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Rubber sizing material of screw stator sleeve of prestressed vacuum grouting pump and preparation method thereof

A screw stator, rubber compound technology, applied in the field of rubber vulcanization, can solve the problems of shadow bushing life, rubber block, bushing falling off, etc., to achieve good comprehensive performance, strong adhesion, aging resistance and other high performance Effect

Inactive Publication Date: 2012-07-18
HEFEI SHICHUAN ENG MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The stator rubber sleeve of the prestressed vacuum grouting pump is also a vulnerable part of the prestressed vacuum grouting pump. Its selection will directly affect the life of the bushing. Generally, the life of the stator rubber sleeve is 3-6 months under normal circumstances. If the wrong compound is selected, the bushing may fall off from the steel pipe or the rubber may fall off

Method used

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  • Rubber sizing material of screw stator sleeve of prestressed vacuum grouting pump and preparation method thereof
  • Rubber sizing material of screw stator sleeve of prestressed vacuum grouting pump and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0016] Example 1: A rubber compound for the screw stator cover of a prestressed vacuum grouting pump, the weight parts of which are composed of raw materials are: natural rubber 86, butyl rubber 0.6, silicone rubber VMQ 1.2, carboxylated nitrile rubber 5, methyl fluorosilicone Rubber 1.8, nano zinc oxide 3, magnesium oxide 0.5, stearic acid 0.4, sulfur 0.5, antioxidant RD 0.3, antioxidant MB 1.0, carbon black N550 9, accelerator NOBS 0.2, paraffin wax 3, anti-scorch agent CTP 0.2, large soybean oil6. .

[0017] The preparation method comprises the following steps:

[0018] (1) Plastic training: Start the internal mixer, put natural rubber, isoprene rubber, butadiene rubber, and styrene-butadiene rubber into the internal mixer for plastic training, and knead until several kinds of rubber are fully fused. When the temperature reaches 110- 125°C, start discharging, stop and cool for 23-25 ​​hours after discharging;

[0019] (2) Mixing: Add the above-mentioned cooled plastic ru...

Embodiment 2

[0021] Embodiment 2: The stator rubber sleeve produced by the prestressed vacuum grouting pump screw stator sleeve rubber compound of the present invention is compared with the ordinary stator rubber sleeve as shown in the following table

[0022]

[0023] Rubber product of the present invention and ordinary rubber product dynamic fatigue test performance contrast

[0024] Test conditions: Conditions: preload: 4900N, amplitude: ±3mm, frequency: 3Hz, at least 1.2 million times

[0025]

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PUM

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Abstract

The invention discloses a rubber sizing material of a screw stator sleeve of a prestressed vacuum grouting pump. The rubber sizing material comprises the following raw materials in part by weight: 85 to 90 parts of natural rubber, 0.5 to 0.7 part of butyl rubber, 1.1 to 1.3 parts of silicon rubber VMQ, 4 to 6 parts of carboxyl butadiene acrylonitrile rubber, 1.5 to 2.0 parts of methyl fluorinatedsilicon rubber, 2 to 4 parts of nano zinc oxide, 0.4 to 0.6 part of magnesium oxide, 0.3 to 0.5 part of stearic acid, 0.3 to 0.6 part of sulfur, 0.2 to 0.4 part of age resister RD, 0.5 to 1.5 parts of age resister MB, 8 to 12 parts of carbon black N550, 0.1 to 0.3 part of accelerator NOBS, 3 to 5 parts of paraffin, 0.2 to 0.3 part of scorch retarder CTP and 4 to 6 parts of soybean oil. In the preparing process, after part of formula raw materials are subjected to sizing material plasticization as required, other formula raw materials are added to carry out sizing material mixing and finally, a curing system is added to carry out mill run 5 to 7 times. The screw stator sleeve product of the vacuum grouting pump, which is produced according to the rubber formula, has excellent thermal agingresistance and tear resistance and also has excellent dynamic fatigue resistance.

Description

technical field [0001] The invention relates to the field of rubber vulcanization, in particular to a rubber compound for a screw stator cover of a prestressed vacuum grouting pump and a preparation method thereof. Background technique [0002] The stator rubber sleeve of the prestressed vacuum grouting pump is also a vulnerable part of the prestressed vacuum grouting pump. Its selection will directly affect the life of the bushing. Generally, the life of the stator rubber sleeve is 3-6 months under normal circumstances. If the wrong compound is selected, the bushing may fall off the steel pipe or the rubber may fall off. Therefore, we are required to conduct research on the formulation of rubber compounds. Contents of the invention [0003] The invention provides a rubber compound for a screw stator cover of a prestressed vacuum grouting pump and a preparation method thereof. The stator rubber cover produced by the rubber compound formula has good heat aging resistance, ...

Claims

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Application Information

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IPC IPC(8): C08L7/00C08L23/22C08L83/04C08L13/00C08L83/08C08K13/02C08K3/22C08K3/04C08K5/09C08J3/24B29B7/28B29B7/02
Inventor 张凯东王正宇朱焕章丁煜倩王从明王从永王从凯朱友武
Owner HEFEI SHICHUAN ENG MACHINERY
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