CN104419193A - PPO/PA6 alloy material used for electrostatic coating and preparation method thereof - Google Patents
PPO/PA6 alloy material used for electrostatic coating and preparation method thereof Download PDFInfo
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- CN104419193A CN104419193A CN201310367459.0A CN201310367459A CN104419193A CN 104419193 A CN104419193 A CN 104419193A CN 201310367459 A CN201310367459 A CN 201310367459A CN 104419193 A CN104419193 A CN 104419193A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids
Abstract
The invention relates to a conductive PPO/PA6 alloy material with high temperature resistance used for electrostatic coating and a preparation method thereof. The material is the high-temperature resistance conductive fiber-modified PPO/PA6 alloy material. Innovation of the preparation technology of alloy material embody that a chemical dipping method is used for coating a layer nickel-doped alumina on the surface of silicon oxide fiber to prepare the high-temperature resistance conductive fiber, supercritical CO2 is employed as a carrier for uniformly grafting an aluminic acid ester coupling agent on the high-temperature resistance conductive fiber surface, then blending extrusion is carried out with a PPO/PA6 alloy formula system through a double screw extruder, and steps of drawing bars, cooling and granulating can be carried out to obtain the modified PPO/PA6 alloy. In the automobile industry on-line spraying technology, compared with a traditional PPO/PA6, the modified PPO/PA6 alloy material has conductivity and high heat resistance performance, the electrostatic coating process can be directly carried out without a conductive priming paint, the product enables party-line production with metal parts, so that production cost and energy consumption can be reduced.
Description
Technical field
The present invention relates to polymeric material field, be specifically related to one and can be used for electrostatic spraying, high temperature resistant conduction PPO/PA6 alloy material and preparation method, be applied in automobile industry and can carry out the body panels PPO/PA6 alloy material of on-line spray, as the parts such as mud guard, beater or beat-up with body in white simultaneously.
Background technology
In automobile production process, body spray cost accounts for vehicle body cost and is about 50%, therefore, body panels and body in white carry out on-line spray simultaneously, can paint this by saving spray in a large number, but adopt on-line spray technique, PPO/PA6 alloy material needs the storing temperature of resistance to electrophoresis (200 ~ 210 DEG C) on the one hand; PPO/PA6 alloy need possess the conducting function needed for electrophoresis on the other hand, traditional PPO/PA6 alloy material can not take into account electroconductibility and thermotolerance simultaneously, and the high temperature resistant conduction PPO/PA6 alloy material adopting the present invention to obtain can overcome above-mentioned shortcoming, shaped piece prepared by this material directly can carry out electrostatic spraying without the need to spraying conductive primer in advance, same production line can metallize parts also can painted plastic parts, decrease cost and energy consumption, and the heterochromia because different complete processing causes can be avoided.
Summary of the invention
The present invention has prepared one directly can carry out electrostatic spraying operation, the PPO/PA6 alloy material of high temperature resistant conduction, shaped piece prepared by this material is when for automobile industry on-line spray technique, can spraying collinear with metal shaped piece, first method of chemical immersion is adopted to prepare high temperature resistant conductive fibre at silicon oxide fibre surface-coated one deck nickel doped aluminium, twin screw extruder blending extrusion is passed through with PPO/PA6 alloy formula system in surface after coupling agent treatment, obtains MODIFIED PP O/PA alloy material after check rod, cooling, pelletizing.This alloy material not only has good mechanical property, and has good electroconductibility, oxidation-resistance, high temperature resistant.
technical scheme:
Step one: at 25 ~ 70 DEG C, normal pressure, under the condition of high-speed stirring 24h, adopt method of chemical immersion at the precursor of silicon oxide fibre surface-coated one deck nickel doped aluminium, then heat-treat, temperature range is 450 ~ 1000 DEG C, prepares the nickel doped aluminium/silicon oxide fibre of high temperature resistant conduction;
Step 2: at 70 ~ 100 DEG C, under the condition of 25 MPa, at supercritical CO
2by the surface of aluminate coupling agent uniform graft at silicon oxide fibre in reactor;
Step 3: mix after each component drying in above-mentioned formula in high-speed mixer by proportioning, the material of mixing is joined in twin screw extruder and melt extrudes; Extrusion temperature scope is 250 ~ 270 DEG C; Engine speed is 300 ~ 600rpm; Feeding rotating speed is 20 ~ 45 rpm; The mixture extruded is dried after water-cooled, granulation in vacuum drying oven, then the blend be baked is injection molded into standard bar at 250 ~ 270 DEG C.
specific examples:
Below in conjunction with specific embodiment, the present invention is described in more detail, but the present invention is not limited to each example of following enforcement:
Present embodiment is use section doubly grand twin screw extruder and extra large sky injection moulding machine all, main raw material Nylon 6, limiting viscosity 2.48dL/g; Polyphenylene oxide resin, limiting viscosity is 0.50 dL/g; Expanding material uses Maleated SEBS; Toughner uses SBS; Fiberfill fibers uses homemade high temperature resistant conductive fibre; Oxidation inhibitor comprises 1010,168(Li Anlong); Twin-screw extruder barrel temperature one district temperature: 230 ~ 240 DEG C, two district's temperature: 240 ~ 250 DEG C, three district's temperature: 250 ~ 260 DEG C, four district's temperature: 250 ~ 260 DEG C, five district's temperature: 240 ~ 250 DEG C, six district's temperature: 230 ~ 240 DEG C, pressure is 10 ~ 15MPa, screw slenderness ratio is 35 ~ 40, engine speed 400 ~ 600r/min.Each component is mixed by proportioning and is placed in twin screw extruder, through melting mixing extruding pelletization.Gained pellet, again through 120 DEG C of forced air drying 8 ~ 10h, injection moulding machine is injection molded into the performance test batten of standard, and injection temperature is 250 ~ 270 DEG C.After sample is shaping temperature be (23 ± 2 DEG C), humidity be in the environment of (50 ± 5) % place (24 ± 1) h.
Each embodiment physicals is all tested by following standard, and concrete examination criteria is as follows:
Tensile strength GB/T1040-1992
Flexural strength GB/T9341-2000
Modulus in flexure GB/T9341-2000
Simply supported beam notched Izod impact strength GB/T1043-1993
Heat-drawn wire ASTM D648(0.45MPa)
Volume specific resistance IEC 60093
The formula that each embodiment of table 1 is corresponding
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | |
| Raw material | Consumption (part) | Consumption (part) | Consumption (part) | Consumption (part) |
| PPO | 25 | 30 | 35 | 40 |
| PA6 | 60 | 50 | 40 | 30 |
| Expanding material | 0.3 | 0.3 | 0.3 | 0.3 |
| Toughner | 4 | 4 | 4 | 4 |
| Self-control fiber | 10 | 15 | 20 | 25 |
| 1010 | 0.2 | 0.2 | 0.2 | 0.2 |
| 168 | 0.4 | 0.4 | 0.4 | 0.4 |
The physicals that table 2 each embodiment sample is corresponding
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | |
| Shock strength KJ/m 2 | 6.27 | 8.02 | 7.68 | 6.15 |
| Tensile strength MPa | 103.58 | 124.18 | 122.69 | 94.35 |
| Flexural strength MPa | 139.26 | 191.22 | 172.78 | 141.56 |
| Modulus in flexure MPa | 4160 | 4879 | 4690 | 4250 |
| Heat-drawn wire DEG C | 202 | 215 | 221 | 203 |
| Volume specific resistance Ω cm | 0.68×10 －3 | 1.3×10 －3 | 0.77×10 －3 | 0.83×10 －3 |
As known from Table 2, MODIFIED PP O/PA6 alloy material has higher heat-drawn wire, and its volume specific resistance is all 10
-3the Ω cm order of magnitude, shows that this material has conducting function.MODIFIED PP O/PA6 alloy material prepared by the present invention not only has good mechanical property, and there is good electroconductibility, oxidation-resistance, high temperature resistant, automotive body panels and body in white while during on-line spray, shaped piece prepared by this MODIFIED PP O/PA6 alloy material can take into account electroconductibility and thermotolerance simultaneously, greatly reduces production cost and energy consumption.
Claims (3)
1. the formula of this PPO/PA6 alloy material composed as follows shown in:
High temperature resistant conductive fibre 10 ~ 25%
PA6 30～60%
PPO 25～40%
Toughner 2 ~ 5%
Expanding material 0.2 ~ 0.4%
Auxiliary agent 0.1 ~ 1%.
2. PPO/PA6 alloy material according to claim 1, it is characterized in that: described high temperature resistant conductive fibre length-to-diameter ratio is 24:1 ~ 28:1, adopt method of chemical immersion at silicon oxide fibre surface-coated one deck nickel doped aluminium precursor, then heat-treat, temperature is 450 ~ 1000 DEG C.
3. PPO/PA6 alloy material according to claim 1, is characterized in that: at supercritical CO
2environment in, aluminate coupling agent is grafted on silicon oxide fibre surface uniformly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310367459.0A CN104419193B (en) | 2013-08-22 | 2013-08-22 | PPO/PA6 alloy material used for electrostatic coating and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310367459.0A CN104419193B (en) | 2013-08-22 | 2013-08-22 | PPO/PA6 alloy material used for electrostatic coating and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN104419193A true CN104419193A (en) | 2015-03-18 |
| CN104419193B CN104419193B (en) | 2017-03-22 |
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| CN201310367459.0A Expired - Fee Related CN104419193B (en) | 2013-08-22 | 2013-08-22 | PPO/PA6 alloy material used for electrostatic coating and preparation method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101134841A (en) * | 2006-08-29 | 2008-03-05 | 广州金发科技股份有限公司 | Shockproof conductive polyphenyl ether polyamide compound and method for making same |
| CN101481833A (en) * | 2009-02-09 | 2009-07-15 | 桂林电子科技大学 | High temperature resistant conductive fibre and preparation thereof |
| CN103131082A (en) * | 2011-11-07 | 2013-06-05 | 黑龙江鑫达企业集团有限公司 | Polypropylene composite material special for new energy vehicle battery groove and preparation method thereof |
| CN103540125A (en) * | 2012-07-13 | 2014-01-29 | 黑龙江鑫达企业集团有限公司 | High-temperature-resistant conductive PPO/PA6 (Polyphenylene Oxide/Polyamide 6) alloy material and preparation method thereof |
-
2013
- 2013-08-22 CN CN201310367459.0A patent/CN104419193B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101134841A (en) * | 2006-08-29 | 2008-03-05 | 广州金发科技股份有限公司 | Shockproof conductive polyphenyl ether polyamide compound and method for making same |
| CN101481833A (en) * | 2009-02-09 | 2009-07-15 | 桂林电子科技大学 | High temperature resistant conductive fibre and preparation thereof |
| CN103131082A (en) * | 2011-11-07 | 2013-06-05 | 黑龙江鑫达企业集团有限公司 | Polypropylene composite material special for new energy vehicle battery groove and preparation method thereof |
| CN103540125A (en) * | 2012-07-13 | 2014-01-29 | 黑龙江鑫达企业集团有限公司 | High-temperature-resistant conductive PPO/PA6 (Polyphenylene Oxide/Polyamide 6) alloy material and preparation method thereof |
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| CN104419193B (en) | 2017-03-22 |
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Granted publication date: 20170322 Termination date: 20180822 |