CN101792604A - Self-lubricating abrasion-resistant injection-class graphite-filled nylon 66 and preparation technique thereof - Google Patents
Self-lubricating abrasion-resistant injection-class graphite-filled nylon 66 and preparation technique thereof Download PDFInfo
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- CN101792604A CN101792604A CN200910233116A CN200910233116A CN101792604A CN 101792604 A CN101792604 A CN 101792604A CN 200910233116 A CN200910233116 A CN 200910233116A CN 200910233116 A CN200910233116 A CN 200910233116A CN 101792604 A CN101792604 A CN 101792604A
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Abstract
The invention relates to an organic high-polymer composite material, in particular to a self-lubricating abrasion-resistant injection-class graphite-filled nylon 66 and a preparation technique thereof. The nylon 66 consists of the following components in proportion by weight: 49.5 percent to 90 percent of nylon 66; 1 percent to 35 percent of graphite powder; 0.3 percent to 1.5 percent of antioxidant; 0.1 percent to 3.0 percent of heat stabilizer; 0.1 percent to 2.8 percent of coupling agent; 0.1 percent to 3.0 percent of high-molecular weight silicon oil; and 0.3 percent to 5.5 percent of other additives. The nylon 66 is environment-friendly and halogen-free; on the basis of maintaining the comprehensive performance of the prior filled nylon 66, the nylon 66 also has good self-lubricity and abrasion resistance; meanwhile, a product can be automatically demoulded in the process of injection moulding or extrusion, and release agent does not need to be used; domestic materials and production equipment are adopted, consequently, the production cost and the material cost are greatly reduced, and thereby the comprehensive competitiveness of the product is effectively enhanced.
Description
Technical field
The present invention relates to a kind of organic polymer composite, more particularly, relate to a kind of self-lubricating abrasion-resistant injection-class graphite-filled nylon dragon 66 and preparation method thereof.
Background technology
Nylon 66 is to use one of maximum several engineering plastics at present, be widely used in the component of making various machineries, automobile, chemical industry, electronics and electrical means, his fusing point is higher, have good physical and mechanical property and wear resistance and self lubricity, be particularly suitable for high strength or wear-resisting product, these comprehensive characteristics are that other plastics are not available.But social technology develop rapidly at present, make rapid progress, the product innovation new invention pours out, relate to requirement for picture and can effectively significantly reduce frictional coefficient, the stronger component of while starting material self wear resistance, the plurality of advantages of common nylon 66 allows the designer favor very much, but but above-mentioned shortcoming allows people's headache very much.The starting material that provided in the market with above-mentioned functions, or nylon 12 these classes are expensive, or add the additive material of the such costliness of tetrafluoroethylene, cause material cost high equally, like this, also require relative starting material of starting material and production cost lower.Therefore, launched nylon 66 is carried out composite modified research.And Europe/Japan or the like 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 material Halogen requirement of electric equipment products, 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 starting material demouldings easily itself, do not need to use releasing agent, the present technique invention produces in order to solve above-mentioned technical barrier.
Summary of the invention
The objective of the invention is to effectively overcome the defective of prior art, self-lubricating abrasion-resistant injection-class graphite-filled nylon dragon 66 raw materials that a kind of environmental protection are provided and have good self lubricity and wear resistance.
Technical scheme provided by the invention is as follows: a kind of self-lubricating abrasion-resistant injection-class graphite-filled nylon dragon 66 of the present invention, form nylon 66:49.5-90%, Graphite Powder 99: 1-35% by weight by following composition; Antioxidant: 0.3-1.5%; Thermo-stabilizer: 0.1-3.0%; Coupling agent: 0.1-2.8%; High molecular silicone oil: 0.1-3.0%; Other auxiliary agents: 0.3-5.5%.
Self-lubricating abrasion-resistant injection-class graphite-filled nylon dragon of the present invention 66 Production Flow Charts are: earlier the 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, mixed in mixer 10 minutes with high molecular silicone oil nylon 66 oven dry backs, then with antioxidant, thermo-stabilizer and other auxiliary agents proportionally after the weighing in mixer low speed mixing 10 minutes, vacuumize at the uniform velocity mixing extruding through the parallel parallel dual-screw extruding machine of cord wood under the screw combinations situation that medium tenacity is sheared again, the pelletizing of water-cooled tie rod makes self-lubricating abrasion-resistant injection-class graphite-filled nylon dragon 66 materials through screening and dewatering.
The present invention has effectively overcome the defective of prior art, has the following advantages:
A kind of self-lubricating abrasion-resistant injection-class graphite-filled nylon dragon 66 of the present invention and manufacture craft thereof, environment friendly non-halogen, on the basis of the over-all properties that keeps original filled nylon-6 6, also possess self lubricity and wear resistance are preferably arranged, simultaneously in injection moulding or the demoulding voluntarily when extruding finished product, do not need to use releasing agent, raw and auxiliary material and production unit all adopt homemade, 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 abrasion-resistant injection-class graphite-filled nylon dragon 66 raw materials of the present invention, therefore do not limit protection scope of the present invention.
Embodiment one, and a kind of self-lubricating abrasion-resistant injection-class graphite-filled nylon dragon 66 is provided, and forms nylon 66:69.4% by weight by following composition; High molecular silicone oil: 2.4%; The electrically conductive graphite powder: 25%, antioxidant: 1.0%; Thermo-stabilizer: 1.2%; Silane coupling agent: 0.5%; Other auxiliary agents: 0.5%;
Earlier 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 silane coupling agent, the 85 degree oven dry of nylon 66 usefulness mixed in mixer 10 minutes with high molecular silicone oil after three hours, then with antioxidant, thermo-stabilizer, 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 even substantially, 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-cooled tie rod pelletizing mode, promptly make self-lubricating abrasion-resistant injection-class graphite-filled nylon dragon 66 materials through screening and dewatering.
Claims (2)
1. a self-lubricating abrasion-resistant injection-class graphite-filled nylon dragon 66 is characterized in that: form nylon 66:49.5-90%, Graphite Powder 99: 1-35% by weight by following composition; Antioxidant: 0.3-1.5%; Thermo-stabilizer: 0.1-3.0%; Coupling agent: 0.1-2.8%; High molecular silicone oil: 0.1-3.0%; Other auxiliary agents: 0.3-5.5%.
2. method for preparing self-lubricating abrasion-resistant injection-class graphite-filled nylon dragon 66, it is characterized in that: comprise the steps: earlier the graphite powder to be placed 6 hours after mixing ten minutes under the 50 degree left and right sides conditions in proportion more naturally with coupling agent, mixed in mixer 10 minutes with high molecular silicone oil nylon 66 oven dry backs, then with antioxidant, thermo-stabilizer and other auxiliary agents proportionally after the weighing in mixer low speed mixing 10 minutes, vacuumize at the uniform velocity mixing extruding through the parallel parallel dual-screw extruding machine of cord wood under the screw combinations situation that medium tenacity is sheared again, the pelletizing of water-cooled tie rod makes self-lubricating abrasion-resistant injection-class graphite-filled nylon dragon 66 materials through screening and dewatering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910233116A CN101792604A (en) | 2009-11-26 | 2009-11-26 | Self-lubricating abrasion-resistant injection-class graphite-filled nylon 66 and preparation technique thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910233116A CN101792604A (en) | 2009-11-26 | 2009-11-26 | Self-lubricating abrasion-resistant injection-class graphite-filled nylon 66 and preparation technique thereof |
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| Publication Number | Publication Date |
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| CN101792604A true CN101792604A (en) | 2010-08-04 |
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| CN200910233116A Pending CN101792604A (en) | 2009-11-26 | 2009-11-26 | Self-lubricating abrasion-resistant injection-class graphite-filled nylon 66 and preparation technique thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102898827A (en) * | 2012-11-05 | 2013-01-30 | 科创聚合物(苏州)有限公司 | Self-lubricating abrasion-resistant injection-molding grade nylon 66 and preparation technology thereof |
| CN105647172A (en) * | 2016-04-05 | 2016-06-08 | 中北大学 | Wear-resistant long basalt fiber-reinforced PA6 composite material and preparation method thereof |
| 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 |
-
2009
- 2009-11-26 CN CN200910233116A patent/CN101792604A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102898827A (en) * | 2012-11-05 | 2013-01-30 | 科创聚合物(苏州)有限公司 | Self-lubricating abrasion-resistant injection-molding grade nylon 66 and preparation technology thereof |
| CN105647172A (en) * | 2016-04-05 | 2016-06-08 | 中北大学 | Wear-resistant long basalt fiber-reinforced PA6 composite material and preparation method thereof |
| CN105647172B (en) * | 2016-04-05 | 2018-02-09 | 中北大学 | A kind of wear-resisting long basalt fibre enhancing PA6 composites and preparation method thereof |
| 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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Open date: 20100804 |