CN102816428B - Anti-aging lubricating nylon-66 material with appropriate rigidness and flexibility - Google Patents
Anti-aging lubricating nylon-66 material with appropriate rigidness and flexibility Download PDFInfo
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Abstract
The invention belongs to the technical field of a novel material, relates to the engineering plastics modification technology, and in particular to the engineering plastics flexible balance modification technology. The invention relates to an anti-aging lubricating nylon-66 material with appropriate rigidness and flexibility, which is prepared by adopting inorganic powder, anti-wear agent, flexibilizer, anti-aging assistant, internal lubricating processing assistant and the like to compositely modify the nylon-66 material. The anti-aging lubricating nylon-66 material at least comprises following ingredients (by weight percent): 100 parts of nylon-66, 5 to 25 parts of flexibilizer, 5 to 50 parts of talcum powder, 2 to 10 parts of molybdenum disulfide and 2 to 5 parts of channel black. The material has excellent tribology performance, excellent physical mechanical performance and excellent anti-aging performance, after being accelerated to age for 3500h under the hot and damp condition, the tensile strength is only reduced by 11.7 percent, the bending strength is reduced by 12 percent, and the notch impact performance is reduced by 4.5 percent. The anti-aging lubricating nylon-66 material can be widely applied to the parts requiring the lubrication and anti-aging performance such as a lubricating bearing, a shaft sleeve, a gear, a bearing holder and the like. The preparation method is simple, and the anti-aging lubricating nylon-66 material has industrialized application prospect.
Description
Technical field
The invention belongs to new material technology field, relate to engineering plastic modification technology, particularly engineering plastics rigidity-toughness balanced modification technology.
Background technology
At present, domestic lubricated nylon 66 material mainly adopts lubricant to add fiber reinforcement, or lubricant adds the methods such as compatilizer and is prepared from.
CN101864168B has disclosed a kind ofly take nylon as matrix, adopts radiation pre-treatment polyethylene, carbon fiber, adds compatilizer, has prepared a kind of wear-resistant self-lubricating nylon compound material.
CN01955664A has disclosed a kind ofly take nylon as matrix, adopts anti-wear agent, glass fibre, toughner, has prepared a kind of textile equipment with strengthening wear resistant nylon 66 mixtures.
CN100540607C has disclosed a kind ofly take nylon as matrix, adopts glass microfiber, ultra micro nano inorganic mineral particle, toughner to prepare the method that strengthens tenacity increased nylon composite material.
At present, domestic lubricated nylon 66 material mainly adopts lubricant to add fiber reinforcement, or lubricant adds the methods such as compatilizer and be prepared from, and adopts lubricant to add the lubricated nylon 66 material of fiber reinforcement preparation, and its rigidity is too large, and elongation at break is too low; Adopt lubricant to add the lubricated nylon 66 material of compatilizer preparation, its rigidity is too low, and elongation at break is too high.And all do not consider the ageing resistance of nylon material, often have the shortcomings such as processing characteristics, ageing resistance be poor.
Summary of the invention
The object of the present invention is to provide a kind of strong and unyielding moderate anti-aging lubricated nylon 66 material.
The object of the present invention is achieved like this, utilizes inorganic powder, anti-wear agent, toughner, anti-aging auxiliary agent, interior lubricated processing aid etc. to carry out composite modified to nylon 66 material.Talcum powder is used for suitably improving the rigidity of material.Molybdenumdisulphide improves the crocking resistance of material.Channel black is used for improving the ageing resistance of material.Interior lubricating auxiliary agent is used for improving Drawing abillity.Toughner improves the bonding force of each component, disperses better each phase component, improves the over-all properties of material.Oxidation inhibitor makes nylon in the course of processing, possess good processing stability, avoids color and luster, performance to change.
The anti-aging lubricated nylon 66 material the present invention relates to, at least comprises the raw material of following mass parts:
Wherein the limiting viscosity of polyamide 66 is 2.5～3.5; Toughner is the glycidyl methacrylate graft polystyrene-poly ethene-polyhutadiene-thermoplastic polystyrene elastomer (hereinafter to be referred as SEBS) of percentage of grafting between 0.5-1%; Talcum powder particle diameter is between 200-3000 order; Molybdenumdisulphide particle diameter is not more than 10 μ m; Channel black particle diameter is not more than between 30nm.
The anti-aging lubricated nylon 66 material the present invention relates to, at least comprises the raw material of following mass parts:
The strong and unyielding moderate anti-aging lubricated nylon 66 material the present invention relates to, the limiting viscosity of described polyamide 66 is between 2.5～2.7.
The strong and unyielding moderate anti-aging lubricated nylon 66 material the present invention relates to, described toughner is the glycidyl methacrylate graft SEBS of percentage of grafting between 0.75-1%.
The strong and unyielding moderate anti-aging lubricated nylon 66 material the present invention relates to, described talcous particle diameter is between 750-1500 order.
The strong and unyielding moderate anti-aging lubricated nylon 66 material the present invention relates to, not only there is excellent tribological property and physical and mechanical properties, and there is excellent ageing resistance, the damp and hot accelerated deterioration tensile strength of its 3500h only declines 11.7%, flexural strength declines 12%, notch shock degradation 4.5%.Can be widely used in lubricating bearings, axle sleeve, gear, retainer etc. and need the parts such as lubricated, ageing-resistant.Preparation method is simple, has industrial applications prospect.
Specific embodiments
Below in conjunction with specific embodiment, the present invention is described in further detail, but is not limited to this, the embodiment of any technical scheme disclosing according to the present invention all forms a part of the present invention.
Embodiment 1
Selecting viscosity is 2.7 nylon 66:100 mass parts; Percentage of grafting is 0.75% glycidyl methacrylate graft SEBS:10 mass parts; Particle diameter is 1000 object talcum powder: 10 mass parts; Molybdenumdisulphide: 2 mass parts; Channel black: 4 mass parts; Oxidation inhibitor 1098 and irgasfos 168 composite (1: 1): 0.5 mass parts; Oleylamide: 2 mass parts.
By said components weight ratio, take raw material, put into high-speed mixer and mixing 5 minutes, the raw material of mixing is put into screw machine extruding pelletization, and the rotating speed of screw machine is 200 revs/min, processing temperature 240-280 ℃, the strong and unyielding moderate anti-aging lubricated nylon 66 material that obtains the present invention relates to, the tensile strength recording by national standard is 70MPa, and elongation at break is 30%, and flexural strength is 70MPa, modulus in flexure is 2.5GPa, and frictional coefficient is 0.17.
Embodiment 2
Selecting viscosity is 2.5 nylon 66:100 mass parts; Percentage of grafting is 0.50% glycidyl methacrylate graft SEBS:5 mass parts; Particle diameter is 200 object talcum powder: 15 mass parts; Molybdenumdisulphide: 8 mass parts; Channel black: 3 mass parts; Oxidation inhibitor 1098:0.5 mass parts; Oleylamide: 5 mass parts.
Preparation method is with embodiment 1, and the tensile strength recording by national standard is 60MPa, and elongation at break is 36%, and flexural strength is 74MPa, and modulus in flexure is 2.2GPa, and frictional coefficient is 0.16.
Through 3500h(temperature 50 C, humidity 95%RH) after hydrothermal aging, tensile strength drops to 53MPa by 60MPa, and flexural strength drops to 66MPa by 75MPa, and notched Izod impact strength is by 6.7kJ/m
2drop to 6.4kJ/m
2.
Embodiment 3
Selecting viscosity is 3.5 nylon 66:100 mass parts; Percentage of grafting is 1.0% glycidyl methacrylate graft SEBS:25 mass parts; Particle diameter is 750 object talcum powder: 50 mass parts; Molybdenumdisulphide: 4 mass parts; Channel black: 5 mass parts; Oxidation inhibitor 1098 and irgasfos 168 composite (1:1): 1 mass parts; Oleylamide: 4 mass parts.
Preparation method is with embodiment 1, and the tensile strength recording by national standard is 74MPa, and elongation at break is 35%, and flexural strength is 73MPa, and modulus in flexure is 2.2GPa, and frictional coefficient is 0.17.
Embodiment 4
Selecting viscosity is 3.0 nylon 66:100 mass parts; Percentage of grafting is 0.7% glycidyl methacrylate graft SEBS:8 mass parts; Particle diameter is 1500 object talcum powder: 5 mass parts; Molybdenumdisulphide: 10 mass parts; Channel black: 2 mass parts; Oxidation inhibitor 1098:2 mass parts; Oleylamide: 3 mass parts.
Preparation method is with embodiment 1, and the tensile strength recording by national standard is 65MPa, and elongation at break is 25%, and flexural strength is 74MPa, and modulus in flexure is 2.8GPa, and frictional coefficient is 0.2.
Embodiment 5
Selecting viscosity is 2.6 nylon 66:100 mass parts; Percentage of grafting is 0.85% glycidyl methacrylate graft SEBS:15 mass parts; Particle diameter is 3000 object talcum powder: 25 mass parts; Molybdenumdisulphide: 5 mass parts; Channel black: 3.5 mass parts; Oxidation inhibitor 1098 and irgasfos 168 composite (1:1): 3 mass parts.
Preparation method is with embodiment 1, and the tensile strength recording by national standard is 61MPa, and elongation at break is 20%, and flexural strength is 75MPa, and modulus in flexure is 3.0GPa, and frictional coefficient is 0.18.
Claims (5)
1. an anti-aging lubricated nylon 66 material, at least comprises the raw material of following mass parts:
Wherein the limiting viscosity of polyamide 66 is 2.5～3.5; Toughner is the glycidyl methacrylate graft polystyrene-poly ethene-polyhutadiene-thermoplastic polystyrene elastomer of percentage of grafting between 0.5-1%; Talcum powder particle diameter is between 200-3000 order; Molybdenumdisulphide particle diameter is not more than 10 μ m; Channel black particle diameter is not more than between 30nm.
2. anti-aging lubricated nylon 66 material according to claim 1, at least comprises the raw material of following mass parts:
3. anti-aging lubricated nylon 66 material according to claim 1 and 2, the limiting viscosity of described polyamide 66 is between 2.5～2.7.
4. anti-aging lubricated nylon 66 material according to claim 1 and 2, described toughner is the glycidyl methacrylate graft polystyrene-poly ethene-polyhutadiene-thermoplastic polystyrene elastomer of percentage of grafting between 0.75-1%.
5. anti-aging lubricated nylon 66 material according to claim 1 and 2, described talcous particle diameter is between 750-1500 order.
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| CN103642223A (en) * | 2013-11-18 | 2014-03-19 | 安徽宜万丰电器有限公司 | Anti-ultraviolet ageing-resistant modified nylon 66 material for automobile plastic members |
| CN105860513A (en) * | 2016-04-28 | 2016-08-17 | 宁夏宝塔石化科技实业发展有限公司 | Method for reinforcing strength of nylon bearing retainer by utilizing waste carbon fibers |
| CN105926071B (en) * | 2016-06-08 | 2018-06-26 | 江苏海阳化纤有限公司 | A kind of black Fypro and preparation method thereof |
| CN105821511B (en) * | 2016-06-08 | 2018-07-06 | 江苏海阳化纤有限公司 | A kind of black Fypro and preparation method thereof |
| CN107559313A (en) * | 2016-06-30 | 2018-01-09 | 襄阳汽车轴承股份有限公司 | 4 points of sealed heavily loaded deep groove ball bearings of contact with filling slot |
| CN109852050A (en) * | 2018-12-24 | 2019-06-07 | 余姚中国塑料城塑料研究院 | A kind of glass fiber reinforcement low-smoke non-halogen flame-retardant PA66 material and preparation method thereof |
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| CN100334152C (en) * | 2005-03-29 | 2007-08-29 | 绵阳市重业直锥齿轮有限责任公司 | Plastic cushion composition for automobile gear and its preparing method |
| CN102051043B (en) * | 2009-10-30 | 2013-06-05 | 上海金发科技发展有限公司 | High wear-resistant and cold-resistant toughened nylon composite material |
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