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Rubber material for stator rubber sleeve of prestressed vacuum grout pump and preparation method thereof

A pump stator and prestressing technology, which is applied in the field of rubber vulcanization, can solve problems such as rubber falling off, affecting the life of the bushing, and bushing falling off, and achieves strong adhesion, good comprehensive performance, and high performance such as aging resistance.

Inactive Publication Date: 2012-07-11
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 material for stator rubber sleeve of prestressed vacuum grout pump and preparation method thereof
  • Rubber material for stator rubber sleeve of prestressed vacuum grout pump and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Example 1: Prestressed vacuum grouting pump stator rubber sleeve compound, the weight parts of its constituent materials are: natural rubber 86, butyl rubber 0.6, silicone rubber PMQ 1.2, carboxyl nitrile rubber 5, methyl fluorosilicone rubber 1.8, Zinc oxide 3, stearic acid 0.4, sulfur 0.5, antioxidant DPPD 0.3, carbon black N3399, accelerator M 0.2, rhine wax 3, scorch inhibitor CTP 0.2, cottonseed oil 6.

[0017] The preparation method of prestressed vacuum grouting pump stator rubber sleeve compound includes the following steps:

[0018] (1) Plasticizing: start the internal mixer, put natural rubber, isoprene rubber, butadiene rubber, and styrene-butadiene rubber into the internal mixer for plasticizing, and then mix until several rubbers are fully fused. When the temperature reaches 110- 125℃, start discharging, after discharging, stop and cool for 23-25 ​​hours;

[0019] (2) Mixing: Add the cooled plasticized rubber to the internal mixer, then add zinc oxide, stearic ac...

Embodiment 2

[0021] Example 2: The comparison between the stator rubber sleeve produced by the prestressed vacuum grouting pump stator rubber sleeve compound of the present invention and the ordinary stator rubber sleeve is shown in the following table

[0022]

[0023] Comparison of dynamic fatigue test performance between rubber product of the invention and ordinary rubber product

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

[0025]

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Abstract

The invention discloses a rubber material for a stator rubber sleeve of a prestressed vacuum grout pump. The rubber material comprises the following raw materials in parts by weight: 95-105 parts of natural rubber, 4-6 parts of isoprene rubber, 0.04-0.06 part of butadiene rubber, 1.1-1.3 parts of styrene butadiene rubber, 2-4 parts of zinc oxide, 0.3-0.5 part of stearic acid, 0.3-0.6 part of sulfur, 0.2-0.4 part of antioxidant DPPD, 8-12 parts of carbon black N339, 0.1-0.3 part of accelerator M, 3-5 parts of Rhine wax, 0.2-0.3 part of scorch retarder CTP and 4-6 parts of cottonseed oil. A preparation method comprises the following steps: firstly plasticating a part of raw materials in the formula as required, then adding the other materials for carrying out mixing of rubber material and finally adding a vulcanization system and carrying out thin-passing 5-7 times. The rubber damping products produced according to the rubber formula have good heat aging resistance, excellent tear resistance and excellent dynamic fatigue resistance.

Description

Technical field [0001] The invention relates to the field of rubber vulcanization, in particular to a prestressed vacuum grouting pump stator rubber sleeve rubber material and a preparation method thereof. Background technique [0002] The stator rubber sleeve of the pre-stressed vacuum grouting pump is also a vulnerable part in the pre-stressed vacuum grouting pump. Its choice directly affects the life of the bushing. Under normal circumstances, the life of the stator rubber sleeve is 3-6 months. If you choose improperly formulated rubber, the bushing may fall off the steel pipe or the rubber may fall off. Therefore, we are required to study the rubber compound formula. Summary of the invention [0003] The invention provides a prestressed vacuum grouting pump stator rubber sleeve compound and a preparation method thereof. The stator rubber sleeve produced by the rubber compound formula has good heat aging resistance, tear resistance, and dynamic fatigue resistance. Excellent. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/00C08L83/04C08L23/22C08L13/00C08L83/08C08K13/02C08K3/04C08K3/22C08K5/09C08J3/24
Inventor 张朝根王从明张凯东王从凯朱友武王正宇朱焕章丁煜倩
Owner HEFEI SHICHUAN ENG MACHINERY
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