CN108395618A - A method of improving conducting polymer heat conductivility and mechanical property - Google Patents
A method of improving conducting polymer heat conductivility and mechanical property Download PDFInfo
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- CN108395618A CN108395618A CN201810243936.5A CN201810243936A CN108395618A CN 108395618 A CN108395618 A CN 108395618A CN 201810243936 A CN201810243936 A CN 201810243936A CN 108395618 A CN108395618 A CN 108395618A
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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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/06—Elements
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/08—Materials not undergoing a change of physical state when used
- C09K5/14—Solid materials, e.g. powdery or granular
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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
- C08K2201/00—Specific properties of additives
- C08K2201/001—Conductive additives
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Polymers & Plastics (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention belongs to polymeric material fields, and in particular to a kind of while method that improves conducting polymer heat conductivility and mechanical property.The present invention provides a kind of method improving conducting polymer heat conductivility and mechanical property, and the method is：Low-melting alloy is added in the polymer, obtains polymer/low-melting alloy mixture in 260 DEG C of melt blendings, then make low-melting alloy form microfibre in the polymer by micro injection molding the mixture；Wherein, the ratio of polymer and low-melting alloy is：100 parts by weight of polymer, 1~20 parts by weight of low-melting alloy.Low-melting alloy is added in the present invention in the polymer, is realized by micro injection molding method：Low-melting alloy forms the good fiber in situ of form in the polymer, constitutes network structure, to play humidification, and can be substantially reduced the use content of metal material, reaches higher conductive and heat-conducting effect.
Description
Technical field
The invention belongs to polymeric material fields, and in particular to a kind of to improve conducting polymer heat conductivility and mechanics simultaneously
The method of performance.
Background technology
Conductive and heat-conductive polymer composites are widely used in production and sphere of life, to improve its electrical and thermal conductivity simultaneously
Can, the fillers such as conductive black, heat-conducting metal are usually added thereto, but will certainly reduce its mechanics after adding a large amount of filler
The comprehensive performance of performance and its composite material.
Invention content
In view of the foregoing drawbacks, the present invention provides a kind of method improving conducting polymer heat conductivility and mechanical property, institute
Obtain composite material has good electrical and thermal conductivity performance and mechanical property simultaneously.
Technical scheme of the present invention：
The invention solves first technical problem be to provide a kind of while improving conducting polymer heat conductivility and power
The method for learning performance, the method are：Low-melting alloy is added in the polymer, polymer/eutectic is obtained in 260 DEG C of melt blendings
Point alloy mixture, then make low-melting alloy form microfibre in the polymer by micro injection molding the mixture；Its
In, the ratio of polymer and low-melting alloy is：100 parts by weight of polymer, 1~20 parts by weight of low-melting alloy.
Further, the polymer is polypropylene, polyethylene or polylactic acid.
Further, the low-melting alloy refers to fusing point in 300 DEG C of metals and its alloy below, usually by Bi, Sn,
The low-melting-point metals element such as Pb, In forms.
Further, in the micro injection molding method：Injection speed is 300mm/s, and injection temperature is 250 DEG C~260 DEG C, note
Injection pressure 1200bar, mold temperature are 80 DEG C~110 DEG C.
Beneficial effects of the present invention：
1, low-melting alloy is added in the present invention in the polymer, is realized by micro injection molding method：Low-melting alloy exists
The good fiber in situ of form is formed in polymer, is constituted network structure, to play humidification, and can obviously be dropped
The use content of low metal material reaches higher conductive and heat-conducting effect.
2, the present invention prepares raw material and is easy to get simply, at low cost, and can expand the work of fine-scale composite on a large scale
In-situ low-temperature metal fiber/polymer alloy material has been made in industry application.
3, the present invention provides a kind of processing method of new formation fiber in situ, the mechanical property of polymer is improved,
Impact property heat conductivility and electric conductivity, machinability have good dimensional stability；In addition, this method can be bright
It is aobvious to shorten the process-cycle.
Specific implementation mode：
The specific implementation mode of the present invention is further described with reference to embodiment, is not therefore limited the present invention
System is among the embodiment described range.
Embodiment 1
(1) by polypropylene in 80 DEG C of vacuum drying 12h；
(2) 90 parts by weight of polypropylene being dried and low-melting-point metal Bi10 parts by weight are put into mixer
Melt blending is carried out at 260 DEG C, it is 5 minutes that the time, which is blended,；
(3) and then after drying-granulating micro injection molding processing, injection speed 300mm/s, injection temperature 260 are carried out
DEG C, injection pressure 1200bar, mold temperature is 80 DEG C；The shape of gained batten is dumbbell shape, size 15*3*0.3mm3.It will
Gained batten carries out the test of mechanical property and electrical and thermal conductivity performance, and results of property is as shown in table 1.
The mechanical property and heat conductivility of 1 polypropylene of table and embodiment 1-5 gained heat conduction PP composite materials
Embodiment 2
(1) polypropylene is dried in vacuo to drying 12h at 80 DEG C；
(2) 90 parts of polypropylene being dried is put into mixer with low-melting-point metal Sn10 parts by weight at 260 DEG C
Under be blended, be blended the time be 5 minutes；
(3) and then after drying-granulating micro injection molding processing, injection speed 300mm/s, injection temperature 260 are carried out
DEG C, injection pressure 1200bar, mold temperature is 100 DEG C；The shape of gained batten is dumbbell shape, size 15*3*0.3mm3。
Gained batten is carried out to the test of mechanical property and electrical and thermal conductivity performance, results of property is as shown in table 1.
Embodiment 3
(1) polypropylene is dried in vacuo to drying 12h at 80 DEG C；
(2) 90 parts by weight of polypropylene being dried and low-melting-point metal Pb10 parts by weight are put into mixer
It is blended at 260 DEG C, it is 5 minutes that the time, which is blended,；
(3) and then after drying-granulating micro injection molding processing, injection speed 300mm/s, injection temperature 260 are carried out
DEG C, injection pressure 1200bar, mold temperature is 110 DEG C；The shape of gained batten is dumbbell shape, size 15*3*0.3mm3。
Gained batten is carried out to the test of mechanical property and electrical and thermal conductivity performance, results of property is as shown in table 1.
Embodiment 4
(1) polypropylene is dried in vacuo to drying 12h at 80 DEG C；
(2) 80 parts by weight of polypropylene being dried and low-melting-point metal Pb20 parts by weight are put into mixer
It is blended at 260 DEG C, it is 5 minutes that the time, which is blended,；
(3) and then after drying-granulating micro injection molding processing, injection speed 300mm/s, injection temperature 260 are carried out
DEG C, injection pressure 1200bar, mold temperature is 110 DEG C；The shape of gained batten is dumbbell shape, size 15*3*0.3mm3。
Gained batten is carried out to the test of mechanical property and electrical and thermal conductivity performance, results of property is as shown in table 1.
Embodiment 5
(1) polyethylene is dried in vacuo to drying 12h at 80 DEG C；
(2) 90 parts by weight of polyethylene being dried and low-melting-point metal Bi10 parts by weight are put into mixer
It is blended at 260 DEG C, it is 5 minutes that the time, which is blended,；
(3) and then after drying-granulating micro injection molding processing, injection speed 300mm/s, injection temperature 260 are carried out
DEG C, injection pressure 1200bar, mold temperature is 80 DEG C；The shape of gained batten is dumbbell shape, size 15*3*0.3mm3.It will
Gained batten carries out the test of mechanical property and electrical and thermal conductivity performance, and results of property is as shown in table 1.
Comparative example 1
(1) polypropylene is dried in vacuo to drying 12h at 80 DEG C；
(2) 90 parts by weight of polypropylene being dried and low-melting-point metal Bi10 parts by weight are put into mixer
It is blended at 260 DEG C, it is 5 minutes that the time, which is blended,；
(3) and then after drying-granulating common processing and forming is carried out, injection ram compression power is 450bar, and injection temperature is 260 DEG C,
Mold temperature is 100 DEG C；The shape of gained batten is dumbbell shape, size 150*10*17mm3.Gained batten is subjected to mechanics
The test of performance and electrical and thermal conductivity performance, results of property are as shown in table 1.
Although describing the present invention above in conjunction with embodiment, it would be clear to those skilled in the art that not departing from power
In the case of the spirit and scope that profit requires, above-described embodiment can be carry out various modifications.
Claims (7)
1. a kind of method improving conducting polymer heat conductivility and mechanical property, which is characterized in that the method is：It is polymerizeing
Low-melting alloy is added in object, obtains polymer/low-melting alloy mixture in 260 DEG C of melt blendings, then the mixture is passed through
Micro injection molding makes low-melting alloy form microfibre in the polymer；Wherein, the ratio of polymer and low-melting alloy is：
100 parts by weight of polymer, 1~20 parts by weight of low-melting alloy.
2. a kind of method improving conducting polymer heat conductivility and mechanical property according to claim 1, feature exist
In the polymer is polypropylene, polyethylene or polylactic acid.
3. a kind of method improving conducting polymer heat conductivility and mechanical property according to claim 1 or 2, feature
It is, the low-melting alloy refers to fusing point in 300 DEG C of metals and its alloy below.
4. a kind of method improving conducting polymer heat conductivility and mechanical property according to claim 3, feature exist
In the low-melting alloy is Bi, Sn, Pb or In.
5. a kind of method improving conducting polymer heat conductivility and mechanical property according to claim 1 or 2, feature
It is, in the micro injection molding method：Injection speed is 300mm/s, and injection temperature is 250 DEG C~260 DEG C, injection pressure
1200bar, mold temperature are 80 DEG C~110 DEG C.
6. a kind of method improving conducting polymer heat conductivility and mechanical property according to claim 3, feature exist
In in the micro injection molding method：Injection speed is 300mm/s, and injection temperature is 250 DEG C~260 DEG C, injection pressure
1200bar, mold temperature are 80 DEG C~110 DEG C.
7. a kind of method improving conducting polymer heat conductivility and mechanical property according to claim 4, feature exist
In in the micro injection molding method：Injection speed is 300mm/s, and injection temperature is 250 DEG C~260 DEG C, injection pressure
1200bar, mold temperature are 80 DEG C~110 DEG C.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810243936.5A CN108395618A (en) | 2018-03-23 | 2018-03-23 | A method of improving conducting polymer heat conductivility and mechanical property |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109575572A (en) * | 2018-12-11 | 2019-04-05 | 四川大学 | A method of improving polymer matrix composite dielectric properties |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102115558A (en) * | 2010-12-29 | 2011-07-06 | 四川大学 | High-conductivity polymer carbon nanotube composite material and micro-processing method thereof |
-
2018
- 2018-03-23 CN CN201810243936.5A patent/CN108395618A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102115558A (en) * | 2010-12-29 | 2011-07-06 | 四川大学 | High-conductivity polymer carbon nanotube composite material and micro-processing method thereof |
Non-Patent Citations (3)
| Title |
|---|
| WEIWEI DING ET AL.: "In situ nano-fibrillation of microinjection molded poly(lactic acid)/poly(3-caprolactone) blends and comparison with conventional injection molding", 《RSC ADV.》 * |
| ZHONGGUO ZHAO ET AL: "New understanding of the hierarchical distribution of isotactic polypropylene blends formed by microinjection-molded poly(ethylene terephthalate) and b-nucleating agent", 《RSC ADV.》 * |
| 熊传溪等: "LMPM/PP原位复合材料微纤结构的形成", 《材料导报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109575572A (en) * | 2018-12-11 | 2019-04-05 | 四川大学 | A method of improving polymer matrix composite dielectric properties |
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