CN102532617B - Prestressed vacuum grouting pump screw stator sleeve rubber compound and preparation method thereof - Google Patents
Prestressed vacuum grouting pump screw stator sleeve rubber compound and preparation method thereof Download PDFInfo
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- CN102532617B CN102532617B CN 201110457395 CN201110457395A CN102532617B CN 102532617 B CN102532617 B CN 102532617B CN 201110457395 CN201110457395 CN 201110457395 CN 201110457395 A CN201110457395 A CN 201110457395A CN 102532617 B CN102532617 B CN 102532617B
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Abstract
The invention discloses a prestressed vacuum grouting pump screw stator sleeve rubber compound, which comprises the following constitutional raw materials in parts by weight: 85-90 parts of natural rubber, 0.5-0.7 parts of butyl rubber, 1.1-1.3 parts of silicon rubber VMQ, 4-6 parts of carboxyl nitrile rubber, 1.5-2.0 parts of methyl fluorosilicone rubber, 2-4 parts of zinc oxide, 0.4-0.6 parts of magnesium oxide, 0.3-0.5 parts of stearic acid, 0.3-0.6 parts of sulfur, 0.2-0.4 parts of anti-aging agent DPPD (Diphenyl-Phenylene-Diamine), 8-12 parts of carbon black N339, 0.1-0.3 parts of accelerant NOBS, 3-5 parts of paraffin, 0.2-0.3 parts of anti-scorching agent CTP and 4-6 parts of soybean oil. During preparation, a part of formula raw materials are subjected to compound plasticization according to requirements, then other formula materials are added to perform compound mixing, and finally a vulcanization system is added to perform mill run for 5-7 times. A prestressed vacuum grouting pump screw stator sleeve product produced by the rubber formula has excellent heat resistant aging performance and superior tear resistance performance and also has superior dynamic fatigue resistance performance.
Description
Technical field
The present invention relates to vulcanization of rubber field, be specifically related to a kind of prestress vacuum grouting pump screw rod stator cover rubber size and preparation method thereof.
Background technology
Prestress vacuum grouting pump stator rubber coating, it also is consumable accessory in the prestress vacuum grouting pump, its selection quality, the life-span of direct shadow lining, the life-span of stator rubber cover is 3-6 month under the general normal circumstances, if select for use formulated rubber material improper, lining may come off from steel pipe or rubber falls piece.So require us that the rubber size prescription is studied.
Summary of the invention
The invention provides a kind of prestress vacuum grouting pump screw rod stator cover rubber size and preparation method thereof, the stator rubber cover that this rubber size prescription is produced has good heat-resistant aging, resistance to tearing, anti-simultaneously dynamic fatigue property excellence.
The present invention adopts following technical scheme to achieve these goals:
A kind of prestress vacuum grouting pump screw rod stator cover rubber size is characterized in that the weight part of its constitutive material is: natural rubber 85-90, isoprene-isobutylene rubber 0.5-0.7, silicon rubber VMQ 1.1-1.3, carboxyl nitrile rubber 4-6, methylfluorosilicone rubber 1.5-2.0, zinc oxide 2-4, magnesium oxide 0.4-0.6, stearic acid 0.3-0.5, sulphur 0.3-0.6, antioxidant DPPD 0.2-0.4, carbon black N3398-12, accelerant N OBS 0.1-0.3, paraffin 3-5, anti-scorching agent CTP 0.2-0.3, soybean oil 4-6.
Described prestress vacuum grouting pump screw rod stator cover rubber size is characterized in that the weight part of its constitutive material is: natural rubber 86, isoprene-isobutylene rubber 0.6, silicon rubber VMQ 1.2, carboxyl nitrile rubber 5, methylfluorosilicone rubber 1.8, zinc oxide 3, magnesium oxide 0.5, stearic acid 0.4, sulphur 0.5, antioxidant DPPD 0.3, carbon black N3399, accelerant N OBS 0.2, paraffin 3, anti-scorching agent CTP 0.2, soybean oil 6.
The preparation method of prestress vacuum grouting pump screw rod stator cover rubber size may further comprise the steps:
(1) moulds white silk: start Banbury mixer, with natural rubber, isoprene-isobutylene rubber, silicon rubber VMQ, carboxyl nitrile rubber, methylfluorosilicone rubber, several rubber drop in the Banbury mixer and mould white silk, turn refining to several rubber and fully merge, when temperature reaches 110-125 ℃, the beginning discharge is parked cooling 23-25 hour behind the discharge;
(2) mixing: that above-mentioned cooled broken-(down)rubber is joined in the Banbury mixer, add zinc oxide, magnesium oxide, stearic acid, anti-aging agent class material again, after mixing 2-3 minute, again carbon black is added at twice wherein mixing, it is mixing to add 2/3 carbon black earlier, adds residue 1/3 carbon black again, turns refining about 8-15 minute, add the abundant mixing 5-6 of soybean oil minute again, parked 18-22 hour after then rubber unvulcanizate being emitted;
(3) add vulcanization system: sulphur, promotor, the scorch retarder of formula rate are joined in the rubber unvulcanizate that parks, and thin-pass 5-7 is all over getting final product.
Beneficial effect of the present invention:
In the prescription based on natural rubber, having added multiple rubber phase such as silicon rubber, methylfluorosilicone rubber mixes, the advantage that has kept natural rubber, remedied the natural rubber deficiency simultaneously, the rubber size of gained promptly has the good premium properties of good springiness, tear strength of natural rubber, simultaneously wear resistance height, erosion resistance are strong, ageing-resistant characteristics and conventional vulcanization system combine, and have improved the flex fatig resistance and the dynamic fatigue property of cross-linked rubber.
Rubber unvulcanizate of the present invention can substitute the elastomer stator cover product that requires 45 degree (Shao Shi) natural rubbers; Can superelevation 30～150% at the sizing material aging resistance that the analogous products colleague uses.Concrete advantage is:
1, aterrimus sizing material, the rubber unvulcanizate good fluidity is easy to sulfuration processing, the qualification rate height;
2, have good comprehensive performances, strong with metal bonding; Mechanical property, fatigue property, performance such as ageing-resistant are all higher, are fit to produce wear resisting property, ageing resistance are required than higher pre-stress construction vacuum grouting pump stator rubber coating product.
Embodiment
Embodiment 1: a kind of prestress vacuum grouting pump screw rod stator cover rubber size, the weight part of its constitutive material is: natural rubber 85-90, isoprene-isobutylene rubber 0.5-0.7, silicon rubber VMQ 1.1-1.3, carboxyl nitrile rubber 4-6, methylfluorosilicone rubber 1.5-2.0, zinc oxide 2-4, magnesium oxide 0.4-0.6, stearic acid 0.3-0.5, sulphur 0.3-0.6, antioxidant DPPD 0.2-0.4, carbon black N3398-12, accelerant N OBS 0.1-0.3, paraffin 3-5, anti-scorching agent CTP 0.2-0.3, soybean oil 4-6.
The preparation method may further comprise the steps:
(1) moulds white silk: start Banbury mixer, will natural rubber, polyisoprene rubber, divinyl rubber, styrene-butadiene rubber(SBR) drop in the Banbury mixer and mould white silk, turn refining to several rubber fully to merge, when temperature reaches 110-125 ℃, the beginning discharge is parked cooling 23-25 hour behind the discharge;
(2) mixing: that above-mentioned cooled broken-(down)rubber is joined in the Banbury mixer, add zinc oxide, stearic acid, anti-aging agent class material again, after mixing 2-3 minute, again carbon black is added at twice wherein mixing, it is mixing to add 2/3 carbon black earlier, adds residue 1/3 carbon black again, turns refining about 8-15 minute, add the abundant mixing 5-6 of soybean oil minute again, parked 18-22 hour after then rubber unvulcanizate being emitted;
(3) add vulcanization system: sulphur, promotor, the scorch retarder of formula rate are joined in the rubber unvulcanizate that parks, and thin-pass 5-7 is all over getting final product.
Embodiment 2: the stator rubber cover of producing with a kind of prestress vacuum grouting pump screw rod stator cover rubber size of the present invention overlaps contrast as following table with common stator rubber
Rubber product of the present invention and General Purpose Rubber product dynamic fatigue test performance comparison
Test conditions: condition: give and carrying: 4900N, amplitude: ± 3mm, minimum 1,200,000 times of frequency: 3Hz
Claims (3)
1. a prestress vacuum grouting pump screw rod stator cover rubber size is characterized in that the weight part of its constitutive material is: natural rubber 85-90, isoprene-isobutylene rubber 0.5-0.7, silicon rubber VMQ 1.1-1.3, carboxy nitrile rubber 4-6, methylfluorosilicone rubber 1.5-2.0, zinc oxide 2-4, magnesium oxide 0.4-0.6, stearic acid 0.3-0.5, sulphur 0.3-0.6, antioxidant DPPD 0.2-0.4, carbon black N339 8-12, accelerant N OBS 0.1-0.3, paraffin 3-5, anti-scorching agent CTP 0.2-0.3, soybean oil 4-6.
2. prestress vacuum grouting pump screw rod stator cover rubber size according to claim 1 is characterized in that the weight part of its constitutive material is: natural rubber 86, isoprene-isobutylene rubber 0.6, silicon rubber VMQ 1.2, carboxy nitrile rubber 5, methylfluorosilicone rubber 1.8, zinc oxide 3, magnesium oxide 0.5, stearic acid 0.4, sulphur 0.5, antioxidant DPPD 0.3, carbon black N339 9, accelerant N OBS 0.2, paraffin 3, anti-scorching agent CTP 0.2, soybean oil 6.
3. the preparation method of a kind of prestress vacuum grouting pump screw rod stator cover rubber size as claimed in claim 1 is characterized in that may further comprise the steps:
(1) moulds white silk: start Banbury mixer, with natural rubber, isoprene-isobutylene rubber, silicon rubber VMQ, carboxy nitrile rubber, methylfluorosilicone rubber, several rubber drop in the Banbury mixer and mould white silk, turn refining to several rubber and fully merge, when temperature reaches 110-125 ℃, the beginning discharge is parked cooling 23-25 hour behind the discharge;
(2) mixing: that above-mentioned cooled broken-(down)rubber is joined in the Banbury mixer, add zinc oxide, magnesium oxide, stearic acid, anti-aging agent class material again, after mixing 2-3 minute, again carbon black is added at twice wherein mixing, it is mixing to add 2/3 carbon black earlier, adds residue 1/3 carbon black again, turns refining about 8-15 minutes, add the abundant mixing 5-6 of soybean oil minute again, parked 18-22 hour after then rubber unvulcanizate being emitted;
(3) add vulcanization system: sulphur, promotor, the scorch retarder of formula rate are joined in the rubber unvulcanizate that parks, and thin-pass 5-7 is all over getting final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110457395 CN102532617B (en) | 2011-12-30 | 2011-12-30 | Prestressed vacuum grouting pump screw stator sleeve rubber compound and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110457395 CN102532617B (en) | 2011-12-30 | 2011-12-30 | Prestressed vacuum grouting pump screw stator sleeve rubber compound and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN102532617A CN102532617A (en) | 2012-07-04 |
| CN102532617B true CN102532617B (en) | 2013-07-31 |
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| CN 201110457395 Expired - Fee Related CN102532617B (en) | 2011-12-30 | 2011-12-30 | Prestressed vacuum grouting pump screw stator sleeve rubber compound and preparation method thereof |
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| CN106762610A (en) * | 2016-11-16 | 2017-05-31 | 哈尔滨天顺化工科技开发有限公司 | A kind of screw pump stator for making polyacrylonitrile matrix |
| CN110092956A (en) * | 2019-04-09 | 2019-08-06 | 兴化市戴窑镇永生橡胶制品厂 | A kind of antibacterial abrasive rubber and preparation method thereof |
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| US6753374B1 (en) * | 2000-06-08 | 2004-06-22 | Uniroyal Chemical Company, Inc. | Rubber compositions and method for increasing the Mooney Scorch value |
| CN100577722C (en) * | 2007-10-31 | 2010-01-06 | 上海矿用电缆厂 | High-strength cold hardiness cable sheath rubber and technique of preparing the same |
| CN101580606B (en) * | 2009-06-08 | 2011-08-31 | 无锡市华美电缆有限公司 | Cable jacket rubber and preparation method |
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