CN103408908A - High-performance glass-fiber-reinforced PC (polycarbonate) heat-transfer heat-conduction composite material, and preparation method and application thereof - Google Patents
High-performance glass-fiber-reinforced PC (polycarbonate) heat-transfer heat-conduction composite material, and preparation method and application thereof Download PDFInfo
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Abstract
The invention discloses a glass-fiber-reinforced PC (polycarbonate) heat-transfer heat-conduction composite material which is prepared from the following raw materials in parts by weight: PC, glass fiber, heat-transfer heat-conduction assistant 1, heat-transfer heat-conduction assistant 2, coupling agent, antioxidant and PC graft. The high-performance glass-fiber-reinforced PC heat-transfer heat-dissipation composite material has the advantages of favorable heat dissipation effect, high impact resistance and high wear resistance, and is especially suitable for manufacturing LED (light-emitting diode) lamp housings, large-size lighting equipment housings, motor shells, engine housings, electric appliance housings and aerospace illuminating lamp fixtures.
Description
Technical field
The present invention relates to technical field of polymer materials, relate in particular to the glass fiber reinforced PC composite material field, be specifically related to a kind of high-performance glass fiber reinforced PC heat transfer heat-conductive composite material and its preparation method and application.
Background technology
Polycarbonate (PC) is the engineering plastics that a kind of over-all properties is superior, it is also the fastest general engineering plastic of growth in recent years, has excellent impelling strength, dimensional stability, electric insulating quality, creep resistant, weathering resistance, the advantages such as the transparency and nontoxicity, be widely used at present automobile, electric, building, office equipment, packing, sports equipment, the fields such as health care, along with deepening continuously of study on the modification, be extended to just rapidly aerospace, computer, the high-tech areas such as CD, but also there are some shortcomings in it, as poor as heat dispersion, intensity is low, be easy to stress cracking, more responsive and wear resistance is good enough etc. to breach.
The characteristic such as glass fibre (GF) has that tensile strength is high, coefficient of elasticity is high, apparatus with shock absorbing is large, chemical resistant properties is good, water-absorbent is little, good heat resistance, processibility are good, cheap, belong to typical superior prod, mainly as electrically insulating material, industrial filter material, anticorrosion, moistureproof, heat insulation, sound insulation, cushioning material.Also can be used as the strongthener of multiple mechanicals.
Glass fibre strengthens the PC matrix material as a kind of superior prod with cutting edge technology characteristics, it has that intensity is high, chemical resistant properties and the good remarkable advantage such as excellent of heat dispersion, development research for this product has important marketable value, and the development that promotes national economy is played an important role.Existing existing with the raw material of glass fiber reinforced PC composite material substituted metal material as the shell of set lights, engine, motor in the industry, but existing glass fiber reinforced PC composite material conduction heat transfer poor performance, can not meet the conduction heat transfer requirement of luminaire housings, motor housing, engine case, easily because of security incidents such as excess Temperature damage equipment or initiation fires.
Summary of the invention
In view of this, one of purpose of the present invention be to provide a kind of have the good heat transfer heat conductivility and the high-performance glass fiber reinforced PC composite material.
But another object of the present invention is to provide a kind of large-scale promotion, improves the preparation method of above-mentioned glass fiber reinforced PC composite material performance.
Another object of the present invention is to provide a kind of application of above-mentioned glass fiber reinforced PC composite material.
First purpose of the present invention realizes in the following manner:
A kind of high-performance glass fiber reinforced PC heat transfer heat-conductive composite material, its composition of raw materials is comprised of each component of following weight part:
PC 61-87 part;
Glass 5-15 part;
Heat transfer heat conduction auxiliary agent 1 5-15 part;
Heat transfer heat conduction auxiliary agent 2 1-5 parts;
Coupling agent 0.5-1 part;
Antioxidant 1010 0.5-1 part;
PC grafting 1-2 part;
Described heat transfer heat conduction auxiliary agent 1 is graphite, and heat transfer heat conduction auxiliary agent 2 is aluminum oxide, and coupling agent is silane coupling agent.
In above-mentioned raw materials, PC should select any commercially available PC, and glass can be selected any glass fibre raw material.
In above-mentioned raw materials, graphite is commercially available graphite granule, and its particle diameter is 500-1000nm.Graphite is a kind of outstanding Heat Conduction hot material, can promote the conduction velocity of heat energy at material internal.
Above-mentioned aluminum oxide can be selected commercially available alumina product, and its effect is to improve glass fiber reinforced PC composite material Heat Conduction thermo-efficiency of the present invention.Because aluminum oxide has higher rigidity, be often used as the heat radiation auxiliary agent add to the pottery etc. in the less demanding material of mechanical property.
Above-mentioned silane coupling agent is by trichlorosilane (HSiCl3) with unsaturated olefin addition under the catalysis of platinum chloric acid of reactive group, then obtains through alcoholysis.Its effect be promote in the present invention the organic composition bondings such as the inorganic assistant agents such as graphite, aluminum oxide and PC, mix, can adopt any commercially available prod realization.
Above-mentioned antioxidant 1010 is commercially available prod, can effectively delay the ager process of product, extends product life.
Above-mentioned PC grafting is commercially available prod, can effectively promote the toughness of glass fiber reinforced PC composite material of the present invention, to make up the product mechanical property decline caused because adding the auxiliary agents such as glass, graphite, aluminum oxide.
The contriver finds under study for action, and the heat dispersion of material mainly is subjected to the heat transfer efficiency between its internal structure and controls with heat transfer efficiency.Use graphite-filledly in glass fiber reinforced PC composite material of the present invention, can effectively promote the heat transfer efficiency between material internal, fill aluminum oxide and can significantly promote the heat transfer efficiency of glass fiber reinforced PC composite material.The contriver also screens the consumption of the two simultaneously, obtains optimum consumption, and the two synergistic makes glass fiber reinforced PC composite material of the present invention obtain excellent radiating effect.Simultaneously, between graphite and aluminum oxide and glass and PC, have good mixing performance, under the effect of described silane coupling agent, can form stable, uniform product.
The preparation method of above-mentioned a kind of glass enhance heat transfer heat conduction PC matrix material, it specifically comprises the steps: according to ratio claimed in claim 1, PC, glass, graphite, aluminum oxide, silane coupling agent, antioxidant 1010, PC grafting to be packed in stirrer after repeatedly being uniformly mixed and sent in twin screw extruder,
240-290 ℃Temperature under melting mixing, the gained melt is extruded by tank cooling by the duplex forcing machine, introduce dicing machine and carry out the pelletizing operation, the gained pellet is described high-performance glass fiber reinforced PC heat transfer heat-conductive composite material.
Described stirring repeatedly refers to stirs three times repeatedly, and each churning time is 30-50 minute.The rotating speed of described stirrer is 650-1300 rev/min.
Thereby the rotating speed that rationally uses stirrer can make each feed composition mix and more fully obtain homogeneous product.But for some raw material, excessively slow stirring velocity is difficult to make it fully to mix, and too high mixing speed easily causes the cracking of some composition self structure.The rotating speed of above-mentioned stirrer is the physical property of contriver's various feed composition according to the present invention and preferred, in this scope, can guarantee that each component of raw material can mix, and can effectively prevent raw material generation cracking again and loses efficacy.Described stirring repeatedly refers to the mixing direction that alternately changes stirrer, so just can further promote the mixing of each feed composition in the situation that do not increase rotating speed.Smelting temperature of the present invention is selected according to the character of all kinds of raw materials, and in this temperature range, all kinds of raw materials are all fusible thoroughly is able to abundant mixing, and Yin Wendu is too low and melting mixing is not thorough, and is difficult for because of excess Temperature cracking, rotten.Raw material only obtains abundant mixing combination, could act synergistically and obtain the high-quality performance that the present invention pursues.
The rotating speed of described duplex forcing machine is 250-600 rev/min.
Described melt is extruded when cooling by tank by the duplex forcing machine, and tank temperature used is 60-75 ℃.
Due to the different in kind of product, also each is inconsistent for its coolant water temperature.In general, the space that the water temperature in the rising tank can be reduced between pellet makes it not easily broken, but too high water temperature will cause the pellet bonding, affect product quality and outward appearance.Therefore in the present invention, the designer designs above-mentioned tank water temperature range according to the rotating speed of duplex forcing machine, the character of melt, and moderate, the difficult bonding in the product pellet of the present invention gap of producing in this temperature range, have good processing characteristics.
The rotating speed of described dicing machine is 600-800 rev/min.
Designer of the present invention finds in research practice; the too high meeting of dicing machine rotating speed makes the too small easily fracture in follow-up tie rod operation of pellet volume; it can be the pellet hypertrophy that the dicing machine rotating speed is crossed when slow, affects final pellet and also can strengthen the difficulty of processing in the pellet application time attractive in appearance.And the pellet of each composition all has its suitable pellet size, for the present invention, the rotating speed of the dicing machine of 600-800 rev/min can farthest promote outward appearance and the processing characteristics of product of the present invention.
Every test to product shows, a kind of high-performance glass fiber reinforced PC heat transfer heat-conductive composite material of the present invention has good Heat Conduction thermal effect and high-impact, wear-resisting performance, is particularly useful for producing the application in manufacturing of LED lamp housing, large-scale cover for luminaire, motor housing, engine outer cover, electric appliance casing, aerospace lighting decoration controlled.
Compared with prior art, the present invention has following beneficial effect:
The present invention has added graphite and aluminum oxide to glass fiber reinforced PC composite material especially, and the two can significantly promote heat transfer efficiency and the heat transfer efficiency of glass fiber reinforced PC composite material, with the glass synergistic, can make glass fiber reinforced PC composite material obtain good heat dispersion; The present invention has simultaneously also introduced silane coupling agent as tackiness agent, and its consumption is optimized, not only can make graphite, glass, aluminum oxide and PC its excellent heat dispersion of bonding performance securely, also have the effect that strengthens the product resistance to impact shock, overturn the technology prejudice in industry.
Embodiment
For the ease of it will be appreciated by those skilled in the art that below in conjunction with embodiment, the present invention is described in further detail:
Comparative Examples 1
This Comparative Examples provides a kind of glass fiber reinforced PC composite material, and its composition of raw materials is comprised of each component of following weight part:
71.4 parts of PC;
14 parts of glasses;
30 parts, graphite;
2 parts of silane coupling agents;
4 parts of PC grafting.
In above-mentioned raw materials, all can adopt commercially available prod to realize.
Comparative Examples 2
This Comparative Examples provides a kind of glass fiber reinforced PC composite material, and its composition of raw materials is comprised of each component of following weight part:
80 parts of PC;
30 parts of glasses;
Aluminum oxide 40;
5 parts of silane coupling agents;
6 parts of PC grafting.
In above-mentioned raw materials, all can adopt commercially available prod to realize.
Embodiment 1
The present embodiment provides a kind of high-performance glass fiber reinforced PC heat transfer heat-conductive composite material, and its composition of raw materials is comprised of each component of following weight part:
71.4 parts of PC;
14 parts of glasses;
10 parts, graphite;
2 parts, aluminum oxide;
0.8 part of silane coupling agent;
0.6 part of antioxidant 1010;
1.2 parts of PC grafting.。
In above-mentioned raw materials, all can adopt commercially available prod to realize.
The preparation method of the antistatic glass fiber-reinforced polycarbonate matrix material of above-mentioned a kind of high-performance; it comprises the steps: that specifically the above-mentioned raw materials ratio packs PC, glass, graphite, aluminum oxide, silane coupling agent, antioxidant 1010, PC grafting in stirrer into after repeatedly being uniformly mixed and send in twin screw extruder; melting mixing at the temperature of 255 ℃; the gained melt is extruded by tank cooling by the duplex forcing machine; introduce dicing machine and carry out the pelletizing operation, the gained pellet is described high-performance glass fiber reinforced PC heat transfer heat-conductive composite material.
Described stirring repeatedly refers to stirs three times repeatedly, and each churning time is 40 minutes.The rotating speed of described stirrer is 680 rev/mins.
The rotating speed of described duplex forcing machine is 400 rev/mins.
Described melt is extruded when cooling by tank by the duplex forcing machine, and tank temperature used is 65 ℃.
The rotating speed of described dicing machine is 650 rev/mins.
Adopt the ASTM international standard to carry out its result of performance test to it product of the present embodiment as shown in table 1:
The performance test results of table 1 embodiment 1
By table 1 with as seen from Table 4, the high-performance glass fiber reinforced PC heat transfer heat dissipation composite material that compare the present embodiment provides with Comparative Examples 1, Comparative Examples 2 has good heat dispersion and higher resistance to impact shock.
Embodiment 2
The present embodiment provides a kind of high-performance glass fiber reinforced PC heat transfer heat-conductive composite material, and its composition of raw materials is comprised of each component of following weight part:
75.5 parts of PC;
5 parts of glasses;
15 parts, graphite;
1 part, aluminum oxide;
1 part of silane coupling agent;
0.5 part of antioxidant 1010;
2 parts of PC grafting.
In above-mentioned raw materials, all can adopt commercially available prod to realize.
The preparation method of the antistatic glass fiber-reinforced polycarbonate matrix material of above-mentioned a kind of high-performance, it comprises the steps: that specifically the above-mentioned raw materials ratio packs PC, glass, graphite, aluminum oxide, silane coupling agent, antioxidant 1010, PC grafting in stirrer into after repeatedly being uniformly mixed and send in twin screw extruder,
240 ℃Temperature under melting mixing, the gained melt is extruded by tank cooling by the duplex forcing machine, introduce dicing machine and carry out the pelletizing operation, the gained pellet is described high-performance glass fiber reinforced PC heat transfer heat-conductive composite material.
Described stirring repeatedly refers to stirs three times repeatedly, and each churning time is 40 minutes.The rotating speed of described stirrer is 650 rev/mins.
The rotating speed of described duplex forcing machine is 600 rev/mins.
Described melt is extruded when cooling by tank by the duplex forcing machine, and tank temperature used is 65 ℃.
The rotating speed of described dicing machine is 650 rev/mins.
Adopt the ASTM international standard to carry out its result of performance test to it product of the present embodiment as shown in table 2:
The performance test results of table 2 embodiment 2
By table 2 with as seen from Table 4, the high-performance glass fiber reinforced PC heat transfer heat dissipation composite material that compare the present embodiment provides with Comparative Examples 1, Comparative Examples 2 has good heat dispersion and higher resistance to impact shock.
Embodiment 3
The present embodiment provides a kind of high-performance glass fiber reinforced PC heat transfer heat-conductive composite material, and its composition of raw materials is comprised of each component of following weight part:
72.5 parts of PC;
15 parts of glasses;
5 parts, graphite;
5 parts, aluminum oxide;
0.5 part of silane coupling agent;
1 part of antioxidant 1010;
1 part of PC grafting
In above-mentioned raw materials, all can adopt commercially available prod to realize.
The preparation method of the antistatic glass fiber-reinforced polycarbonate matrix material of above-mentioned a kind of high-performance, it comprises the steps: that specifically the above-mentioned raw materials ratio packs PC, glass, graphite, aluminum oxide, silane coupling agent, antioxidant 1010, PC grafting in stirrer into after repeatedly being uniformly mixed and send in twin screw extruder,
290 ℃Temperature under melting mixing, the gained melt is extruded by tank cooling by the duplex forcing machine, introduce dicing machine and carry out the pelletizing operation, the gained pellet is described high-performance glass fiber reinforced PC heat transfer heat-conductive composite material.
Described stirring repeatedly refers to stirs three times repeatedly, and each churning time is 40 minutes.The rotating speed of described stirrer is 1300 rev/mins.
The rotating speed of described duplex forcing machine is 250 rev/mins.
Described melt is extruded when cooling by tank by the duplex forcing machine, and tank temperature used is 65 ℃.
The rotating speed of described dicing machine is 650 rev/mins.
Adopt the ASTM international standard to carry out its result of performance test to it product of the present embodiment as shown in table 3:
The performance test results of table 3 embodiment 3
Table 4 Comparative Examples 1-2 and embodiment 1-3 Heat Conduction thermal characteristics table
By table 3 with as seen from Table 4, the high-performance glass fiber reinforced PC heat transfer heat dissipation composite material that compare the present embodiment provides with Comparative Examples 1, Comparative Examples 2 has good heat dispersion and higher resistance to impact shock.
Be more than wherein specific implementation of the present invention, it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these apparent replacement forms all belong to protection scope of the present invention.
Claims (8)
1. high-performance glass fiber reinforced PC heat transfer heat-conductive composite material, its composition of raw materials is comprised of each component of following weight part:
PC 61-87 part;
Glass 5-15 part;
Heat transfer heat conduction auxiliary agent 1 5-15 part;
Heat transfer heat conduction auxiliary agent 2 1-5 parts;
Coupling agent 0.5-1 part;
Antioxidant 1010 0.5-1 part;
PC grafting 1-2 part;
Described heat transfer heat conduction auxiliary agent 1 is graphite, and heat transfer heat conduction auxiliary agent 2 is aluminum oxide, and coupling agent is silane coupling agent.
2. the preparation method of the described a kind of glass enhance heat transfer heat conduction PC matrix material of claim 1, it specifically comprises the steps: according to ratio claimed in claim 1 PC, glass, graphite, aluminum oxide, silane coupling agent, antioxidant 1010, the PC grafting is packed in stirrer after repeatedly being uniformly mixed and is sent in twin screw extruder, melting mixing at the temperature of 240-290 ℃, the gained melt is extruded by tank cooling by the duplex forcing machine, introduce dicing machine and carry out the pelletizing operation, the gained pellet is described high-performance glass fiber reinforced PC heat transfer heat-conductive composite material.
3. the preparation method of glass enhance heat transfer heat conduction PC matrix material according to claim 2 is characterized in that: described repeatedly the stirring refer to and repeatedly stir three times, and each churning time is 30-50 minute.
4. the preparation method of glass enhance heat transfer heat conduction PC matrix material according to claim 2, it is characterized in that: the rotating speed of described stirrer is 650-1300 rev/min.
5. the preparation method of glass enhance heat transfer heat conduction PC matrix material according to claim 2, it is characterized in that: the rotating speed of described duplex forcing machine is 250-600 rev/min.
6. the preparation method of glass enhance heat transfer heat conduction PC matrix material according to claim 2 is characterized in that: described melt is extruded when cooling by tank by the duplex forcing machine, and tank temperature used is 60-75 ℃.
7. the preparation method of glass enhance heat transfer heat conduction PC matrix material according to claim 2, it is characterized in that: the rotating speed of described dicing machine is 600-800 rev/min.
8. the application of glass enhance heat transfer heat conduction PC matrix material claimed in claim 1 in LED lamp housing, large-scale cover for luminaire, motor housing, engine outer cover, electric appliance casing, aerospace lighting decoration controlled are manufactured.
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| CN104845343A (en) * | 2015-04-21 | 2015-08-19 | 安徽祈艾特电子科技有限公司 | Heat-dissipation plastic containing carbon nanosphere particles and used for LED lamps and preparation method thereof |
| CN104845342A (en) * | 2015-04-21 | 2015-08-19 | 安徽祈艾特电子科技有限公司 | Antibacterial heat-dissipation plastic for LED lamps and preparation method thereof |
| CN104845345A (en) * | 2015-04-21 | 2015-08-19 | 安徽祈艾特电子科技有限公司 | Glass-fiber reinforced heat-dissipation plastic for LED lamps and preparation method thereof |
| CN104882532A (en) * | 2015-04-21 | 2015-09-02 | 安徽祈艾特电子科技有限公司 | LED lamp radiating plastic and preparation method thereof |
| CN113462158A (en) * | 2021-06-26 | 2021-10-01 | 华为技术有限公司 | Wireless charger shell and wireless charger |
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| CN104559109A (en) * | 2014-12-29 | 2015-04-29 | 东莞市奥能工程塑料有限公司 | Polycarbonate heat-conducting composite material and preparation method thereof |
| CN104845343A (en) * | 2015-04-21 | 2015-08-19 | 安徽祈艾特电子科技有限公司 | Heat-dissipation plastic containing carbon nanosphere particles and used for LED lamps and preparation method thereof |
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| CN104845345A (en) * | 2015-04-21 | 2015-08-19 | 安徽祈艾特电子科技有限公司 | Glass-fiber reinforced heat-dissipation plastic for LED lamps and preparation method thereof |
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| CN113462158A (en) * | 2021-06-26 | 2021-10-01 | 华为技术有限公司 | Wireless charger shell and wireless charger |
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Application publication date: 20131127 |