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Expanding rubber pipe and production process thereof

A production process and technology of rubber hoses, applied in the direction of hoses, pipes, tubular objects, etc., can solve the problems of aging and cracking of the outer layer of the expansion rubber tube, affecting the service life of the expansion rubber tube, and poor ductility of the expansion rubber tube, so as to achieve enhanced high temperature resistance. , The effect of improving internal strength and high pressure resistance coefficient

Active Publication Date: 2017-07-28
张东晓
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most of the expansion hoses on the market are covered with a metal mesh structure inside the rubber tube body. This type of expansion hose has a certain strength and a long service life, but it has great disadvantages, which are mainly reflected in: 1 .The existing expansion hose has poor ductility and is not easy to bend. In actual use, if it is used inside a very narrow machine, it will cause serious deformation of the steel cloth inside the expansion hose, and long-term use will seriously affect the service life of the expansion hose; 2. The interior of the existing expansion hose is supported by a steel cloth layer skeleton. Due to the good thermal conductivity of the metal, in actual use, for the delivery of high-temperature hydraulic oil, it is easy to cause aging and cracking of the outer layer of the expansion hose, and it is easy to cause burns to external personnel.

Method used

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  • Expanding rubber pipe and production process thereof
  • Expanding rubber pipe and production process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Take the raw materials for assembly, and assemble with 50 kilograms of ingredients, natural rubber 35%, butadiene rubber 13%, zinc oxide 5%, anti-aging agent A 2%, anti-aging agent D 2%, coumarone 4%, 220 carbon 20% of black, 15% of calcium bicarbonate, 2% of petrolatum, 1% of stearic acid, 0.4% of sulfur, 0.5% of accelerator NOBS, and 0.1% of TMTD.

[0028] The preparation method of described a kind of expansion rubber hose is as follows:

[0029] The production process of the above-mentioned expansion rubber hose is summarized as the following steps, mastication→mixing→extrusion, calendering→forming→vulcanization, and the specific steps are as follows:

[0030] (1) After the above-mentioned components and materials are ready, turn on the hot water adjustment of the chiller, preheat the roller temperature to 75°C, open the silo, add natural rubber, and masticate for 10 minutes;

[0031] (2) Add butadiene rubber, zinc oxide, anti-aging agent A, anti-aging agent D, and ...

Embodiment 2

[0040]Take the above components and proportions, and assemble with 50 kg of ingredients, natural rubber 38%, butadiene rubber 14%, zinc oxide 7%, anti-aging agent A 2%, anti-aging agent D 2%, coumarone 3% , 220 carbon black 15%, calcium bicarbonate 15%, petrolatum 2%, stearic acid 1%, sulfur 0.3%, accelerator NOBS 0.6%, TMTD 0.1%, the proportion of the above components must reach 100%.

[0041] The production technology of described a kind of expansion rubber hose, its preparation method is as follows:

[0042] The production process of the above-mentioned expansion rubber hose is summarized as the following steps, mastication→mixing→extrusion, calendering→forming→vulcanization, and the specific steps are as follows:

[0043] (1) After the above-mentioned components and materials are ready, turn on the hot water adjustment of the chiller, preheat the roller temperature to 80°C, open the silo, add natural rubber, and masticate for 10 minutes;

[0044] (2) Add butadiene rubber,...

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Abstract

The invention discloses an expanding rubber pipe and a production process thereof. The expanding rubber pipe comprises an internal pipe cavity, an inner rubber layer is arranged on the exterior of the pipe cavity, an inner enhancement layer is arranged on the exterior of the inner rubber layer, and a rubber layer with the thickness being 0.25 mm is bonded to the inner enhancement layer; an outer enhancement layer is arranged on the outer side of the inner enhancement layer, a rubber layer with the thickness being 0.25 mm is compounded to the outer enhancement layer, and an outer rubber pipe is arranged on the outer side of the outer enhancement layer; and the expanding rubber pipe is composed the following components including 36%-40% of natural rubber, 13%-15% of butadiene rubber, 5%-8% of zinc oxide, 1%-5% of an anti-aging agent A, 1%-5% of an anti-aging agent D, 3%-6% of coumarone, 15%-25% of 220 carbon black, 15%-20% of calcium bicarbonate, 2%-4% of Vaseline, 1%-2% of stearic acid, 0.3%-0.5% of sulphur, 0.5%-1% of an accelerant NOBS and 0.1%-0.2% of TMTD. The expanding rubber pipe is high in pressure resisting coefficient and good in heat isolation performance, a pipe body is soft, and the expanding rubber pipe is ideal.

Description

technical field [0001] The invention relates to the technical field of expansion rubber hoses, and more specifically relates to an expansion rubber hose and a production process thereof. Background technique [0002] As we all know, in the field of hydraulic system oil delivery, expansion hoses are often used to transport hydraulic carriers, because most hydraulic oils are in a high temperature state during operation, and expansion hoses need to have good ductility and bending properties. At the same time, more should be It has high temperature and high pressure resistance and good heat insulation. [0003] Most of the expansion hoses on the market are covered with a metal mesh structure inside the rubber tube body. This type of expansion hose has a certain strength and a long service life, but it has great disadvantages, which are mainly reflected in: 1 .The existing expansion hose has poor ductility and is not easy to bend. In actual use, if it is used inside a very narro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L11/08B29D23/00C08L7/00C08L9/00C08K13/02C08K3/22C08K3/04C08K3/26C08K5/09
CPCF16L11/083C08L7/00B29D23/001C08K2003/2296C08L2203/18C08L2205/035C08L9/00C08K13/02C08K3/22C08K3/04C08K3/26C08K5/09
Inventor 张东晓
Owner 张东晓
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