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Special material for automotive seal strip and preparation method thereof

A technology for strips and automobiles, which is applied in the field of special materials for automobile sealing strips and its preparation, can solve the problems of complex processing technology, high production cost, and high total cost, and achieve the effects of simple processing technology, easy recycling of materials, and reduction of raw material costs

Active Publication Date: 2009-09-02
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] CN1094421A discloses a kind of PVC modified material in 1994, is mainly used in the anti-scratch strip material of automobile, also can be used for sealing strip, but its hardness is higher (Shore A90), is far higher than the new formula of 2005 The requirements of the automotive standard QC / T641-2005
[0005] CN1442448A discloses a kind of anti-aging thermoplastic elastomer and its preparation method in 2003, mainly is made up of SBS, MBS and EPM, can be used for automobile sealing strip, but because the cost of main composition is higher, so the total cost of its product higher
[0006] CN1537135A disclosed an olefinic thermoplastic elastomer foam and its olefinic thermoplastic elastomer composition in 2004, which can be used to make automobile weather strips, foam sheets for filling gaps, sponge seals for building doors and windows, etc., but its The production is elastomer foam, the processing technology is quite complicated, and the production cost is high

Method used

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  • Special material for automotive seal strip and preparation method thereof
  • Special material for automotive seal strip and preparation method thereof
  • Special material for automotive seal strip and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The process formula is as follows:

[0045] PVC2500 (PVC with a degree of polymerization of 2500) 70

[0046] Component one: NBR (nitrile rubber) 30

[0047] Plasticizer 1: ATBC (trioctyl citrate) 70

[0048] Plasticizer 2: EVA 3

[0049] Stabilizer 1: Organotin 1.2

[0050] Stabilizer 2: Epoxidized soybean oil 2

[0051]Lubricant: HST (stearic acid) 0.2

[0052] Inorganic filler: calcium carbonate 10

[0053] Colorant: carbon black paste 50

[0054] Vulcanizing agent: DCP 0.1

[0055] Vulcanization aid: TAIC (triisocyanuric acid urate) 3

[0056] Put PVC2500, vulcanizing agent DCP, inorganic filler calcium carbonate, colorant carbon black pulp, lubricant stearic acid, heat stabilizer-organotin and heat stabilizer diepoxidized soybean oil into a high-speed mixer according to the ratio of raw materials mix. The stirring speed is 120-150 rpm. Add plasticizer 1 ATBC and plasticizer 2 EVA three times during the stirring process.

[0057] Add plasticizer 1 ATBC a...

Embodiment 2

[0063] Same as Example 1, the difference is that the degree of polymerization of PVC is 3000, and the mechanical properties of the obtained material are shown in Table 2.

[0064] Compare the experimental results with the standard QC / T641-2005 for rubber sealing strips and automobile sealing strips, see Table 2.

[0065] Table 2 Properties of automotive weather strip materials

[0066]

Embodiment 3

[0068] The process formula is as follows:

[0069] PVC1300 70

[0070] Component one NBR 30

[0071] Plasticizer-ATBC 70

[0072] Plasticizer II EVA 3

[0073] Stabilizer lead monocyanurate 1.2

[0074] Stabilizer Diepoxidized Soybean Oil 2

[0075] Lubricant HST 0.2

[0076] filler calcium carbonate 10

[0077] Colorant carbon black paste 50

[0078] Vulcanizing agent DCP 0.1

[0079] Vulcanization aid TAIC 3

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Abstract

A material for automotive seal strip comprises PVC with a certain amount of powdered nitrile rubber, plasticizer, heat stabilizer, lubricant, inorganic filler, coloring agent, curing agent and vulcanization aid; and squeezing granulation is carried out by a screw extruder. The invention utilizes the PVC thermoplastic elastomer to replace part of the rubber material and has the features possessed by the rubber material, thus significantly reducing the cost of raw materials and having the characteristics of simple processing technology, easy recycling of materials and the like, and improving shortcomings in the prior art that the materials can not be recycled after rubber vulcanization. Compared with other thermoplastic elastomers, the PVC thermoplastic elastomer seal strip provided by the invention has excellent compression set resistance reaching below 40%, low temperature resistance reaching minus 40 DEG C, and excellent chemicals resistance. The material has flexibility, and soundproofing, dustproofing, watertight and shock-absorbing functions, and can meet performance requirement of rubber automotive sealing strips.

Description

technical field [0001] The invention relates to a special material for automobile sealing strips and a preparation method thereof Background technique [0002] Automobile sealing strip is one of the important parts of automobiles. It is widely used in doors, windows, body, sunroof, engine box and backup (luggage) box and other parts. It has the functions of sound insulation, dustproof, water seepage prevention and shock absorption. Maintain and maintain the small environment in the car, thus playing an important role in protecting the occupants, electromechanical devices and accessories in the car. With the development of the automobile industry, the importance of the beauty, environmental protection and comfort functions of the sealing strip has become increasingly prominent. The foreign automobile industry has carried out special research and development on the sealing system installed in various parts of the automobile (called the automobile sealing system, Automobile se...

Claims

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Application Information

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IPC IPC(8): C09K3/10C08L27/06C08K5/57B60J10/00C08L9/02C08K3/00C08K5/10B60J10/16B60J10/50B60R13/06
Inventor 王文清刘伟李静任强谢建玲代振宇王晶周涵刘容德孙春燕桂俊杰
Owner CHINA PETROLEUM & CHEM CORP
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