Dipping liquid used for dipping glass fiber twistless roving at external layer of steel rail polishing grinding wheel, and its preparation method

A technology of glass fiber and roving, which is applied in grinding/polishing equipment, grinding devices, manufacturing tools, etc. It can solve the problems of grinding wheel breakage, low dipping amount, shedding, etc., and achieve enhanced strength, good wettability, The effect of prolonging the service life

Inactive Publication Date: 2012-10-24
江苏新砺河磨具科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The impregnating liquid in the prior art has the following two defects: on the one hand, the degree of cohesion of the impregnating liquid is not high, resulting in the roving not being firmly bonded to each other. Usually, in the second half of the service life of the grinding wheel, the outer circumference of the grinding wheel The unconsumed glass fiber winding layer on the surface will fall off partly or entirely, that is, the possibility of grinding wheel rupture still exists
On the other hand, the impregnation amount of glass fiber roving is usually low during im

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0015] Example 1

[0016] A method for preparing an immersion liquid for dipping an outer layer glass fiber roving of a rail grinding wheel. The preparation steps are as follows: 40 parts by mass of PF2127 liquid phenolic resin, 19.5 parts by mass of PF2123 novolak resin powder , 40 parts by mass of industrial alcohol (the mass percentage concentration is 75%) and 0.4 part by mass of γ-ethylenediaminopropyltrimethoxysilane were stirred in a stirrer for 2.5 hours at room temperature, and the stirring speed was 200 rev / min, the impregnating liquid can be prepared.

Example Embodiment

[0017] Example 2

[0018] A method for preparing an immersion liquid for dipping an outer layer glass fiber roving of a rail grinding wheel, the preparation steps are as follows: 38 parts by mass of PF2127 liquid phenolic resin, 22 parts by mass of PF2123 novolak resin powder , 45 parts by mass of industrial alcohol (the mass percentage concentration is 75%) and 0.3 part by mass of γ-ethylenediaminopropyltrimethoxysilane were stirred in a stirrer for 2 hours at room temperature, and the stirring speed was 170 rev / min, the impregnating liquid can be prepared.

Example Embodiment

[0019] Example 3

[0020] A method for preparing an immersion liquid for dipping an outer layer glass fiber roving of a steel rail grinding wheel. , 35 parts by mass of industrial alcohol (the mass percentage concentration is 75%) and 0.5 part by mass of γ-ethylenediaminopropyltrimethoxysilane were stirred in a stirrer for 3 hours at room temperature, and the stirring speed was 220 rev / min, the impregnating liquid can be prepared.

[0021] The technical performance index that the dipping solution prepared by the method of the present invention can reach through the test is as follows:

[0022] The glass fiber roving is passed through the impregnating liquid prepared by the present invention at a speed of 0.5-0.8 m / s. The time for the impregnation liquid to penetrate into the roving does not exceed 2 seconds, and the glass fiber roving is completely wetted. Untwisted roving with full immersion liquid is evenly wound on the outer circumference of the grinding wheel body with a...

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PUM

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Abstract

The invention discloses a dipping liquid used for dipping a glass fiber twistless roving at the external layer of a steel rail polishing grinding wheel, and its preparation method. The dipping liquid has a very high bonding ability and has a high wettability to the glass fiber twistless roving, so the glass fiber twistless roving enables a winding layer to be firmly bonded with the body of the grinding wheel when the glass fiber twistless roving subjected to the dipping in the dipping liquid is wound on the outer circumferential surface of the grinding wheel body, the winding layer does not shred after long-term use, the strength of the grinding wheel is substantially enhanced, and the winding layer can protect the grinding wheel body during the whole service life period, thereby the service life of the grinding wheel is prolonged.

Description

technical field [0001] The invention relates to an impregnating liquid and a preparation method thereof, in particular to an impregnating liquid for impregnating the outer glass fiber roving of a rail grinding wheel and a preparation method thereof. Background technique [0002] The rail grinding wheel is a special grinding wheel that uses the end face of the grinding wheel to grind the surface of the rail. Due to the instability of grinding conditions, in order to prevent the grinding wheel from being broken due to grinding impact, a glass fiber winding layer is often added to the outer circumference of the grinding wheel. In the prior art, epoxy resin is often dissolved in acetone or toluene solvent to make impregnating resin, and then the impregnating resin is applied layer by layer when winding glass fiber roving, so as to combine the entire glass fiber winding layer. The impregnating liquid in the prior art has the following two defects: on the one hand, the degree of ...

Claims

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Application Information

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IPC IPC(8): C08L61/06C08K13/04C08K7/14C08K5/544C08J5/24B24D18/00
Inventor 仲怀民
Owner 江苏新砺河磨具科技有限公司
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