CN103146187B - Polyamide composite material as well as preparation method and use thereof - Google Patents
Polyamide composite material as well as preparation method and use thereof Download PDFInfo
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- CN103146187B CN103146187B CN201310108272.9A CN201310108272A CN103146187B CN 103146187 B CN103146187 B CN 103146187B CN 201310108272 A CN201310108272 A CN 201310108272A CN 103146187 B CN103146187 B CN 103146187B
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/875—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling for achieving a non-uniform temperature distribution, e.g. using barrels having both cooling and heating zones
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92895—Barrel or housing
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention discloses a polyamide composite material. The polyamide composite material comprises the following components in percentage by weight: 30%-80% of polyamide, 10%-50% of glass fiber, 5%-30% of heat-conducting filler, 0.1%-2% of a heat stabilizer and 0.1%-0.5% of a lubricant. A special screw assembly design on a twin-screw extruder is adopted, so that the powder can be well dispersed without adding a coupling agent, and the comprehensive performances are still better. In the composite material, the nanometer heat conducting filler is added, so that the heat conducting performance of the composite material is improved under the condition that the mechanical performance is not reduced, the using temperature of the composite material is increased to 180 DEG C and the service life of the composite material is prolonged.
Description
Technical field
The invention belongs to field of polymer composite material, be specifically related to a kind of polyamide compoiste material, Preparation Method And The Use.
Background technology
Polymeric amide is the one of engineering plastics.Polymeric amide, owing to having excellent mechanical property, thermal characteristics, chemical resistant properties, wear resistance, is widely used in trolley part, electronic unit, electrician's parts etc.Fiberglass reinforced modified polyamide is widely used in automobile component as the substitute of metal especially; in recent years; along with the requirement of automotive light weight technology development; heat-stabilised poly acid amides alternative metals is used for engine circumferential component; such as engine bonnet, motor intake manifold etc.; because the technology adopting interpolation thermo-stabilizer to improve the thermostability of polymeric amide can only ensure that polymeric amide life-time service temperature is lower than 150 DEG C; material is lifetime when more than 150 DEG C, and the working temperature of engine room usually can higher than 160 DEG C.But existingly come in the technology of modification by adding conduction powder, need to add coupling agent to improve the performance of matrix material, and the material modified glass that do not add of this conduction powder strengthens, and cannot be applied to motor car engine peripheral appendix member.
Summary of the invention
Technical problem to be solved by this invention there is provided a kind of polyamide compoiste material of improvement.
Another technical problem to be solved by this invention there is provided a kind of preparation method of polyamide compoiste material.
Another technical problem to be solved by this invention there is provided a kind of purposes of polyamide compoiste material.
The technical scheme that the present invention adopts for its technical problem of solution is: a kind of polyamide compoiste material, comprise polymeric amide, glass fibre, thermo-stabilizer and lubricant, described matrix material also comprises heat conductive filler, described heat conductive filler is nano powder, be benchmark by the gross weight of described matrix material, the weight percent content of each component is as follows:
Preferably, described polymeric amide is one or both in polyamide 6, polyamide 66.
Preferably, described glass fibre is short glass fiber, and its length is 2-8mm.
Preferably, described heat conductive filler is carbon, Fe
3o
4, CuO, Al
2o
3in one or more.
Preferably, described thermo-stabilizer is one or both in mantoquita, salt compounded of iodine, oxidation inhibitor 1098.
Preferably, described lubricant is longer chain fatty acid or hard soap.
A kind of preparation method of described matrix material, comprise the following steps: by the lubricant in formula, thermo-stabilizer and polymeric amide in mass ratio together with join in high speed mixer and be mixed to get pre-composition, the first paragraph of pre-composition from twin screw extruder is added, heat conductive filler and glass fibre are added from the 4th of described twin screw extruder the section and the 6th section respectively, with the melt-mixing in described twin screw extruder, namely obtain described matrix material by die head granulation;
The screw speed of described twin screw extruder is 300-500rpm, the temperature of described twin screw extruder is: first paragraph: 220-240 DEG C, second segment: 230-280 DEG C, the 3rd section: 230-280 DEG C, the 4th section: 235-285 DEG C, the 5th section: 235-285 DEG C, the 6th section: 235-285 DEG C, the 7th section: 235-285 DEG C, the 8th section: 230-280 DEG C, the 9th section: 230-280 DEG C, melt temperature: 250-320 DEG C.
Preferably, described heat conductive filler and described glass fibre are forced to add from the side.
Preferably, the twin screw of described twin screw extruder is cord wood twin screw, it is equipped with many group kneading blocks and gear mixing pieces.
A kind of described purposes of matrix material in motor car engine circumferential component.
The life-time service temperature >160 DEG C of described motor car engine circumferential component, tensile strength >125MPa, such as hood, motor intake manifold.
Due to the enforcement of above technical scheme, the present invention compared with prior art tool has the following advantages:
Powder and glass are forced feeding from the different lateral sections of forcing machine by the present invention, by the special screw combinations design on twin screw extruder, the basis not needing interpolation coupling agent improves powder greatly, glass degree of scatter in the composite, obtain high performance matrix material, meet the materials'use requirement of engine peripheral appendix member;
This matrix material is by adding heat conductive filler, under the prerequisite not reducing mechanical property, improve the heat conductivility of this matrix material, reduce heat accumulation in the composite, the use temperature of matrix material is increased to 180 DEG C, extends the work-ing life of matrix material;
Matrix material of the present invention has thermal conductivity, enhancement, thermostability, and processing is economical convenient.
Embodiment
To be further described the present invention by specific embodiment below, but described embodiment being only for explaining explanation the present invention, is not restriction the present invention.
Embodiment 1
Formula is:
Polyamide 6 is placed in 120 DEG C of rotatory driers dry 2 hours, moisture content controls 0.5% once; Take stearic acid, CuI, KI and dried polyamide 6 powder by weight percentage, under being placed in high speed mixer 1500rpm, mixing obtains polyamide 6 pre-composition in 5 minutes.Join in forcing machine by polyamide 6 pre-composition, forcing machine sets, first paragraph: 220 DEG C, second segment 240 DEG C, 3rd section: 240 temperature, the 4th section: 245 DEG C, the 5th section: 240 DEG C, 6th section 245 DEG C, 7th section: 240 DEG C, the 8th section: 240 DEG C, the 9th section: 240 DEG C, screw speed 350rpm, melt temperature is 250 DEG C; Nano-carbon powder is forced feeding from forcing machine the 4th section of side, and the short glass fiber of length 4mm forces feeding from forcing machine the 6th section, then with melt-mixing, obtains matrix material by the material strip extruded by forcing machine after water-cooled, pelletizing, screening.
Embodiment 2
Formula is:
Polyamide 66 is placed in 120 DEG C of rotatory driers dry 2 hours, moisture content controls 0.5% once; Take stearic acid, CuI, KI and polyamide 66 powder by weight percentage, under being placed in high speed mixer 1500rpm, mixing obtains polyamide 66 pre-composition in 5 minutes.Join in forcing machine by polyamide 66 pre-composition, forcing machine sets, first paragraph: 240 DEG C, second segment 280 DEG C, 3rd section: 280 temperature, the 4th section: 285 DEG C, the 5th section: 280 DEG C, 6th section 285 DEG C, 7th section: 280 DEG C, the 8th section: 280 DEG C, the 9th section: 280 DEG C, screw speed 350rpm, melt temperature 310 DEG C; Nano-carbon powder is forced feeding from forcing machine the 4th section of side, and length is that the short glass fiber of 4mm forces feeding from forcing machine the 6th section, then with melt-mixing, obtains matrix material by the material strip extruded by forcing machine after water-cooled, pelletizing, screening.
Embodiment 3
Formula is:
Polyamide 6 is placed in 120 DEG C of rotatory driers dry 2 hours, moisture content controls 0.5% once; Take stearic acid, oxidation inhibitor 1098 and polyamide 6 powder by weight percentage, under being placed in high speed mixer 1500rpm, mixing obtains polyamide 6 pre-composition in 5 minutes.Join in forcing machine by polyamide 6 pre-composition, forcing machine sets, first paragraph: 220 DEG C, second segment 240 DEG C, 3rd section: 240 temperature, the 4th section: 245 DEG C, the 5th section: 240 DEG C, 6th section 245 DEG C, 7th section: 240 DEG C, the 8th section: 240 DEG C, the 9th section: 240 DEG C, screw speed 350rpm, melt temperature 250 DEG C; Nanometer CuO powder is forced feeding from forcing machine the 4th section of side, and length is that the short glass fiber of 4mm forces feeding from forcing machine the 6th section, then with melt-mixing, obtains matrix material by the material strip extruded by forcing machine after water-cooled, pelletizing, screening.
Embodiment 4
Formula is:
Polyamide 66 is placed in 120 DEG C of rotatory driers dry 2 hours, moisture content controls 0.5% once; Take stearic acid, oxidation inhibitor 1098 and polyamide 66 powder by weight percentage, under being placed in high speed mixer 1500rpm, mixing obtains polyamide 66 pre-composition in 5 minutes.Join in forcing machine by polyamide 66 pre-composition, forcing machine sets, first paragraph: 240 DEG C, second segment 280 DEG C, 3rd section: 280 temperature, the 4th section: 285 DEG C, the 5th section: 280 DEG C, 6th section 285 DEG C, 7th section: 280 DEG C, the 8th section: 280 DEG C, the 9th section: 280 DEG C, screw speed 350rpm, melt temperature 320 DEG C; Nano heat-conductive CuO powder is forced feeding from forcing machine the 4th section of side, length is that the short glass fiber of 4mm forces feeding from forcing machine the 6th section, then with melt-mixing, after water-cooled, pelletizing, screening, matrix material is obtained by the material strip extruded by forcing machine.
Comparative example 1
Formula is:
Polyamide 6 is placed in 120 DEG C of rotatory driers dry 2 hours, moisture content controls 0.5% once; Take stearic acid, CuI, KI and polyamide 6 powder by weight percentage, under being placed in high speed mixer 1500rpm, mixing obtains polyamide 6 pre-composition in 5 minutes.Join in forcing machine by polyamide 6 pre-composition, forcing machine sets, first paragraph: 220 DEG C, second segment 240 DEG C, 3rd section: 240 temperature, the 4th section: 245 DEG C, the 5th section: 240 DEG C, 6th section 245 DEG C, 7th section: 240 DEG C, the 8th section: 240 DEG C, the 9th section: 240 DEG C, screw speed 350rpm, melt temperature 250 DEG C; Length is that the short glass fiber of 4mm forces feeding from forcing machine the 6th section, then with melt-mixing, obtains matrix material by the material strip extruded by forcing machine after water-cooled, pelletizing, screening.
Comparative example 2
Formula is:
Polyamide 66 is placed in 120 DEG C of rotatory driers dry 2 hours, moisture content controls 0.5% once; Take stearic acid, oxidation inhibitor 1098 and polyamide 66 powder by weight percentage, under being placed in high speed mixer 1500rpm, mixing obtains polyamide 66 pre-composition in 5 minutes.Join in forcing machine by polyamide 66 pre-composition, forcing machine sets, first paragraph: 240 DEG C, second segment 280 DEG C, 3rd section: 280 temperature, the 4th section: 285 DEG C, the 5th section: 280 DEG C, 6th section 285 DEG C, 7th section: 280 DEG C, the 8th section: 280 DEG C, the 9th section: 280 DEG C, screw speed 350rpm, melt temperature 320 DEG C; The short glass fiber by length being 4mm, from forcing machine the 6th section pressure feeding, then with melt-mixing, obtains matrix material by the material strip extruded by forcing machine after water-cooled, pelletizing, screening.
Performance evaluation:
Modified particles obtained for the above embodiments 1-4 and comparative example 1-2 is placed in 120 DEG C of vacuum drying ovens 2 hours, obtains standard ISO with injection moulding machine and stretch and impact specimen, sample to be positioned in 180 DEG C of baking ovens 0,200,500 and 1000 hours, take out cool to room temperature, test tensile and impact properties.Result is as shown in table 1:
Table 1
As can be seen from Table 1, comparative example is conventional heat stable material, and at 180 DEG C, after 500 hours, the mechanical properties decrease of material is obvious, and after 1000 hours, material property is lower than 80% of original performance.And the polyamide modified matrix material of the heat conducting nano adopting the present invention to obtain, i.e. embodiment 1-4, material, at 180 DEG C, still keeps 90% of original performance after 1000h.
Above to invention has been detailed description, but the present invention is not limited to above embodiment, and the equivalence change that all essence according to the present invention is done or modification, all within protection scope of the present invention.
Claims (9)
1. a polyamide compoiste material, is made up of polymeric amide, glass fibre, thermo-stabilizer, lubricant and heat conductive filler, it is characterized in that: described heat conductive filler is nano-carbon powder, nanometer Fe
3o
4one or more in powder, nanometer CuO powder, be benchmark by the gross weight of described matrix material, the weight percent content of each component is as follows:
Kymene 0%-80%;
Glass fibre 10%-50%;
Heat conductive filler 5%-30%;
Thermo-stabilizer 0.1%-2%;
Lubricant 0.1%-0.5%.
2. matrix material according to claim 1, is characterized in that: described polymeric amide is one or both in polyamide 6, polyamide 66.
3. matrix material according to claim 1, is characterized in that: described glass fibre is short glass fiber, and its length is 2-8mm.
4. matrix material according to claim 1, is characterized in that: described thermo-stabilizer is one or both in mantoquita, salt compounded of iodine, oxidation inhibitor 1098.
5. matrix material according to claim 1, is characterized in that: described lubricant is longer chain fatty acid or hard soap.
6. the preparation method of the matrix material according to any one of claim 1-5, it is characterized in that: comprise the following steps: by the lubricant in formula, thermo-stabilizer and polymeric amide in mass ratio together with join in high speed mixer and be mixed to get pre-composition, the first paragraph of pre-composition from twin screw extruder is added, heat conductive filler and glass fibre are added from the 4th of described twin screw extruder the section and the 6th section respectively, with the melt-mixing in described twin screw extruder, namely obtain described matrix material by die head granulation;
The screw speed of described twin screw extruder is 300-500rpm, the temperature of described twin screw extruder is: first paragraph: 220-240 DEG C, second segment: 230-280 DEG C, the 3rd section: 230-280 DEG C, the 4th section: 235-285 DEG C, the 5th section: 235-285 DEG C, the 6th section: 235-285 DEG C, the 7th section: 235-285 DEG C, the 8th section: 230-280 DEG C, the 9th section: 230-280 DEG C, melt temperature: 250-320 DEG C.
7. the preparation method of matrix material according to claim 6: it is characterized in that: described heat conductive filler and described glass fibre are forced to add from the side.
8. the preparation method of matrix material according to claim 6: it is characterized in that: the twin screw of described twin screw extruder is cord wood twin screw, it is equipped with many group kneading blocks and gear mixing pieces.
9. the purposes of the matrix material according to any one of claim 1-5 in motor car engine circumferential component.
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| CN201310108272.9A CN103146187B (en) | 2013-03-29 | 2013-03-29 | Polyamide composite material as well as preparation method and use thereof |
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| CN103146187B true CN103146187B (en) | 2015-03-04 |
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| CN103304997B (en) * | 2013-07-16 | 2015-02-25 | 广东泰昊新材料科技有限公司 | Acid-corrosion-free and high electric insulation red phosphorus flame retarded reinforced nylon and production method thereof |
| CN103665844A (en) * | 2013-11-29 | 2014-03-26 | 天津金发新材料有限公司 | High-welding-performance glass fiber reinforced polyamide composite material as well as preparation method and application thereof |
| CN103694693B (en) * | 2013-11-29 | 2016-01-20 | 天津金发新材料有限公司 | The reinforced polyamide matrix material that a kind of weld flash is improved and Synthesis and applications thereof |
| CN105176079B (en) * | 2015-09-16 | 2018-10-23 | 乐昌市沃府新材料有限公司 | A kind of short glass fiber enhancing modified nylon material and preparation method thereof |
| CN105462252A (en) * | 2015-12-25 | 2016-04-06 | 广东威林工程塑料有限公司 | Short-fiber-reinforced heat-conducting electric-insulating nylon 46 composite material and preparation method thereof |
| CN106084761A (en) * | 2016-07-11 | 2016-11-09 | 铜陵日兴电子有限公司 | A kind of LED alumina silicate fibre nylon heat-conductive composite material and preparation method thereof |
| CN106046769A (en) * | 2016-07-11 | 2016-10-26 | 铜陵日兴电子有限公司 | Carbon nanosphere particle-nylon heat-conductive composite material for LED lamp and preparation method of material |
| CN107033587A (en) * | 2017-03-06 | 2017-08-11 | 苏州隆芝耀新材料有限公司 | A kind of Heat conduction nylon composite material and preparation method thereof |
| CN107760019A (en) * | 2017-11-06 | 2018-03-06 | 大连理工高邮研究院有限公司 | A kind of novel heat-conducting nylon composite materials and preparation method thereof |
| CN109796757A (en) * | 2019-01-16 | 2019-05-24 | 上海塑锐达复合材料有限公司 | A kind of wear-resisting and waterproof solution PA66 material and preparation method thereof |
| CN110791085B (en) * | 2019-10-18 | 2022-05-20 | 广东轻工职业技术学院 | High weld mark strength glass fiber reinforced polyamide composite material and preparation method thereof |
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| EP1882719B1 (en) * | 2006-07-11 | 2017-04-19 | Ems-Chemie Ag | Polyamide moulding composition and use thereof |
| CN102719099B (en) * | 2012-06-08 | 2014-08-20 | 金发科技股份有限公司 | Thermal conductive molding compound and preparation method thereof |
| CN102796369B (en) * | 2012-07-25 | 2014-12-31 | 上海耐特复合材料制品有限公司 | Heat conduction polyimide composite material, preparation method and application thereof |
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