Rubber oil pipe with efficient heat protection structure and preparation method of rubber oil pipe

A technology of thermal protection structure and rubber inner tube, which is applied in the direction of thermal insulation protection of pipelines, rubber layered products, chemical instruments and methods, etc. , Unable to meet the requirements of the use environment, etc., to achieve the effect of low cost, improved life, and improved temperature resistance

Inactive Publication Date: 2015-04-29
HEBEI SIBERIA SPECIAL RUBBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But it can't solve the actual application requirements very well. The main reason is that it can't solve the problem fundamentally from the basic principles of heat transfer. Most of the heat will continue to pass through the protective layer on the surface and transfer to the surface of the rubber material, so that the temperature resistance of the rubber tube can not be significantly improved, and it can no longer meet the requirements of the actual use environment.

Method used

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  • Rubber oil pipe with efficient heat protection structure and preparation method of rubber oil pipe
  • Rubber oil pipe with efficient heat protection structure and preparation method of rubber oil pipe
  • Rubber oil pipe with efficient heat protection structure and preparation method of rubber oil pipe

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preparation example Construction

[0024] The invention provides a rubber oil pipe with a high-efficiency thermal protection structure and a preparation method thereof, the preparation method comprising the following steps:

[0025] The first step is the preparation of the rubber inner tube.

[0026] The rubber inner tube is prepared by an open mill, an extruder and a winding machine. The rubber inner tube is divided into an inner rubber layer, a reinforcing layer and an outer rubber layer, wherein the inner rubber layer is a rubber with oil resistance, including nitrile rubber (resistant to temperature less than 125°C), acrylate rubber (temperature resistance 150-200°C), fluororubber (temperature resistance 200-250°C), chlorohydrin rubber (temperature resistance 100-150°C), silicone rubber (temperature resistance 250-300°C ) in one or more; the reinforcing layer is braided fabric, including one or more of carbon fiber, glass fiber, basalt fiber, aramid fiber, and metal wire; the outer rubber layer is a rubber ...

Embodiment 1

[0036] Adopt the method provided by the invention to prepare the rubber oil pipe with efficient thermal protection structure, specifically as follows:

[0037]The first step is to prepare the rubber inner tube. Select the rubber material of the inner rubber layer and the outer rubber layer, knead on the open mill and add relevant additives, and set aside. To produce rubber tubing with an inner diameter of 10±0.5mm and a wall thickness of 10.5±0.5mm (the thickness of the fluororubber inner layer is 7mm, the thickness of the reinforcement layer is 0.5mm, and the thickness of the epichlorohydrin rubber outer layer is 3mm), the method steps are as follows:

[0038] (1) The fluororubber inner rubber layer is extruded through the extruder, and the extrusion temperature is 70°C, 60°C, 60°C, 60°C from the machine head to the screw;

[0039] (2) Use aramid fiber to weave the reinforcement layer, wrap it on the surface of the inner rubber layer, and start to extrude the outer rubber la...

Embodiment 2

[0049] The first step is to prepare the rubber inner tube. Mix the rubber of the inner rubber layer and the outer rubber layer on an open mill and add relevant additives for later use. To produce rubber tubing with an inner diameter of 10±0.5mm and a wall thickness of 10.5±0.5mm (the thickness of the fluororubber inner layer is 7mm, the thickness of the reinforcement layer is 0.5mm, and the thickness of the epichlorohydrin rubber outer layer is 3mm), the method steps are as follows:

[0050] (1) The fluorine rubber inner rubber layer is extruded through the extruder, and the extrusion temperature is 80°C, 70°C, 70°C, 70°C from the machine head to the screw;

[0051] (2) Use aramid fiber to weave the reinforcement layer, wrap it on the surface of the inner rubber layer, and start to extrude the outer rubber layer.

[0052] (3) Epichlorohydrin rubber for the outer rubber layer: the extrusion temperature is 75°C, 60°C, 60°C, and 60°C in sequence from the machine head to the scre...

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Abstract

The invention discloses a rubber oil pipe with an efficient heat protection structure and a preparation method of the rubber oil pipe. The preparation method comprises the following steps: preparing an inner rubber pipe, adhering a heat insulation layer and adhering a high-reflection metal / textile composite film. The high-reflection metal / textile composite film can be used for reflecting heat radiation; the heat insulation layer can be used for effectively reducing heat transferring and heat convection; the heat insulation material layer meeting the size requirements is compounded and fixed on the rubber oil pipe; and the high-reflection composite film is paved on the surface of a heat insulation felt and is combined with the heat insulation felt very well by using an adhesive. The rubber oil pipe has high heat protection efficiency, low cost and good reliability; and the prepared rubber oil pipe with the efficient heat protection structure has excellent mechanical property and heat insulation property and can be widely applied to industries including steel, chemical engineering, petroleum, ship building, automobile manufacturing and the like.

Description

technical field [0001] The invention relates to a preparation method of a rubber oil pipe with high heat resistance, in particular to a composite oil pipe with an efficient heat protection structure and a preparation method thereof. Background technique [0002] Hydraulic rubber oil pipes used in high temperature environments such as steel mills and power plants, rubber oil pipes have good fatigue toughness, wear resistance, light weight, corrosion resistance, cheap price, good adaptability, and good insulation. The thermal temperature is low (generally lower than 200°C), and it is easy to age and crack in a high-temperature environment (600-1200°C), causing the hydraulic oil in the pipe to flow out and the pressure system to fail, resulting in an extremely low overall service life of the oil pipe (generally within 1 ~2 days), which greatly increases the operation and maintenance cost, reduces the production efficiency of the equipment, and increases the safety and productio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B1/08B32B7/12B32B25/02F16L11/12F16L59/153
CPCB32B1/08B32B7/12B32B25/04B32B2307/306F16L11/08F16L11/125F16L59/028F16L59/153
Inventor 王凤岭吕金仓王胜利
Owner HEBEI SIBERIA SPECIAL RUBBER
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