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Preparation method of rubber material for preparing temperature-resisting and ozone-resisting automobile oil tank gasket

A technology for automobile fuel tanks and rubber materials, which is applied in the field of preparation of rubber materials, can solve the change of hardness, tensile strength, elongation at break, and ozone resistance that do not meet the requirements, and it is difficult to meet the increasing requirements of rubber products. Problems such as low temperature and ozone resistance

Active Publication Date: 2012-09-12
上海天普汽车零部件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] As can be seen from the above-mentioned experimental results, the hardness change, tensile strength change, elongation at break change and ozone resistance performance of the automobile fuel tank gasket rubber products that adopt nitrile rubber to make do not all meet the requirements; Fuel tank gasket rubber products have low temperature resistance and ozone resistance, which makes it difficult to meet the increasing requirements of the automotive industry for rubber products

Method used

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  • Preparation method of rubber material for preparing temperature-resisting and ozone-resisting automobile oil tank gasket
  • Preparation method of rubber material for preparing temperature-resisting and ozone-resisting automobile oil tank gasket
  • Preparation method of rubber material for preparing temperature-resisting and ozone-resisting automobile oil tank gasket

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Experimental program
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Effect test

preparation example Construction

[0025] The preparation method of the rubber material for preparing the temperature-resistant and ozone-resistant automobile oil tank gasket of the present invention, it comprises the steps:

[0026] (1) Cool the internal mixer with water, put rubber raw materials, reinforcing fillers, plasticizers, active agents, anti-aging agents and accelerators into the internal mixer for internal mixing, and control the rubber temperature below 130°C for internal mixing. Glue removal, sheet release and cooling on an open rubber mixer to obtain masterbatch;

[0027] (2) Put the masterbatch into the internal mixer, add vulcanizing agent evenly for mixing, control the temperature of the glue below 100°C to discharge the glue, and release the sheet on the open rubber mixer, cool it and let it stand for aging to obtain the raw materials for the manufacture of automobiles. Temperature-resistant and odor-resistant rubber materials used in rubber products such as fuel tank gaskets.

[0028] In th...

Embodiment 1

[0033] Rubber raw material: nitrile rubber 61.05%;

[0034] Reinforcing filler: quick-pressed furnace black 18.32%;

[0035] Plasticizer: Dioctyl phthalate 9.15%;

[0036] Active agent: zinc oxide 3.05%, stearic acid 0.92%;

[0037] Antiaging agent: 1.22% of 2,2,4-trimethyl-1,2-dihydroquinoline polymer, 0.92% of 2-mercaptobenzimidazole, N-isopropyl-N'-phenyl-p-phenylenediamine 1.53%, paraffin 0.92%;

[0038] Accelerator: dibenzothiazole disulfide 1.22%;

[0039] Vulcanizing agent: tetramethylthiuram disulfide 0.85%, dimorpholine disulfide 0.85%;

[0040] Specifically include the following steps:

[0041] (1) Cool the internal mixer with water, control the temperature of the internal mixer studio to be greater than 100°C, and the rotation speed: 32 rpm, and mix the rubber raw materials, reinforcing fillers, plasticizers, active agents, and anti-aging agents in the formula 1. The accelerator is put into the internal mixer, the internal mixing takes 4.5 minutes, the glue te...

Embodiment 2

[0047] Rubber raw material: nitrile rubber 61.82%;

[0048] Reinforcing filler: quick-pressed furnace black 18.11%;

[0049] Plasticizer: Dioctyl phthalate 8.74%;

[0050] Active agent: zinc oxide 3.06%, stearic acid 0.88%;

[0051] Antiaging agent: 1.19% of 2,2,4-trimethyl-1,2-dihydroquinoline polymer, 0.87% of 2-mercaptobenzimidazole, N-isopropyl-N'-phenyl-p-phenylenediamine 1.50%, paraffin 0.87%;

[0052] Accelerator: dibenzothiazole disulfide 1.24%;

[0053] Vulcanizing agent: tetramethylthiuram disulfide 0.86%, dimorpholine disulfide 0.86%;

[0054] Specifically include the following steps:

[0055] (1) Cool the internal mixer with water, control the temperature of the internal mixer studio to be greater than 100°C, and the rotation speed: 32 rpm, and mix the rubber raw materials, reinforcing fillers, plasticizers, active agents, and anti-aging agents in the formula , The accelerator is put into the internal mixer, the internal mixing takes 4 minutes, the glue tempe...

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Abstract

The invention discloses a preparation method of a rubber material for preparing a temperature-resisting and ozone-resisting automobile oil tank gasket. The preparation method comprises the following steps of: (1) supplying water to cool an internal mixer, putting a rubber raw material, a reinforcing filler, a plasticizer, an activating agent, an anti-aging agent and an accelerating agent into the internal mixer, internally mixing, controlling the temperature of rubber to be lower than 130 DEG C for rubber discharging, discharging sheets on an open type rubber mixing machine, and cooling to obtain master batch; and (2) putting the master batch into the internal mixer, uniformly adding a vulcanizing agent, mixing, controlling the temperature of the rubber to be lower than 100 DEG C for rubber discharging, discharging the sheets on the open type rubber mixing machine, cooling, standing, and curing to obtain a temperature-resisting and ozone-resisting rubber material which is used for manufacturing the automobile oil tank gasket and other rubber products. Compared with the prior art, the preparation method has the advantages that the prepared automobile oil tank gasket and other rubber products meet the standards of American Society for Testing Material (ASTM) D2240, ASTM D412, ASTM D573 and ASTM D1171, meet the requirement of an extra low voltage (ELV) instruction and achieve the effects of temperature resistance and ozone resistance through the detection of various mechanical strength indexes and physical and chemical indexes by using the prepared temperature-resisting and ozone-resisting rubber material.

Description

technical field [0001] The invention relates to a method for preparing a rubber material, in particular to a method for preparing a rubber material for an automobile oil tank gasket used for preparing a temperature-resistant and ozone-resistant automobile oil tank gasket. Background technique [0002] The heat resistance (125°C) and ozone resistance (concentration 50PPhm) of rubber products such as automobile fuel tank gaskets produced by the existing preparation method are relatively low and cannot meet the requirements. [0003] In the prior art, the test data of automobile oil tank gasket rubber products made of rubber material (nitrile rubber) are as follows: [0004] [0005] As can be seen from the above-mentioned experimental results, the hardness change, tensile strength change, elongation at break change and ozone resistance performance of the automobile fuel tank gasket rubber products that adopt nitrile rubber to make do not all meet the requirements; Fuel tan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29B7/00C08L9/02C08K13/02C08K3/04C08K5/12C08K3/22C08K5/09C08K5/3437C08K5/37C08K5/18
Inventor 尤建义
Owner 上海天普汽车零部件有限公司
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