A kind of tpee pad material and preparation technology thereof for rail transit

A technology for rail transit and backing plate, applied in the field of TPEE backing plate material for rail transit and its preparation technology, can solve the problems of easy change and decrease of static stiffness and dynamic stiffness, short service life of rubber material, large elastic deformation of rubber backing plate, etc. , to achieve the effect of excellent chemical resistance, stable structure and small elastic deformation

Active Publication Date: 2021-04-13
江阴爱科森博顿聚合体有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] (1) The rubber backing plate is seriously damaged under heavy load;
[0004] (2) The service life of the rubber material is short and easy to age;
[0005] (3) The static stiffness and dynamic stiffness are easy to change and decrease, which affects the stability of the train;
[0006] (4) The elastic deformation of the rubber backing plate is relatively large, which can easily cause the fasteners to loosen, and it is difficult to maintain the buckle pressure

Method used

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  • A kind of tpee pad material and preparation technology thereof for rail transit

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A kind of technology of rail transit TPEE pad material, comprises the following steps:

[0035] (1) Preparation of modified silica: add silica to ethanol solution, ultrasonically disperse for 3-5 minutes, add KH570 coupling agent to oxalate ethanol solution with pH 3-4, couple silica ethanol solution with KH570 Mix the oxalic acid-ethanol solution of the joint agent according to the volume ratio of 1:1; oscillate and mix at 80-90°C for 3 hours, then centrifuge, wash with 50% ethanol solution for 2-3 times, and dry the centrifuged sediment;

[0036]Dry TPEE at 60°C for 48h, mix the dried TPEE and modified silica on a torque rheometer and mix evenly, the mixing temperature is 200°C, and the mixing time is 2min to obtain TPEE / SiO 2 composite materials;

[0037] (2) Preparation of UV-absorbing masterbatch: Weigh carbon black and EVA wax and mix in a mixer, the mixing temperature is 170-180°C, and the mixing time is 10min, and the mixed mixture is crushed and granulated wit...

Embodiment 2

[0042] A kind of technology of rail transit TPEE pad material, comprises the following steps:

[0043] (1) Preparation of modified silica: add silica to ethanol solution, ultrasonically disperse for 3-5 minutes, add KH570 coupling agent to oxalate ethanol solution with pH 3-4, couple silica ethanol solution with KH570 Mix the oxalic acid-ethanol solution of the joint agent according to the volume ratio of 1:1; oscillate and mix at 80-90°C for 3 hours, then centrifuge, wash with 50% ethanol solution for 2-3 times, and dry the centrifuged sediment;

[0044] Dry TPEE at 60°C for 48 hours, mix the dried TPEE and modified silica on a torque rheometer and mix evenly, the mixing temperature is 200°C, and the mixing time is 2min to obtain TPEE / SiO2 composite material;

[0045] (2) Preparation of UV-absorbing masterbatch: take carbon black and EVA wax and mix in a mixer, the mixing temperature is 175° C., and the mixing time is 6 minutes. After the mixed mixture is crushed, it is granu...

Embodiment 3

[0050] A kind of technology of rail transit TPEE pad material, comprises the following steps:

[0051] (1) Preparation of modified silica: add silica to ethanol solution, ultrasonically disperse for 3-5 minutes, add KH570 coupling agent to oxalate ethanol solution with pH 3-4, couple silica ethanol solution with KH570 Mix the oxalic acid-ethanol solution of the joint agent according to the volume ratio of 1:1; oscillate and mix at 80-90°C for 3 hours, then centrifuge, wash with 50% ethanol solution for 2-3 times, and dry the centrifuged sediment;

[0052] Dry TPEE at 60°C for 48 hours, mix the dried TPEE and modified silica on a torque rheometer and mix evenly, the mixing temperature is 200°C, and the mixing time is 2min to obtain TPEE / SiO2 composite material;

[0053] (2) Preparation of UV-absorbing masterbatch: take carbon black and EVA wax and mix in a mixer, the mixing temperature is 175° C., and the mixing time is 6 minutes. After the mixed mixture is crushed, it is granu...

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Abstract

The invention discloses a TPEE backing plate material for rail transit, which is calculated by weight percent: 65-80% of TPEE thermoplastic polyester elastomer; 8-15% of PTA; 8-15% of improving agent; modified carbon dioxide 2-5% of silicon; 1-3% of ultraviolet light absorbing masterbatch; 0.5-2% of antioxidant, and the sum of the contents of each component is 100%. The invention provides a TPEE backing plate for rail transit with chemical resistance, high fatigue resistance, wear resistance, stable backing plate structure, small plastic change, small elastic deformation under heavy load, and can well meet the requirements of heavy-load transportation. Material.

Description

technical field [0001] The invention relates to the technical field of rail transit thermoplastic elastomers, in particular to a TPEE pad material for rail transit and a preparation process thereof. Background technique [0002] The existing backing plate for rail transit is a rubber backing plate, which has the following problems in use: [0003] (1) The rubber backing plate is seriously damaged under heavy load; [0004] (2) The service life of the rubber material is short and easy to age; [0005] (3) The static stiffness and dynamic stiffness are easy to change and decrease, which affects the stability of the train; [0006] (4) The elastic deformation of the rubber backing plate is relatively large, which can easily cause the fasteners to loosen, and it is difficult to maintain the buckle pressure. [0007] Therefore, there is an urgent need to find new materials that can replace rubber pads. [0008] Thermoplastic polyester elastomer (Thermoplastic Polyester Elasto...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/00C08L67/02C08L23/08C08L69/00C08K13/06C08K9/06C08K9/04C08K3/36C08K3/04C08J3/22
CPCC08J3/226C08J2367/00C08J2423/08C08J2467/02C08J2469/00C08K3/04C08K3/36C08K9/04C08K9/06C08K13/06
Inventor 苏迎旭黄小明
Owner 江阴爱科森博顿聚合体有限公司
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