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A kind of nylon fiber for train brake hose, its preparation method and application

A technology of nylon fiber and brake hose, which is applied in the field of nylon fiber, can solve the problems of high cost of braided wire, low cohesive force, short service life of brake hose, etc., to meet performance requirements, improve elasticity and processing performance , high elastic effect

Active Publication Date: 2020-08-14
T RUBBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The braided layer is mostly woven with vinylon, strong silk or polyester thread material. On the one hand, the cost of braided threads such as vinylon thread is relatively high, and the brake tube braided with cotton thread has low strength; on the other hand, the breaking elongation of the braided thread The length ratio cannot meet the requirements of ultra-low expansion coefficient and ultra-long flex life of the brake hose; moreover, usually the skeleton layer of the brake hose has low adhesion to the inner and outer rubber layers, and the burst pressure and tensile strength are small , in the locomotive driving and maintenance process, it is easy to be affected by external force and cause the pipe body to break or explode abnormally, which greatly shortens the service life of the brake hose

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A kind of nylon fiber for train brake hose, by weight, comprises the following raw materials:

[0023] 50 parts of nylon chips, 7 parts of ammonium polyphosphate, 8 parts of cyclic phosphate, 1 part of graphene, 2 parts of antioxidant 1098, 30 parts of stainless steel fiber, 2 parts of SBS.

[0024] Wherein, the nylon chips are spun nylon chips with a viscosity of 3-5dl / g.

[0025] The diameter of the stainless steel fiber is 0.032-0.037mm.

[0026] A preparation method of nylon fiber for train brake hose, comprising the steps of:

[0027] (1) Nylon chips, graphene, ammonium polyphosphate, cyclic phosphate, antioxidant 1098 and SBS are mixed, extruded and granulated to obtain graphene-nylon masterbatch;

[0028] (2) Graphene-nylon masterbatch is through melt spinning, makes graphene-nylon nano-composite fiber;

[0029] (3) The graphene-nylon nanocomposite fiber and the stainless steel fiber are intertwined, and finally the graphene-nylon nanocomposite fiber is wrappe...

Embodiment 2

[0034] A kind of nylon fiber for train brake hose, by weight, comprises the following raw materials:

[0035] 70 parts of nylon chips, 10 parts of ammonium polyphosphate, 5 parts of cyclic phosphate, 0.5 parts of graphene, 10763 parts of antioxidant, 50 parts of stainless steel fiber, 0.5 part of SEBS.

[0036] Wherein, the nylon chips are spun nylon chips with a viscosity of 3-5dl / g.

[0037] The diameter of the stainless steel fiber is 0.032-0.037mm.

[0038] A preparation method of nylon fiber for train brake hose, comprising the steps of:

[0039] (1) Nylon slices, graphene, ammonium polyphosphate, cyclic phosphate, antioxidant 1076 and SEBS are mixed, extruded and granulated to obtain graphene-nylon masterbatch;

[0040] (2) Graphene-nylon masterbatch is through melt spinning, makes graphene-nylon nano-composite fiber;

[0041] (3) The graphene-nylon nanocomposite fiber and the stainless steel fiber are intertwined, and finally the graphene-nylon nanocomposite fiber is...

Embodiment 3

[0046] A kind of nylon fiber for train brake hose, by weight, comprises the following raw materials:

[0047] 80 parts of nylon chips, 5 parts of ammonium polyphosphate, 7 parts of cyclic phosphate, 2 parts of graphene, 1 part of antioxidant SEED, 60 parts of stainless steel fiber, 3 parts of SBS.

[0048] Wherein, the nylon chips are spun nylon chips with a viscosity of 3-5dl / g.

[0049] The diameter of the stainless steel fiber is 0.032-0.037mm.

[0050] A preparation method of nylon fiber for train brake hose, comprising the steps of:

[0051] (1) Nylon chips, graphene, ammonium polyphosphate, cyclic phosphate, antioxidant SEED and SBS are mixed, extruded and granulated to obtain graphene-nylon masterbatch;

[0052] (2) Graphene-nylon masterbatch is through melt spinning, makes graphene-nylon nano-composite fiber;

[0053] (3) The graphene-nylon nanocomposite fiber and the stainless steel fiber are intertwined, and finally the graphene-nylon nanocomposite fiber is wrapped ...

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Abstract

The invention discloses a chinlon fiber for a train brake hose and a preparing method and application of the chinlon fiber. The chinlon fiber is prepared from, by weight, 50-80 parts of chinlon slices, 5-10 parts of ammonium polyphosphate, 5-8 parts of cyclic phosphate, 0.5-2 parts of graphene, 1-3 parts of antioxidant, 30-60 parts of stainless steel fiber and 0.5-3 parts of flexibilizer. The chinlon fiber formed by combining chinlon, graphene and stainless steel fiber has high elasticity and can meet the requirements for the ultra-low expansion coefficient of the brake hose and super-long flexural life and good flexural fatigue performance; meanwhile, the elongation, elasticity and machining performance of a framework layer prepared from the prepared chinlon fiber are greatly improved, and the requirement for performance of the train brake hose can be met.

Description

technical field [0001] The invention relates to the technical field of nylon fibers, in particular to a nylon fiber for train brake hoses, its preparation method and application. Background technique [0002] The train is equipped with brake hose connectors at the end of the train, so that the train pipe and the main air duct of the train braking system are connected through the brake hose connector at the end of the train to realize the through connection of the train pipe and the main air duct of the whole train. When the brake hose connector at the vehicle end is not connected to the adjacent vehicle due to some reasons (such as at the rear of the train or other situations), measures should be taken to restrain the brake hose connector and block the interface to prevent Foreign matter has entered. [0003] my country's trains are equipped with brake hose connectors at the end of the train. When the brake hose connectors are not connected to adjacent vehicles, such as whe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D02G3/04D02G3/38D01F8/18D01F8/12D01D5/30B60T17/04
CPCB60T17/043D01D5/30D01F8/12D01F8/18D02G3/04D02G3/38D10B2101/12D10B2101/20D10B2331/02
Inventor 张楠丁凯胡瑞芳陈忱
Owner T RUBBER