S, can guarantee that the high heat conduction of high product and wave absorbtion.

Preferably, heat filling is one or both the mixture in silicon powder, aluminium oxide, aluminium hydroxide, magnesium oxide, hydrophobic silicon micropowder, lyophobic alumina, hydrophobic aluminium hydroxide or two or more mixture.

Preferably, absorbing material is that carborundum, graphite, Barium metatitanate., submicron metal, composite magnetic metallic compound absorbing material, ferrite, pottery absorbing material, doping height damage thing absorbing material, salt absorbing material, emitting isotope absorbing material, conductive polymeric radar absorbing material, nano wave-absorbing material, rare earth element absorbing material, one or both mixture of conductive fiber or two or more mixture.

Preferably, the hydrogen content in containing hydrogen silicone oil is 0.01��0.8%.

Preferably, platinum catalyst is Karst platinum catalyst.

Preferably, it is suppressed that agent is alkynol compound, many vinyl polysiloxane, amide compound, one or both mixture of maleate compounds or two or more mixture.

A kind of preparation method with the flexible heat-conducting interface material inhaling wave energy, comprises the following steps:

Step 1: vinyl silicone oil, containing hydrogen silicone oil, heat filling, absorbing material are added mix homogeneously in planet machine, and mixing temperature is 25 DEG C, and incorporation time is 30min;

Step 2: mixed for step 1 mixture is warming up to 120 DEG C and is heated mixing, heating mixing time is 2h;

Step 3: step 2 adding the material after hot milling in vacuum more than carrying out de-reduction process under 0.095Mpa, and material is cooled to 25 DEG C, the de-low time is 1h;

Step 4; Adding inhibitor, platinum catalyst in material after taking off from low cooling to step 3, then in calendering additive reaction short vulcanization molding, rolling temperature is 140 DEG C.

In sum, advantages of the present invention: by vinyl silicone oil, heat filling, absorbing material, containing hydrogen silicone oil, platinum catalyst, inhibitor mixed mixture produce high thermal gap circle, addition due to absorbing material, make mixture have good electromagnetic parameter, and its electromagnetic parameter can be realized by the particle size of adjustment absorbing material, is conducive to the broadening of impedance matching and absorption band, can meet electronics, high efficiency energy is conducted by communications industry, the demand of Electro Magnetic Compatibility.

By vinyl silicone oil, heat filling, absorbing material, containing hydrogen silicone oil, platinum catalyst, inhibitor pass sequentially through the high flexibility heat-conducting interface material that step one mixes, step 2 adds hot milling, the de-reduction process of step 3, step 4 sulfidization molding are made, can guarantee that the mix homogeneously of raw material, simplify preparation technology, ensure that the high flexibility heat-conducting interface material made has good electromagnetic parameter, and the hardness of the flexible heat-conducting interface material made is low, flexibility is good, and heat conductivity is high.

Detailed description of the invention

Embodiment one:

A kind of have the flexible heat-conducting interface material inhaling wave energy, and the component including following mass fraction forms: vinyl silicone oil 100 parts, heat filling 900 parts, absorbing material 100 parts, containing hydrogen silicone oil 10 parts, platinum catalyst 0.1 part, inhibitor 0.01 part;

The viscosity of vinyl silicone oil is 700mPa S, and heat filling is particle diameter is the lyophobic alumina of 20 ��m, and absorbing material is particle diameter is the ferrite of 40 ��m, and platinum catalyst is Karst platinum catalyst, it is suppressed that agent is alkynol compound.

Embodiment two:

A kind of have the flexible heat-conducting interface material inhaling wave energy, component including following mass fraction forms: viscosity is the vinyl silicone oil 100 parts of 700mPa S, particle diameter to be 20 ��m of lyophobic aluminas 900 parts, particle diameter be 40 ��m ferrite 40 parts, hydrogen content be 0.15% silicone oil 10 parts, Karst platinum catalyst 0.1 part, alkynol compound 0.01 part.

Embodiment three:

A kind of have the flexible heat-conducting interface material inhaling wave energy, component including following mass fraction forms: viscosity is the vinyl silicone oil 100 parts of 700mPa S, particle diameter to be 20 ��m of lyophobic aluminas 800 parts, particle diameter be 40 ��m ferrite 200 parts, hydrogen content be 0.15% silicone oil 10 parts, Karst platinum catalyst 0.1 part, alkynol compound 0.01 part.

Embodiment four:

A kind of have the flexible heat-conducting interface material inhaling wave energy, component including following mass fraction forms: viscosity is the vinyl silicone oil 100 parts of 700mPa S, particle diameter to be 20 ��m of lyophobic aluminas 950 parts, particle diameter be 40 ��m ferrite 50 parts, hydrogen content be 0.15% silicone oil 5 parts, Karst platinum catalyst 0.1 part, alkynol compound 0.01 part.

A kind of preparation method with the flexible heat-conducting interface material inhaling wave energy, comprises the following steps:

Step 1: vinyl silicone oil, containing hydrogen silicone oil, lyophobic alumina, ferrite are added mix homogeneously in planet machine, and mixing temperature is 25 DEG C, and incorporation time is 30min;

Step 2: mixed for step 1 mixture is warming up to 120 DEG C and is heated mixing, heating mixing time is 2h;

Step 3: step 2 adding the material after hot milling in vacuum more than carrying out de-reduction process under 0.095Mpa, and material is cooled to 25 DEG C, the de-low time is 1h;

Step 4; Adding Karst platinum catalyst, alkynol compound in material after taking off from low cooling to step 3, then in calendering additive reaction short vulcanization molding, rolling temperature is 140 DEG C.

By said method, the high flexibility rubber elastomer that the present invention and comparative example one, comparative example two, comparative example three make is carried out heat conductivity, hardness and pcrmeability to test, and test result is as shown in Table 1: method of testing: according to the heat conductivity of ASTMD5470-2012 test pad, the heat-conductive characteristic of the more high pad of heat conductivity is more good; Measure the hardness of pad by ASTM2240-2005, hardness is more low, and pad is more soft, measures the permeability of pad by ASTMA342/A342M 14.

Project	Embodiment one	Embodiment two	Embodiment three	Embodiment four
					Heat conductivity, W/m.k	3.2	3.3	3.0	3.4
Hardness, shore00	11	32	45	25
					Pcrmeability (1MHz) �� ',	45	47	61	31

Table one

Except above preferred embodiment, the present invention also has other embodiment, and those skilled in the art can be variously modified according to the present invention and deform, and without departing from the spirit of the present invention, all should belong to the scope that claims of the present invention are defined.

Claims (8)

1. one kind has the flexible heat-conducting interface material inhaling wave energy, it is characterized in that: include the component composition of following mass fraction: vinyl silicone oil 100 parts, heat filling 100��1000 parts, absorbing material 100��1000 parts, containing hydrogen silicone oil 1��50 part, platinum catalyst 0.01��1 part, inhibitor 0.01��1 part.

2. a kind of flexible heat-conducting interface material with suction wave energy according to claim 1, it is characterised in that: the viscosity of vinyl silicone oil is 400��10000mPa S.

3. a kind of flexible heat-conducting interface material with suction wave energy according to claim 1, it is characterised in that: heat filling is one or both the mixture in silicon powder, aluminium oxide, aluminium hydroxide, magnesium oxide, hydrophobic silicon micropowder, lyophobic alumina, hydrophobic aluminium hydroxide or two or more mixture.

4. according to claim 1 a kind of have the flexible heat-conducting interface material inhaling wave energy, it is characterised in that: absorbing material is that carborundum, graphite, Barium metatitanate., submicron metal, composite magnetic metallic compound absorbing material, ferrite, pottery absorbing material, doping height damage thing absorbing material, salt absorbing material, emitting isotope absorbing material, conductive polymeric radar absorbing material, nano wave-absorbing material, rare earth element absorbing material, one or both mixture of conductive fiber or two or more mixture.

5. a kind of flexible heat-conducting interface material with suction wave energy according to claim 1, it is characterised in that: the hydrogen content in containing hydrogen silicone oil is 0.01��0.8%.

6. a kind of flexible heat-conducting interface material with suction wave energy according to claim 1, it is characterised in that: platinum catalyst is Karst platinum catalyst.

7. according to claim 1 a kind of have the flexible heat-conducting interface material inhaling wave energy, it is characterised in that: inhibitor is alkynol compound, many vinyl polysiloxane, amide compound, one or both mixture of maleate compounds or two or more mixture.

8. the preparation method that a kind of flexible heat-conducting interface material with suction wave energy adopts as claimed in claim 1, it is characterised in that: comprise the following steps:

Step 1: vinyl silicone oil, containing hydrogen silicone oil, heat filling, absorbing material are added mix homogeneously in planet machine, and mixing temperature is 25 DEG C, and incorporation time is 30min;

Step 2: mixed for step 1 mixture is warming up to 120 DEG C and is heated mixing, heating mixing time is 2h;

Step 3: step 2 adding the material after hot milling in vacuum more than carrying out de-reduction process under 0.095Mpa, and material is cooled to 25 DEG C, the de-low time is 1h;

Step 4; Adding inhibitor, platinum catalyst in material after taking off from low cooling to step 3, then in calendering additive reaction short vulcanization molding, rolling temperature is 140 DEG C.