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High-hardness and low-temperature-resistant TPV material and preparation method thereof

A technology with low temperature resistance and high hardness, which is applied in the field of TPV materials, and can solve the problems of TPV material hardness influence and low temperature performance of TPV

Inactive Publication Date: 2016-07-20
安徽韧达高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Below this temperature, the PP phase in the TPV material will become embrittled at low temperature, which will affect the overall low temperature performance of TPV.
As the relative proportion of the PP phase decreases, it will affect the hardness of the TPV material. Therefore, how to obtain a TPV material with both high hardness and low temperature resistance is of great significance to the existing industrial process.

Method used

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  • High-hardness and low-temperature-resistant TPV material and preparation method thereof
  • High-hardness and low-temperature-resistant TPV material and preparation method thereof
  • High-hardness and low-temperature-resistant TPV material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A high-hardness and low-temperature resistant TPV material, the raw materials of which include by weight:

[0021]

[0022] Wherein, the EPDM is made by copolymerizing 20wt% ethylene, 78wt% propylene and 2wt% vinyl norbornene; the PP is made of 50wt% copolymerized polypropylene and 50wt% homopolymerized polypropylene The comonomer of the copolymerized polypropylene is ethylene, the flexural modulus of the copolymerized polypropylene is ≤1100MPa, and the melt index is 0.5g / 10min; the melt index of the homopolymerized polypropylene is 5.0g / 10min;

[0023] The method for preparing the novel reinforcing agent comprises: adding HCl and H in a molar ratio of 1:3 to 2 SO 4 Add 60 mesh fly ash to the mixed acid solution, the frequency is 20KHz, the sound intensity is 0.3W / cm 2The modified fly ash was obtained by ultrasonic reaction for 1 h under the conditions of filtration, water washing, drying and grinding; toluene was added to the modified fly ash and stirred evenly,...

Embodiment 2

[0027] A high-hardness and low-temperature resistant TPV material, the raw materials of which include by weight:

[0028]

[0029] Wherein, the EPDM is copolymerized by 50wt% ethylene, 40wt% propylene and 10wt% vinyl norbornene; the PP is composed of 80wt% copolymerized polypropylene and 20wt% homopolymerized polypropylene composition; the comonomer of the copolymerized polypropylene is butene, the flexural modulus of the copolymerized polypropylene is less than or equal to 1100MPa, and the melt index is 5.0g / 10min; the melt index of the homopolymerized polypropylene is 0.5g / 10min;

[0030] The method for preparing the novel reinforcing agent comprises: adding HCl and H with a molar ratio of 1:5 2 SO 4 Add 40 mesh fly ash to the mixed acid solution, the frequency is 40KHz, the sound intensity is 0.1W / cm 2 The modified fly ash was obtained by ultrasonic reaction for 3 hours under the conditions of filtration, washing, drying and grinding; toluene was added to the modifie...

Embodiment 3

[0034] A high-hardness and low-temperature resistant TPV material, the raw materials of which include by weight:

[0035]

[0036]

[0037] Wherein, the EPDM is copolymerized by 35wt% ethylene, 59wt% propylene and 6wt% vinyl norbornene; the PP is composed of 65wt% copolymerized polypropylene and 35wt% homopolymerized polypropylene The comonomer of the copolymerized polypropylene is hexene, the flexural modulus of the copolymerized polypropylene is less than or equal to 1100MPa, and the melt index is 2.5g / 10min; the melt index of the homopolymerized polypropylene is 3.0g / 10min;

[0038] The method for preparing the novel reinforcing agent comprises: adding HCl and H in a molar ratio of 1:4 to 2 SO 4 Add 50 mesh fly ash to the mixed acid solution, the frequency is 25KHz, the sound intensity is 0.2W / cm 2 The modified fly ash was obtained by ultrasonic reaction for 2.5h under the conditions of filtration, water washing, drying and grinding; toluene was added to the modif...

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Abstract

The invention discloses a high-hardness and low-temperature-resistant TPV material.The high-hardness and low-temperature-resistant TPV material is prepared from, by weight, 40-60 parts of EPDM, 10-20 parts of PP, 20-40 parts of PE, 10-15 parts of polyolefin elastomer, 5-20 parts of maleic anhydride grafted EPDM, 5-15 parts of novel reinforcing agent, 1-3 parts of vulcanizing agent, 1-3 parts of antioxidant, 5-10 parts of plasticizer, 1-3 parts of light stabilizer, 1-3 parts of internal lubricant and 1-3 parts of processing aid.The TPV material is good in mechanical performance and excellent in low temperature resistance performance and meanwhile is excellent in processability and excellent in appearance.

Description

technical field [0001] The invention relates to the technical field of TPV materials, in particular to a high-hardness and low-temperature-resistant TPV material and a preparation method thereof. Background technique [0002] TPV is the abbreviation of Thermoplastic Vulcanizate, the Chinese name is Thermoplastic EPDM Dynamic Vulcanizate or Thermoplastic EPDM Dynamic Vulcanizate. It is a polymer composed of highly vulcanized EPDM particles dispersed in a continuous polypropylene PP phase. Elastomeric material. The physical properties and functions of TPV at room temperature are similar to those of thermoset rubber, and it exhibits the characteristics of thermoplastics at high temperature, which can be processed quickly, economically and easily. TPV Thermoplastic EPDM Dynamic Vulcanization Elastomer The vulcanized rubber material is dynamically vulcanized to make the EPDM EPDM dispersed in the polypropylene PP plastic matrix with particles smaller than 2 microns, and the char...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08L23/12C08L23/14C08L23/06C08L23/08C08K13/06C08K9/10C08K9/02C08K9/06C08K9/04C08K3/00C08K5/14C08K5/3492
CPCC08L23/16C08L2201/08C08L2205/035C08L2207/04C08L23/12C08L23/14C08L23/06C08L23/0815C08K13/06C08K9/10C08K9/02C08K9/06C08K9/04C08K3/00C08K5/14C08K5/34924
Inventor 王强
Owner 安徽韧达高分子材料有限公司
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