CN102898821A - Injection molding grade graphite-filled high-temperature nylon and production process thereof - Google Patents
Injection molding grade graphite-filled high-temperature nylon and production process thereof Download PDFInfo
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- CN102898821A CN102898821A CN2012104384389A CN201210438438A CN102898821A CN 102898821 A CN102898821 A CN 102898821A CN 2012104384389 A CN2012104384389 A CN 2012104384389A CN 201210438438 A CN201210438438 A CN 201210438438A CN 102898821 A CN102898821 A CN 102898821A
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- temperature nylon
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Abstract
The invention relates to an organic polymer composite material, in particular to injection molding grade graphite-filled high-temperature nylon and a production process thereof. The injecting molding grade graphite-filled high-temperature nylon consists of the following compositions in percentage by weight: 68 to 97 percent of high-temperature nylon, 0.1 to 2.5 percent of high molecular weight silicone oil, 3 to 35 percent of conductive graphite powder, 0.3 to 1.5 percent of the antioxidant, 0.1 to 2.0 percent of coupling agent and 0.3 to 5.5 percent of other aids. The injection molding grade graphite-filled high-temperature nylon preserves the comprehensive performances of the original high-temperature nylon and has a good self-lubricating property and good abrasion resistance, automatic demolding is realized during injection molding or extrusion of a finished product, and release agent is not required, the procurement and the production of raw materials are convenient, raw and auxiliary materials and production equipment are made in China, and the costs of production and raw materials are greatly reduced, so that the comprehensive competitiveness of the product is improved.
Description
Technical field
The present invention relates to a kind of organic polymer composite, more particularly, relate to a kind of injection-class graphite-filled high-temperature nylon and manufacture craft thereof.
Background technology
At present, application with the alternative natural materials of plastics constantly enlarges in the world, scientist all over the world actively seeks new high-performance thermoplastics and comes alternative metals and timber by various tests, and this also becomes enterprise and strives for more families and the important component part of extending volume growth.
It is possible that the development of high temperature resistant nylon changes into the more microminiaturized lightweight of industrial or agricultural and civilian installation and powerful.High temperature resistant nylon can bring higher heat resistance for some parts, or simply having substituted raw material metal produces these parts.The device of novel appts and assembly equally also useful high temperature resistant nylon replace the trend of metal and thermosetting material.These all will strengthen the demand to the high temperature resistant nylon material, thereby drive the market requirement.
These high temperature resistant nylon materials can anti-180 ℃ continuous high temperature, and can also keep good dimensional stability.Have excellent long-term and short term thermal performance, can tolerate the high temperature that infrared (IR) reflow ovens of using in the pb-free solder process produces, and under wet environment, provide identical intensity, the chemical resistant properties of brilliance.But, the develop rapidly of present society technology, it is different to say crescent, the product innovation new invention pours out, relate to requirement for picture and can effectively significantly reduce frictional coefficient, stronger component of starting material self wear resistance simultaneously, the plurality of advantages of common high-temperature nylon allows the designer favor very much, but but the shortcoming of self wear resistance deficiency allows people's headache very much.Also require the relative starting material of starting material and production cost lower.The larger range of application that limits high-temperature nylon of this shortcoming.And Europe/Japan etc. developed country has started all restrictions of foreign imported product for various reasons at present, has set up a series of barrier, wherein to the Halogen-free requirement of material, is exactly one of them.Simultaneously, owing to contain many cyclophanes cyanogen in the more releasing agent, this also is the composition of strict restriction in present many environmental requirements, in order to ensure safety, the most direct way is exactly the easily demouldings of starting material itself, does not need to use releasing agent, and these the problem to be solved in the present invention just.
Series product of the present invention fully meet European Union's " waste and old electric electric installation " (WEEE) and " objectionable impurities limits the use of instruction " (RoHS) rules and other environmental regulations, can both use the Application Areas that environmental requirement is strict.
Summary of the invention
The object of the invention is to effectively overcome the defective of prior art, the self-lubricating wear-resisting injection graphite-filled high-temperature nylon raw material that a kind of environmental protection is provided and has good self lubricity and wear resistance.
Technical scheme provided by the invention is as follows: a kind of self-lubricating wear-resisting injection graphite-filled high-temperature nylon of the present invention is made of high-temperature nylon: 68-97% by weight following composition; High molecular silicone oil: 0.1-2.5%; Electrically conductive graphite powder: 3-35%, antioxidant: 0.3-1.5%; Coupling agent: 0.1-2.0%; Other auxiliary agents: 0.3-5.5%.
Self-lubricating wear-resisting injection graphite-filled high-temperature nylon Production Flow Chart of the present invention is: first the electrically conductive graphite powder was placed 6 hours after mixing ten minutes under the 50 degree left and right sides conditions in proportion more naturally with coupling agent, high-temperature nylon mixed in mixer 10 minutes with high molecular silicone oil, then with antioxidant and other auxiliary agents proportionally after the weighing in mixer low speed mixing 10 minutes, vacuumize at the uniform velocity mixing extrusion through cord wood parallel equidirectional two-screw forcing machine in the screw combinations situation that medium tenacity is sheared again, the water cooling bracing pelletizing makes the self-lubricating wear-resisting injection graphite-filled high-temperature nylon material through screening and dewatering.
The present invention has effectively overcome the defective of prior art, has the following advantages:
A kind of self-lubricating wear-resisting injection graphite-filled high-temperature nylon of the present invention and manufacture craft thereof, on the basis of the over-all properties that keeps original filled high-temperature nylon, also possess preferably self lubricity and wear resistance are arranged, simultaneously in injection moulding or the voluntarily demoulding when extruding finished product, do not need to use releasing agent, and the starting material production procurement is convenient, raw and auxiliary material and production unit all adopt domestic, production cost and material cost reduce greatly, the good like this synthesized competitiveness that improves product.
Embodiment
Below be the most preferred embodiment of self-lubricating wear-resisting injection graphite-filled high-temperature nylon raw material of the present invention, therefore do not limit protection scope of the present invention.
Embodiment one, and a kind of self-lubricating wear-resisting injection graphite-filled high-temperature nylon is provided, and is made of by weight high-temperature nylon following composition: 70.4%; High molecular silicone oil: 2.0%; The electrically conductive graphite powder: 25%, antioxidant: 1.0%; Silane coupling agent: 1.0%; Other auxiliary agents: 0.6%.
First the electrically conductive graphite powder was placed 6 hours after mixing ten minutes under the 50 degree left and right sides conditions in proportion more naturally with coupling agent, high-temperature nylon mixed in mixer 10 minutes with high molecular silicone oil, then with antioxidant, other auxiliary agents proportionally after the weighing in mixer low speed mixing 10 minutes, mixer adopts low speed mixing, paddle should with the barrel gap less than 0.5 centimetre, the supplementary material mixed effect should visual various particles and powder substantially even, do not have obvious agglomerate or gather; Twin screw extruder uses 40 length-to-diameter ratios, and medium tenacity is sheared, extracting vacuum, the screw rod slow speed of revolution that remains a constant speed; Adopt water cooling bracing pelletizing mode, namely make the self-lubricating wear-resisting injection graphite-filled high-temperature nylon material through screening and dewatering.
Claims (2)
1. an injection-class graphite-filled high-temperature nylon and manufacture craft thereof it is characterized in that being made of by weight high-temperature nylon following composition: 68-97%; High molecular silicone oil: 0.1-2.5%; Electrically conductive graphite powder: 3-35%, antioxidant: 0.3-1.5%; Coupling agent: 0.1-2.0%; Other auxiliary agents: 0.3-5.5%.
2. an injection-class graphite-filled high-temperature nylon and manufacture craft thereof, it is characterized in that comprising the steps: first the electrically conductive graphite powder being placed 6 hours after mixing ten minutes under the 50 degree left and right sides conditions in proportion more naturally with coupling agent, high-temperature nylon mixed in mixer 10 minutes with high molecular silicone oil, then with antioxidant and other auxiliary agents proportionally after the weighing in mixer low speed mixing 10 minutes, vacuumize at the uniform velocity mixing extrusion through cord wood parallel equidirectional two-screw forcing machine in the screw combinations situation that medium tenacity is sheared again, the water cooling bracing pelletizing makes the self-lubricating wear-resisting injection graphite-filled high-temperature nylon material through screening and dewatering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104384389A CN102898821A (en) | 2012-11-05 | 2012-11-05 | Injection molding grade graphite-filled high-temperature nylon and production process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104384389A CN102898821A (en) | 2012-11-05 | 2012-11-05 | Injection molding grade graphite-filled high-temperature nylon and production process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102898821A true CN102898821A (en) | 2013-01-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2012104384389A Pending CN102898821A (en) | 2012-11-05 | 2012-11-05 | Injection molding grade graphite-filled high-temperature nylon and production process thereof |
Country Status (1)
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| CN (1) | CN102898821A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109486184A (en) * | 2018-12-12 | 2019-03-19 | 苏州工业园区科创橡塑有限公司 | The high 66 material manufacture craft of lubricated nylon of low friction |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101717576A (en) * | 2009-11-26 | 2010-06-02 | 苏州市科创聚合物有限公司 | Self-lubricating wear-resisting injection graphite-filled high-temperature nylon and manufacturing process thereof |
-
2012
- 2012-11-05 CN CN2012104384389A patent/CN102898821A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101717576A (en) * | 2009-11-26 | 2010-06-02 | 苏州市科创聚合物有限公司 | Self-lubricating wear-resisting injection graphite-filled high-temperature nylon and manufacturing process thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109486184A (en) * | 2018-12-12 | 2019-03-19 | 苏州工业园区科创橡塑有限公司 | The high 66 material manufacture craft of lubricated nylon of low friction |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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Application publication date: 20130130 |