Organic inorganic hybridized modified attapulgite ethylene propylene terpolymer composite

A technology for modifying attapulgite and EPDM rubber, which is applied in the field of EPDM rubber composite materials, can solve problems such as difficulties in realizing the industrialization of a polymerization process, and achieve good rubber rheological processing performance and good compatibility. , the effect of good mechanical properties

Inactive Publication Date: 2017-06-13
江苏中业登泰新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to realize the industrialization of this in-situ polymerization process.
Attapulgite is applied to EPDM composite materials. At present, conventional surface treatment agents are silane coupling agents and titanate coupling agents (such as: synergistically modified attapulgite on the performance of reinforced EPDM rubber. Impact[J].Journal of China Ceramics,2013,41(1):71-75; Preparation and properties of attapulgite / EPDM nanocomposite[J].Synthetic Rubber Industry,2016,39(1 ):15-19.), but the selection of coupling agent in the above-mentioned modification method and the performance of the modified material have yet to be optimized and improved

Method used

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  • Organic inorganic hybridized modified attapulgite ethylene propylene terpolymer composite
  • Organic inorganic hybridized modified attapulgite ethylene propylene terpolymer composite
  • Organic inorganic hybridized modified attapulgite ethylene propylene terpolymer composite

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Using coupling agent CH 3 (CH 2 ) 15 Si(OCH 3 ) 3For attapulgite treatment, the dosage of coupling agent is 0.3% of attapulgite; for attapulgite treatment with alkaline silica sol (solid content: 25%), the dosage of alkaline silica sol is 3.5% of attapulgite. The specific treatment process is: the attapulgite is sprayed with the above-mentioned organic silicon coupling agent while stirring in a high-speed mixer, and mixed at a high speed of 95°C for 30 minutes; then sprayed with silica sol, and mixed at a high speed of 125°C for 90 minutes to obtain an organic-inorganic hybrid Modified attapulgite.

[0026] The formula of EPDM rubber material is:

[0027]

[0028] The EPDM compound of the above formula was mixed in a rubber internal mixer at room temperature for 40 minutes, and then kneaded in an open mixer to form thin slices, which were cut as required and placed in a flat mold with a thickness of 10mm. The flat mold with EPDM rubber inside is vulcanized in a...

Embodiment 2

[0030] Using coupling agent [CH 3 (CH 2 ) 17 ] 2 Si(OCH 2 CH 3 ) 2 For attapulgite treatment, the dosage of coupling agent is 0.4% of attapulgite; for attapulgite treatment with alkaline silica sol (solid content: 28%), the dosage of alkaline silica sol is 5.5% of attapulgite. The specific treatment process is: the attapulgite is sprayed with the above-mentioned organic silicon coupling agent while stirring in a high-speed mixer, and mixed at a high speed of 90°C for 30 minutes; then sprayed with silica sol, and mixed at a high speed of 115°C for 90 minutes to obtain an organic-inorganic hybrid Modified attapulgite.

[0031] The formula of EPDM rubber material is:

[0032]

[0033]

[0034] The EPDM rubber material of the above formula was mixed in a rubber internal mixer at room temperature for 55 minutes, and then rolled into thin slices with an open mixer, cut as required and placed in a flat mold with a thickness of 12mm. The flat mold with EPDM rubber inside...

Embodiment 3

[0036] Using coupling agent [CH 3 (CH 2 ) 19 ] 3 SiOCH 2 CH 3 For attapulgite treatment, the dosage of coupling agent is 0.15% of attapulgite; for attapulgite treatment with alkaline silica sol (solid content: 22%), the dosage of alkaline silica sol is 7.5% of attapulgite. The specific treatment process is: the attapulgite is sprayed with the above-mentioned organic silicon coupling agent while stirring in a high-speed mixer, and mixed at a high speed of 90°C for 30 minutes; then sprayed with silica sol, and mixed at a high speed of 125°C for 90 minutes to obtain an organic-inorganic hybrid Modified attapulgite.

[0037] The formula of EPDM rubber material is:

[0038]

[0039] The EPDM rubber material of the above formula was mixed in a rubber internal mixer at room temperature for 38 minutes, then rolled into thin slices with an open mixer, cut as required and placed in a flat mold with a thickness of 13 mm. The flat mold with EPDM rubber inside is vulcanized in a ...

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Abstract

The invention discloses an organic inorganic hybridized modified attapulgite ethylene propylene terpolymer composite. The invention develops a novel organic silicon coupling reagent which is combined with a silicon sol and an organic inorganic hybridized surface modified attapulgite. The novel organic silicon coupling reagent is used for filling and modifying ethylene propylene terpolymer, so that the organic inorganic hybridized modified attapulgite ethylene propylene terpolymer composite with high performance can be acquired. The organic inorganic hybridized modified attapulgite ethylene propylene terpolymer composite provided by the invention is prepared from the following raw materials in parts by weight: 100 parts of ethylene propylene terpolymer, 100-500 parts of organic inorganic hybridized modified attapulgite, 10-30 parts of paroline, 0.5-4 parts of sulphur and 0.5-4 parts of vulcanizing agent.

Description

technical field [0001] The invention relates to an EPDM composite material, in particular to an organic-inorganic hybrid modified attapulgite EPDM composite material. Background technique [0002] Ethylene propylene dien monomer (EPDM) has high aging resistance, excellent corrosion resistance, water resistance, oil resistance, and excellent insulation properties, and is widely used in sealing devices, electrical insulation products, and outdoor sports equipment products Wait. However, since EPDM is an amorphous rubber, reinforcement is required to obtain better performance indicators. The conventional EPDM reinforcing material is carbon black, and the filling fraction and particle size of carbon black affect the performance of the reinforcing rubber. Although carbon black reinforced EPDM can obtain good physical properties, only black EPDM rubber composite products can be produced. Nano-inorganic minerals such as montmorillonite, light calcium, silica, and clay are rich i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/16C08L91/06C08K13/06C08K9/12C08K9/06C08K3/34C08K3/36C08K3/06
CPCC08L23/16C08K2201/011C08L91/06C08K13/06C08K9/12C08K9/06C08K3/346C08K3/36C08K3/06
Inventor 闫波林敦玉陈庆栋
Owner 江苏中业登泰新材料科技有限公司
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