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A kind of rubber for winding hydraulic hose and its production method

A rubber hose and rubber technology, which is applied in the rubber for winding hydraulic hose and its production field, can solve the problems of poor structural performance, insufficient anti-pulse and antistatic performance, and short service life, and achieve the effect of improving service life

Inactive Publication Date: 2011-12-07
LUOHE LETONE RUBBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the development of various industries, the market has higher and higher requirements for hydraulic hoses, and puts forward higher requirements for the pressure-bearing performance, anti-pulse performance and anti-static performance of the required hoses. The ordinary steel wire pipes currently on the market The pressure-bearing performance can pass the test, but the anti-pulse and anti-static performance are not enough
At present, due to the low adhesion of domestic hydraulic rubber hoses, the overall structural performance of the product is poor, and the service life is not long.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] A kind of rubber for winding hydraulic hose, raw material:

[0011] Nitrile rubber NBR 43kg, carbon black 45kg, plasticizer DOP 2kg, light magnesium oxide 1kg, antioxidant RD 0.5kg, sulfur 1.5kg, rubber adhesive A 5kg.

[0012] The production method of rubber for winding hydraulic hoses is to add nitrile rubber NBR into a closed rubber mixer, knead for 5 minutes at 90°C, then add carbon black, plasticizer DOP, light magnesium oxide, anti-aging RD and rubber adhesive, after mixing for 8 minutes, discharge the mixed rubber, put it on the open mill and pass the roller twice, cool down to 45°C, then add sulfur three packs and two rolls of thin pass, the roller distance is 0.4mm, Under the condition of 140°C, vulcanize for 35 minutes, and press out after the sheet is released.

Embodiment 2

[0014] A kind of rubber for winding hydraulic hose, raw material:

[0015] Nitrile rubber NBR 45kg, carbon black 48kg, plasticizer DOP 3kg, light magnesium oxide 5kg, antioxidant RD 1kg, sulfur 2kg, rubber adhesive RS 8kg.

[0016] The production method of rubber for winding hydraulic hoses is to add nitrile rubber NBR into a closed rubber mixer, knead for 6 minutes at 100°C, and then add carbon black, plasticizer DOP, light magnesium oxide, anti-aging RD and rubber adhesive, after mixing for 12 minutes, discharge the mixed rubber, put it on the open mill and pass the roller for 3 times, cool down to 55°C, then add sulfur three packs and two rolls of thin pass, the roller distance is 0.6mm, Under the condition of 145°C, vulcanize for 45 minutes, and press out after the sheet is released.

Embodiment 3

[0018] A kind of rubber for winding hydraulic hose, raw material:

[0019] Nitrile rubber NBR 44kg, carbon black 48kg, plasticizer DOP 2kg, light magnesium oxide 2kg, antioxidant RD 1kg, sulfur 1.5kg, rubber adhesive A 6kg.

[0020] The production method of rubber for winding hydraulic hoses is to add nitrile rubber NBR into a closed rubber mixer, knead for 6 minutes at 95°C, and then add carbon black, plasticizer DOP, light magnesium oxide, anti-aging RD and rubber adhesive, after mixing for 10 minutes, discharge the mixed rubber, put it on the open mill and pass it through the rollers for 3 times, cool down to 50°C, then add sulfur three packs and two rolls of thin pass, the roller distance is 0.5mm, Under the condition of 145°C, vulcanize for 40 minutes, and press out after the sheet is released.

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Abstract

The invention discloses a rubber for winding hydraulic rubber hose, which is composed of the following raw materials in parts by weight: nitrile rubber NBR 43-45, carbon black 45-48, plasticizer DOP 2-3, light magnesium oxide 1-3 5. Antiaging agent RD 0.5~1, sulfur 1.5~2, rubber adhesive 5~8. The tearing strength of the rubber used for winding hydraulic hoses of the present invention reaches 12.0MPa, the 100% constant elongation strength reaches 6MPa, and the adhesion force is greater than or equal to 170N. The vulcanization system with high acceleration and low sulfur has been adjusted, and the hose will not crack or penetrate for a long time. Improve the service life of the rubber hose under the pulse high pressure of high temperature hydraulic oil and open air environment.

Description

technical field [0001] The invention relates to a rubber, in particular to a rubber for winding a hydraulic rubber hose and a production method thereof. Background technique [0002] At present, the petroleum, chemical, coal, mining, and construction machinery industries all demand a large number of hydraulic transmission hoses. The hoses are widely welcomed because of their low noise, high transmission efficiency, and easy installation and use. Due to the development of various industries, the market has higher and higher requirements for hydraulic hoses, and puts forward higher requirements for the pressure-bearing performance, anti-pulse performance and anti-static performance of the required hoses. The ordinary steel wire pipes currently on the market The pressure-bearing performance can pass, but the anti-pulse and anti-static performance are not enough. At present, due to the low adhesion of domestic hydraulic rubber hoses, the overall structural performance of the pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/02C08K13/02C08K3/04C08K3/22C08K3/06
Inventor 赵洪亮钟伟江
Owner LUOHE LETONE RUBBER
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