CN112080136A - Halogen-free high-flame-retardant heat-conducting nylon composite material for LED lamp - Google Patents
Halogen-free high-flame-retardant heat-conducting nylon composite material for LED lamp Download PDFInfo
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- CN112080136A CN112080136A CN201910507778.4A CN201910507778A CN112080136A CN 112080136 A CN112080136 A CN 112080136A CN 201910507778 A CN201910507778 A CN 201910507778A CN 112080136 A CN112080136 A CN 112080136A
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- 239000003063 flame retardant Substances 0.000 title claims abstract description 70
- 239000004677 Nylon Substances 0.000 title claims abstract description 41
- 229920001778 nylon Polymers 0.000 title claims abstract description 41
- 239000002131 composite material Substances 0.000 title claims abstract description 40
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 52
- 239000012744 reinforcing agent Substances 0.000 claims abstract description 17
- 239000002994 raw material Substances 0.000 claims abstract description 5
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 13
- 239000000347 magnesium hydroxide Substances 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 13
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical group [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 7
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 claims description 5
- 229910052907 leucite Inorganic materials 0.000 claims description 5
- 229910052664 nepheline Inorganic materials 0.000 claims description 5
- 239000010434 nepheline Substances 0.000 claims description 5
- NWXHSRDXUJENGJ-UHFFFAOYSA-N calcium;magnesium;dioxido(oxo)silane Chemical compound [Mg+2].[Ca+2].[O-][Si]([O-])=O.[O-][Si]([O-])=O NWXHSRDXUJENGJ-UHFFFAOYSA-N 0.000 claims description 4
- 229910052637 diopside Inorganic materials 0.000 claims description 4
- 239000010433 feldspar Substances 0.000 claims description 4
- 239000002210 silicon-based material Substances 0.000 claims description 4
- 239000010453 quartz Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 238000000071 blow moulding Methods 0.000 claims description 2
- 238000005266 casting Methods 0.000 claims description 2
- 238000000748 compression moulding Methods 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 claims description 2
- 238000001746 injection moulding Methods 0.000 claims description 2
- 238000000465 moulding Methods 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 229920000232 polyglycine polymer Polymers 0.000 claims 2
- 238000005286 illumination Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000002861 polymer material Substances 0.000 abstract description 2
- 239000004033 plastic Substances 0.000 description 17
- 229920003023 plastic Polymers 0.000 description 17
- 238000011056 performance test Methods 0.000 description 6
- 239000011347 resin Substances 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- -1 inorganic compound magnesium hydroxide Chemical class 0.000 description 3
- 229910010272 inorganic material Inorganic materials 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- FYYHWMGAXLPEAU-IGMARMGPSA-N magnesium-24 Chemical compound [24Mg] FYYHWMGAXLPEAU-IGMARMGPSA-N 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 239000002470 thermal conductor Substances 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
Classifications
-
- 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
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- 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
- C08K3/34—Silicon-containing compounds
-
- 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
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
-
- 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
-
- 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
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/2224—Magnesium hydroxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/22—Halogen free composition
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
A halogen-free high-flame-retardant heat-conducting nylon composite material for LED lamps belongs to the technical field of high polymer materials. The composite material comprises the following raw materials in percentage by weight: 15-55% of nylon, 5-55% of flame retardant and 8-50% of halogen-free heat-conducting flame-retardant reinforcing agent, the composite material has excellent heat-conducting property, the heat-conducting coefficient can reach 0.8-3W/m.K, and the flame-retardant property can reach UL-94-V0 level. The halogen-free high-flame-retardant heat-conducting nylon composite material disclosed by the invention is low in production cost, good in heat-conducting and flame-retardant properties, and can be used in the fields of LED illumination, automobiles, electronic appliances and the like.
Description
Technical Field
The invention belongs to the technical field of high polymer materials, and particularly relates to a halogen-free high-flame-retardant heat-conducting nylon composite material for an LED lamp.
Background
The LED lighting technology meets the requirements of people on energy conservation and emission reduction, so the LED lighting technology is widely applied in the global lighting industry in recent years, the heat generated by a light source is timely LED out when the existing LED lighting product is used, otherwise, the light efficiency and the service life of a lamp are influenced by the temperature rise of an LED junction, once the junction temperature of the LED exceeds the highest critical temperature which can be borne by a device, the light output characteristic of the LED is permanently attenuated, the high requirement on the integral heat dissipation capacity of a workpiece is provided, and the selection of a thermal interface material with good heat conduction capacity and high temperature resistance is particularly important. At present, aluminum is mainly used as a heat conducting base material for a heat dissipation system of an LED lighting product, but the aluminum material has the problems of heavy weight, complex processing technology and the like, and with the international wide popularization of replacing metal materials with plastics in the fields of petrochemical industry, machinery, aerospace, civil use and the like, the plastics rapidly occupy a wide market with the advantages of light weight, corrosion resistance and the like, and show the outstanding advantage of replacing metal for use. Compared with the traditional aluminum material, the LED lighting product made of the heat-conducting plastic has the advantages of light weight, environmental protection, safety, high design freedom, convenience in processing, simpler starting system, lower system cost and the like. However, the current heat-conducting plastics have the problems of weak heat-conducting capability, complex process, increased cost and the like caused by large addition amount of heat-conducting fillers.
Nylon is one of five engineering plastics, has excellent mechanical property, wear resistance, corrosion resistance, thermal stability and fatigue resistance, is widely used in the fields of automobiles, electrical appliances, mechanical parts and the like by replacing metals, but because the thermal conductivity coefficient of nylon is too low, the thermal conductivity coefficient of common nylon materials is only about 0.30W/m.K, belongs to a poor thermal conductor, and cannot meet the requirement of thermal interface materials on material heat dissipation. In addition, the nylon has poor flame retardant effect, the traditional halogen flame retardant has the problems of high price, high cost, toxic gas generation and the like, and the inorganic compound magnesium hydroxide serving as the flame retardant overcomes many defects of the halogen flame retardant, but the inorganic compound magnesium hydroxide serving as the flame retardant has the requirement that the addition amount is about 60 percent to achieve the flame retardant use, so the mechanical property of the material is seriously influenced, and the use of the inorganic compound magnesium hydroxide in the fields of devices which need to have certain heat conduction and high flame retardant function, such as civil electronic appliances, illumination, communication, military industry and the like, is greatly limited.
Aiming at the defects of the existing nylon materials and the requirements of the heat-conducting plastics for the LED lamp, the development of a nylon composite material with good heat-conducting capability and halogen-free high flame retardant property is urgently needed.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to design and provide a technical scheme of a halogen-free high-flame-retardant heat-conducting nylon composite material for an LED lamp.
The halogen-free high-flame-retardant heat-conducting nylon composite material for the LED lamp is characterized by comprising the following raw materials in percentage by weight:
1) 15-55% of nylon
2) 5-55% of flame retardant
3) 8-50% of halogen-free heat-conducting flame-retardant reinforcing agent
The flame retardant is magnesium hydroxide;
the halogen-free heat-conducting flame-retardant reinforcing agent is a silicon-based compound, and the silicon-based compound is one or a mixture of any more of diopside, nepheline, leucite, feldspar, serpentine and quartz.
The halogen-free high-flame-retardant heat-conducting nylon composite material for the LED lamp is characterized by comprising the following raw materials in percentage by weight:
1) 20-50% of nylon
2) 10-50% of flame retardant
3) 12-45% of halogen-free heat-conducting flame-retardant reinforcing agent.
The halogen-free high-flame-retardant heat-conducting nylon composite material for the LED lamp is characterized in that the powder mesh number of the flame retardant and the halogen-free heat-conducting flame-retardant reinforcing agent is 600-3000 meshes.
The halogen-free high-flame-retardant heat-conducting nylon composite material for the LED lamp is characterized in that the nylon is PA6 or PA 66.
The halogen-free high-flame-retardant heat-conducting nylon composite material for the LED lamp is characterized in that the heat conductivity of the composite material is 0.8-3W/m.K.
The halogen-free high-flame-retardant heat-conducting nylon composite material for the LED lamp is characterized in that the flame retardant property of the composite material is UL-94-V0 grade.
The halogen-free high-flame-retardant heat-conducting nylon composite material for the LED lamp is characterized in that the composite material is formed by injection molding, extrusion molding, compression molding, blow molding or casting molding.
The halogen-free high-flame-retardant heat-conducting nylon composite material for the LED lamp is applied as a special high-heat-conducting flame-retardant material for the LED lamp.
Compared with the prior art, the invention has the following beneficial effects: according to the halogen-free high-flame-retardance heat-conducting nylon composite material for the LED lamp, the halogen-free heat-conducting flame-retardant reinforcing agent is added, and the flame-retardant synergistic enhancement effect of the halogen-free heat-conducting flame-retardant reinforcing agent and magnesium hydroxide is utilized, so that the addition amount of magnesium hydroxide serving as a flame retardant can be effectively reduced, the serious reduction of the overall mechanical property of the material is avoided, meanwhile, the production cost of the material is low, the good heat-conducting and flame-retardant properties can be considered, and the halogen-free high-flame-retardance heat-conducting nylon composite material.
Detailed Description
The present invention is further illustrated by the following specific examples.
Example 1
According to the mass percentage, 38 percent of 1200-mesh magnesium hydroxide and 34 percent of halogen-free heat-conducting flame-retardant reinforcing agent [ 20 percent of leucite and 14 percent of nepheline ] are taken to be put into a mixing stirrer to be uniformly mixed, and then the mixture and the nylon resin PA 628 percent are extruded and granulated by a double-screw extruder, thus obtaining the high heat-conducting plastic product. The flame retardant property of the composite material obtained by the performance test is UL-94-V0 grade, and the thermal conductivity coefficient of a sample measured by a thermal conductivity coefficient tester is 1.3W/m.K after the obtained thermal conductive plastic is melted and molded.
Example 2
According to the mass percentage, 25 percent of magnesium hydroxide with 1600 meshes and 42 percent of halogen-free heat-conducting flame-retardant reinforcing agent [ 32 percent of diopside and 10 percent of feldspar ] are taken to be put into a mixing stirrer to be uniformly mixed, and then the mixture and the nylon resin PA 633 percent are extruded and granulated by a double-screw extruder, so that the high-heat-conducting plastic product is obtained. The flame retardant property of the composite material obtained by the performance test is UL-94-V0 grade, and the thermal conductivity coefficient of a sample measured by a thermal conductivity coefficient tester is 0.85W/m.K after the obtained thermal conductive plastic is melted and molded.
Example 3
According to the mass percentage, 35 percent of 800-mesh magnesium hydroxide and 18 percent of halogen-free heat-conducting flame-retardant reinforcing agent [ 10 percent of serpentine and 8 percent of quartz ] are taken to be placed in a mixing stirrer to be uniformly mixed, and then the mixture and nylon resin PA 6647 percent are extruded and granulated by a double-screw extruder, thus obtaining the high heat-conducting plastic product. The flame retardant property of the composite material obtained by the performance test is UL-94-V0 grade, and the thermal conductivity coefficient of a sample measured by a thermal conductivity coefficient tester is 1.6W/m.K after the obtained thermal conductive plastic is melted and molded.
Example 4
According to the mass percentage, 15 percent of 2200 mesh magnesium hydroxide and 47 percent of halogen-free heat-conducting flame-retardant reinforcing agent [ 20 percent of leucite, 17 percent of diopside and 10 percent of serpentine ] are taken to be put into a mixing stirrer to be uniformly mixed, and then the mixture and nylon resin PA 6638 percent are extruded and granulated by a double-screw extruder, thus obtaining the high heat-conducting plastic product. The flame retardant property of the composite material obtained by the performance test is UL-94-V0 grade, and the thermal conductivity coefficient of a sample measured by a thermal conductivity coefficient tester is 1.3W/m.K after the obtained thermal conductive plastic is melted and molded.
Example 5
According to the mass percentage, 28 percent of 2500-mesh magnesium hydroxide and 36 percent of halogen-free heat-conducting flame-retardant reinforcing agent [ 10 percent of feldspar, 10 percent of leucite and 16 percent of nepheline ] are taken to be placed in a mixing stirrer to be uniformly mixed, and then the mixture and the nylon resin PA 636 percent are extruded and granulated by a double-screw extruder, so that the high-heat-conducting plastic product is obtained. The flame retardant property of the composite material obtained by the performance test is UL-94-V0 grade, and the thermal conductivity coefficient of a sample measured by a thermal conductivity coefficient tester is 1.1W/m.K after the obtained thermal conductive plastic is melted and molded.
Example 6
According to the mass percentage, after being uniformly mixed in a mixing stirrer, 45 percent of 1500-mesh magnesium hydroxide and 24 percent of halogen-free heat-conducting flame-retardant reinforcing agent [ 14 percent of nepheline and 10 percent of serpentine ] are taken and extruded and granulated by a double-screw extruder together with the PA 631 percent of nylon resin, and the high-heat-conducting plastic product is obtained. The flame retardant property of the composite material obtained by the performance test is UL-94-V0 grade, and the thermal conductivity coefficient of a sample measured by a thermal conductivity coefficient tester is 1.2W/m.K after the obtained thermal conductive plastic is melted and molded.
Claims (8)
1. The halogen-free high-flame-retardant heat-conducting nylon composite material for the LED lamp is characterized by comprising the following raw materials in percentage by weight:
1) 15-55% of nylon
2) 5-55% of flame retardant
3) 8-50% of halogen-free heat-conducting flame-retardant reinforcing agent
The flame retardant is magnesium hydroxide;
the halogen-free heat-conducting flame-retardant reinforcing agent is a silicon-based compound, and the silicon-based compound is one or a mixture of any more of diopside, nepheline, leucite, feldspar, serpentine and quartz.
2. The halogen-free high-flame-retardant heat-conducting nylon composite material for the LED lamp as claimed in claim 1, characterized in that the composite material comprises the following raw materials in percentage by weight:
1) 20-50% of nylon
2) 10-50% of flame retardant
3) 12-45% of halogen-free heat-conducting flame-retardant reinforcing agent.
3. The halogen-free high flame retardant heat conductive nylon composite material for the LED lamp as claimed in claim 1 or 2, wherein the powder mesh number of the flame retardant and the halogen-free heat conductive flame retardant reinforcing agent is 600-3000 meshes.
4. The halogen-free high-flame-retardant heat-conducting nylon composite material for the LED lamp as claimed in claim 1 or 2, wherein the nylon is PA6 or PA 66.
5. The halogen-free high-flame-retardant heat-conducting nylon composite material for the LED lamp as claimed in claim 1 or 2, wherein the thermal conductivity of the composite material is 0.8-3W/m.K.
6. The halogen-free high-flame-retardant heat-conducting nylon composite material for the LED lamp as claimed in claim 1 or 2, wherein the flame retardant property of the composite material is UL-94-V0 grade.
7. The halogen-free high flame retardant heat conductive nylon composite material for the LED lamp according to claim 1 or 2, wherein the composite material is formed by injection molding, extrusion molding, compression molding, blow molding or casting molding.
8. The use of the halogen-free high flame retardant heat conductive nylon composite material for LED lamps according to claim 1 or 2 as a high heat conductive flame retardant material specially used for LED lamps.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910507778.4A CN112080136A (en) | 2019-06-12 | 2019-06-12 | Halogen-free high-flame-retardant heat-conducting nylon composite material for LED lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910507778.4A CN112080136A (en) | 2019-06-12 | 2019-06-12 | Halogen-free high-flame-retardant heat-conducting nylon composite material for LED lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112080136A true CN112080136A (en) | 2020-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910507778.4A Pending CN112080136A (en) | 2019-06-12 | 2019-06-12 | Halogen-free high-flame-retardant heat-conducting nylon composite material for LED lamp |
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| Country | Link |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080021143A1 (en) * | 2006-07-11 | 2008-01-24 | Helmut Thullen | Polyamide moulding compound and use thereof |
| CN103059561A (en) * | 2013-01-16 | 2013-04-24 | 合肥杰事杰新材料股份有限公司 | Nylon composite material and preparation method thereof |
| CN104672897A (en) * | 2015-03-05 | 2015-06-03 | 安徽科聚新材料有限公司 | Flame-retardant heat-conduction anti-static nylon 66 composite material and preparation method thereof |
| CN108624039A (en) * | 2018-04-25 | 2018-10-09 | 中广核俊尔新材料有限公司 | Low linear expansion coefficient, high heat conduction polyamide-based insulating composite material and preparation method thereof |
-
2019
- 2019-06-12 CN CN201910507778.4A patent/CN112080136A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080021143A1 (en) * | 2006-07-11 | 2008-01-24 | Helmut Thullen | Polyamide moulding compound and use thereof |
| CN103059561A (en) * | 2013-01-16 | 2013-04-24 | 合肥杰事杰新材料股份有限公司 | Nylon composite material and preparation method thereof |
| CN104672897A (en) * | 2015-03-05 | 2015-06-03 | 安徽科聚新材料有限公司 | Flame-retardant heat-conduction anti-static nylon 66 composite material and preparation method thereof |
| CN108624039A (en) * | 2018-04-25 | 2018-10-09 | 中广核俊尔新材料有限公司 | Low linear expansion coefficient, high heat conduction polyamide-based insulating composite material and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 万仁浦 罗英俊: "《采油技术手册 修订本 第8分册 稠油热采工程技术》", 31 December 1996, 石油工业出版社 * |
| 樊新民 车剑飞: "《工程塑料及其应用》", 30 April 2006, 机械工业出版社 * |
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Application publication date: 20201215 |
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| RJ01 | Rejection of invention patent application after publication |