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High performance nylon composite for railway fastener gauge apron and its preparation method

A nylon composite material and gauge baffle technology, which is applied in the field of polymer composite materials, can solve the problems of mechanical properties, electrical properties, dimensional stability, process operability, production efficiency and environmental protection deficiencies.

Active Publication Date: 2009-09-30
ZHUZHOU TIMES NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this product has many deficiencies in mechanical properties, electrical properties, dimensional stability, process operability, production efficiency and environmental protection, and cannot fully meet the needs of the vast railway market.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Selecting the mass parts of nylon 6 resin as 10 parts respectively, the mass parts of nylon 66 resin as 90 parts, the mass parts of maleic anhydride grafted POE as 12 parts, and the composite antioxidant 1098 or 168 mass parts as 0.3 or 0.2 parts respectively , the mass part of lubricant EBS or TAF is 0.2 or 0.5 part, the mass part of light stabilizer T234 or C944 is 0.2 or 0.2 part, the mass part of coupling agent KH550 is 0.3 part, and mix uniformly at room temperature in a high-speed mixer, The mass part of glass fiber is 35 parts, and it is added from the first exhaust port. The processing temperature (from the feeding port to the die head) is 270°C, 280°C, 280°C, 280°C, 280°C, 280°C, 280°C, 270°C, 270°C, and the speed of the main engine is 300 rpm or min. listed in Table 1.

[0026] Dry the granulated modified material and put it into an injection molding machine for molding processing. During the injection molding process: temperature 280°C, pressure 150MPa, pres...

Embodiment 2

[0028] The mass parts of nylon 66 resin is 80, the mass parts of nylon 612 resin is 20, the mass parts of maleic anhydride grafted POE is 12, the mass parts of antioxidant 1098 or 168 is 0.3 or 0.2, the lubricant EBS or TAF mass parts 0.2 or 0.3, the mass part of light stabilizer T234 or C944 is 0.2 or 0.3, the mass part of coupling agent KH550 is 0.3, mix uniformly at room temperature in a high-speed mixer, and use the FY35 test twin-screw extrusion produced by Nanjing Fuya Exit machine production, glass fiber mass parts are 40 and join from the first exhaust port. The processing temperature (from the feeding port to the die head) is 270°C, 280°C, 280°C, 280°C, 280°C, 280°C, 280°C, 270°C, 270°C, and the speed of the main engine is 300 rpm or min. listed in Table 1.

[0029] Dry the granulated modified material and put it into an injection molding machine for molding processing. During the injection molding process: temperature 280°C, pressure 150MPa, pressure holding time 30...

Embodiment 3

[0031] The mass part of nylon 6 resin is 60, the mass part of nylon 612 is 40, the mass part of maleic anhydride grafted POE is 12, the mass part of antioxidant 1098 or 168 is 0.3 or 0.2, and the mass part of lubricant EBS or TAF is 0.2 Or 0.5, the mass part of light stabilizer T234 or C944 is 0.2 or 0.3, the mass part of coupling agent KH550 is 0.3, mix uniformly at room temperature in a high-speed mixer, and use the FY35 test twin-screw extruder produced by Nanjing Fuya Production, glass fiber mass parts are 35 and add from the first exhaust port. The processing temperature (from the feeding port to the die head) is 270°C, 280°C, 280°C, 280°C, 280°C, 280°C, 280°C, 270°C, 270°C, and the speed of the main engine is 300 rpm. listed in Table 1.

[0032] Dry the granulated modified material and put it into an injection molding machine for molding processing. During the injection molding process: temperature 280°C, pressure 150MPa, pressure holding time 30 seconds. After the pro...

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PUM

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Abstract

A high performance nylon composite material for railway fastener gauge apron and a preparation method of the material are provided. The material is made of the following materials by mass portions: nylon resin: 100 portions; toughening agent: 1-20 portions; fiber glass: 20-50 portions; other auxiliary agents: 0.1-3 portions. The producing procedures include: Take a variety of nylon resin materials as base material, and carry out toughening, reinforcement, and modification to produce high-strength and high-rigidity nylon composite, and produce railway gauge aprons by injection molding. The obtained finished product has not deformation when tested at 60KN pressure for 3 times, and has passed a fatigue test of 5 million cycles. The material has excellent low temperature impact resistance performance, outstanding corrosion resistance performance and insulating performance.

Description

technical field [0001] The invention belongs to a material for railways and a manufacturing method thereof, in particular to a special high-performance nylon composite material for railway gauge baffles and a preparation method thereof, and belongs to the field of polymer composite materials. Background technique [0002] The railway gauge baffle is an important part of the railway fastener. Its main function is to fix the rail, prevent the longitudinal and lateral displacement of the rail, and prevent the rail from tipping, which is crucial to the safe operation of the railway. In recent years, with the rapid development of my country's railways, the requirements for railway technology and equipment levels have also increased. Type I and Type II gauge baffles of railway clips are widely used in domestic railway trunk lines. At present, they are mainly made of metal. Because the metal contains sulfides and is used outdoors for a long time, it is easy to cause pitting corrosi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L77/00C08K13/04C08K7/14B29B9/06B29B9/12B29C47/92B29C48/40B29C48/92
CPCB29C48/92B29C2948/92704B29C48/04B29C48/40B29C2948/9259B29C2948/92761B29C2948/92885B29C2948/92895B29C2948/9298
Inventor 曹喆贺旦强邓凯桓唐志才胡启科
Owner ZHUZHOU TIMES NEW MATERIALS TECH
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