Rubber pipe and preparation method and application thereof

A technology of rubber tubes and fluororubbers, applied in the direction of hoses, pipes, mechanical equipment, etc., to achieve excellent permeability resistance, improve structural integrity, and meet the effects of oil resistance

Active Publication Date: 2017-05-10
TIANJIN PENGYI GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the traditional fluorine rubber (FKM) / chlorohydrin rubber (ECO), nitrile rubber + polyvinyl chloride (NBR-PVC), NBR-PVC / chlorosulfonated polyethylene (CSM), nitrile rubber (NBR) / Neoprene (CR) and other structural fuel vapor pipelines have been difficult to meet the problems and shortcomings of the automotive industry's increasing requirements for rubber products, let alone meet the stringent requirements of new regulations. Fuel vapor pipeline with better overall performance

Method used

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  • Rubber pipe and preparation method and application thereof
  • Rubber pipe and preparation method and application thereof
  • Rubber pipe and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1－5

[0103] The rubber tube in the automobile fuel steam pipe assembly uses FKM as the inner layer, fluororesin as the middle layer and ECO as the outer layer, wherein the fluororesin middle layer is Daikin CPT in Japan, and the FKM inner layer and ECO outer layer are according to Table 1 and Table 2 respectively The proportions of the raw materials shown were weighed to obtain the FKM inner layer and ECO outer layer material formulations of Examples 1-5.

[0104] Table 1 Embodiment 1-5FKM inner layer material formula

[0105]

[0106] Table 2 Example 1-5 ECO outer layer material formula

[0107]

[0108]

[0109] Then, prepare the rubber pipe in the automobile fuel vapor pipe assembly according to the following steps:

[0110] (1) Weigh fluororubber G-558, calcium hydroxide, magnesium oxide, carbon black N-774, internal release agent WS280 and carnauba wax according to the formula ratio in Table 1 for mixing, and then introduce them into the extruder Among them, the ext...

Embodiment 6

[0120] Different from Example 1, in the preparation steps of the rubber tube:

[0121] (1) The extrusion temperature of the inner layer FKM is:

[0122] Head temperature: 110°C; extrusion section temperature: 60°C; plasticizing section temperature: 60°C; screw section temperature: 60°C;

[0123] (2) The extrusion temperature of the middle layer CPT is:

[0124] Head temperature: 280°C; extrusion section temperature: 270°C; plasticizing section temperature: 270°C; screw section temperature: 260°C; feeding section temperature: 250°C;

[0125] (3) The extrusion temperature of the outer layer ECO is:

[0126] Head temperature: 110°C; extrusion section temperature: 100°C; plasticizing section temperature: 90°C; screw section temperature: 80°C;

[0127] The primary vulcanization parameters are: vulcanization temperature 155°C, vulcanization time 20min, and the secondary vulcanization parameters are: vulcanization temperature 160°C, vulcanization time 80min.

[0128] All the othe...

Embodiment 7

[0130] Different from Example 1, in the preparation steps of the rubber tube:

[0131] (1) The extrusion temperature of the inner layer FKM is:

[0132] Head temperature: 100°C; extrusion section temperature: 50°C; plasticizing section temperature: 50°C; screw section temperature: 50°C;

[0133] (2) The extrusion temperature of the middle layer CPT is:

[0134] Head temperature: 260°C; extrusion section temperature: 250°C; plasticizing section temperature: 250°C; screw section temperature: 240°C; feeding section temperature: 220°C;

[0135] (3) The extrusion temperature of the outer layer ECO is:

[0136] Head temperature: 100°C; extrusion section temperature: 90°C; plasticizing section temperature: 90°C; screw section temperature: 80°C;

[0137] The primary vulcanization parameters are: vulcanization temperature 165°C, vulcanization time 30min, and the secondary vulcanization parameters are: vulcanization temperature 170°C, vulcanization time 100min.

[0138] All the othe...

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Abstract

The invention relates to the technical field of automobile rubber pipes, in particular to a rubber pipe and a preparation method and application thereof. The rubber pipe is in a three-layer structure which comprises an inner fluorine rubber layer, a middle fluorine resin layer and an outer epichlorohydrin rubber layer sequentially from inside to outside. The inner fluorine rubber layer is mainly prepared from, by weight, 90-110 parts of fluorine rubber G-558, 2-20 parts of calcium hydroxide, 1-10 parts of magnesium oxide, 5-50 parts of carbon black N-774, 0.5-5 parts of an internal releasing agent WS280 and 0.5-5 parts of carnauba wax. The middle fluorine resin layer is a Japanese Daikin CPT material layer. The rubber pipe is extremely low in permeability, safe, environment friendly and low in environment pollution, the adhesion force can meet standard requirements while utilization requirements on oil resistance, thermal resistance, ozone resistance and the like can be met, and meeting of strict requirements of new regulations is strongly guaranteed.

Description

technical field [0001] The invention belongs to the technical field of automobile rubber hoses, and in particular relates to a rubber hose and its preparation method and application. Background technique [0002] With the development of the automobile industry and the enhancement of people's awareness of environmental protection, the requirements for auto parts are getting higher and higher. The performance of automobile rubber pipes can no longer meet the performance requirements of automobiles with daily changes. With the upcoming release of light-duty vehicle pollutant emission limits and measurement methods (China's sixth stage) (hereinafter referred to as "National IV Standard for Light-duty Vehicles"), it is known as one of the most stringent emission standards in the world. The stage IV standard limit value is slightly stricter than the European stage VI emission standard limit value. In order to meet the evaporative emission limit value of the whole vehicle, higher r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L11/04C08L27/12C08L71/03C08K13/02C08K3/22C08K3/04C08K5/09B29C47/92B29C35/02B29C48/92
CPCB29C35/02B29C48/92B29C2948/92704C08L27/12C08L71/03C08L2201/08C08L2203/18C08L2205/025F16L11/04C08L91/06C08K13/02C08K2003/2206C08K2003/222C08K3/04C08K5/09
Inventor 张洪起米龙薛俊芳
Owner TIANJIN PENGYI GRP CO LTD
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