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Mould release agent for rubber

A release agent, rubber technology, applied in the field of rubber release agent, can solve the problems of large amount of particles or powder used, allergens, rubber products and mold pollution, etc., and achieve a good release effect

Active Publication Date: 2016-10-26
FENGHUA HUIHONG ORGANOSILICON CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the amount of particles or powder used is large, and it is easy to float in the air, which is easy to cause air pollution or become an allergen, and also cause certain pollution to rubber products and molds
Therefore, powder release agent is not an ideal release agent

Method used

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  • Mould release agent for rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A kind of rubber release agent that the present invention proposes, comprises the raw material of following weight part: polytetrafluoroethylene 130 parts, methyl silicone oil 30 parts, polyacrylamide 25 parts, fatty alcohol 15 parts, polyethylene glycol ether 22 parts, 100 parts of fatty alcohol ether sodium sulfate, 18 parts of n-butyl phthalate, 20 parts of sodium xylene sulfonate, 30 parts of mica powder, 15 parts of toluene, 7 parts of isomeric alcohol polyoxyethylene ether, 170 parts of deionized water, 20 parts of joint agent, 7 parts of catalyst.

[0019] Its preparation method comprises the following steps:

[0020] S1. Weigh polytetrafluoroethylene, methyl silicone oil, polyacrylamide, fatty alcohol, polyethylene glycol ether, and toluene according to the proportions. Mix the above raw materials and put them in a blender, and keep stirring at a temperature of 45°C 35min;

[0021] S2, weigh fatty alcohol ether sodium sulfate, n-butyl phthalate, sodium xylene ...

Embodiment 2

[0024] A kind of rubber release agent that the present invention proposes, comprises the raw material of following weight part: polytetrafluoroethylene 180 parts, methyl silicone oil 40 parts, polyacrylamide 30 parts, fatty alcohol 20 parts, polyethylene glycol ether 30 parts, 120 parts of fatty alcohol ether sodium sulfate, 24 parts of n-butyl phthalate, 23 parts of sodium xylene sulfonate, 35 parts of mica powder, 18 parts of toluene, 11 parts of isomeric alcohol polyoxyethylene ether, 230 parts of deionized water, 22 parts of joint agent, 10 parts of catalyst.

[0025] Its preparation method comprises the following steps:

[0026] S1. Weigh polytetrafluoroethylene, methyl silicone oil, polyacrylamide, fatty alcohol, polyethylene glycol ether, and toluene according to the ratio of parts. Mix the above raw materials and put them into a mixer, and keep stirring at a temperature of 60°C 45min;

[0027] S2, weigh fatty alcohol ether sodium sulfate, n-butyl phthalate, sodium xy...

Embodiment 3

[0030] A kind of rubber release agent that the present invention proposes, comprises the raw material of following weight part: polytetrafluoroethylene 190 parts, methyl silicone oil 55 parts, polyacrylamide 38 parts, fatty alcohol 29 parts, polyethylene glycol ether 37 parts, 140 parts of fatty alcohol ether sodium sulfate, 35 parts of n-butyl phthalate, 27 parts of sodium xylene sulfonate, 48 parts of mica powder, 23 parts of toluene, 14 parts of isomeric alcohol polyoxyethylene ether, 280 parts of deionized water, 28 parts of joint agent, 13 parts of catalyst.

[0031] Its preparation method comprises the following steps:

[0032] S1. Weigh polytetrafluoroethylene, methyl silicone oil, polyacrylamide, fatty alcohol, polyethylene glycol ether, and toluene according to the ratio of parts. Mix the above raw materials and put them into a mixer, and keep stirring at a temperature of 75°C 55min;

[0033] S2, weigh fatty alcohol ether sodium sulfate, n-butyl phthalate, sodium xy...

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Abstract

The invention discloses a mould release agent for rubber. The mould release agent for rubber comprises, by weight, 120-200 parts of Teflon, 25-60 parts of methyl silicone oil, 15-40 parts of polyacrylamide, 10-30 parts of fatty alcohol, 15-40 parts of polyglycol ether, 80-150 parts of alcohol ether sodium sulfate, 12-36 parts of tetrabutyl titanate, 16-28 parts of sodium xylene sulfonate, 20-50 parts of mica powder, 10-25 parts of methylbenzene, 5-15 parts of alcohol ethoxylate, 150-300 parts of deionized water, 15-30 parts of cross-linking agents and 5-15 parts of accelerant. The produced mould release agent for rubber is white emulsion with the PH value being 6.5-8, and can keep stability as long as six months; when the mould release agent is applied to mould release of a rubber product, a mould of the rubber product is coated with the mould release agent, and a firm and uniform isolation coating can be formed after vulcanization is completed, so that the mould becomes bright and smooth, and the mould release effect is good; and besides, the mould release agent for rubber can neither corrode nor stain the mould, and has the good water-based environmental-friendly performance and remarkable isolation effect.

Description

technical field [0001] The invention relates to the technical field of release agents, in particular to a rubber release agent. Background technique [0002] The release agent is a functional substance between the mold and the finished product. Mold release agents are chemically resistant and do not dissolve when in contact with the chemical composition of different resins (especially styrene and amines). The release 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 workpiece to be processed, and does not hinder painting or other secondary processing operations. Due to the rapid development of injection molding, extrusion, calendering, molding, lamination and other processes, the amount of release agent has also increased significantly. At present, powder release agents are used more. Powder release agents involve granules or powders, such as calcium carbonate, talcum powder, ...

Claims

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Application Information

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IPC IPC(8): B29C33/62
CPCB29C33/62
Inventor 孙立新
Owner FENGHUA HUIHONG ORGANOSILICON CHEM
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