CN108410127A - A kind of preparation method of electronic product casing heat sink material - Google Patents
A kind of preparation method of electronic product casing heat sink material Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L11/00—Compositions of homopolymers or copolymers of chloroprene
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C08L61/22—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds
- C08L61/24—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with acyclic or carbocyclic compounds with urea or thiourea
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- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C08L61/26—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L61/00—Compositions of condensation polymers of aldehydes or ketones; Compositions of derivatives of such polymers
- C08L61/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
- C08L61/26—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds
- C08L61/28—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds with melamine
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Compositions Of Macromolecular Compounds (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Abstract
The present invention provides a kind of preparation method of electronic product casing heat sink material, includes the following steps:A, by amino resins, neoprene, epoxy resin and ethyl acrylate mixing mixing, modified polybutadiene and modified polyvinyl chloride are added, mixing obtains material one;B, by modified calcium carbonate, modified coal ash and carbon fiber co-grinding, then it is watered stirring, obtains slurry;C, fire retardant, ultra-violet absorber and paraffin are added into slurry, heats and stirs, obtain material two;D, material one is mixed with material two, adds accelerating agent, thickener and curing agent, import melting extrusion in dual-screw-stem machine, then import in mold and dehydrate, compression moulding.While the present invention has good heat conductive ability, also there is preferable insulating capacity.
Description
Technical field
The invention belongs to heat sink material technical fields, and in particular to a kind of preparation side of electronic product casing heat sink material
Method.
Background technology
With the development of the universal and electronic product of electronic product, the developing direction of electronic product in micromation and
Integrated direction is developed, and with the micromation of modern electronic product and integrated, heat dissipation problem is also just at main
Problem.Radiate in heat conduction application, even very bright and clean two planes in surface can all have gap to go out when contacting with each other
Existing, the air in these gaps is the non-conductor of heat, can hinder conduction of the heat to cooling fin.And in electronic product casing
Using, this phenomenon with regard to more obvious, the mesh of heat-conducting medium is played between therefore, it is necessary to develop a kind of material filling
's.
Existing Heat Conduction Material is in the field of business to be roughly divided into four kinds:Natural graphite, electrographite, graphite are dilute and carbon nanotube dissipates
Hot material.The scattered price of natural graphite is very cheap, but heat dissipation effect is undesirable.The dilute good heat dissipation effect of graphite, but it is too expensive,
But if the material attachments such as graphite is directly used to carry out heat conduction, heat dissipation between electronic product, powdered graphite can fall to electricity
Inside sub- product, cause electronic product short-circuit, and there is manufacturing process complexity, application surfaces for heat conduction ester in general sense
The readily volatilized formation greasy dirt of narrow problem, especially raw material and dry.
In conclusion needing a kind of better sheathing material to improve the deficiencies in the prior art.
Invention content
The object of the present invention is to provide a kind of preparation method of electronic product casing heat sink material, preparation works of the invention
Skill is simple, of low cost, and the limit of tolerable temperature is wider, and applicable surface is big, while having good heat conductive ability, also has
Preferable insulating capacity.
The present invention provides the following technical solutions:
A kind of preparation method of electronic product casing heat sink material, includes the following steps:
A, amino resins, neoprene, epoxy resin and ethyl acrylate are mixed and is added in mixer, at 160-180 DEG C
Mixing 20-30min, then 220-250 DEG C is raised the temperature to, modified polybutadiene and modified polyvinyl chloride is added, is kneaded 1-2h,
Obtain material one;
B, modified calcium carbonate, modified coal ash and carbon fiber are mixed to join in pulverizer, were crushed to 500-600 mesh sieve,
It is blended into deionized water again, stirs evenly, obtains slurry;
C, fire retardant, ultra-violet absorber and paraffin are added into slurry, 30-40min is heated and stirred at 80-90 DEG C, is obtained
To material two;
D, material one is mixed with material two, adds accelerating agent, thickener and curing agent, imported to melt in dual-screw-stem machine and squeeze
Go out, then import in mold, is dehydrated at 60-80 DEG C, re-compacted molding, you can obtain finished product.
Preferably, the amino resins of the step a is Lauxite, melamine resin and benzoguanamine tree
The mixing of fat.
Preferably, the preparation method of the modified polybutadiene of the step a is:Polybutadiene, silica, silane is even
Connection agent and makrolon are mixed to join in open mill, react 2-4h at 150-180 DEG C, you can obtain modified polybutadiene.
Preferably, the silane coupling agent is methylvinyldichlorosilane coupling agent, phenyl trichlorosilane coupling agent, ammonia
Any one of base propyl trimethoxy silicane coupling agent and mercaptopropyl trimethoxysilane coupling agent or several mixing.
Preferably, the preparation method of the modified polyvinyl chloride of the step a is:By polyvinyl chloride, titanate coupling agent and
Polystyrene is mixed to join in open mill, reacts 1-2h at 130-150 DEG C, then with extruder extruding pelletization, you can is obtained
Modified polyvinyl chloride.
Preferably, the titanate coupling agent is two oil of (the dioctyl phosphoric acid acyloxy) titanate esters of isopropyl three and isopropyl
Sour acyloxy(Dioctyl phosphoric acid acyloxy)The mixing of titanate esters.
Preferably, the preparation method of the modified calcium carbonate of the step b is:Calcium carbonate, stearic acid and ethyl alcohol are mixed and added
Enter into reaction kettle, at 80-110 DEG C, heats and stir 2-3h, you can obtain modified calcium carbonate.
Preferably, the preparation method of the modified coal ash of the step b is:Flyash hydrochloric acid solution is impregnated into 2-3h,
Be washed with deionized 2-3 times, then 2-3h impregnated with sodium hydroxide solution, then be washed with deionized to neutrality, then with Malaysia
Dioctyl phthalate, nanoclay, aluminium oxide and deionized water mixing, high-speed stirred 30-40min obtain dispersion liquid, dispersion liquid are dried
It does, be ground into superfines, you can obtain modified coal ash.
The beneficial effects of the invention are as follows:
The preparation process of the present invention is simple, of low cost, and the limit of tolerable temperature is wider, and applicable surface is big, has and well leads
While thermal energy power, also there is preferable insulating capacity.
The present invention, for main raw material, is further led to amino resins, neoprene, epoxy resin and ethyl acrylate
The ester shape object for crossing heating decompression and grinding and concentration thickening power formation, for filling the sky between pyrogen and cooling fin
Gap can timely conduct the heat between gap, have good cooling system so that the temperature of pyrogen is tieed up
It holds in stable range, prevents from damaging caused by heat dissipation is bad.
The internal substance such as dimethicone that easy to produce oil stain can be coated on interior by the paraffin added in the present invention
Portion avoids generating greasy dirt, but also can prevent the volatile ingredient in heat sink material from volatilizing.
Specific implementation mode
Embodiment 1
A kind of preparation method of electronic product casing heat sink material, includes the following steps:
A, amino resins, neoprene, epoxy resin and ethyl acrylate are mixed and is added in mixer, the mixing at 160 DEG C
30min, then 250 DEG C are raised the temperature to, modified polybutadiene and modified polyvinyl chloride is added, is kneaded 1h, obtains material one;
B, modified calcium carbonate, modified coal ash and carbon fiber are mixed to join in pulverizer, were crushed to 500 mesh sieve, then convert
Enter deionized water, stir evenly, obtains slurry;
C, fire retardant, ultra-violet absorber and paraffin are added into slurry, 30min is heated and stirred at 90 DEG C, obtains material
Two;
D, material one is mixed with material two, adds accelerating agent, thickener and curing agent, imported to melt in dual-screw-stem machine and squeeze
Go out, then import in mold, is dehydrated at 80 DEG C, re-compacted molding, you can obtain finished product.
The amino resins of step a is the mixing of Lauxite, melamine resin and benzoguanamine resin.
The preparation method of the modified polybutadiene of step a is:By polybutadiene, silica, silane coupling agent and poly- carbon
Acid esters is mixed to join in open mill, reacts 4h at 150 DEG C, you can obtain modified polybutadiene.
Silane coupling agent is methylvinyldichlorosilane coupling agent, phenyl trichlorosilane coupling agent, aminopropyl front three
The mixing of oxysilane coupling agent and mercaptopropyl trimethoxysilane coupling agent.
The preparation method of the modified polyvinyl chloride of step a is:Polyvinyl chloride, titanate coupling agent and polystyrene are mixed
It is added in open mill, reacts 2h at 130 DEG C, then with extruder extruding pelletization, you can obtain modified polyvinyl chloride.
Titanate coupling agent is (the dioctyl phosphoric acid acyloxy) titanate esters of isopropyl three and two oleic acid acyloxy of isopropyl(Two
Octylphosphonic acid acyloxy)The mixing of titanate esters.
The preparation method of the modified calcium carbonate of step b is:Calcium carbonate, stearic acid and ethyl alcohol are mixed to join reaction kettle
In, at 80 DEG C, heats and stir 3h, you can obtain modified calcium carbonate.
The preparation method of the modified coal ash of step b is:Flyash hydrochloric acid solution is impregnated into 2h, is washed with deionized
, then be washed with deionized to neutrality 3 time, then 2h is impregnated with sodium hydroxide solution, then with di-2-ethylhexyl maleate, nanoclay,
Aluminium oxide and deionized water mixing, high-speed stirred 40min obtain dispersion liquid, by dispersion liquid drying, are ground into superfines, i.e.,
Modified coal ash can be obtained.
Embodiment 2
A kind of preparation method of electronic product casing heat sink material, includes the following steps:
A, amino resins, neoprene, epoxy resin and ethyl acrylate are mixed and is added in mixer, the mixing at 160 DEG C
20min, then 220 DEG C are raised the temperature to, modified polybutadiene and modified polyvinyl chloride is added, is kneaded 1h, obtains material one;
B, modified calcium carbonate, modified coal ash and carbon fiber are mixed to join in pulverizer, were crushed to 500 mesh sieve, then convert
Enter deionized water, stir evenly, obtains slurry;
C, fire retardant, ultra-violet absorber and paraffin are added into slurry, 30min is heated and stirred at 80 DEG C, obtains material
Two;
D, material one is mixed with material two, adds accelerating agent, thickener and curing agent, imported to melt in dual-screw-stem machine and squeeze
Go out, then import in mold, is dehydrated at 60 DEG C, re-compacted molding, you can obtain finished product.
The amino resins of step a is the mixing of Lauxite, melamine resin and benzoguanamine resin.
The preparation method of the modified polybutadiene of step a is:By polybutadiene, silica, silane coupling agent and poly- carbon
Acid esters is mixed to join in open mill, reacts 2h at 150 DEG C, you can obtain modified polybutadiene.
Silane coupling agent is methylvinyldichlorosilane coupling agent, phenyl trichlorosilane coupling agent, aminopropyl front three
The mixing of oxysilane coupling agent and mercaptopropyl trimethoxysilane coupling agent.
The preparation method of the modified polyvinyl chloride of step a is:Polyvinyl chloride, titanate coupling agent and polystyrene are mixed
It is added in open mill, reacts 1h at 130 DEG C, then with extruder extruding pelletization, you can obtain modified polyvinyl chloride.
Titanate coupling agent is (the dioctyl phosphoric acid acyloxy) titanate esters of isopropyl three and two oleic acid acyloxy of isopropyl(Two
Octylphosphonic acid acyloxy)The mixing of titanate esters.
The preparation method of the modified calcium carbonate of step b is:Calcium carbonate, stearic acid and ethyl alcohol are mixed to join reaction kettle
In, at 80 DEG C, heats and stir 2h, you can obtain modified calcium carbonate.
The preparation method of the modified coal ash of step b is:Flyash hydrochloric acid solution is impregnated into 2h, is washed with deionized
, then be washed with deionized to neutrality 2 time, then 2h is impregnated with sodium hydroxide solution, then with di-2-ethylhexyl maleate, nanoclay,
Aluminium oxide and deionized water mixing, high-speed stirred 30min obtain dispersion liquid, by dispersion liquid drying, are ground into superfines, i.e.,
Modified coal ash can be obtained.
Embodiment 3
A kind of preparation method of electronic product casing heat sink material, includes the following steps:
A, amino resins, neoprene, epoxy resin and ethyl acrylate are mixed and is added in mixer, the mixing at 180 DEG C
30min, then 250 DEG C are raised the temperature to, modified polybutadiene and modified polyvinyl chloride is added, is kneaded 2h, obtains material one;
B, modified calcium carbonate, modified coal ash and carbon fiber are mixed to join in pulverizer, were crushed to 600 mesh sieve, then convert
Enter deionized water, stir evenly, obtains slurry;
C, fire retardant, ultra-violet absorber and paraffin are added into slurry, 40min is heated and stirred at 90 DEG C, obtains material
Two;
D, material one is mixed with material two, adds accelerating agent, thickener and curing agent, imported to melt in dual-screw-stem machine and squeeze
Go out, then import in mold, is dehydrated at 80 DEG C, re-compacted molding, you can obtain finished product.
The amino resins of step a is the mixing of Lauxite, melamine resin and benzoguanamine resin.
The preparation method of the modified polybutadiene of step a is:By polybutadiene, silica, silane coupling agent and poly- carbon
Acid esters is mixed to join in open mill, reacts 4h at 150 DEG C, you can obtain modified polybutadiene.
Silane coupling agent is methylvinyldichlorosilane coupling agent, phenyl trichlorosilane coupling agent, aminopropyl front three
The mixing of oxysilane coupling agent and mercaptopropyl trimethoxysilane coupling agent.
The preparation method of the modified polyvinyl chloride of step a is:Polyvinyl chloride, titanate coupling agent and polystyrene are mixed
It is added in open mill, reacts 2h at 150 DEG C, then with extruder extruding pelletization, you can obtain modified polyvinyl chloride.
Titanate coupling agent is (the dioctyl phosphoric acid acyloxy) titanate esters of isopropyl three and two oleic acid acyloxy of isopropyl(Two
Octylphosphonic acid acyloxy)The mixing of titanate esters.
The preparation method of the modified calcium carbonate of step b is:Calcium carbonate, stearic acid and ethyl alcohol are mixed to join reaction kettle
In, at 110 DEG C, heats and stir 2h, you can obtain modified calcium carbonate.
The preparation method of the modified coal ash of step b is:Flyash hydrochloric acid solution is impregnated into 3h, is washed with deionized
, then be washed with deionized to neutrality 2 time, then 3h is impregnated with sodium hydroxide solution, then with di-2-ethylhexyl maleate, nanoclay,
Aluminium oxide and deionized water mixing, high-speed stirred 40min obtain dispersion liquid, by dispersion liquid drying, are ground into superfines, i.e.,
Modified coal ash can be obtained.
Finished product prepared by above example is detected, following experimental data is obtained:
Table one:
Project | Embodiment 1 | Embodiment 2 | Embodiment 3 |
Tensile strength(MPa) | 184 | 178 | 179 |
Elongation at break(%) | 16 | 17 | 17 |
Heat distortion temperature(℃) | 245 | 226 | 228 |
Thermal coefficient(W/m·k) | 2.4 | 2.5 | 2.5 |
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, although with reference to the foregoing embodiments
Invention is explained in detail, for those skilled in the art, still can be to foregoing embodiments institute
The technical solution of record is modified or equivalent replacement of some of the technical features.It is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of preparation method of electronic product casing heat sink material, which is characterized in that include the following steps:
A, amino resins, neoprene, epoxy resin and ethyl acrylate are mixed and is added in mixer, at 160-180 DEG C
Mixing 20-30min, then 220-250 DEG C is raised the temperature to, modified polybutadiene and modified polyvinyl chloride is added, is kneaded 1-2h,
Obtain material one;
B, modified calcium carbonate, modified coal ash and carbon fiber are mixed to join in pulverizer, were crushed to 500-600 mesh sieve,
It is blended into deionized water again, stirs evenly, obtains slurry;
C, fire retardant, ultra-violet absorber and paraffin are added into slurry, 30-40min is heated and stirred at 80-90 DEG C, is obtained
To material two;
D, material one is mixed with material two, adds accelerating agent, thickener and curing agent, imported to melt in dual-screw-stem machine and squeeze
Go out, then import in mold, is dehydrated at 60-80 DEG C, re-compacted molding, you can obtain finished product.
2. a kind of preparation method of electronic product casing heat sink material according to claim 1, which is characterized in that described
The amino resins of step a is the mixing of Lauxite, melamine resin and benzoguanamine resin.
3. a kind of preparation method of electronic product casing heat sink material according to claim 1, which is characterized in that described
The preparation method of the modified polybutadiene of step a is:Polybutadiene, silica, silane coupling agent and makrolon are mixed
It is added in open mill, reacts 2-4h at 150-180 DEG C, you can obtain modified polybutadiene.
4. a kind of preparation method of electronic product casing heat sink material according to claim 3, which is characterized in that described
Silane coupling agent is methylvinyldichlorosilane coupling agent, phenyl trichlorosilane coupling agent, TSL 8330
Any one of coupling agent and mercaptopropyl trimethoxysilane coupling agent or several mixing.
5. a kind of preparation method of electronic product casing heat sink material according to claim 1, which is characterized in that described
The preparation method of the modified polyvinyl chloride of step a is:Polyvinyl chloride, titanate coupling agent and polystyrene are mixed to join out
In mill, 1-2h is reacted at 130-150 DEG C, then with extruder extruding pelletization, you can obtain modified polyvinyl chloride.
6. a kind of preparation method of electronic product casing heat sink material according to claim 5, which is characterized in that described
Titanate coupling agent is (the dioctyl phosphoric acid acyloxy) titanate esters of isopropyl three and two oleic acid acyloxy of isopropyl(Dioctyl phosphoric acid
Acyloxy)The mixing of titanate esters.
7. a kind of preparation method of electronic product casing heat sink material according to claim 1, which is characterized in that described
The preparation method of the modified calcium carbonate of step b is:Calcium carbonate, stearic acid and ethyl alcohol are mixed to join in reaction kettle, in 80-
At 110 DEG C, heats and stir 2-3h, you can obtain modified calcium carbonate.
8. a kind of preparation method of electronic product casing heat sink material according to claim 1, which is characterized in that described
The preparation method of the modified coal ash of step b is:Flyash hydrochloric acid solution is impregnated into 2-3h, is washed with deionized 2-3 times,
Impregnate 2-3h with sodium hydroxide solution again, then be washed with deionized to neutrality, then with di-2-ethylhexyl maleate, nanoclay, oxygen
Change aluminium and deionized water mixing, high-speed stirred 30-40min obtains dispersion liquid, by dispersion liquid drying, is ground into superfines, i.e.,
Modified coal ash can be obtained.
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109880371A (en) * | 2019-03-14 | 2019-06-14 | 深圳市亮一方光电有限公司 | Great power LED heat conductive silicon grease material based on flyash and preparation method thereof |
CN110330740A (en) * | 2019-07-04 | 2019-10-15 | 安徽英泰利科技有限公司 | A kind of revolution counter potent insulating blanket material and preparation method thereof |
-
2018
- 2018-04-16 CN CN201810336056.2A patent/CN108410127A/en not_active Withdrawn
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109880371A (en) * | 2019-03-14 | 2019-06-14 | 深圳市亮一方光电有限公司 | Great power LED heat conductive silicon grease material based on flyash and preparation method thereof |
CN110330740A (en) * | 2019-07-04 | 2019-10-15 | 安徽英泰利科技有限公司 | A kind of revolution counter potent insulating blanket material and preparation method thereof |
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