CN103342890A - Wear-resisting and flame-retardant heat conductive plastic material and preparation method thereof - Google Patents
Wear-resisting and flame-retardant heat conductive plastic material and preparation method thereof Download PDFInfo
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- CN103342890A CN103342890A CN2013102771216A CN201310277121A CN103342890A CN 103342890 A CN103342890 A CN 103342890A CN 2013102771216 A CN2013102771216 A CN 2013102771216A CN 201310277121 A CN201310277121 A CN 201310277121A CN 103342890 A CN103342890 A CN 103342890A
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Abstract
The invention discloses a wear-resisting and flame-retardant heat conductive plastic material and a preparation method thereof. The heat conduction plastic material is prepared from the following raw materials in parts by weight: 90-100 parts of nylon 6, 5-25 parts of polyphenylene sulfide, 130-150 parts of inorganic heat conductive filler, 5-10 parts of polytetrafluoroethylene, 30-50 parts of glass fibre and 2-3 parts of filling agent. According to the preparation method, the inorganic heat conductive filler with high heat conductivity is filled into the polyphenylene sulfide phase to form a heat conductive passage, and a three-continuous phase heat conductive network structure is formed on the basis of a nylon 6/polyphenylene sulfide blend bicontinuous phase structure. Because the heat conductive passage is only required to be formed in the polymer phase, the dosage of the heat conductive filler can be reduced. As a result, the problems on reduction of mechanical property and processing difficulty caused by the large filling amount of the conventional filling type heat conductive polymer can be effectively solved, so that the prepared heat conductive plastic material has the advantages of excellent abrasion resistance and tensile property, high flame retardance, excellent heat-conducting property and the like.
Description
Technical field
The present invention relates to the plastic cement technical field, relate in particular to heat conduction plastic material technical field, be specifically related to heat conduction plastic material of the good and good flame resistance of a kind of wear resisting property and preparation method thereof.
Background technology
Thermally conductive material is in national defense industry and national economy every field extensive application all, as LED Lighting Industry, heat exchange engineering, heating engineering and Electronics and Information Engineering etc.And traditional thermally conductive material mostly is metallic substance, as copper, aluminium etc., but because corrosion resistance of metals energy and building-up properties are relatively poor, limited its application in the heat conduction field, thereby press for exploitation except heat conductivility, also have other excellent comprehensive performances such as light weight, corrosion-resistant, wear-resisting, easy-formation material processed.
Polyphenylene sulfide has advantages such as physical strength height, high temperature resistant, chemical proofing, difficult combustion, Heat stability is good and electrical property be good, still has good high frequency, rigidity and dimensional stability more than the C at 200 °, and has outstanding radiation resistance.Shortcoming is that fragility is big, poor toughness and impact strength are low.
Nylon has excellent mechanical property and electrical property preferably, has advantages such as wear-resisting, oil resistant, anti-solvent, self-lubricating, erosion resistance and good processing properties again, but insulativity, high temperature resistant and impact resistance is all undesirable relatively.
Introduce a kind of flame-retarded heat-conducting nylon 66 composite material and preparation method thereof in the Chinese patent application numbers 201110377637.9, wherein the material of Tian Jiaing is nylon 66, fibrous heat conductive filler, metal nitride, conductive powder, composite flame-retardant agent, oxygenant and lubricant etc., find in the practice, when all raw materials are put into high-speed mixer and mixing, because nylon, fiber and lubricant become mutually and are inhomogeneous, the premix raw material that can not get disperseing.
Introduce a kind of environmental protection heat conduction nylon material and preparation method thereof in the Chinese patent application numbers 201010518230.9, wherein the material of Tian Jiaing is nylon, heat conducting fiber, conductive powder, lubricant, coupling agent and other auxiliary agents etc., its conductive powder addition is 20-70%, finds in the practice that heat conduction is not ideal.
Introduce a kind of heat conduction nylon material manufacture craft in the China Patent No. 201210437377.4, it adds material is nylon, heat conducting fiber, conductive powder, lubricant, coupling agent and other auxiliary agents etc., its nylon addition is 5-70%, heat conducting fiber addition 3-45%, conductive powder addition are 20-70%.Find in the practice that though heat conductivility is good, shock resistance and wear resisting property are undesirable.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, the heat conduction plastic material of the good and high flame retardant of a kind of wear-resisting tensile property is provided.
Another object of the present invention is to provide the preparation method of above-mentioned heat conduction plastic material.
Above-mentioned purpose of the present invention is achieved by following scheme:
A kind of heat conduction plastic material of abrasion resistant fire blocking, its composition of raw materials is made up of the each component of following parts by weight:
6 90～100 parts of nylon;
5～25 parts of polyphenylene sulfides;
130～150 parts of inorganic heat conductive fillers;
5～10 parts of tetrafluoroethylene;
30～50 parts in glass fibre;
2～3 parts of weighting agents.
Above-mentioned nylon 6 is polycaprolactams.
Above-mentioned inorganic heat conductive filler is magnesium hydroxide, perhaps the combination of the arbitrary proportion of magnesium hydroxide and aluminum oxide; The inventor is by discovering, adopt commercially available magnesium hydroxide and aluminum oxide can reduce the resin mechanical property, but adopt commercially available magnesium hydroxide crystal whisker and alumina whisker, because the special construction of whisker, then can improve the mechanical property of whole system, in addition, the contriver discovers that also magnesium hydroxide and aluminum oxide are inorganicss, and resin is organism, if can carry out surface modification to inorganics, then can improve inorganics and be combined situation with the interface of resin, thereby improve heat conductivility and mechanical property etc., therefore, magnesium hydroxide of the present invention and aluminum oxide need adopt magnesium hydroxide crystal whisker after the modification and the alumina whisker after the modification, specifically describe as follows:
Magnesium hydroxide is the magnesium hydroxide crystal whisker after the employing modification; After the described modification magnesium hydroxide crystal whisker, refer to the stearic acid to be properties-correcting agent, the magnesium hydroxide crystal whisker after the wet method surface modification treatment; Described magnesium hydroxide crystal whisker is commercially available magnesium hydroxide crystal whisker;
Aluminum oxide is the alumina whisker after the employing modification; Alumina whisker after the described modification refers to the stearic acid to be properties-correcting agent, the alumina whisker after the wet method surface modification treatment; Described alumina whisker is commercially available alumina whisker.
Above-mentioned magnesium hydroxide and aluminum oxide also play certain fire retardation.
Above-mentioned tetrafluoroethylene adopts commercially available tetrafluoroethylene, and its effect is fire-retardant.
Above-mentioned glass fibre adopts commercially available short glass fiber, the preferred short short glass fiber that length is 3～4.5mm of cutting; Because the contriver is by discovering, short glass fiber and resin-bonded are good, and glass fibre does not expose, whole system mechanical property height.
Above-mentioned stopping composition is calcium carbonate, talcum powder or barium sulfate.
The present invention also provides the preparation method of the heat conduction plastic material of above-mentioned abrasion resistant fire blocking, specifically comprises the steps:
Step 1. adds polyphenylene sulfide and inorganic heat conductive filler in the high-speed mixer, stirs and is kneaded into a phase, and the kneading time is 8 minutes;
Step 2. adds the kneaded material of step 1 preparation from twin screw extruder master spout, nylon 6, tetrafluoroethylene, glass fibre and the weighting agent side spout by twin screw extruder is added, the control extrusion temperature is 210～280 ℃, the melt moment of torsion is 30～70Nm, extrudes after melting mixing is even; Granulation in dicing machine, formed package.
In the above-mentioned steps 1, the inventor allows polyphenylene sulfide form one mutually with inorganic heat conductive filler earlier, after adding nylon 6 by step 2 then, make polyphenylene sulfide, inorganic heat conductive filler and nylon 6 form the three external phase network structures that inorganic heat conductive filler is distributed in polyphenylene sulfide/nylon 6 phase interfacies, thereby improve thermal conductivity.
In the above-mentioned steps 2, the control extrusion temperature is 210～280 ℃, and the melt moment of torsion is 30～70Nm, is combined into the co-continuous phase structure in forcing machine, extrudes after melting mixing is even, by dicing machine granulation, formed package.
Compared with prior art, the present invention has the following effect of having a mind to:
1, the present invention utilizes inorganic heat conductive filler itself to be filled in the polyphenylene sulfide middle thermal conducting path that forms mutually than higher thermal conductivity, three external phase heat conduction network structures have been formed on the basis of nylon 6/ polyphenylene sulfide blended thing co-continuous phase structure, since thermal conducting path only need polymkeric substance one mutually in formation, can reduce the consumption of heat conductive filler, effectively solve problems such as the excessive mechanical properties decrease of bringing of traditional filled-type thermally conductive polymkeric substance loading level, processing difficulties;
2, tetrafluoroethylene of the present invention and inorganic heat conductive filler all have good flame retardant effect, flame retardant effect is lasting, other components during collocation is filled a prescription again, thus the heat conduction plastic material of preparing has advantages such as wear-resisting tensile property excellence, flame retardant resistance height and heat conductivility excellence.
Embodiment
Below in conjunction with specific embodiment the present invention is done description further, but specific embodiment is not done any restriction to the present invention.
Embodiment 1
The heat conduction plastic material of a kind of abrasion resistant fire blocking of present embodiment, its composition of raw materials is made up of the each component of following parts by weight:
6 100 parts of nylon;
15 parts of polyphenylene sulfides;
130 parts of inorganic heat conductive fillers;
10 parts of tetrafluoroethylene;
30 parts in glass fibre;
2 parts of weighting agents.
Above-mentioned inorganic heat conductive filler is magnesium hydroxide and aluminum oxide;
Above-mentioned magnesium hydroxide is the magnesium hydroxide crystal whisker after the modification, its concrete preparation method is: be earlier solvent configuration magnesium hydroxide crystal whisker slurries (mass percent of magnesium hydroxide crystal whisker is 5% in the magnesium hydroxide crystal whisker slurries) with distilled water, behind the stirring and evenly mixing, take by weighing stearic acid (stearic consumption be magnesium hydroxide quality 8%) again and add the magnesium hydroxide crystal whisker slurries, behind 60 ℃ of following modification 1h, through suction filtration, washing, drying, prepare required modified magnesium hydroxide whisker successively.
Above-mentioned aluminum oxide is the alumina whisker after the modification, its concrete preparation method is: be earlier solvent configuration alumina whisker slurries (mass percent of alumina whisker is 5% in the alumina whisker slurries) with distilled water, behind the stirring and evenly mixing, take by weighing stearic acid (stearic consumption be aluminum oxide quality 8%) again and add the alumina whisker slurries, behind 60 ℃ of following modification 1h, through suction filtration, washing, drying, prepare required modified oxidized aluminium whiskers successively.
Above-mentioned glass fibre adopts the short short glass fiber that length is 3～4.5mm of cutting.
Above-mentioned stopping composition is calcium carbonate.
The preparation method of the heat conduction plastic material of above-mentioned abrasion resistant fire blocking specifically comprises the steps:
Step 1. adds polyphenylene sulfide and inorganic heat conductive filler in the high-speed mixer, stirs and is kneaded into a phase, and the kneading time is 8 minutes;
Step 2. adds the kneaded material of step 1 preparation from twin screw extruder master spout, nylon 6, tetrafluoroethylene, glass fibre and the weighting agent side spout by twin screw extruder is added, the control extrusion temperature is 210～280 ℃, the melt moment of torsion is 30～70Nm, extrudes after melting mixing is even; Granulation in dicing machine, formed package.
The heat conduction plastic material of present embodiment preparation after testing, its performance is as follows:
Material friction coefficient 0.25, the tensile strength of material are 70MPa, and thermal conductivity is 1.5w/mk, flexural strength 110MPa, 245 ℃ of heat-drawn wires, shock strength 55J/cm.
Embodiment 2
The heat conduction plastic material of a kind of abrasion resistant fire blocking of present embodiment, its composition of raw materials is made up of the each component of following parts by weight:
6 90 parts of nylon;
15 parts of polyphenylene sulfides;
150 parts of inorganic heat conductive fillers;
10 parts of tetrafluoroethylene;
20 parts in glass fibre;
2 parts of weighting agents.
Above-mentioned inorganic heat conductive filler is magnesium hydroxide; Described magnesium hydroxide is the magnesium hydroxide crystal whisker after the modification, its concrete preparation method is: be earlier solvent configuration magnesium hydroxide crystal whisker slurries (mass percent of magnesium hydroxide crystal whisker is 5% in the magnesium hydroxide crystal whisker slurries) with distilled water, behind the stirring and evenly mixing, take by weighing stearic acid (stearic consumption be magnesium hydroxide quality 8%) again and add the magnesium hydroxide crystal whisker slurries, behind 60 ℃ of following modification 1h, through suction filtration, washing, drying, prepare required modified magnesium hydroxide whisker successively.
Above-mentioned glass fibre adopts the short short glass fiber that length is 3～4.5mm of cutting.
Above-mentioned stopping composition is talcum powder.
The preparation method of the heat conduction plastic material of above-mentioned abrasion resistant fire blocking specifically comprises the steps:
Step 1. adds polyphenylene sulfide and inorganic heat conductive filler in the high-speed mixer, stirs and is kneaded into a phase, and the kneading time is 8 minutes;
Step 2. adds the kneaded material of step 1 preparation from twin screw extruder master spout, with nylon 6, tetrafluoroethylene, glass fibre and weighting agent under the screw combinations that certain intensity is sheared, side spout by twin screw extruder adds, the control extrusion temperature is 210～280 ℃, the melt moment of torsion is 30～70Nm, extrudes after melting mixing is even; Granulation in dicing machine, formed package.
The heat conduction plastic material of present embodiment preparation after testing, its performance is as follows:
Material friction coefficient 0.26, the tensile strength of material are 90MPa, and thermal conductivity is 1.7w/mk, flexural strength 130MPa, 250 ℃ of heat-drawn wires, shock strength 45J/cm.
Embodiment 3
The heat conduction plastic material of a kind of abrasion resistant fire blocking of present embodiment, its composition of raw materials is made up of the each component of following parts by weight:
6 90 parts of nylon;
15 parts of polyphenylene sulfides;
135 parts of inorganic heat conductive fillers;
8 parts of tetrafluoroethylene;
40 parts in glass fibre;
2 parts of weighting agents.
Above-mentioned inorganic heat conductive filler is magnesium hydroxide; Described magnesium hydroxide is the magnesium hydroxide crystal whisker after the modification, its concrete preparation method is: be earlier solvent configuration magnesium hydroxide crystal whisker slurries (mass percent of magnesium hydroxide crystal whisker is 5% in the magnesium hydroxide crystal whisker slurries) with distilled water, behind the stirring and evenly mixing, take by weighing stearic acid (stearic consumption be magnesium hydroxide quality 8%) again and add the magnesium hydroxide crystal whisker slurries, behind 60 ℃ of following modification 1h, through suction filtration, washing, drying, prepare required modified magnesium hydroxide whisker successively.
Above-mentioned glass fibre adopts the short short glass fiber that length is 3～4.5mm of cutting.
Above-mentioned stopping composition is talcum powder.
The preparation method of the heat conduction plastic material of above-mentioned abrasion resistant fire blocking specifically comprises the steps:
Step 1. adds polyphenylene sulfide and inorganic heat conductive filler in the high-speed mixer, stirs and is kneaded into a phase, and the kneading time is 8 minutes;
Step 2. adds the kneaded material of step 1 preparation from twin screw extruder master spout, with nylon 6, tetrafluoroethylene, glass fibre and weighting agent under the screw combinations that certain intensity is sheared, side spout by twin screw extruder adds, the control extrusion temperature is 210～280 ℃, the melt moment of torsion is 30～70Nm, extrudes after melting mixing is even; Granulation in dicing machine, formed package.
The heat conduction plastic material of present embodiment preparation after testing, its performance is as follows:
Material friction coefficient 0.19, the tensile strength of material are 64MPa, and thermal conductivity is 1.3w/mk, flexural strength 112MPa, 235 ℃ of heat-drawn wires, shock strength 53J/cm.
Embodiment 4
The heat conduction plastic material of a kind of abrasion resistant fire blocking of present embodiment, its composition of raw materials is made up of the each component of following parts by weight:
6 90 parts of nylon;
15 parts of polyphenylene sulfides;
140 parts of inorganic heat conductive fillers;
7 parts of tetrafluoroethylene;
32 parts in glass fibre;
2 parts of weighting agents.
Above-mentioned inorganic heat conductive filler is magnesium hydroxide and aluminum oxide;
Above-mentioned magnesium hydroxide is the magnesium hydroxide crystal whisker after the modification, its concrete preparation method is: be earlier solvent configuration magnesium hydroxide crystal whisker slurries (mass percent of magnesium hydroxide crystal whisker is 5% in the magnesium hydroxide crystal whisker slurries) with distilled water, behind the stirring and evenly mixing, take by weighing stearic acid (stearic consumption be magnesium hydroxide quality 8%) again and add the magnesium hydroxide crystal whisker slurries, behind 60 ℃ of following modification 1h, through suction filtration, washing, drying, prepare required modified magnesium hydroxide whisker successively.
Above-mentioned aluminum oxide is the alumina whisker after the modification, its concrete preparation method is: be earlier solvent configuration alumina whisker slurries (mass percent of alumina whisker is 5% in the alumina whisker slurries) with distilled water, behind the stirring and evenly mixing, take by weighing stearic acid (stearic consumption be aluminum oxide quality 8%) again and add the alumina whisker slurries, behind 60 ℃ of following modification 1h, through suction filtration, washing, drying, prepare required modified oxidized aluminium whiskers successively.
Above-mentioned glass fibre adopts the short short glass fiber that length is 3～4.5mm of cutting.
Above-mentioned stopping composition is barium sulfate.
The preparation method of the heat conduction plastic material of above-mentioned abrasion resistant fire blocking specifically comprises the steps:
Step 1. adds polyphenylene sulfide and inorganic heat conductive filler in the high-speed mixer, stirs and is kneaded into a phase, and the kneading time is 8 minutes;
Step 2. adds the kneaded material of step 1 preparation from twin screw extruder master spout, with nylon 6, tetrafluoroethylene, glass fibre and weighting agent under the screw combinations that certain intensity is sheared, side spout by twin screw extruder adds, the control extrusion temperature is 210～280 ℃, the melt moment of torsion is 30～70Nm, extrudes after melting mixing is even; Granulation in dicing machine, formed package.
The heat conduction plastic material of present embodiment preparation after testing, its performance is as follows:
Material friction coefficient 0.18, the tensile strength of material are 60MPa, and thermal conductivity is 1.45w/mk, flexural strength 105MPa, 245 ℃ of heat-drawn wires, shock strength 48J/cm.
Claims (6)
1. the heat conduction plastic material of an abrasion resistant fire blocking, its composition of raw materials is made up of the each component of following parts by weight:
6 90～100 parts of nylon;
5～25 parts of polyphenylene sulfides;
130～150 parts of inorganic heat conductive fillers;
5～10 parts of tetrafluoroethylene;
30～50 parts in glass fibre;
2～3 parts of weighting agents;
Above-mentioned inorganic heat conductive filler is magnesium hydroxide, or the combination of magnesium hydroxide and aluminum oxide.
2. according to the heat conduction plastic material of the described a kind of abrasion resistant fire blocking of claim 1, it is characterized in that described magnesium hydroxide is the modified magnesium hydroxide whisker, described aluminum oxide is modified oxidized aluminium whiskers.
3. according to the heat conduction plastic material of the described a kind of abrasion resistant fire blocking of claim 2, it is characterized in that described modified magnesium hydroxide whisker is is properties-correcting agent with the stearic acid, magnesium hydroxide crystal whisker after the wet method surface modification treatment, described modified oxidized aluminium whiskers is to be properties-correcting agent with the stearic acid, the alumina whisker after the wet method surface modification treatment.
4. according to the heat conduction plastic material of the described a kind of abrasion resistant fire blocking of claim 1, it is characterized in that described glass fibre adopts the short short glass fiber that length is 3～4.5mm of cutting.
5. according to the heat conduction plastic material of the described a kind of abrasion resistant fire blocking of claim 1, it is characterized in that described weighting agent is calcium carbonate, talcum powder or barium sulfate.
6. the preparation method of the heat conduction plastic material of the described abrasion resistant fire blocking of claim 1 is characterized in that this preparation method comprises the steps:
Step 1. adds polyphenylene sulfide and inorganic heat conductive filler in the high-speed mixer, stirs and is kneaded into a phase, and the kneading time is 8 minutes;
Step 2. adds the kneaded material of step 1 preparation from twin screw extruder master spout, nylon 6, tetrafluoroethylene, glass fibre and the weighting agent side spout by twin screw extruder is added, the control extrusion temperature is 210～280 ℃, the melt moment of torsion is 30～70Nm, extrudes after melting mixing is even; Granulation in dicing machine, formed package.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104086984A (en) * | 2014-06-09 | 2014-10-08 | 江苏欣润塑胶有限公司 | Wear-resistant flame-retardant thermal-conductive plastic material |
| CN104164081A (en) * | 2014-06-09 | 2014-11-26 | 江苏欣润塑胶有限公司 | High performance, flame-retardant and heat conductive nano composite plastic material |
| CN105924961A (en) * | 2016-06-30 | 2016-09-07 | 广州大学 | Composite filling material with high thermal conductivity and plasticity |
| CN106672528A (en) * | 2016-01-22 | 2017-05-17 | 上海伟星新型建材有限公司 | Obstacle crossing type tank car for weight carrying |
| CN107501916A (en) * | 2017-08-29 | 2017-12-22 | 太仓卡斯特姆新材料有限公司 | A kind of high flame retardant nylon for automotive trim |
| CN108822533A (en) * | 2018-01-30 | 2018-11-16 | 浙江铧淳塑料有限公司 | A kind of preparation method with self-lubrication and wearability nylon resin |
| CN116469609A (en) * | 2023-04-29 | 2023-07-21 | 开开电缆科技有限公司 | Mineral insulated cable and preparation method thereof |
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| CN102070899A (en) * | 2010-12-30 | 2011-05-25 | 广东银禧科技股份有限公司 | Insulating and heat-conducting polyamide composite material and preparation method thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104086984A (en) * | 2014-06-09 | 2014-10-08 | 江苏欣润塑胶有限公司 | Wear-resistant flame-retardant thermal-conductive plastic material |
| CN104164081A (en) * | 2014-06-09 | 2014-11-26 | 江苏欣润塑胶有限公司 | High performance, flame-retardant and heat conductive nano composite plastic material |
| CN106672528A (en) * | 2016-01-22 | 2017-05-17 | 上海伟星新型建材有限公司 | Obstacle crossing type tank car for weight carrying |
| CN106672528B (en) * | 2016-01-22 | 2018-08-14 | 上海伟星新型建材有限公司 | Obstacle crossing type weight carries tank |
| CN105924961A (en) * | 2016-06-30 | 2016-09-07 | 广州大学 | Composite filling material with high thermal conductivity and plasticity |
| CN107501916A (en) * | 2017-08-29 | 2017-12-22 | 太仓卡斯特姆新材料有限公司 | A kind of high flame retardant nylon for automotive trim |
| CN108822533A (en) * | 2018-01-30 | 2018-11-16 | 浙江铧淳塑料有限公司 | A kind of preparation method with self-lubrication and wearability nylon resin |
| CN116469609A (en) * | 2023-04-29 | 2023-07-21 | 开开电缆科技有限公司 | Mineral insulated cable and preparation method thereof |
| CN116469609B (en) * | 2023-04-29 | 2024-01-30 | 开开电缆科技有限公司 | Mineral insulated cable and preparation method thereof |
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