CN104672770A - Heat-resistant carbon fiber-reinforced polyformaldehyde composite material and preparation method thereof - Google Patents
Heat-resistant carbon fiber-reinforced polyformaldehyde composite material and preparation method thereof Download PDFInfo
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- CN104672770A CN104672770A CN201510062922.XA CN201510062922A CN104672770A CN 104672770 A CN104672770 A CN 104672770A CN 201510062922 A CN201510062922 A CN 201510062922A CN 104672770 A CN104672770 A CN 104672770A
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Abstract
The invention discloses a heat-resistant carbon fiber-reinforced polyformaldehyde composite material and a preparation method thereof. The heat-resistant carbon fiber-reinforced polyformaldehyde composite material is characterized by being prepared from the following raw materials: 90-100 parts of polyformaldehyde, 10-30 parts of a carbon fiber, 0.1-0.3 part of an antioxidant 1010, 2-4 parts of melamine, 0.3-0.5 part of ethylene bis oleamide, 5-8 parts of nano mica powder, 0.5-1 part of a silane coupling agent KH-570, 2-4 parts of graphene oxide and 2-3 parts of nanosilicon dioxide. The added nanoscale mica is coupled by virtue of the silane coupling agent KH-570; the compatibility with polyformaldehyde matrix is enhanced; the added carbon fiber is dispersed evenly in polyformaldehyde after being preheated; the comprehensive property, especially the heat resistance of the composite material is improved; and the heat-resistant carbon fiber-reinforced polyformaldehyde composite material is simple in technology, convenient to operate, excellent in heat-resistant effect, high in cost performance and suitable for popularization and application.
Description
Technical field
the present invention relates to a kind of heat resistant type fibre reinforced polyformaldehyde composite material and preparation method thereof, belong to technical field of plastic production.
Background technology
Polyoxymethylene is as one of engineering plastics, it is the linear polymer of a kind of high-density, high crystallization, there is higher strength and modulus, well wear-resistant, resistance to chemical attack, resistance to creep, fatigue performance, and the feature such as product size good stability, be replace the more satisfactory material of copper, zinc, aluminium and alloy product, be widely used in the fields such as automobile making, electric, mechanical, chemical industry.China's existing polyoxymethylene product is mostly universal, in order to improve the use of product at aerospace field, must shift to high-end modified polyacetal, the form of general employing matrix material carries out modification, this material modifiedly must have outstanding over-all properties, could for the preparation of mechanical component and the structure unit requiring to have the performance such as high-strength, Gao Mo, thermal stability are good, dimensional stabilizing, precision are high.
Existing much research adopts glass fiber reinforced acetal to prepare polyformaldehyde composite material more, and using carbon fiber as reinforcement, the rare report of research of the polyformaldehyde composite materials such as preparation high strength, high-modulus, height are heat-resisting.Carbon fiber, as a kind of new carbon, has that tensile strength is large, modulus is high, antifatigue, the performance that wear-resistant, corrosion-resistant, self lubricity, density are low, high temperature resistant, low temperature resistant, linear expansivity is little, conduction, heat conduction etc. are excellent.Carbon fiber, as reinforcement, can improve the mechanical property of material greatly, improves thermostability, frictional behaviour, raising rigidity, contributes to reducing molding shrinkage, ensureing dimensional precision.Polyoxymethylene after processing phase goods easily ftracture, the problem such as distortion, greatly affect job efficiency, waste resource, increases cost.
Summary of the invention
The object of this invention is to provide a kind of heat resistant type fibre reinforced polyformaldehyde composite material and preparation method thereof, technological design is reasonable, simple to operate, solves with problems such as craze and transfigurations in matrix material post production process, increases product qualified rate, reduces costs.
In order to realize object of the present invention, the present invention is by following scheme implementation:
A kind of heat resistant type fibre reinforced polyformaldehyde composite material and preparation method thereof, is made up of the raw material of following weight part: the two amine hydroxybenzene 0.3-0.5 of polyoxymethylene 90-100, carbon fiber 10-30, antioxidant 1010 0.1-0.3, trimeric cyanamide 2-4, ethylene, nano mica powder 5-8, Silane coupling reagent KH-570 0.5-1, graphene oxide 2-4, nano silicon 2-3;
A kind of heat resistant type fibre reinforced polyformaldehyde composite material of the present invention and preparation method thereof, be made up of following concrete steps:
(1) polyoxymethylene, the two amine hydroxybenzene of ethylene and antioxidant 1010 mixing be added in homogenizer stir, and in vacuum drying oven under 70-80 ° of C dry 2-3h for subsequent use;
(2) nano silicon is for subsequent use after vacuum sintering 2-3 hour under 400-450 ° of C, graphene oxide is added in dehydrated alcohol, ultrasonic 5-10 minute under 90W, add nano mica powder again and continue dispersion 20-30 minute, filter, precipitation use distilled water flushing post-drying, and and carbon fiber evenly, then carries out shortly cutting by Silane coupling reagent KH-570, nano silicon mixed grinding for subsequent use, after thermal pretreatment and above-mentioned mixture mixing and stirring for subsequent use;
(3) the polyoxymethylene batch mixing of step (1) and all the other surplus materialss are added to the main feeding trough of twin screw extruder, again the mixture of step (2) is added at natural venting port, setting processing parameter carries out extruding, tie rod, cooling, granulation, then the 70-80 ° of dry 2-3 hour of C in vacuum drying oven;
(4) the fibre reinforced polyformaldehyde composite material that step (3) obtains is heated to 150-180 ° of C, be added to again in injection moulding machine after rapid cooling, injection temperature is 180-190 ° of C, injection pressure is 50-60MPa, injection speed is 55-60mm/s, soaking time is 15-20s, and die temperature is 70-80 ° of C, can obtain the parts of different shape.
The processing parameter extruded of the present invention is: extruder barrel temperature is 170-190 ° of C, and screw speed is 50-120r/min.
Advantage of the present invention is: the nano level mica that the present invention adds uses Silane coupling reagent KH-570 to carry out coupled, enhance the consistency with polyoxymethylene matrix, the carbon fiber added is uniformly dispersed after thermal pretreatment in polyoxymethylene, and improve the over-all properties of matrix material, especially thermotolerance, technique of the present invention is simple, easy to operate, heat-resisting effect is excellent, and cost performance is high, is applicable to promoting the use of.
specific embodiments
Below by specific examples, the present invention is described in detail.
A kind of heat resistant type fibre reinforced polyformaldehyde composite material and preparation method thereof, is made up of the raw material of following weight part (kilogram): polyoxymethylene 100, carbon fiber 25, antioxidant 1010 0.3, trimeric cyanamide 3, ethylene two amine hydroxybenzene 0.4, nano mica powder 7, Silane coupling reagent KH-570 0.5, graphene oxide 4, nano silicon 3;
A kind of heat resistant type fibre reinforced polyformaldehyde composite material of the present invention and preparation method thereof, be made up of following concrete steps:
(1) polyoxymethylene, the two amine hydroxybenzene of ethylene and antioxidant 1010 mixing be added in homogenizer stir, and in vacuum drying oven under 80 ° of C dry 2h for subsequent use;
(2) by for subsequent use after 2 hours for nano silicon vacuum sintering under 430 ° of C, graphene oxide is added in dehydrated alcohol, under 90W ultrasonic 8 minutes, add nano mica powder again and continue dispersion 30 minutes, filter, precipitation use distilled water flushing post-drying, and and carbon fiber evenly, then carries out shortly cutting by Silane coupling reagent KH-570, nano silicon mixed grinding for subsequent use, after thermal pretreatment and above-mentioned mixture mixing and stirring for subsequent use;
(3) the polyoxymethylene batch mixing of step (1) and all the other surplus materialss are added to the main feeding trough of twin screw extruder, again the mixture of step (2) is added at natural venting port, setting processing parameter carries out extruding, tie rod, cooling, granulation, then dry 3 hours of 80 ° of C in vacuum drying oven;
(4) the fibre reinforced polyformaldehyde composite material that step (3) obtains is heated to 180 ° of C, be added to again in injection moulding machine after rapid cooling, injection temperature is 190 ° of C, injection pressure is 60MPa, injection speed is 60mm/s, soaking time is 20s, and die temperature is 80 ° of C, can obtain the parts of different shape.
The processing parameter extruded of the present invention is: extruder barrel temperature is 190 ° of C, and screw speed is 80r/min.
In embodiment, the performance perameter of Carbon fibe enhancing acetal plastic is as follows:
Young's modulus (GPa): 18.6;
Tensile strength (MPa): 150;
Flexural strength (MPa): 189;
Elongation at break (%): 0.73;
Notched Izod impact strength (kJ/m-2): 14.6;
Heat-drawn wire (° C): 160.4.
Claims (3)
1. heat resistant type fibre reinforced polyformaldehyde composite material and preparation method thereof, it is characterized in that, be made up of the raw material of following weight part: the two amine hydroxybenzene 0.3-0.5 of polyoxymethylene 90-100, carbon fiber 10-30, antioxidant 1010 0.1-0.3, trimeric cyanamide 2-4, ethylene, nano mica powder 5-8, Silane coupling reagent KH-570 0.5-1, graphene oxide 2-4, nano silicon 2-3.
2. a kind of heat resistant type fibre reinforced polyformaldehyde composite material and preparation method thereof according to claim 1, is characterized in that, be made up of following concrete steps:
(1) polyoxymethylene, the two amine hydroxybenzene of ethylene and antioxidant 1010 mixing be added in homogenizer stir, and in vacuum drying oven under 70-80 ° of C dry 2-3h for subsequent use;
(2) nano silicon is for subsequent use after vacuum sintering 2-3 hour under 400-450 ° of C, graphene oxide is added in dehydrated alcohol, ultrasonic 5-10 minute under 90W, add nano mica powder again and continue dispersion 20-30 minute, filter, precipitation use distilled water flushing post-drying, and and carbon fiber evenly, then carries out shortly cutting by Silane coupling reagent KH-570, nano silicon mixed grinding for subsequent use, after thermal pretreatment and above-mentioned mixture mixing and stirring for subsequent use;
(3) the polyoxymethylene batch mixing of step (1) and all the other surplus materialss are added to the main feeding trough of twin screw extruder, again the mixture of step (2) is added at natural venting port, setting processing parameter carries out extruding, tie rod, cooling, granulation, then the 70-80 ° of dry 2-3 hour of C in vacuum drying oven;
(4) the fibre reinforced polyformaldehyde composite material that step (3) obtains is heated to 150-180 ° of C, be added to again in injection moulding machine after rapid cooling, injection temperature is 180-190 ° of C, injection pressure is 50-60MPa, injection speed is 55-60mm/s, soaking time is 15-20s, and die temperature is 70-80 ° of C, can obtain the parts of different shape.
3. a kind of heat resistant type fibre reinforced polyformaldehyde composite material according to claim 2 and preparation method thereof, it is characterized in that, the processing parameter extruded is: extruder barrel temperature is 170-190 ° of C, and screw speed is 50-120r/min.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108724399A (en) * | 2018-04-25 | 2018-11-02 | 阜南县大喜柳编工艺品有限公司 | A kind of rattan braided article that surface is ageing-resistant |
| CN109097854A (en) * | 2018-08-14 | 2018-12-28 | 安徽和邦纺织科技有限公司 | A kind of preparation method by polyamide modified polyester fiber |
| CN115850905A (en) * | 2022-12-23 | 2023-03-28 | 重庆云天化天聚新材料有限公司 | Carbon fiber reinforced conductive polyformaldehyde composite material and preparation method thereof |
| CN116121906A (en) * | 2023-02-20 | 2023-05-16 | 凯盛家纺股份有限公司 | Preparation method of cool polyethylene composite functional fiber |
| CN117186623A (en) * | 2023-09-11 | 2023-12-08 | 昆山红苹果塑胶新材料有限公司 | Heat-resistant stable TPU film and preparation method thereof |
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| CN1605456A (en) * | 2003-10-10 | 2005-04-13 | 上海杰事杰新材料股份有限公司 | Continuous fiber reinforced polyformaldehyde material |
| CN103144275A (en) * | 2013-02-22 | 2013-06-12 | 神华集团有限责任公司 | Stabilizing treatment method for polyformaldehyde |
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| CN1605456A (en) * | 2003-10-10 | 2005-04-13 | 上海杰事杰新材料股份有限公司 | Continuous fiber reinforced polyformaldehyde material |
| CN103144275A (en) * | 2013-02-22 | 2013-06-12 | 神华集团有限责任公司 | Stabilizing treatment method for polyformaldehyde |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108724399A (en) * | 2018-04-25 | 2018-11-02 | 阜南县大喜柳编工艺品有限公司 | A kind of rattan braided article that surface is ageing-resistant |
| CN109097854A (en) * | 2018-08-14 | 2018-12-28 | 安徽和邦纺织科技有限公司 | A kind of preparation method by polyamide modified polyester fiber |
| CN115850905A (en) * | 2022-12-23 | 2023-03-28 | 重庆云天化天聚新材料有限公司 | Carbon fiber reinforced conductive polyformaldehyde composite material and preparation method thereof |
| CN116121906A (en) * | 2023-02-20 | 2023-05-16 | 凯盛家纺股份有限公司 | Preparation method of cool polyethylene composite functional fiber |
| CN117186623A (en) * | 2023-09-11 | 2023-12-08 | 昆山红苹果塑胶新材料有限公司 | Heat-resistant stable TPU film and preparation method thereof |
| CN117186623B (en) * | 2023-09-11 | 2024-02-13 | 昆山红苹果塑胶新材料有限公司 | Heat-resistant stable TPU film and preparation method thereof |
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Application publication date: 20150603 |