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Low-temperature-resistant low-compressive deformation seal gasket material for intake manifolds and preparation method thereof

A technology of intake manifold and low pressure change, applied in the field of rubber parts, can solve the problems of high price, poor processability and cold resistance of fluororubber, and achieve the effect of long-term use and reliable sealing

Active Publication Date: 2015-11-25
ANHUI ZHONGDING SEALING PARTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, fluorine rubber has poor processability and cold resistance, and is expensive

Method used

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  • Low-temperature-resistant low-compressive deformation seal gasket material for intake manifolds and preparation method thereof

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Embodiment 1

[0029] The present invention proposes a low-temperature-resistant, low-pressure variable intake manifold gasket material, whose raw materials include the following components by weight percentage: 60% of fluororubber raw rubber, 5% of calcium silicate, 16.1% of diatomite, barium sulfate 3%, PTFE micropowder 3%, cerium oxide 5%, calcium hydroxide 2.4%, magnesium oxide 2.8%, lubricant 0.5%, 2,2-bis(4-hydroxyphenyl)hexafluoropropane 1.4%, 0.3% benzyl triphenyl phosphorus chloride, 0.5% auxiliary materials.

[0030] A kind of preparation method of low-temperature resistant, low-pressure variable intake manifold gasket material proposed by the present invention comprises the following steps:

[0031] S1. Prepare materials according to the proportion and send all raw materials into the internal mixer for primary mixing. After 16 hours at room temperature, carry out secondary mixing to obtain a hardness of 70 degrees, a tensile strength of 12.7MPa, and an elongation at break. 258% s...

Embodiment 2

[0035] A low-temperature-resistant, low-pressure variable intake manifold sealing gasket material proposed by the present invention, its raw materials include the following components by weight percentage: 64.1% of fluororubber raw rubber, 5% of calcium silicate, 5% of diatomaceous earth, barium sulfate 4%, PTFE micropowder 10%, cerium oxide 2%, calcium hydroxide 4.5%, magnesium oxide 1.5%, lubricant 2%, 2,2-bis(4-hydroxyphenyl)hexafluoropropane 0.6%, 0.7% benzyl triphenylphosphorous chloride, 0.6% auxiliary materials.

[0036] A kind of preparation method of low-temperature resistant, low-pressure variable intake manifold gasket material proposed by the present invention comprises the following steps:

[0037] S1. Prepare materials according to the proportion and send all raw materials into the internal mixer for primary mixing, and then carry out secondary mixing after parking at room temperature for 18 hours. The obtained hardness is 72 degrees, tensile strength is 14.6MPa,...

Embodiment 3

[0041] The present invention proposes a low-temperature-resistant, low-pressure variable intake manifold sealing gasket material, whose raw materials include the following components by weight percentage: 62% of fluororubber raw rubber, 7% of calcium silicate, 10% of diatomite, barium sulfate 6%, PTFE micropowder 4.2%, cerium oxide 3.2%, calcium hydroxide 3%, magnesium oxide 1.5%, lubricant 0.8%, 2,2-bis(4-hydroxyphenyl)hexafluoropropane 0.9%, 0.4% benzyltriphenylphosphorus chloride, 1% auxiliary material; wherein, the diatomite is surface-modified diatomite; the modifier used for surface-modified diatomite is methacryloyloxysilane , stearic acid, silane coupling agent KH-550, silane coupling agent KH-560, silane coupling agent KH-580, silane coupling agent ND-42 in a weight ratio of 1:3:2:4:2: 1 combination.

[0042] A kind of preparation method of low-temperature resistant, low-pressure variable intake manifold gasket material proposed by the present invention comprises the...

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Abstract

The invention discloses a low-temperature-resistant low-compressive deformation seal gasket material for intake manifolds and a preparation method thereof. The material comprises, by weight, 60-70% of raw fluororubber, 5-15% of calcium silicate, 5-20% of diatomite, 3-15% of barium sulfate, 3-10% of polytetrafluoroethylene powder, 2-5% of cerium oxide, 2.4-4.5% of calcium hydroxide, 1.5-2.8% of magnesium oxide, 0.5-2% of lubricant, 0.6-1.4% of 2, 2-bis(4-hydroxyphenyl)hexafluoropropane, 0.3-0.7% of benzyl triphenyl phosphorus chloride, and 0.5-2% of auxiliary material. The low-temperature-resistant low-compressive deformation seal gasket material for intake manifolds and the preparation method thereof have the advantages that the preparation method is simple and easy to operate, the material has good processability, low compression set and excellent low temperature resistance, and an intake manifold seal gasket made of the material has good comprehensive properties and long service life.

Description

technical field [0001] The invention relates to the technical field of rubber parts, in particular to a low-temperature-resistant, low-pressure variable intake manifold sealing material and a preparation method thereof. Background technique [0002] The engine is the core component of the "heart" of the car, and its performance directly affects the performance, life and personal safety of the car. The sealing of the connection between the intake manifold and the engine block is the premise to ensure the normal operation of the engine, so the sealing technology of the intake system is particularly important. In order to solve its sealing problem, it is necessary to install a rubber gasket between the intake manifold and the engine block. After the rubber gasket is compressed, it will generate a rebound force, and a certain sealing contact pressure will be generated in the required sealing area, thereby preventing The liquid or gas inside the intake manifold leaks outward, wh...

Claims

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Application Information

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IPC IPC(8): C08L27/16C08L27/18C08K13/06C08K9/06C08K9/04C08K3/34C08K3/30C08K3/22C08K5/136C08K5/50B29C35/02
Inventor 夏迎松刘春燕汪佑宏陶善喜张海潮许耀东
Owner ANHUI ZHONGDING SEALING PARTS
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