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TPV (Thermoplastic vulcanizate) material as well as preparation method and application method thereof

A raw material, mineral oil technology, applied in the field of polymers, can solve the problems of not being able to apply the corner material of automobile sealing strips, insufficient bonding degree, and low strength, etc., and achieve good adhesion, comprehensive vulcanization, and increased crosslinking degree Effect

Active Publication Date: 2019-07-23
宁波博思特高分子材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its advantages are short processing cycle, high production efficiency, low labor cost and environmental protection and reusability. However, the current TPV materials have the disadvantages of insufficient bonding, easy cracking, breaking, low strength and poor elasticity, which cannot be applied to Corner material for automobile sealing strip

Method used

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  • TPV (Thermoplastic vulcanizate) material as well as preparation method and application method thereof
  • TPV (Thermoplastic vulcanizate) material as well as preparation method and application method thereof
  • TPV (Thermoplastic vulcanizate) material as well as preparation method and application method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A kind of TPV material is prepared by liquid cross-linking and graft vulcanization process, and the raw material of described TPV material is counted as: 100 parts of RE-EPDM elastomer; 100 parts of ultra-high viscosity mineral oil; 10 parts of olefinic acid compound Modified EPDM; 20 parts of acrylic acid grafted POE; 15 parts of polypropylene; 5 parts of reactive octyl phenolic resin (the first crosslinking agent); 3.5 parts of stannous chloride; 0.5 parts of dicumyl peroxide (the second crosslinking agent); 0.3 parts wollastonite.

[0041] Among them, the RE-EPDM has extremely low shear thinning properties, and its viscosity ranges from 80000 Pascal-seconds (pa-s) at 0.15 rad / s to 1000 Pascal-seconds (pa-s) at 220 rad / s, so The 100°C kinematic viscosity of the above ultra-high viscosity mineral oil is greater than 30mm 2 / s, the flash point is greater than 280°C, the content of dimethyl sulfoxide is less than 3%, and the content of linear hydrocarbons accounts for a...

Embodiment 2

[0057] The raw material of a kind of TPV material is counted as follows by weight: 100 parts of RE-EPDM elastomers; 150 parts of ultra-high viscosity mineral oils; 5 parts of olefinic acid compounds modified EPDM; 25 parts of acrylic acid grafted POE; 20 parts of polypropylene; Parts of phenolic resin (first crosslinking agent); 4.5 parts of zincous chloride; 1 part of benzoyl peroxide (BPO) (second crosslinking agent); 0.5 parts of calcium carbonate.

[0058] Wherein, the modified EPDM of the alkenoic acid compound comprises the steps of: dissolving 100 parts of EPDM and 10 parts of acrylic acid in a mixed organic solvent of n-heptane / cyclohexanone three times the mass, and then adding 5 parts of dissolved BPO to initiate Add the cyclohexanone of the agent, feed nitrogen gas and react for 16 hours, add excess ethanol under the condition of stirring to precipitate the product, and dry the precipitate to constant weight to obtain the enoic acid compound modified EPDM.

[0059] ...

Embodiment 3

[0070] The raw material of a kind of TPV material is calculated by weight: 100 parts of RE-EPDM elastomers; 50 parts of ultra-high viscosity mineral oils; 15 parts of olefinic acid compounds modified EPDM; 15 parts of acrylic acid grafted POE; 10 parts of polypropylene; 1 part of brominated phenolic resin (first cross-linking agent); 1 part of stannous chloride; 0.1 part of 1,3-bis(tert-butylperoxyisopropyl)benzene (second cross-linking agent); 0.1 part of talcum powder.

[0071]Wherein, the modified EPDM of the alkenoic acid compound comprises the steps of: dissolving 100 parts of EPDM and 2 parts of acrylic acid in a mixed organic solvent of n-heptane / cyclohexanone with three times the mass, and then adding 1 part of dissolved BPO to trigger Add the cyclohexanone of the agent, feed nitrogen gas and react for 16 hours, add excess ethanol under the condition of stirring to precipitate the product, and dry the precipitate to constant weight to obtain the enoic acid compound modi...

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Abstract

The invention provides a TPV (Thermoplastic vulcanizate) material as well as a preparation method and an application method thereof. The material is prepared through a liquid-state crosslinking process and a grafting vulcanization process, is prepared from the following raw materials in parts by weight: 100 parts of EPDM (Ethylene propylene diene monomer) matrixes, 50-150 parts of mineral oil, 10-20 parts of polypropylene, 15-25 parts of polyolefin elastomers (POE) and / or 5-15 parts of gadoleic acid compound modified EPDM, and 4-13 parts of crosslinking agents. Accordingly, through improving aformula of the TPV material and improving a production process, the bonding firmness of the TPV material is improved; cracking and stretch breaking of a product is effectively prevented; thus, the TPV material is applicable to joint angle of automobile sealing strips.

Description

technical field [0001] The invention relates to the technical field of polymers, in particular to a TPV material suitable for joints of automobile sealing strips, a preparation method and an application method thereof. Background technique [0002] Most of the car sealing strips are made of rubber, and are mainly used in car windows, front windshields, car bodies, trunks, etc. The sealing strips can effectively achieve the functions of sealing, sound insulation, shock absorption, waterproof, heat insulation, dustproof, and fixing. Each sealing system is formed by one or several extruded sealing strips, such as the glass run channel of a car door, which is a guide channel assembly formed by three extruded sealing strips connected by two joints. [0003] At present, EPDM vulcanized rubber is mainly used as the corner material of automobile sealing strips. The advantage of vulcanized rubber is that the process is relatively mature and the bonding is firm, but there are problems...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08L91/06C08L23/12C08L51/06C08L23/26C08J3/24C08J3/22C08F287/00C08F220/06
CPCC08L23/16C08J3/246C08J3/226C08F287/00C08J2323/16C08J2491/06C08J2423/12C08J2451/06C08J2423/26C08L91/06C08L23/12C08L51/06C08L23/26C08L51/006C08F220/06
Inventor 金洪广石益雄张少林朱德涛
Owner 宁波博思特高分子材料科技有限公司
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