Acrylate rubber-nylon thermoplastic vulcanzate and preparation method thereof

A thermoplastic vulcanizate and acrylate technology, applied in thermoplastic vulcanizate and its preparation, acrylate rubber/nylon thermoplastic vulcanizate and its preparation field, can solve the problem of high cost, complicated preparation process, unfavorable for vulcanizing agent and accelerator and Other processing aids are fully dispersed to achieve the effect of reducing pollution and excellent oil resistance

Active Publication Date: 2016-01-20
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent CN1508170A discloses a preparation method of thermoplastic vulcanizate. In this method, rubber and plastic are premixed first, then rubber masterbatch is prepared, and then dynamic vulcanization is carried out. This method adds plastic at one time, which is not conducive to vulcanizing agent and accelerator. and other processing aids in rubber, Chinese patent CN101696279A discloses a preparation method of thermoplastic vulcanizate, which prepares reactive one-step material, vulcanizing agent masterbatch and accelerator masterbatch in advance, and then blends and melts Dynamic crosslinking to prepare thermoplastic vulcanizate, although the dispersion is good, but the preparation process is cumbersome and the cost is high

Method used

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  • Acrylate rubber-nylon thermoplastic vulcanzate and preparation method thereof
  • Acrylate rubber-nylon thermoplastic vulcanzate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] An acrylic rubber / nylon thermoplastic vulcanizate with a mass ratio of 70 / 30 was prepared.

[0025] The operation steps are as follows:

[0026] Mix and extrude 189g ternary nylon, 4.41g stearic acid, 2.21g sulfur, 26.46g sodium stearate and 2.65g potassium stearate on a twin-screw extruder at 175°C to obtain master batches. Weigh 75g of the obtained masterbatch and 147g of acrylate rubber for dynamic vulcanization in an internal mixer, the dynamic vulcanization temperature is 170°C, and the rotor speed is 60r / min to obtain acrylate / nylon thermoplastic vulcanizate, which is molded at 170°C for performance testing. The properties of thermoplastic vulcanizates are shown in Table 1.

Embodiment 2

[0028] Acrylate rubber / nylon thermoplastic vulcanizate with a mass ratio of 80 / 20 was prepared. The difference from Example 1 is that the material quality is different.

[0029] The operation steps are as follows:

[0030] 126g of ternary nylon, 5.04g of stearic acid, 2.52g of sulfur, 30.18g of sodium stearate, and 3.02g of potassium stearate were mixed and extruded on a twin-screw extruder at 175°C to obtain master batches. Weigh 55.59g of the obtained masterbatch, 168g of acrylate rubber is dynamically vulcanized in the internal mixer, the dynamic vulcanization temperature is 170°C, and the rotor speed is 60r / min to obtain acrylate / nylon thermoplastic vulcanizate, and the performance test is carried out after molding at 170°C , The properties of thermoplastic vulcanizate are shown in Table 1.

Embodiment 3

[0032] An acrylic rubber / nylon thermoplastic vulcanizate with a mass ratio of 60 / 40 was prepared. The difference from Example 1 is that the material quality is different.

[0033] The operation steps are as follows:

[0034] 252g of ternary nylon, 3.78g of stearic acid, 1.89g of sulfur, 22.68g of sodium stearate, and 2.27g of potassium stearate were mixed and extruded on a twin-screw extruder at 175°C to obtain master batches. Weigh 94.21g of the obtained masterbatch, 126g of acrylate rubber is dynamically vulcanized in an internal mixer, the dynamic vulcanization temperature is 170°C, and the rotor speed is 60r / min to obtain acrylate / nylon thermoplastic vulcanizate, and the performance test is carried out after molding at 170°C , The properties of thermoplastic vulcanizate are shown in Table 1.

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Abstract

The invention discloses acrylate rubber-nylon thermoplastic vulcanizate and a preparation method thereof. The thermoplastic vulcanizate is prepared from, by weight, 40-80 parts of acrylate rubber, 20-60 parts of ternary nylon, 0.5-7 parts of rubber vulcanizers, 0.5-3 parts of vulcanization accelerators, 0.5-2 parts of stearic acid and 0.5-5 parts of anti-aging agents. The thermoplastic vulcanizate has the advantages that the excellent oil resistance and high temperature resistance are achieved, the thermoplasticity is achieved while the high elasticity of the rubber is kept, rubber products can be produced through a plastic producing technology, pollution is reduced, energy conservation and environment protection are achieved, and the thermoplastic vulcanizate can be widely applied to products such as seal parts, rubber pipes and cables.

Description

technical field [0001] The invention belongs to the field of polymer material modification, and relates to a thermoplastic vulcanizate and a preparation method thereof, in particular to an acrylate rubber / nylon thermoplastic vulcanizate and a preparation method thereof. Background technique [0002] Thermoplastic vulcanizate is a new type of polymer material that has the dual characteristics of rubber and plastic, shows high elasticity of rubber at service temperature, and can be plasticized and processed at high temperature. Thermoplastic vulcanizates are generally prepared by dynamic vulcanization technology. Under the mixing action of high temperature field and shear field, the rubber phase is sheared, broken, and dispersed while forming a crosslinked network, and finally dispersed with 1-2μm rubber particles. In the plastic continuous phase, there is no chemical bond interaction between rubber particles, but is surrounded by a thin plastic continuous phase. This special ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/04C08L77/00C08K5/00C08K5/09C08K3/06C08K5/098C08K5/134C08K5/17C08K5/18B29C35/02
Inventor 邱桂学王晓亮夏琳商圆圆
Owner QINGDAO UNIV OF SCI & TECH
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