CN101792598A - Self-lubricating abrasion-resistant injection-class graphite-filled nylon 6 and preparation technique thereof - Google Patents
Self-lubricating abrasion-resistant injection-class graphite-filled nylon 6 and preparation technique thereof Download PDFInfo
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- CN101792598A CN101792598A CN200910233115A CN200910233115A CN101792598A CN 101792598 A CN101792598 A CN 101792598A CN 200910233115 A CN200910233115 A CN 200910233115A CN 200910233115 A CN200910233115 A CN 200910233115A CN 101792598 A CN101792598 A CN 101792598A
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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 6 and a preparation technique thereof. The nylon 6 consists of the following components in proportion by weight: 49.5 percent to 90 percent of nylon 6; 0.1 percent to 1.5 percent of external lubricant; 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 0.8 percent of coupling agent; and 0.3 percent to 5.5 percent of other additives. The nylon 6 is environment-friendly and halogen-free; on the basis of maintaining the comprehensive performance of the prior filled nylon 6, the nylon 6 also has good self-lubricity and abrasion resistance; moreover, the materials can be conveniently produced and purchased, 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 6 and preparation method thereof.
Background technology
Nylon 6 is to use one of maximum several engineering plastics at present, his amide group has polarity, in his structure, has well-set hydrogen bond, make that the fusing point of nylon 6 is higher, have good physical and mechanical property and wear resistance and self lubricity, these comprehensive characteristics are that other plastics are not available.But the water-absorbent of common nylon 6 is big, and shock strength is on the low side before the suction, and suction back rigidity declines to a great extent again, shortcoming such as size instability simultaneously, thus limited the application of nylon 6, and then dwindled downstream industry design engineer's selection leeway again.Therefore, launched nylon 6 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.Therefore cause the more export enterprise of China is seriously perplexed.Simultaneously,, when moulding, produce big internal stress easily, thereby cause the uncertainty of final product performance because nylon 6 is again the crystal type material.Simultaneously, relate to requirement and can effectively significantly reduce frictional coefficient for picture, stronger component of starting material self wear resistance simultaneously, the plurality of advantages of common nylon 6 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.The present technique invention produces in order effectively to overcome above-mentioned technological deficiency.
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 6 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 6 of the present invention, form nylon 6:49.5-90%, external lubricant: 0.1-1.5% by weight by following composition; Graphite Powder 99: 1-35%; Antioxidant: 0.3-1.5%; Thermo-stabilizer: 0.1-3.0%; Coupling agent: 0.1-0.8%; Other auxiliary agents: 0.3-5.5%.
Self-lubricating abrasion-resistant injection-class graphite-filled nylon dragon of the present invention 6 Production Flow Charts are: earlier nylon 6 oven dry backs were mixed 10 minutes with coupling agent, then with external lubricant, Graphite Powder 99, antioxidant, thermo-stabilizer, 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 6 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 6 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, also possess self lubricity and wear resistance are preferably arranged, and the starting material production procurement is convenient, raw and auxiliary material and production unit all adopt homemade, and 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 6 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 6 is provided, and forms nylon 6:71.4% by weight by following composition; External lubricant: 0.4%; Graphite Powder 99: 25%, antioxidant: 1.0%; Thermo-stabilizer: 1.2%; Coupling agent: 0.5%; Other auxiliary agents: 0.5%;
Earlier with the 85 degree oven dry of nylon 6 usefulness, mixed 10 minutes with coupling agent, then with antioxidant, external lubricant, Graphite Powder 99, 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 6 materials through screening and dewatering.
Claims (2)
1. a self-lubricating abrasion-resistant injection-class graphite-filled nylon dragon 6 is characterized in that: form nylon 6:49.5-90%, external lubricant: 0.1-1.5% by weight by following composition; Graphite Powder 99: 1-35%; Antioxidant: 0.3-1.5%; Thermo-stabilizer: 0.1-3.0%; Coupling agent: 0.1-0.8%; Other auxiliary agents: 0.3-5.5%.
2. method for preparing self-lubricating abrasion-resistant injection-class graphite-filled nylon dragon 6, it is characterized in that: comprise the steps: earlier nylon 6 oven dry backs to be mixed 10 minutes with coupling agent, then with external lubricant, Graphite Powder 99, antioxidant, thermo-stabilizer, 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 6 materials through screening and dewatering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910233115A CN101792598A (en) | 2009-11-26 | 2009-11-26 | Self-lubricating abrasion-resistant injection-class graphite-filled nylon 6 and preparation technique thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910233115A CN101792598A (en) | 2009-11-26 | 2009-11-26 | Self-lubricating abrasion-resistant injection-class graphite-filled nylon 6 and preparation technique thereof |
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| CN101792598A true CN101792598A (en) | 2010-08-04 |
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| CN200910233115A Pending CN101792598A (en) | 2009-11-26 | 2009-11-26 | Self-lubricating abrasion-resistant injection-class graphite-filled nylon 6 and preparation technique thereof |
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| CN (1) | CN101792598A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102585403A (en) * | 2012-03-12 | 2012-07-18 | 青岛开世密封工业有限公司 | Material formulation for oil seal both for rubber and plastic and material manufacturing method thereof |
| CN102876022A (en) * | 2012-11-05 | 2013-01-16 | 科创聚合物(苏州)有限公司 | Injection moulding grade graphite filled nylon 6 and manufacture process thereof |
-
2009
- 2009-11-26 CN CN200910233115A patent/CN101792598A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102585403A (en) * | 2012-03-12 | 2012-07-18 | 青岛开世密封工业有限公司 | Material formulation for oil seal both for rubber and plastic and material manufacturing method thereof |
| CN102876022A (en) * | 2012-11-05 | 2013-01-16 | 科创聚合物(苏州)有限公司 | Injection moulding grade graphite filled nylon 6 and manufacture process thereof |
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Open date: 20100804 |