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A kind of preparation method of composite material sleeper

A technology of composite materials and sleepers, which is applied in the field of molding and preparation of railway engineering building components, can solve the problems of inability to realize continuous production, poor product stability, and heavy workload, and achieve the effects of simple structure, good product elasticity, and low cost

Active Publication Date: 2018-02-09
ZHUZHOU TIMES NEW MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing synthetic composite material sleepers are prepared by molding process. Although the molding process is simple and feasible, for batch products, the workload is large and the efficiency is low, continuous production cannot be realized, and the stability of the product is poor

Method used

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  • A kind of preparation method of composite material sleeper
  • A kind of preparation method of composite material sleeper
  • A kind of preparation method of composite material sleeper

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] a kind of like figure 1 Shown is the preparation method of the composite material sleeper of the present invention, this preparation method uses such as figure 1 The molding system shown, the molding system includes a feeding mechanism 1, a dipping mechanism 2, a pair of roller extrusion devices 3, a preforming mold system 4, a forming mold system 5, a traction device 6 and a cutting device 7, and the feeding mechanism 1 includes a The glass fiber roving feeding device 11 in the middle layer and the fiber mat feeding device 12 located on the upper and lower layers, the glass fiber roving feeding device 11 passes the glass fiber roving in series in series with the impregnation mechanism 2 and the roller extrusion device 3 , the upper and lower fiber mat feeding devices 12 are directly connected to the roller extrusion device 3 through the fiber mat, and the roller extrusion device 3 is connected to the preforming mold system 4, the forming mold system 5, the traction dev...

Embodiment 2

[0062] a kind of like figure 1 The preparation method of the composite material sleeper of the present invention is shown, and the molding system used in the preparation method is the same as that in Example 1.

[0063] The preparation method of the present embodiment specifically comprises the following steps:

[0064] (1) yarn guide

[0065] The 4800Tex glass fiber roving and the 9600Tex glass fiber roving with a mass ratio of 9:1 are guided to the set working surface through a single group of creel 13 and yarn guiding device, and the running speed is controlled to 0.3m / min.

[0066] (2) Uniform impregnation

[0067] Mix the vinyl resin system evenly and inject it into the dipping tank of the dipping mechanism 2, wherein the vinyl resin system consists of 100 parts of vinyl resin, 0.17 parts of tert-butyl perbenzoate, 0.9 parts of peroxide, and 10 parts of flame retardant part, 0.8 part of internal release agent is mixed; in addition, 250 parts of continuous glass fiber a...

Embodiment 3

[0077] a kind of like figure 1 The preparation method of the composite material sleeper of the present invention is shown, and the molding system used in the preparation method is the same as that in Example 1.

[0078] The preparation method of the present embodiment specifically comprises the following steps:

[0079] (1) yarn guide

[0080] The 2400Tex glass fiber roving and the 19200Tex glass fiber roving with a mass ratio of 3:7 are guided to the set working surface through a single group of creel 13 and yarn guiding device, and the running speed is controlled to 0.1m / min.

[0081] (2) Uniform impregnation

[0082]Mix the vinyl resin system evenly and pour it into the dipping tank of the dipping mechanism 2, wherein the vinyl resin system consists of 100 parts of vinyl resin, 0.2 parts of tert-butyl perbenzoate, 1.0 parts of peroxide, and 13 parts of flame retardant Parts, 1.2 parts of internal release agent mixed; In addition, 230 parts of continuous glass fiber are p...

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Abstract

A preparation method of a composite material sleeper comprises the following steps that the surfaces and interiors of glass fiber twistless roving are conveyed into an impregnation resin system inside an impregnation tank through guiding; surfacing mats and the like are conveyed to a pair of roll extrusion devices, and are joined with the impregnated glass fiber twistless roving then the mixture enters a forming mould system through a performing mould system, the forming mould system is divided into multiple temperature control areas, a formed rough blank is conveyed out of the mould system through a draft gear, a hollow sleeper body with a lattice cavity is obtained, the rough blank passes through a cooling platform after demoulding and is cut to be of the required size through a cutting device, and then a hollow composite material sleeper body is obtained; and finally, upper end covers are fixedly installed and connected to the two ends of the sleeper body through adhesives and / or fasteners, and the composite material sleeper is obtained. The preparation method is simple in process step, high in process efficiency and low in cost, and composite material sleepers of specific hollow structures can be produced continuously and automatically.

Description

technical field [0001] The invention belongs to the field of molding preparation of railway engineering building components, and in particular relates to a preparation process of a sleeper. Background technique [0002] At present, the sleepers used in my country's railway line engineering are mainly wooden sleepers and concrete sleepers, but the concrete sleepers are inconvenient to install and replace due to their heavy weight, so they are usually used in special areas such as railway bridge decks and wooden switch sleepers. Use wooden sleepers. Wooden sleepers are low in cost, good in elasticity, simple in shape, easy to process, light in weight, easy to lay and replace, and have good insulation performance. However, there are fewer and fewer woods that meet the size requirements, and the wood is not corrosion-resistant, and usually needs anti-corrosion treatment, and the chemical substances produced during the treatment process are harmful to the environment. Neverthele...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C70/52B29C70/54
Inventor 吕文丽李再轲王甲世曾挚王虎黄河
Owner ZHUZHOU TIMES NEW MATERIALS TECH