Background technology
Along with the fast development of electron trade, now from common desktop computer, to notebook computer, panel computer, smart mobile phone, scientific and technical innovation is advanced by leaps and bounds.Electronic product carries more and more lighting, and volume is more and more less, and function from strength to strength, causes integrated level more and more higher like this.Cause volume reducing like this, function grow is large, directly causes the cooling requirements of electronic devices and components more and more higher.And the fan type radiating adopted in the past, because volume is large, the problems such as noise can be produced, gradually by market.And then create other heat sink material, as Copper Foil, the heat radiation of aluminium foil class, but due to resource-constrained, and expensive, radiating effect also do not imagine in good, slowly, all finding new efficient heat sink material.Secondly, due to the diversity of electronic product, existing product often needs customization, thus difficulty is suitable for concrete use occasion and limits the popularization of its application; Therefore, a kind ofly for electronic product feature, there is high-performance Heat dissipation adhesive tape if designed, become the direction that those of ordinary skill in the art make great efforts.
Summary of the invention
The object of the invention is to provide a kind of manufacturing process of acrylate sealing tape, the manufacturing process of this acrylate sealing tape substantially increases thermal conductivity in length and thickness direction, and when overcoming long-time heat conduction, greatly reduce the technological deficiency of the viscosity of adhesive linkage, the sticking strength with the contact strength of electron device can be kept for a long time, achieve the stability of heat dispersion, thus improve the work-ing life of adhesive tape further.
For achieving the above object, the technical solution used in the present invention is: a kind of manufacturing process of acrylate sealing tape, comprising a thickness is 0.004mm ~ 0.025mmPET film, this PET film upper surface plating has an aluminium foil layer, PET film lower surface is coated with heat-conducting glue adhesion coating, one interleaving paper is covered on another surface of heat-conducting glue adhesion coating, and described heat-conducting glue adhesion coating is obtained by following technique:
One step, obtains dilution by 0.2 part of linking agent and 150 parts of toluene, 125 parts of ethyl acetate and 150 parts of butanone Homogeneous phase mixing, this linking agent be selected from following general formula (
) compound,
(
);
In formula, R
1, R
2, R
3represent the residue after carbochain that carbonatoms is the ketone of 3 ~ 8 removing a hydrogen atom independently of one another, M represents Fe or Al;
Second step: 150 parts of Graphite Powder 99s are mixed with the first step dilution, and stir formation mixed solution 84 ~ 86 DEG C of conditions;
3rd step: 100 parts of acrylic ester adhesives are mixed with the mixed solution of second step, and through high speed agitator dispersion 2 ~ 10 hours, thus mix the gluing mixed solvent of formation heat conduction;
4th step: 0.8 part of coupling agent adds sizing agent, stirs 0.5-1 hour;
5th step: the gluing mixed solvent of heat conduction that the 3rd step obtains is coated the lower surface that upper surface has the PET film of aluminium foil layer;
6th step: baking is carried out to the gluing mixed solvent of heat conduction in the 4th step and forms heat-conducting glue adhesion coating;
7th step: by separated type material of fitting through another surface of the heat-conducting glue adhesion coating of overbaking in the 5th step;
8th step: rolling;
The Thickness Ratio of described PET film, heat-conducting glue adhesion coating and aluminium foil layer is 10:18:9;
Described Graphite Powder 99 diameter is 4 ~ 4.2 microns.
In technique scheme, further improved plan is as follows:
In such scheme, the whipping temp of described second step is 85 DEG C.
Because technique scheme is used, the present invention compared with prior art has following advantages and effect:
1, the manufacturing process of acrylate sealing tape of the present invention, it substantially increases thermal conductivity in length and thickness direction, and when overcoming long-time heat conduction, greatly reduce the technological deficiency of the viscosity of low adhesive linkage, the sticking strength with the contact strength of electron device can be kept for a long time, achieve the stability of heat dispersion, thus improve the work-ing life of adhesive tape further.
Specific linking agent is added in the formula of 2, the manufacturing process of acrylate sealing tape of the present invention, the technological deficiency of the viscosity of low adhesive linkage is greatly reduced when overcoming long-time heat conduction, the sticking strength with the contact strength of electron device can be kept for a long time, achieve the stability of heat dispersion, thus improve the work-ing life of adhesive tape further
3, the present invention adopts the component of three kinds of certain content as solvent, effectively prevent graphite granule agglomeration in the gluing system of subsequent technique acrylate, thus is conducive to length and thickness direction heat conduction synchronously improves;
4, the present invention is specific according to its formula, adopt diameter to be the graphite of 4 ~ 4.2 microns and Thickness Ratio to be the heat conduction pad pasting of PET film, heat-conducting glue adhesion coating and the aluminium foil layer that 10:18:9 superposes successively, taking into account existing pad pasting performance simultaneously, more be conducive to spread heat and the transmission of electron device, thus further avoid concentrating of adhesive tape amount of localized heat, improve the work-ing life of product.
Embodiment: a kind of manufacturing process of acrylate sealing tape, comprising a thickness is 0.004mm ~ 0.025mmPET film, this PET film upper surface plating has an aluminium foil layer, PET film lower surface is coated with heat-conducting glue adhesion coating, one interleaving paper is covered on another surface of heat-conducting glue adhesion coating, and described heat-conducting glue adhesion coating is obtained by following technique:
The first step, obtains dilution by 0.2 part of linking agent and 150 parts of toluene, 125 parts of ethyl acetate and 150 parts of butanone Homogeneous phase mixing, this linking agent be selected from following general formula (
) compound,
(
);
In formula, R
1, R
2, R
3represent the residue after carbochain that carbonatoms is the ketone of 3 ~ 8 removing a hydrogen atom independently of one another, M represents Fe or Al;
Second step: 150 parts of Graphite Powder 99s are mixed with the first step dilution, and stir formation mixed solution 84 ~ 86 DEG C of conditions;
3rd step: 100 parts of acrylic ester adhesives are mixed with the mixed solution of second step, and through high speed agitator dispersion 2 ~ 10 hours, thus mix the gluing mixed solvent of formation heat conduction;
4th step: 0.8 part of coupling agent adds sizing agent, stirs 0.5-1 hour;
5th step: the gluing mixed solvent of heat conduction that the 3rd step obtains is coated the lower surface that upper surface has the PET film of aluminium foil layer;
6th step: baking is carried out to the gluing mixed solvent of heat conduction in the 4th step and forms heat-conducting glue adhesion coating;
7th step: by separated type material of fitting through another surface of the heat-conducting glue adhesion coating of overbaking in the 5th step;
8th step: rolling;
The Thickness Ratio of described PET film, heat-conducting glue adhesion coating and aluminium foil layer is 10:18:9;
Described Graphite Powder 99 diameter is 4 ~ 4.2 microns.
The whipping temp of above-mentioned second step is 85 DEG C.
Above-described embodiment, only for technical conceive of the present invention and feature are described, its object is to person skilled in the art can be understood content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalences done according to spirit of the present invention change or modify, and all should be encompassed within protection scope of the present invention.