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Oil resisting and low temperature of -55 DEG C resisting glue for wire spirally-wound hose and preparation method thereof

A technology of wire winding and low temperature resistance, applied in the direction of hoses, pipes, mechanical equipment, etc., can solve the problems of low temperature elastic loss, strict performance requirements, insufficient performance, etc., and achieve the effect of low cost and easy acquisition.

Inactive Publication Date: 2013-12-25
LUOHE LETONE RUBBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the traditional cold-resistant and oil-resistant elastomers use nitrile rubber with low acrylonitrile content, which has good low-temperature performance and excellent oil resistance, as the main material. The cold-resistant performance takes nitrile-18 as an example, and the compression cold resistance coefficient at -55°C is About 0.1, indicating that the low-temperature elasticity of the vulcanized rubber usually loses about 90% in a cold environment of 55°C, and the sealing performance has been seriously lost
With the rapid development of science and technology, more stringent performance requirements are put forward for this type of elastomer, and the existing traditional rubber materials can no longer meet the performance requirements put forward by industry, agriculture and military industries.
The low temperature resistance of oil-resistant rubber is usually achieved by adding a large amount of cold-resistant plasticizer and increasing the rubber content of the rubber, which greatly limits the hardness of the rubber (Shore A hardness is about 50), and in actual production There is a clear lack of performance in the

Method used

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  • Oil resisting and low temperature of -55 DEG C resisting glue for wire spirally-wound hose and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Example 1: A method for preparing an oil-resistant and low-temperature-resistant steel wire wound rubber hose at -55°C, comprising the following steps:

[0013] A method for preparing an oil-resistant and low-temperature resistant-55°C steel wire wound rubber hose, comprising the following steps:

[0014] a Weigh each raw material by weight, the raw materials are as follows: nitrile rubber NBR 1965: 12kg, nitrile rubber NBR2840: 24kg, carbon black 46kg, white carbon black: 7kg, plasticizer TP-95: 2kg, plasticizer DOS : 4kg, zinc oxide 2kg, antioxidant 4010NA: 0.4kg, antioxidant BLE: 0.4kg, sulfur: 0.5kg; DTDM: 0.6kg; CBS: 0.4kg.

[0015] b. Put two kinds of nitrile rubber into the internal mixer and knead for 50 seconds, then add zinc oxide, anti-aging agent, carbon black, white carbon black and plasticizer and knead for 80 seconds. Tablets are pressed on the mill, parked for 12 hours, then filtered through a filter with 40 mesh screens, parked to cool, add vulcanizing...

Embodiment 2

[0016] Example 2: A method for preparing an oil-resistant and low-temperature-resistant steel wire wound rubber hose at -55°C, comprising the following steps:

[0017] A method for preparing an oil-resistant and low-temperature resistant-55°C steel wire wound rubber hose, comprising the following steps:

[0018] aWeigh each raw material by weight, the raw materials are as follows: nitrile rubber NBR 1965 10kg, nitrile rubber NBR2840 23kg, carbon black 46kg, white carbon black: 5.5kg, plasticizer TP-95: 4.5kg, zinc oxide 1.2kg , antioxidant RD: 0.6kg, sulfur: 1.5kg;

[0019] b. Put the two kinds of nitrile rubber into the internal mixer and mix for 42 seconds, then add zinc oxide, anti-aging agent, carbon black, white carbon black and plasticizer and mix for 72 seconds, and the temperature reaches 100℃-120℃ for debinding Finally, it is pressed into tablets on the rolling machine, parked for 11 hours, then filtered through a filter with a 36-mesh filter, parked and cooled, then...

Embodiment 3

[0020] Example 3: A method for preparing an oil-resistant and low-temperature-resistant steel wire wound rubber hose at -55°C, comprising the following steps:

[0021] A method for preparing an oil-resistant and low-temperature resistant-55°C steel wire wound rubber hose, comprising the following steps:

[0022] a Take each raw material by weight, and the raw materials are as follows: nitrile rubber NBR 1965: 10kg, nitrile rubber NBR2840: 24kg, carbon black 47kg, white carbon black: 6kg, plasticizer DOS: 4kg, zinc oxide 1kg, antioxidant BLE: 0.5kg, CBS: 1.3kg.

[0023] b. Put two kinds of nitrile rubber into the internal mixer and knead for 41 seconds, then add zinc oxide, anti-aging agent, carbon black, white carbon black and plasticizer and knead for 71 seconds. Tablets are pressed on the mill, parked for 11 hours, then filtered through a filter with a 37-mesh filter, parked to cool, add vulcanizing agent on the mill, and then press out, and the semi-finished product is vul...

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Abstract

Provided are oil resisting and low temperature of -55 DEG C resisting glue for a wire spirally-wound hose and a preparation method of the oil resisting and low temperature of -55 DEG C resisting glue. The glue for the hose comprises, by weight part, 10-15 parts of butadiene-acrylonitrile rubber NBR1965, 23-25 parts of butadiene-acrylonitrile rubber NBR2840, 45-48 parts of carbon black, 5-10 parts of white carbon black, 4-6 parts of plasticizer, 1-3 parts of zinc oxide, 0.5-1 part of anti-aging agent and 1.3-2 parts of rubber vulcanizer. The preparation method comprises the following steps that the two kinds of butadiene-acrylonitrile rubber are put in an internal mixer for mixing for 40-60 seconds, then the zinc oxide, the anti-aging agent, the carbon black, the whiter carbon black and the plasticizer are added for mixing for 70-90 seconds, tabletting is carried out on an open mill after temperature reaches 100 DEG C-200 DEG C and glue discharging is carried out, standing is carried out for 10-14 hours, then a filter with a filter screen of 35-45 meshes is used for filtration, the rubber vulcanizer is added to the open mill after standing and cooling are carried out, then extrusion is carried out, and a semi-finished product is vulcanized at 145-151 DEG C for 50-70 seconds to be formed. The glue is flexible and is not cracked at -55 DEG C, the processing process is simple, and the operation is easy.

Description

technical field [0001] The invention relates to a rubber hose, in particular to a rubber hose suitable for 208°C hot steam, and also to a preparation method of the rubber hose. Background technique [0002] Commonly used steel wire wound hydraulic hoses generally use a temperature range of -40°C-100°C, but in special areas such as Russia and other low-temperature areas, the winter temperature is basically around -50, and the rubber that can reach a low temperature of -55°C is commonly used. BR, EPDM , but the medium conveyed by the winding pipe is oil. Non-polar rubbers such as BR and EPDM are not oil-resistant, while oil-resistant nitrile rubber has a glass transition temperature of -40°C. In order to meet the requirements of oil resistance and low temperature resistance, a compound rubber with a low temperature resistance of -55 degrees Celsius was studied. [0003] For a long time, oil-resistant elastomers have had the problem of balancing cold resistance and oil resista...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/02C08K13/02C08K3/04C08K3/36C08K3/22F16L11/04
Inventor 杨继周
Owner LUOHE LETONE RUBBER