CN101792595A - Self-lubricating abrasion-resistant injection-class high-temperature nylon and preparation technique thereof - Google Patents
Self-lubricating abrasion-resistant injection-class high-temperature nylon and preparation technique thereof Download PDFInfo
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- CN101792595A CN101792595A CN200910233117A CN200910233117A CN101792595A CN 101792595 A CN101792595 A CN 101792595A CN 200910233117 A CN200910233117 A CN 200910233117A CN 200910233117 A CN200910233117 A CN 200910233117A CN 101792595 A CN101792595 A CN 101792595A
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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 high-temperature nylon and a preparation technique thereof. The nylon consists of the following components in proportion by weight: 68 percent to 97 percent of high-temperature nylon; 0.1 percent to 2.5 percent of high-molecular weight silicone oil; 3 percent to 35 percent of silicon abrasion-resistant modifier; 0.3 percent to 1.5 percent of antioxidant; and 0.3 percent to 5.5 percent of other additives. On the basis of maintaining the comprehensive performance of the prior filled high-temperature nylon, the nylon 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; 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 high-temperature nylon and preparation method 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 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 equally also useful high temperature resistant nylon of the device of novel appts and assembly replaces 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 infrared (IR) high temperature that reflow ovens produced that uses in the pb-free solder process, and identical intensity is provided under wet environment, remarkable chemical resistant properties.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, 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 insufficient shortcoming of self wear resistance allows people's headache very much.Also require relative starting material of starting material and production cost lower.The bigger range of application that limits high-temperature nylon of this shortcoming.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 Halogen 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 of environmental requirement strictness.
Summary of the invention
The objective of the invention is to effectively overcome the defective of prior art, the self-lubricating abrasion-resistant injection-class 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 abrasion-resistant injection-class high-temperature nylon of the present invention, form high-temperature nylon by weight by following composition: 68-97%; High molecular silicone oil: 0.1-2.5%; Silicon is wear-resisting properties-correcting agent: 3-35%, antioxidant: 0.3-1.5%; Other auxiliary agents: 0.3-5.5%.
Self-lubricating abrasion-resistant injection-class high-temperature nylon Production Flow Chart of the present invention is: earlier high-temperature nylon and high molecular silicone oil were mixed in mixer 10 minutes, then with silicon be wear-resisting properties-correcting agent, antioxidant, 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 the self-lubricating abrasion-resistant injection-class 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 abrasion-resistant injection-class 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 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, and the starting material production procurement is convenient, 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 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 abrasion-resistant injection-class high-temperature nylon is provided, and forms high-temperature nylon by weight by following composition: 91.4%; High molecular silicone oil: 2.0%; Silicon is wear-resisting properties-correcting agent: 5%, and antioxidant: 1.0%; Other auxiliary agents: 0.6%.
Earlier high-temperature nylon and high molecular silicone oil were mixed in mixer 10 minutes, then with antioxidant, silicon be wear-resisting properties-correcting agent, 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 the self-lubricating abrasion-resistant injection-class high-temperature nylon material through screening and dewatering.
Claims (2)
1. a self-lubricating abrasion-resistant injection-class high-temperature nylon is characterized in that: form high-temperature nylon by weight by following composition: 68-97%; High molecular silicone oil: 0.1-2.5%; Silicon is wear-resisting properties-correcting agent: 3-35%, antioxidant: 0.3-1.5%; Other auxiliary agents: 0.3-5.5%.
2. method for preparing self-lubricating abrasion-resistant injection-class high-temperature nylon, it is characterized in that: comprise the steps: earlier high-temperature nylon and high molecular silicone oil to be mixed in mixer 10 minutes, then with silicon be wear-resisting properties-correcting agent, antioxidant, 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 the self-lubricating abrasion-resistant injection-class high-temperature nylon material through screening and dewatering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910233117A CN101792595A (en) | 2009-11-26 | 2009-11-26 | Self-lubricating abrasion-resistant injection-class high-temperature nylon and preparation technique thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910233117A CN101792595A (en) | 2009-11-26 | 2009-11-26 | Self-lubricating abrasion-resistant injection-class high-temperature nylon and preparation technique thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101792595A true CN101792595A (en) | 2010-08-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN200910233117A Pending CN101792595A (en) | 2009-11-26 | 2009-11-26 | Self-lubricating abrasion-resistant injection-class high-temperature nylon and preparation technique thereof |
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| CN (1) | CN101792595A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102876009A (en) * | 2012-11-05 | 2013-01-16 | 科创聚合物(苏州)有限公司 | Wear-resisting injection molding high temperature nylon and manufacturing process thereof |
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2009
- 2009-11-26 CN CN200910233117A patent/CN101792595A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102876009A (en) * | 2012-11-05 | 2013-01-16 | 科创聚合物(苏州)有限公司 | Wear-resisting injection molding high temperature nylon and manufacturing process thereof |
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Open date: 20100804 |