Environment-friendly antistatic agent for TPEE material and preparation method thereof

Abstract

The invention relates to an environment-friendly antistatic agent for a TPEE material and a preparation method of the environment-friendly antistatic agent, and belongs to the technical field of high polymer material additives. The antistatic agent comprises 62%-68% of isobutanol, 6%-9% of N-methyl pyrrolidone, 8%-12% of antistatic active component long-chain alkyl quaternary ammonium salt, 8%-11% of polyethylene glycol, 8%-11% of zinc acetate and 0.2%-0.5% of edible essence. Through reasonable proportioning of the components, the antistatic agent and the TPEE material have good compatibility, the surface resistance of the TPEE material can be effectively reduced, the TPEE material is endowed with lasting and stable antistatic performance, meanwhile, the odor of the material is improved, and the antistatic agent is simple in preparation process, controllable in cost and suitable for industrial production.

Description

Technical Field

[0001] This application relates to polymer material additives and their preparation methods, and in particular to an environmentally friendly antistatic agent for TPEE materials and its preparation method. Background Technology

[0002] Thermoplastic polyester elastomer (TPEE) is a polymer material that combines the elasticity of rubber with the processability of plastics. Due to its excellent mechanical properties, fatigue resistance, and weather resistance, it is widely used in automotive parts, electronics, and medical devices. However, TPEE is an insulating material, and during processing and use, it is prone to static electricity buildup due to friction. This static electricity not only attracts dust, affecting product appearance and performance, but may also pose safety hazards in flammable and explosive environments. Therefore, antistatic modification is necessary.

[0003] In existing technologies, two methods are commonly used to improve the antistatic properties of thermoplastic polyester elastomers (TPEE): one is to add an internal antistatic agent, which enhances antistatic properties through blending with the TPEE; the other is to apply an external antistatic agent to the material surface through coating or immersion. While these two methods improve antistatic performance to some extent, they still have some shortcomings in practical applications.

[0004] While the methods described above can improve antistatic performance to some extent, existing technologies still have significant drawbacks. Specifically: first, internal antistatic agents need to be blended with the polymer, resulting in poor compatibility with the matrix and requiring large amounts for long-lasting antistatic effects; second, external antistatic agents are applied to the material surface through coating or immersion, offering advantages such as ease of use and low dosage, but traditional external antistatic agents suffer from poor migration resistance, unstable antistatic effects, and insufficient adhesion to TPEE materials. These problems limit the application of thermoplastic polyester elastomers (TPEE) in the high-end market, necessitating the development of new technological solutions to address these issues. Summary of the Invention

[0005] The purpose of this application is to overcome the defects of existing antistatic agents used for TPEE materials, such as poor compatibility and unstable effect, and to provide an environmentally friendly antistatic agent for TPEE materials and its preparation method.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: An environmentally friendly antistatic agent for TPEE materials comprises the following components and their weight percentages: 62%-68% isobutanol, 6%-9% N-methylpyrrolidone, 8%-12% long-chain alkyl quaternary ammonium salt of antistatic active ingredient, 8%-11% polyethylene glycol, 8%-11% zinc acetate, and 0.2%-0.5% food flavoring.

[0007] By adopting the above technical solution, isobutanol, as the main solvent, can adjust the volatility and coatability of the antistatic agent, making it easier to adhere evenly to the material surface.

[0008] N-methylpyrrolidone, as an auxiliary polar solvent, can further improve the solubility stability of long-chain alkyl quaternary ammonium salts and zinc acetate in the mixed system, while enhancing the intermolecular forces between the antistatic agent and the TPEE matrix and reducing the coating migration rate.

[0009] Long-chain alkyl quaternary ammonium salts, as the main antistatic active ingredients, can form conductive pathways on the surface of TPEE materials, promoting charge dissipation.

[0010] Polyethylene glycol, as a co-solvent, can enhance the solubility of long-chain alkyl quaternary ammonium salts and zinc acetate, while improving the interfacial bonding between antistatic agents and TPEE materials.

[0011] Zinc acetate, as an electrolyte, can replenish conductive ions and improve antistatic efficiency.

[0012] Food flavorings are used to mask off-flavors of raw materials and improve the user experience of products.

[0013] Synergistic effects can be formed among the components: the combination of N-methylpyrrolidone, polyethylene glycol and isobutanol can ensure solvent volatility to achieve rapid film formation, and improve the solubility of long-chain alkyl quaternary ammonium salt and zinc acetate; the combination of zinc acetate and long-chain alkyl quaternary ammonium salt can supplement conductive ions and enhance the stability of conductive pathways, thereby achieving a long-lasting and stable antistatic effect while ensuring good compatibility with TPEE materials.

[0014] Preferably, the isobutanol has a weight percentage of 63%-67%.

[0015] Preferably, the N-methylpyrrolidone has a weight percentage of 7%-8%.

[0016] Preferably, the antistatic active ingredient, long-chain alkyl quaternary ammonium salt, has a weight percentage of 9%-11%.

[0017] Preferably, the polyethylene glycol has a weight percentage of 9%-10%.

[0018] Preferably, the zinc acetate has a weight percentage of 9%-10%.

[0019] Preferably, the weight percentage of the edible flavoring is 0.3%-0.4%.

[0020] A method for preparing an environmentally friendly antistatic agent for TPEE materials includes the following steps: a. Preparation of mixed solvent: Weigh isobutanol, N-methylpyrrolidone and polyethylene glycol according to the proportion, add them to the reaction vessel, and stir for 5-10 minutes at 25-35℃ and 300-500r / min to ensure thorough mixing; b. Dissolution of active components: Add the antistatic active ingredient long-chain alkyl quaternary ammonium salt and zinc acetate to the mixed solvent in sequence, keep the temperature and speed constant, and stir for 15-20 minutes to make the active components completely dissolved and evenly dispersed; c. Flavoring and mixing: Reduce the stirring speed to 100-200 r / min, add the edible flavoring, and continue stirring for 3-5 minutes. Avoid high-speed stirring to prevent the edible flavoring from evaporating. After mixing evenly, the finished antistatic agent can be obtained.

[0021] In summary, by compounding isobutanol (62%-68%), N-methylpyrrolidone (6%-9%), long-chain alkyl quaternary ammonium salt (8%-12%), polyethylene glycol (8%-11%), zinc acetate (8%-11%), and food flavoring (0.2%-0.5%), the aim is to achieve excellent and long-lasting antistatic effects, good compatibility, simple preparation process, and improved user experience. Detailed Implementation

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below. The described embodiments are only possible technical implementations of the present invention and not all possible implementations. Those skilled in the art can obtain other embodiments in conjunction with the embodiments of the present invention without creative effort, and these embodiments are also within the protection scope of the present invention.

[0023] Example 1 An environmentally friendly antistatic agent for TPEE materials, comprising the following components by weight percentage: 10% long-chain alkyl quaternary ammonium salt, 10% polyethylene glycol, 63.7% isobutanol, 7% N-methylpyrrolidone, 9% zinc acetate, and 0.3% food flavoring.

[0024] Its preparation methods include: a. Add 63.7g isobutanol, 7g N-methylpyrrolidone and 10g polyethylene glycol to a three-necked flask and stir at 400r / min for 8min at 30℃ to obtain a mixed solvent; b. Add 10g of long-chain alkyl quaternary ammonium salt and 9g of zinc acetate to the mixed solvent, and stir for 18min at 30℃ and 400r / min. c. Reduce the rotation speed to 150 r / min, add 0.3 g of food flavoring, stir for 4 min, and obtain the antistatic agent product.

[0025] The antistatic agent was sprayed onto the surface of TPEE board at an addition rate of 2 wt%, and its performance was tested after drying at 60℃ for 10 min: the surface resistivity was 2.5 × 10⁻⁶. 7 Ω, after 500 cycles of rubbing, the surface resistivity is 7.2 × 10⁻⁶. 7 Ω, no coating peeling, and no obvious odor.

[0026] Example 2 An environmentally friendly antistatic agent for TPEE materials, comprising the following components by weight percentage: 9.6% long-chain alkyl quaternary ammonium salt, 9% polyethylene glycol, 63% isobutanol, 8% N-methylpyrrolidone, 10% zinc acetate, and 0.4% food flavoring.

[0027] The preparation method is the same as in Example 1, maintaining consistent process parameters such as temperature and rotation speed. Test results show that the surface resistivity of the TPEE board is 3.0 × 10⁻⁶. 7 Ω, the surface resistance after 500 rubs is 7.5 × 10⁻⁶. 7 Ω, good compatibility, mild odor.

[0028] Comparative Example 1 Except for replacing the zinc acetate with an equal amount of isobutanol, the other components and preparation method were the same as in Example 1. Test results showed that the surface resistivity of the TPEE sheet was 2.0 × 10⁻⁶. 8 Ω, the antistatic effect is significantly worse than that of Example 1.

[0029] Comparative Example 2 Except for replacing the polyethylene glycol with an equal amount of isobutanol, the other components and preparation method were the same as in Example 1. Test results showed that the antistatic agent partially detached from the TPEE board surface, and the surface resistivity increased to 8.7 × 10¹ after 500 cycles of friction. 0 Ω has poor compatibility.

[0030] The above examples and comparative examples demonstrate that the antistatic agent of the present invention, through the synergistic effect of its components, can provide TPEE materials with excellent and durable antistatic properties, while also exhibiting good compatibility and user experience.

Claims

1. An environmentally friendly antistatic agent for TPEE materials, characterized in that, It includes the following components and their weight percentages: isobutanol 62%-68%, N-methylpyrrolidone 6%-9%, antistatic active ingredient long-chain alkyl quaternary ammonium salt 8%-12%, polyethylene glycol 8%-11%, zinc acetate 8%-11%, and food flavoring 0.2%-0.5%.

2. The environmentally friendly antistatic agent for TPEE materials according to claim 1, characterized in that, The isobutanol is 63%-67% by weight.

3. The environmentally friendly antistatic agent for TPEE materials according to claim 1, characterized in that, The N-methylpyrrolidone is 7%-8% by weight.

4. The environmentally friendly antistatic agent for TPEE materials according to claim 1, characterized in that, The antistatic active ingredient, long-chain alkyl quaternary ammonium salt, has a weight percentage of 9%-11%.

5. The environmentally friendly antistatic agent for TPEE materials according to claim 1, characterized in that, The polyethylene glycol is 9%-10% by weight.

6. The environmentally friendly antistatic agent for TPEE materials according to claim 1, characterized in that, The zinc acetate is 9%-10% by weight.

7. The environmentally friendly antistatic agent for TPEE materials according to claim 1, characterized in that, The weight percentage of the edible flavoring is 0.3%-0.4%.

8. A method for preparing an environmentally friendly antistatic agent for TPEE materials as described in any one of claims 1-7, characterized in that, Includes the following steps: a. Weigh isobutanol, N-methylpyrrolidone and polyethylene glycol according to the proportion, add them to the reaction vessel, and stir at 300-500 r / min for 5-10 min at 25-35℃ to obtain a mixed solvent; b. Add the antistatic active ingredient long-chain alkyl quaternary ammonium salt and zinc acetate sequentially to the mixed solvent obtained in step a, keep the temperature and speed constant, and continue stirring for 15-20 minutes to ensure that the components are fully dissolved and dispersed; c. Reduce the stirring speed to 100-200 r / min, add the edible flavoring, stir for 3-5 minutes, and after mixing evenly, the antistatic agent is obtained.

9. The application of an environmentally friendly antistatic agent for TPEE materials prepared by the method described in claim 8, characterized in that, The amount of antistatic agent added to the TPEE material is 1-3 wt%.