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Thermoplastic elastomer composition as well as preparation method and application thereof

A thermoplastic elastomer and composition technology, which is applied in the field of thermoplastic elastomer composition and its preparation, can solve the problems of difficult dispersion of carbon black, easy loosening and falling off of adhesive layer, inability to meet the requirements of PP caster rubber coating, etc. Good effect, strong encapsulation effect

Pending Publication Date: 2022-03-11
GUANGZHOU SUPER DRAGON ENG PLASTICS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most of the TPE materials used to make the coating layer on the market use carbon black as an antistatic agent. Carbon black is difficult to disperse and has a great impact on the physical properties of low-hardness TPE.
If TPE with added carbon black is applied to the lagging of polypropylene (PP) casters, the adhesion of the lagging layer is prone to be weak, and the rubber layer is easy to loosen and fall off during the rolling and vibration of the caster, causing the caster to be damaged. Problems that don't work
In related technologies, organopolymer siloxane materials are also used as antistatic agents. The antistatic effect is very good, but the effect of encapsulation on PP casters is not ideal.
However, the existing TPE materials cannot meet the requirements of PP caster lagging

Method used

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  • Thermoplastic elastomer composition as well as preparation method and application thereof
  • Thermoplastic elastomer composition as well as preparation method and application thereof
  • Thermoplastic elastomer composition as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～5

[0054] Embodiments 1-5 provide a series of thermoplastic elastomer compositions, the component contents are shown in Table 1, and the preparation method is as follows:

[0055] S1. First put SEBS and white oil into a high mixer and mix for 3 to 5 minutes to obtain a premix;

[0056] S2. Mix the premix, antistatic agent, compatibilizer and antioxidant in step S1 for 3 to 5 minutes;

[0057] S3. Melt, extrude, cool and granulate the mixture in step S3 in a screw machine. The rotating speed of the screw machine is 300-600 rpm, and the processing temperature is 180-200°C.

[0058] The component content (part) of table 1 embodiment 1~5

[0059] Example 1 Example 2 Example 3 Example 4 Example 5 SEBS 33 33 33 33 33 white oil 43 43 43 43 43 Antistatic agent A 18 — — — — Antistatic agent B — 18 — — — Antistatic agent C — — 18 — — Antistatic agent D — — — 18 — Antistatic agent E — — — — 18 Co...

Embodiment 6～8 and comparative example 1～2

[0061] Examples 6-8 and Comparative Examples 1-2 provide a series of thermoplastic elastomer compositions, the preparation method of which is the same as that of Example 1, and the contents of the components are shown in Table 2.

[0062] Table 2 embodiment 6~8 component content (part)

[0063] Example 6 Example 7 Example 8 Comparative example 1 Comparative example 2 SEBS 33 30 40 33 33 white oil 43 30 45 43 43 Antistatic agent C 18 14 22 — — Antistatic agent F — — — 18 — Antistatic agent G — — — — 18 Compatibilizer A — 10 3 5 5 Compatibilizer B 5 — — — — antioxidant 0.2 0.2 1 0.2 0.2

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PUM

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Abstract

The invention discloses a thermoplastic elastomer composition as well as a preparation method and application thereof. The composition comprises the following components in parts by weight: 30-40 parts of SEBS; 30 to 45 parts of white oil; 14 to 22 parts of an antistatic agent; 3-10 parts of a compatilizer; the antistatic agent is a carbon nanotube master batch taking grafted polypropylene as a carrier. According to the invention, the carbon nanotube master batch taking grafted polypropylene as a carrier is selected as the antistatic agent to be added into the system, so that the composition has the effects of permanent antistatic property and low hardness, and can meet the requirements of PP trundle rubber coating, and the TPE composition disclosed by the invention is used for coating PP more firmly.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a thermoplastic elastomer composition and its preparation method and application. Background technique [0002] Thermoplastic Elastomer (TPE for short) is a material that not only has the characteristics of high elasticity, high strength and high resilience of rubber, but also has the characteristics of injection molding. TPE has many advantages such as environmental protection, non-toxic safety, wide hardness range, excellent colorability, soft touch, weather resistance, fatigue resistance, temperature resistance, superior processing performance and no need for vulcanization. Therefore, as a new type of multi-functional Environmentally friendly materials, TPE has a very broad application market. [0003] With the popularization of the application of intelligent robots, the application of antistatic casters is gradually increasing. The casters are mainly P...

Claims

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Application Information

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IPC IPC(8): C08L53/02C08L91/06C08K9/12C08K3/04
CPCC08L53/025C08K2201/011C08K2201/017C08L2207/04C08L91/06C08K9/12C08K3/041
Inventor 郝建鑫徐瑞敬邓爵安索阳阳周国庆
Owner GUANGZHOU SUPER DRAGON ENG PLASTICS
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