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Heat-resistant release agent for brake shoe manufacturing and preparation method

A release agent and heat-resistant technology, applied in manufacturing tools, casting equipment, metal processing equipment, etc., can solve the problems of reducing the processing efficiency of the brake shoe, poor high temperature resistance, affecting the release of the brake shoe, etc. Strength and weather resistance, high heat resistance, effect of improving lubricating effect

Inactive Publication Date: 2021-02-23
CHONGQING YUHONG RAIL CAR ACCESSORIES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Due to the high temperature during the die-casting of brake shoes, the existing release agent has poor high temperature resistance. processing efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1, the present invention provides a technical solution: a heat-resistant mold release agent for brake shoe manufacturing, comprising the following components in parts by weight:

[0027] 11 parts of epoxidized soybean oil;

[0028] 6 parts of glyceryl trioleate;

[0029] 6 parts of stearic acid;

[0030] 4 parts paraffin;

[0031] 13 parts of seaweed extract;

[0032] 12 parts of anionic surfactant;

[0033] 4 parts of fatty acid glyceride;

[0034] 43 parts of soapy water.

[0035] Among them, replacing engine oil with epoxidized soybean oil not only reduces pollution, but also improves the thermal stability of the release agent, while improving the mechanical strength and weather resistance of the release agent.

[0036] Wherein, glyceryl trioleate has a higher lubricating effect, and glyceryl trioleate is added to the release agent to improve the lubricity of the release agent.

[0037] Wherein, stearic acid is mainly used as a release agent, a stab...

Embodiment 2

[0047] Embodiment 2, the present invention provides a technical solution: a heat-resistant mold release agent for brake shoe manufacturing, comprising the following components in parts by weight:

[0048] 11 parts of epoxidized soybean oil;

[0049] 6 parts of glyceryl trioleate;

[0050] 6 parts of stearic acid;

[0051] 4 parts paraffin;

[0052] 14 parts of seaweed extract;

[0053] 12 parts of anionic surfactant;

[0054] 4 parts of fatty acid glyceride;

[0055] 43 parts of soapy water.

[0056] A preparation method of a heat-resistant release agent for brake shoe manufacture, comprising the following steps:

[0057] S1, weigh epoxy soybean oil, glyceryl trioleate, stearic acid and fatty acid glyceride respectively by weight by electronic scale, then take the epoxy soybean oil after weighing, glyceryl trioleate, stearic acid and Add fatty acid glycerides into the reaction kettle in turn, adjust the temperature of the reaction kettle to 75°C-85°C, stir through the r...

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PUM

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Abstract

The invention discloses a heat-resistant release agent for brake shoe manufacturing. The heat-resistant release agent comprises the following components in parts by weight: 10-12 parts of epoxidized soybean oil, 5-7 parts of glyceryl trioleate, 5-7 parts of stearic acid, 4-6 parts of paraffin, 13-15 parts of a seaweed extracting solution, 10-12 parts of an anionic surfactant, 3-5 parts of fatty glyceride, 40-45 parts of soapy water, Through scientific and reasonable proportioning, the epoxidized soybean oil, the glyceryl trioleate, the stearic acid, the paraffin, the seaweed extracting solution, the anionic surfactant and the fatty glyceride are uniformly mixed into soapy water to prepare the heat-resistant release agent; the release agent has relatively high heat resistance; and in the brake shoe die-casting process, the release agent is prevented from losing efficacy under the high-temperature condition, so that the release agent still has a good release performance under the high-temperature effect, and the brake shoe release is facilitated.

Description

technical field [0001] The invention relates to the technical field of release agents, in particular to a heat-resistant release agent for brake shoe manufacture and a preparation method thereof. Background technique [0002] The release agent is a functional substance between the mold and the finished product; the release agent is chemically resistant and will not be dissolved when in contact with the chemical components of different resins (especially styrene and amines); the release agent The agent also has heat and stress resistance, and is not easy to decompose or wear; the release agent adheres to the mold and does not transfer to the processed parts, and does not hinder painting or other secondary processing operations; due to injection molding, extrusion, calendering With the rapid development of processes such as molding, lamination, etc., the amount of release agent has also increased significantly. [0003] Release agent is an interface coating used on the surfac...

Claims

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Application Information

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IPC IPC(8): B22C3/00
CPCB22C3/00
Inventor 邱华任昭红李文轩任万君夏子超
Owner CHONGQING YUHONG RAIL CAR ACCESSORIES CO LTD
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