CN102051043A - High wear-resistant and cold-resistant toughened nylon composite material - Google Patents
High wear-resistant and cold-resistant toughened nylon composite material Download PDFInfo
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- CN102051043A CN102051043A CN2009101980152A CN200910198015A CN102051043A CN 102051043 A CN102051043 A CN 102051043A CN 2009101980152 A CN2009101980152 A CN 2009101980152A CN 200910198015 A CN200910198015 A CN 200910198015A CN 102051043 A CN102051043 A CN 102051043A
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Abstract
The invention discloses a high wear-resistant and cold-resistant toughened nylon composite material, which comprises the following components in percentage by weight: 69.5 to 95 percent of nylon resin, 2 to 9 percent of toughening agent, 0.5 to 20 percent of wear-resisting agent and 1 to 2 percent of processing aid, wherein the toughening agent is maleic anhydride grafted polymer, and the wear-resisting agent is molybdenum disulfide or polytetrafluoroethylene micropowder. The product has higher wear resistance and better mechanical properties and low-temperature resistance, can be used for preparing relatively moving parts such as wearing plates and centre plates in the industries such as railway locomotives and automobiles, and can greatly improve the working stability of the parts and prolong the service life of the parts; in addition, the preparation process for the product is simple and low in cost and meets the requirement of industrial production; therefore, the high wear-resistant and cold-resistant toughened nylon composite material has wide market application prospect.
Description
Technical field
The present invention relates to a kind of high abrasion-cold resistant tenacity increased nylon composite material that can be used for preparing the component that relative movement is arranged, and belongs to the modified nylon composite material technical field.
Background technology
Though nylon resin has excellent comprehensive performances such as higher physical strength, thermotolerance, self lubricity, good barrier property and resistance to chemical attack, can be widely used in fields such as machinery manufacturing industry, electronic apparatus and communications and transportation, but pure nylon also has significant disadvantages, as: water-intake rate is big, made product size less stable; Low-temperature performance is relatively poor, has restricted its use under low temperature environment; Though have certain self lubricity, its frictional coefficient can not satisfy the requirement of use.For adapting to the needs of industrial development, in recent years nylon is carried out modification and caused that to improve above-mentioned defective people pay close attention to greatly, with the lower temperature resistance of improving nylon is example, Dupont company has at first developed Zytel ST series, adopt terpolymer EP rubber (EPDM) grafted maleic anhydride tenacity increased nylon, prepared the nylon alloy of resistance to low temperature excellence.After Du Pont, West Europe and Japan have also developed the super-tough nylon alloy of the various trades mark, and the patent of relevant high impact nylon alloy occurs in succession.Domesticly also prepared serial high impact-resistant nylon alloy in succession, performance reaches or near domestic like product.Nylon is carried out toughness reinforcing deep day by day both at home and abroad with the research that improves its resistance to low temperature, but the Study on Wear Resistance for nylon alloy seldom has the documents and materials report, for guaranteeing that nylon is having reliability of applying under the relative movement occasion, the wear resistance of research tenacity increased nylon is very important.
Summary of the invention
The objective of the invention is to aim to provide a kind of high abrasion-cold resistant tenacity increased nylon composite material that can be used for preparing the component that relative movement is arranged, to overcome the above-mentioned defective of existing in prior technology and to meet the need of market.
For achieving the above object, the technical solution used in the present invention is as follows:
High abrasion-cold resistant tenacity increased nylon composite material of the present invention, the weight percent that it is formed and each is formed is as follows:
Nylon resin 69.5%～95%
Toughner 2%～9%
Anti-wear agent 0.5%～20%
Processing aid 1%～2%
Above-mentioned each proportioning sum of forming is 100%; Described toughner is maleic anhydride grafted polymer, and described anti-wear agent is molybdenumdisulphide or ptfe micropowder.
Described nylon resin is better with nylon 66, and it is best especially to be not less than 2.7 nylon 66 with relative viscosity.
Described maleic anhydride grafted polymer can be selected from the mixture of maleic anhydride graft polyolefin elastomer POE, maleic anhydride graft terpolymer EP rubber EPDM, maleic anhydride grafted polyethylene, maleic anhydride grafted polyethylene and maleic anhydride graft polyolefin elastomer POE or the mixture of maleic anhydride grafted polyethylene and maleic anhydride graft terpolymer EP rubber EPDM.
The preferred mantoquita of described processing aid, four [β-(3,5-di-tert-butyl-4-hydroxy phenyl) propionic acid] pentaerythritol ester or two (2.4-di-tert-butyl-phenyl) pentaerythritol diphosphites.
The preparation technology of high abrasion-cold resistant tenacity increased nylon composite material of the present invention is as follows:
A) nylon resin, toughner, anti-wear agent and processing aid are added in the high mixer by proportioning, at room temperature mix;
B) utilize twin screw extruder to carry out extruding pelletization, cool off then, dry and get final product at 220～300 ℃.
Compared with prior art, product of the present invention not only has higher wear resisting property, and have mechanical property and resistance to low temperature preferably, can be used for preparing wearing plate in railway locomotive, the automobile and other industries, cartridge etc. has the component of relative movement, can improve the job stability of this type component greatly and prolong its work-ing life; In addition, the preparation technology of product of the present invention is simple, cost is lower, meets the suitability for industrialized production requirement; Therefore, high abrasion-cold resistant tenacity increased nylon composite material of the present invention has wide market application prospect.
Embodiment
Is doing further in detail of how realizing, explanation clearly and completely below in conjunction with specific embodiment to the present invention, and listed embodiment only gives further instruction to the present invention, and is not thereby limiting the invention.
Select for use among the embodiment:
Nylon resin-nylon 66 (PA66) is produced by the refreshing horse engineering plastics in tafelberg limited liability company, and the trade mark is EPR32;
Toughner-maleic anhydride graft polyolefin elastomer POE is produced by Shanghai Jinfa Technology Development Co., Ltd, and the trade mark is MPOE-1#;
Anti-wear agent-molybdenumdisulphide is by Shanghai gelatinizing plant produced;
Anti-wear agent-ptfe micropowder is produced by Su Wei (Shanghai) Co., Ltd., and the trade mark is F-510;
Processing aid-mantoquita is produced by Switzerland Ciba company, and the trade mark is HS-03.
The twin screw extruder of selecting for use among the embodiment is the 40A (length-to-diameter ratio is 40) that is produced by Rhea company.
Embodiment 1
The high abrasion-cold resistant tenacity increased nylon composite material of present embodiment, the weight percent that it is formed and each is formed is as follows:
Nylon resin 91.5%
Toughner 2%
Anti-wear agent 5%
Processing aid 1.5%
Described nylon resin is nylon 66 (PA66), and toughner is maleic anhydride graft polyolefin elastomer POE, and anti-wear agent is a ptfe micropowder, and processing aid is a mantoquita.
The preparation technology of described high abrasion-cold resistant tenacity increased nylon composite material is as follows:
A) nylon resin, toughner, anti-wear agent and processing aid are added in the high mixer by proportioning, at room temperature mix;
B) utilize twin screw extruder to carry out extruding pelletization, the processing condition of extruding pelletization are: 240 ℃ of district's temperature, 280 ℃ of two district's temperature, 280 ℃ of three district's temperature, 280 ℃ of four district's temperature, 275 ℃ of five district's temperature, 275 ℃ of six district's temperature, 275 ℃ of seven district's temperature, 270 ℃ of eight district's temperature, 270 ℃ of nine district's temperature, and engine speed is 350 rev/mins; Cool off then, dry and get final product.
Embodiment 2
The high abrasion-cold resistant tenacity increased nylon composite material of present embodiment, the weight percent that it is formed and each is formed is as follows:
Nylon resin 76.5%
Toughner 6%
Anti-wear agent 15%
Processing aid 1.5%
Described nylon resin is nylon 66 (PA66), and toughner is maleic anhydride graft polyolefin elastomer POE, and anti-wear agent is a ptfe micropowder, and processing aid is a mantoquita.
The preparation technology of the high abrasion-cold resistant tenacity increased nylon composite material of present embodiment is with embodiment 1.
Embodiment 3
The high abrasion-cold resistant tenacity increased nylon composite material of present embodiment, the weight percent that it is formed and each is formed is as follows:
Nylon resin 74.5%
Toughner 9%
Anti-wear agent 15%
Processing aid 1.5%
Described nylon resin is nylon 66 (PA66), and toughner is maleic anhydride graft polyolefin elastomer POE, and anti-wear agent is a ptfe micropowder, and processing aid is a mantoquita.
The preparation technology of the high abrasion-cold resistant tenacity increased nylon composite material of present embodiment is with embodiment 1.
Embodiment 4
The high abrasion-cold resistant tenacity increased nylon composite material of present embodiment, the weight percent that it is formed and each is formed is as follows:
Nylon resin 69.5%
Toughner 9%
Anti-wear agent 20%
Processing aid 1.5%
Described nylon resin is nylon 66 (PA66), and toughner is maleic anhydride graft polyolefin elastomer POE, and anti-wear agent is a ptfe micropowder, and processing aid is a mantoquita.
The preparation technology of the high abrasion-cold resistant tenacity increased nylon composite material of present embodiment is with embodiment 1.
Embodiment 5
The high abrasion-cold resistant tenacity increased nylon composite material of present embodiment, the weight percent that it is formed and each is formed is as follows:
Nylon resin 95%
Toughner 3%
Anti-wear agent 0.5%
Processing aid 1.5%
Described nylon resin is nylon 66 (PA66), and toughner is maleic anhydride graft polyolefin elastomer POE, and anti-wear agent is a molybdenumdisulphide, and processing aid is a mantoquita.
The preparation technology of the high abrasion-cold resistant tenacity increased nylon composite material of present embodiment is with embodiment 1.
Embodiment 6
The high abrasion-cold resistant tenacity increased nylon composite material of present embodiment, the weight percent that it is formed and each is formed is as follows:
Nylon resin 91.5%
Toughner 5%
Anti-wear agent 2%
Processing aid 1.5%
Described nylon resin is nylon 66 (PA66), and toughner is maleic anhydride graft polyolefin elastomer POE, and anti-wear agent is a molybdenumdisulphide, and processing aid is a mantoquita.
The preparation technology of the high abrasion-cold resistant tenacity increased nylon composite material of present embodiment is with embodiment 1.
Embodiment 7
The high abrasion-cold resistant tenacity increased nylon composite material of present embodiment, the weight percent that it is formed and each is formed is as follows:
Nylon resin 87.5%
Toughner 9%
Anti-wear agent 2%
Processing aid 1.5%
Described nylon resin is nylon 66 (PA66), and toughner is maleic anhydride graft polyolefin elastomer POE, and anti-wear agent is a molybdenumdisulphide, and processing aid is a mantoquita.
The preparation technology of the high abrasion-cold resistant tenacity increased nylon composite material of present embodiment is with embodiment 1.
Embodiment 8
The high abrasion-cold resistant tenacity increased nylon composite material of present embodiment, the weight percent that it is formed and each is formed is as follows:
Nylon resin 86.5%
Toughner 9%
Anti-wear agent 3%
Processing aid 1.5%
Described nylon resin is nylon 66 (PA66), and toughner is maleic anhydride graft polyolefin elastomer POE, and anti-wear agent is a molybdenumdisulphide, and processing aid is a mantoquita.
The preparation technology of the high abrasion-cold resistant tenacity increased nylon composite material of present embodiment is with embodiment 1.
The made sample of the various embodiments described above is carried out following performance test:
Tensile property: test by ISO527-2, specimen size is 150 * 10 * 4mm, and draw speed is 50mm/min;
Bending property: test by ISO178, specimen size is 80 * 10 * 4mm, and rate of bending is 2mm/min, and span is 64mm;
The socle girder unnotched impact strength: test by ISO179, specimen size is 80 * 10 * 4mm, and notch depth is 2mm;
Kinetic friction coefficient: test by ASTM G133, specimen size is 5 * 5 * 4mm, and surperficial positive pressure is 10N, and speed is 12.5cm/s.
The numerical value of the tensile strength that the over-all properties of material obtains by test, elongation at break, flexural strength, modulus in flexure, IZOD unnotched impact strength and kinetic friction coefficient is passed judgment on.
Embodiment 1～8 prepared sample performance test result is shown in Table 1:
Table 1 embodiment 1～8 prepared sample performance test result
| Performance | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Embodiment 6 | Embodiment 7 | Embodiment 8 |
| Unnotched impact strength (KJ/m 2)(23℃) | 85 | NB | NB | NB | 95 | NB | NB | NB |
| Unnotched impact strength (KJ/m 2)(-50℃) | 21 | NB | NB | NB | 60 | NB | NB | NB |
| Tensile strength (MPa) | 75.6 | 56 | 51 | 48 | 80.1 | 75.4 | 70.3 | 65.2 |
| Elongation at break (%) | 8.1 | 25.2 | 34.3 | 32.5 | 8.7 | 12.9 | 16.9 | 18.9 |
| Flexural strength (MPa) | 105.4 | 74 | 68 | 69 | 106.4 | 99.5 | 92.3 | 90.2 |
| Modulus in flexure (MPa) | 2546 | 2013 | 1987 | 1987 | 2612 | 2423 | 2214 | 2129 |
| Kinetic friction coefficient | 0.294 | 0.159 | 0.165 | 0.152 | 0.254 | 0.156 | 0.164 | 0.144 |
By table 1 as seen: contrast two kinds of different anti-wear agents, when reaching suitable kinetic friction coefficient, the consumption of tetrafluoroethylene is much larger than the consumption of molybdenumdisulphide, and the mechanical property influence to system when using molybdenumdisulphide as anti-wear agent is less, and tetrafluoroethylene is because large usage quantity, and therefore the mechanical property influence to system is bigger; Single from kinetic friction coefficient, the consumption increase of two kinds of different anti-wear agents all can make kinetic friction coefficient reduce, and the raising of toughner consumption all can make kinetic friction coefficient that raising trend is arranged; If is anti-wear agent with the tetrafluoroethylene, when its consumption be 15%, when the toughner consumption is 6%, the over-all properties of prepared abrasion-proof and cold-resistant tenacity increased nylon composite material is best; If is anti-wear agent with molybdenumdisulphide, when its consumption be 2%, when the toughner consumption is 5%, the over-all properties of prepared abrasion-proof and cold-resistant tenacity increased nylon composite material is best.
In addition, experiment also proves: the toughner in the foregoing description-maleic anhydride graft polyolefin elastomer POE can replace with the mixture of maleic anhydride graft terpolymer EP rubber EPDM, maleic anhydride grafted polyethylene, maleic anhydride grafted polyethylene and maleic anhydride graft polyolefin elastomer POE or the mixture of maleic anhydride grafted polyethylene and maleic anhydride graft terpolymer EP rubber EPDM; Processing aid-mantoquita in the foregoing description can replace with four [β-(3,5-di-tert-butyl-4-hydroxy phenyl) propionic acid] pentaerythritol ester or two (2.4-di-tert-butyl-phenyl) pentaerythritol diphosphites.
Claims (5)
1. a high abrasion-cold resistant tenacity increased nylon composite material is characterized in that, the weight percent that it is formed and each is formed is as follows:
Nylon resin 69.5%～95%
Toughner 2%～9%
Anti-wear agent 0.5%～20%
Processing aid 1%～2%
Above-mentioned each proportioning sum of forming is 100%; Described toughner is maleic anhydride grafted polymer, and described anti-wear agent is molybdenumdisulphide or ptfe micropowder.
2. high abrasion-cold resistant tenacity increased nylon composite material according to claim 1 is characterized in that, described nylon resin is a nylon 66.
3. high abrasion-cold resistant tenacity increased nylon composite material according to claim 2 is characterized in that the relative viscosity of described nylon 66 is not less than 2.7.
4. high abrasion-cold resistant tenacity increased nylon composite material according to claim 1, it is characterized in that described maleic anhydride grafted polymer is the mixture of maleic anhydride graft polyolefin elastomer POE, maleic anhydride graft terpolymer EP rubber EPDM, maleic anhydride grafted polyethylene, maleic anhydride grafted polyethylene and maleic anhydride graft polyolefin elastomer POE or the mixture of maleic anhydride grafted polyethylene and maleic anhydride graft terpolymer EP rubber EPDM.
5. high abrasion-cold resistant tenacity increased nylon composite material according to claim 1, it is characterized in that, described processing aid is mantoquita, four [β-(3,5-di-tert-butyl-4-hydroxy phenyl) propionic acid] pentaerythritol ester or two (2.4-di-tert-butyl-phenyl) pentaerythritol diphosphites.
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| CN102757641A (en) * | 2012-08-10 | 2012-10-31 | 平顶山亚塑工业有限公司 | High toughness and wear resistant nylon and preparation method thereof |
| CN102816428A (en) * | 2012-08-20 | 2012-12-12 | 中国兵器工业集团第五三研究所 | Anti-aging lubricating nylon-66 material with appropriate rigidness and flexibility |
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| CN101302338A (en) * | 2008-05-21 | 2008-11-12 | 深圳市科聚新材料有限公司 | High-toughness, wear-resistant, self-lubricating polyamide material and preparation thereof |
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| CN101302338A (en) * | 2008-05-21 | 2008-11-12 | 深圳市科聚新材料有限公司 | High-toughness, wear-resistant, self-lubricating polyamide material and preparation thereof |
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| CN103571184A (en) * | 2012-07-31 | 2014-02-12 | 金发科技股份有限公司 | Nylon 6 molding composition, and preparation method and application thereof |
| CN102757641A (en) * | 2012-08-10 | 2012-10-31 | 平顶山亚塑工业有限公司 | High toughness and wear resistant nylon and preparation method thereof |
| CN102816428A (en) * | 2012-08-20 | 2012-12-12 | 中国兵器工业集团第五三研究所 | Anti-aging lubricating nylon-66 material with appropriate rigidness and flexibility |
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| CN104046009A (en) * | 2014-06-20 | 2014-09-17 | 浙江衢州万能达科技有限公司 | Nylon 6-polytetrafluoroethylene composition |
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| CN104046018B (en) * | 2014-06-20 | 2016-08-24 | 浙江衢州万能达科技有限公司 | A kind of polyhexamethylene adipamide composition |
| CN105086432A (en) * | 2015-08-26 | 2015-11-25 | 河北北田工程塑料有限公司 | High-viscosity nylon 6 and preparation method thereof |
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