Preparation method of low-hardness and high-transparency polyether amide permanent antistatic agent

Abstract

The invention discloses a preparation method of a low-hardness and high-transparency polyether amide permanent antistatic agent, and belongs to the technical field of antistatic agents. The preparation method comprises the two steps: (1) preparing a polyetheramide elastomer from long-carbon-chain polyamide, a molecular chain plasticizer and polyether; and (2) uniformly mixing the polyether amide elastomer, an alkali metal salt, a surfactant and filling oil, and preparing the low-hardness and high-transparency polyether amide permanent antistatic agent by an extrusion processing method. The adopted method is simple and is easy to operate, the prepared permanent antistatic agent is low in hardness, high in transparency, good in toughness, low in water absorption rate, low in surface electrical resistivity and lasting in antistatic effect, can be mixed with other resin to prepare antistatic materials, and is widely applied to the fields of electronic and electrical components, precise instrument shells, hoses, sealing materials, sports goods and the like which have low requirements on hardness and are antistatic.

Description

technical field [0001] The invention relates to a preparation method of a low-hardness, high-transparency polyetheramide permanent antistatic agent, which belongs to the field of synthesis and preparation of high-performance materials. Background technique [0002] Because polymer materials have the characteristics of light weight, wear resistance, corrosion resistance, excellent mechanical properties, and easy processing, their market share has been increasing in recent years, and they are gradually used in electronic products, construction, packaging, office, automobile, Military equipment, daily necessities and other fields. However, the vast majority of polymer materials are electrical insulating materials with relatively high resistivity, and are prone to accumulate charges during their processing or use, which are difficult to remove, and the accumulation of a large amount of charges is likely to cause adverse effects. Once the polymer material or finished product gen...

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Problems solved by technology

[0006] At present, the products of polymer permanent antistatic agents on the market are basically monopolized by foreign countries, mainly including MF, MH, and MV series products of Arkema PEBAX in France, Irgastat P series antistatic agents of BASF in Germany and Pelestat of Japan Sanyo Chemical Industry Co., Ltd. , Pelectron series antistatic agents, etc.; the production of these products is still in the development stage in China, and their prices are relatively high. At the same time, the products related to permanent antistatic agents with low hardness are relatively limited. These factors limit their development and application.

[0007] In the prior art, the hardness of mature polyether amide elastomer products is mostly above 25D, and the research involving the simultaneous polymerization of long carbon chain polyamide and molecular chain plasticizer to prepare low hardness polyether amide is rare; at the same time , the process of preparing permanent antistatic agent by means of coordination and complexation of polyether and alkali metal salt. To achieve good antistatic effect, alkali metal salt is mostly crystalline salt, which is simply melted and extruded with polyether amide During the processing, there is a phenomenon that the color of the product becomes black and gray due to serious salt accumulation or thermal oxidation, which is not conducive to the preparation of a permanent antistatic agent with high transparency

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