Thermoplastic dynamic vulcanizate (TPV) material with excellent pressure change properties and preparation method of TPV

An excellent and high-performance technology, applied in the field of TPV material and its preparation, can solve the problem of high compression set cannot meet the dynamic product application and other problems, and achieve the effect of optimizing dynamic performance, reducing compression set and increasing cross-linking density.

Inactive Publication Date: 2019-11-12
青岛蓝湾烯碳材料科技有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention proposes a formulation and processing method for improving the pressure change performance and cross-linking degree of TPV materials. By controlling the amount of vulcanizing agent, the number of vulcanizing agents added, the amount of oil filling and the way of oil filling, the compression of some TPV materials at present is solved. The permanent deformation is too high to meet the problem of dynamic product application, which has a positive effect on the application of TPV materials in the dynamic field

Method used

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  • Thermoplastic dynamic vulcanizate (TPV) material with excellent pressure change properties and preparation method of TPV
  • Thermoplastic dynamic vulcanizate (TPV) material with excellent pressure change properties and preparation method of TPV
  • Thermoplastic dynamic vulcanizate (TPV) material with excellent pressure change properties and preparation method of TPV

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Embodiment 1

[0026] A kind of TPV material with excellent pressure change performance and preparation method thereof, its formula consists of (weight parts), EPDM70, PP 30, calcium carbonate 30, paraffin oil 30, vulcanizing agent DCP 2, TMPTMA 0.2, paraffin wax 2, antioxidant Agent 0.3, other 5.

[0027] Its preparation method is as follows: firstly, EPDM, PP, calcium carbonate, 1 / 2 paraffin oil and all other processing aids except DCP and TMPTMA are added to the internal mixer in sequence for mechanical mixing to obtain a uniformly mixed product. The compound rubber is then carried out single-screw extrusion granulation by forced feeding and then sent to the twin-screw extruder, and DCP, TMPTMA and the remaining 1 / 2 paraffin oil are added in the middle of the twin-screw extrusion process, and the screw extrusion is set. The output temperature is 190°C, the rotation speed is adjusted, and then the finished TPV material is obtained after twin-screw extrusion and drying.

Embodiment 2

[0029] A kind of TPV material with excellent pressure change performance and preparation method thereof, its formula consists of (weight parts), EPDM70, PP 30, calcium carbonate 30, paraffin oil 30, vulcanizing agent DCP 2, TMPTMA 0.2, paraffin wax 2, antioxidant Agent 0.3, other 5.

[0030] The preparation method is as follows: first, EPDM, PP, calcium carbonate, paraffin oil and all other processing aids except DCP and TMPTMA are added to the internal mixer in order to carry out mechanical mixing to obtain a uniformly mixed mixture. Then carry out single-screw extrusion granulation through forced feeding, and then send it into the twin-screw extruder, and add DCP and TMPTMA in the middle of the twin-screw extrusion process, set the extrusion temperature of the screw to 190 ° C, adjust the speed, and then pass through the twin-screw extruder. The finished TPV material is obtained after screw extrusion and drying.

Embodiment 3

[0032] A kind of TPV material with excellent pressure change performance and preparation method thereof, its formula consists of (weight parts), EPDM70, PP 30, calcium carbonate 30, paraffin oil 30, vulcanizing agent DCP 2.4, TMPTMA 0.24, paraffin wax 2, antioxidant Agent 0.3, other 5.

[0033] The preparation method is as follows: first, EPDM, PP, calcium carbonate, paraffin oil and all other processing aids except DCP and TMPTMA are added to the internal mixer in order to carry out mechanical mixing to obtain a uniformly mixed mixture. Then carry out single-screw extrusion granulation through forced feeding, and then send it into the twin-screw extruder, and add DCP and TMPTMA in the middle of the twin-screw extrusion process, set the extrusion temperature of the screw to 190 ° C, adjust the speed, and then pass through the twin-screw extruder. The finished TPV material is obtained after screw extrusion and drying.

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Abstract

The invention belongs to the technical field of production of a thermoplastic elastomer, and particularly relates to a preparation technology of thermoplastic dynamic vulcanizate (TPV) with excellentpressure change properties. The problem that application requirements of dynamic products cannot be met due to too high permanent compression set of a part of TPV materials is solved mainly by using the preparation process of TPV through control on the use amount of a vulcanizing agent, the number of addition of the vulcanizing agent, the oil filling amount and the oil filling mode, so that the dynamic performance of existing TPV materials is optimized greatly; and finally the TPV material with excellent pressure change properties is obtained, and a positive promotion effect on application ofthe TPV material in the dynamic field is achieved.

Description

technical field [0001] The invention belongs to the technical field of production of thermoplastic elastomers, in particular to a TPV material with excellent pressure change performance and a preparation method thereof. Background technique [0002] TPV material is a kind of thermoplastic elastomer, which is called the third generation rubber in the industry. Its structure is a uniform sea-island phase structure formed by the cross-linked phase of vulcanized rubber after being sheared and broken into particles, and then independently dispersed in the plastic matrix. The rubber phase particles The size is 0.1 ~ 2μm. TPV has the high elasticity, aging resistance and oil resistance of traditional vulcanized rubber, and at the same time has the ease of processing of plastics. It can use various processing techniques such as injection molding, extrusion, and blow molding to improve production efficiency. It has no secondary pollution, and all waste materials can be used for secon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08L23/12C08L53/00C08L91/06C08K3/26C08K5/14
CPCC08K2003/265C08L23/16C08L2205/035C08L23/12C08L53/00C08L91/06C08K3/26C08K5/14
Inventor 陶磊张文静
Owner 青岛蓝湾烯碳材料科技有限责任公司
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