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Environment-friendly automobile fuel hose with excellent adhesiveness and preparation method thereof
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An automotive fuel hose, an environmentally friendly technology, applied in the direction of chemical instruments and methods, hoses, pipes, etc., can solve the problems affecting the driving safety of drivers, unfavorable product quality stability, layered bursting, etc., to achieve good environmental friendliness, Improving anti-oxidation performance and promoting effect of vulcanization
Inactive Publication Date: 2020-06-05
ZHEJIANG JUNHE RUBBER TECH
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Problems solved by technology
[0005] At present, there are two major problems in automobile fuel pipes: 1. The problem of lead-free
2. Adhesion problem
If the adhesion between the two layers is not good, it will not be conducive to ensuring the stability of the product quality when the car is driving at the critical point, and the problem of delamination and bursting may occur, which will greatly affect the driving safety of the driver.
Method used
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preparation example Construction
[0068] For the preparation method of the environment-friendly automobile fuel hose with excellent adhesion, see figure 1 , including the following preparation steps:
[0069] ①. Prepare inner rubber layer premix
[0070] Weigh the fluororubber, N990 carbon black, magnesiumoxide, low molecular weight polyethylene, flow aid, calciumhydroxide, bisphenol AF and accelerator BPP in the above-mentioned parts by weight, and mix them uniformly to obtain the inner rubber layer premix ;
[0071] ②. Preparation of cover layer premix
[0072] Weigh the monochlorohydrin rubber, dichlorohydrin rubber, N550 carbon black, plasticizer, stearic acid, flow aid, anti-aging agent, environment-friendly vulcanizing agent, lead-free and thioureapromoter of the above-mentioned set weight parts. agent, after mixing evenly, the outer rubber layer premix is obtained;
[0074] Put the inner rubber layer premix and the outer rubber layer premix respectively into the two si...
Embodiment 2-12
[0077] Examples 2-12 are all based on the method of Example 1, and the components of the inner rubber layer / outer rubber layer are adjusted. For specific adjustments, see Table 1 below.
[0078] The adjustment table of the composition of inner glue layer / outer glue layer in the embodiment 1-12 of table one
[0079]
[0080]
Embodiment 1
[0082] Examples 13-14 are all based on the method of Example 1, and the preparation process parameters of the fuel hose are adjusted. For specific adjustments, see Table 2 below.
[0083] Table 2 Example 1 and the preparation process parameter adjustment table of the fuel hose of Examples 13-14
[0084]
[0085] 3. Comparative example
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Abstract
The invention relates to the technical field of rubber tubes, in particular to an environment-friendly automobile fuel hose with excellent adhesiveness and a preparation method thereof, the automobilefuel hose is of a two-layer composite structure, an inner rubber layer of the two-layer composite structure is an FKM rubber layer, and an outer rubber layer of the two-layer composite structure is an ECO rubber layer; the FKM rubber layer comprises the following components: fluororubber, N990 carbon black, magnesiumoxide, low molecular weight polyethylene, a flow aid, calciumhydroxide, bisphenol and an accelerant BPP; the ECO rubber layer comprises the following components: homopolymerized epichlorohydrin rubber, copolymerized epichlorohydrin rubber, N550 carbon black, a plasticizer, stearic acid, a flow aid, an anti-aging agent, an environment-friendly vulcanizing agent and a lead-free and thiourea-free accelerant. A co-extrusion molding mode is adopted, one-step extrusion molding ofthe fuel oil rubber pipe is achieved, and the inner rubber layer and the outer rubber layer in the prepared fuel oil hose have excellent adhesiveness, mechanical property, heat resistance and oil resistance.
Description
technical field [0001] The invention relates to the technical field of rubber hoses, in particular to an environment-friendly automobile fuel rubber hose with excellent adhesion and a preparation method thereof. Background technique [0002] Automotive fuel pipes include fuel oil pipes and fuel pipes that supply fuel to the engine. They are relatively important safety parts and have relatively high performance requirements for their materials. Generally speaking, the material of the inner rubber layer of the fuel pipe should be a material with good resistance to fuel medium and heat resistance, and the material of the outer layer should be selected with good mechanical properties, heat resistance, ozone resistance, and good adhesion to the inner rubber layer. Compatible rubber material. [0003] Fluorine rubber (FKM) has high chemical stability, has the best medium resistance and heat resistance among all kinds of rubber, can be used for a long time between 200°C and 250°C,...
Claims
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Application Information
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