Ionic crosslinking thermoplastic elastic body and preparation method thereof

A thermoplastic elastomer and thermoplastic elasticity technology, applied in the field of ion cross-linked thermoplastic elastomer and its preparation, can solve the problems of difficult recycling, environmental pollution, unfavorable sustainable development of polymer materials, etc. Simple process, simple formula and environmentally friendly effect

Active Publication Date: 2012-07-04
FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the polymer material formed by this cross-linking method is thermosetting, which is difficult to recycle and reuse, pollutes the environment, and is not conducive to the sustainable development of polymer materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The preparation of ionically crosslinked thermoplastic elastomer, the weight of the formulation component of its raw material is:

[0024] Nitrile rubber: 100g;

[0025] Tartaric acid: 15g;

[0026] DCP: 0.1g;

[0027] Zinc Oxide: 5g.

[0028] The preparation steps are as follows: 100g of nitrile rubber, 15g of tartaric acid and 0.1g of DCP are placed in an open mill or an internal mixer, and mixed for 15 minutes at 120°C to obtain grafted polar rubber; Mix the above-mentioned grafted polar rubber and 5g of zinc oxide in an open mill or an internal mixer for 10 minutes at 45°C to obtain a mixed rubber; place the mixed rubber on a flat vulcanizer for vulcanization, at a temperature of 150°C, pressure 10MPa, time 20 minutes, the obtained vulcanizate is ionically cross-linked thermoplastic elastomer.

[0029] Table 1 Properties of ionically crosslinked thermoplastic elastomers

[0030] Implementation 1 Hardness, Shore A, degrees 63 Tensile stren...

Embodiment 2

[0032] The preparation of ionically crosslinked thermoplastic elastomer, the weight of the formulation component of its raw material is:

[0033] Hydrogenated nitrile rubber: 100g;

[0034] Tartaric acid: 20g;

[0035] Tert-butyl peroxybenzoate: 0.5g;

[0036] Zinc oxide: 10g.

[0037] The preparation steps are as follows: 100g of hydrogenated nitrile rubber, 20g of tartaric acid and 0.5g of tert-butyl peroxybenzoate are placed in an open mill or an internal mixer, and mixed for 15 minutes at 130°C to obtain Graft polar rubber; mix the above-mentioned graft polar rubber and 10g of zinc oxide in an open mill or internal mixer at 50°C for 15 minutes to obtain a mixed rubber; place the mixed rubber on a flat vulcanizer for vulcanization , at a temperature of 190° C., a pressure of 15 MPa, and a time of 15 minutes, the obtained vulcanizate is an ionically crosslinked thermoplastic elastomer.

[0038] Table 2 Properties of ionically crosslinked thermoplastic elastomers

[0039...

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Abstract

The invention discloses an ionic crosslinking thermoplastic elastic body and a preparation method of the ionic crosslinking thermoplastic elastic body. The ionic crosslinking thermoplastic elastic body is prepared from the following ingredients in parts by mass: 100 parts of rubber, 2 to 20 parts of organic carboxylic acid, 0.1 to 2 parts of initiating agent and 2 to 30 parts of metallic oxide, metal hydroxide and/or metal chloride. The ionic crosslinking thermoplastic elastic body prepared by the method has good mechanical performance, the tensile strength of the ionic crosslinking thermoplastic elastic body at least reaches 6MPa, the tension fracture elongation at least reaches 700 percent, the Shore hardness (A) at least reaches 63, and the differential scanning calorimetry (DSC) glass-transition temperature can reach 10 DEG C. The preparation process of the ionic crosslinking thermoplastic elastic body is simple, and the preparation process and the product are environment-friendly, and the ionic crosslinking thermoplastic elastic body is expected to be widely applied to the fields of shoes, sealing rings, automobiles, oil transmission pipelines and the like.

Description

technical field [0001] The invention relates to an ion-crosslinked thermoplastic elastomer and a preparation method thereof, belonging to the technical field of thermoplastic elastomer preparation. Background technique [0002] Cross-linking is the prerequisite for polymer materials to obtain good physical and chemical properties. The traditional cross-linking process is to form covalent cross-links through sulfur or peroxide, and cross-link linear polymers into a three-dimensional network structure. However, the polymer material formed by this cross-linking method is thermosetting, which is difficult to recycle and reuse, pollutes the environment, and is not conducive to the sustainable development of polymer materials. Therefore, exploring new thermoplastic and environmentally friendly polymer materials has increasingly become a core topic for scientific and industrial exploration. [0003] Thermoplastic elastomer, which is mainly physically cross-linked, is a new type of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L51/04C08L51/06C08L13/00C08K3/22C08K3/16C08J3/24C08F279/02C08F255/10C08F253/00C08F255/06
Inventor 陈庆华陈荣国卓倩肖荔人杨文卿曹长林刘欣萍黄宝铨许兢钱庆荣
Owner FUJIAN NORMAL UNIV
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