阅读说明：本技术 一种抗静电、负离子高释放聚丙烯复合材料及其制备方法和应用 (Antistatic negative ion high-release polypropylene composite material and preparation method and application thereof ) 是由 蒋文远 周海 狄春峰 闫溥 李荣群 于 2019-09-03 设计创作，主要内容包括：本发明公开了一种抗静电、负离子高释放聚丙烯复合材料及其制备方法和应用,其由聚丙烯50~80份,短玻纤10~30份,负离子释放添加剂2~10份,抗静电剂1~10份,润滑剂0.1~1份,抗氧剂0.1~1份,相容剂0.5~5份；所述的负离子释放添加剂是由负离子粉和硅酸镁铝矿物凝胶复配而成的粉体。在聚丙烯材料中,添加抗静电剂、特殊的负离子释放添加剂和其他助剂,优化各组分之间的配比,制得一种抗静电且具有高负离子释放量的聚丙烯复合材料,其不仅能持久释放大量的小粒径负离子,起到抗菌抑菌、祛味除尘、降解环境中的有害VOC等,同时其还具有优异的力学强度,使得其在汽车内、外饰产品中具有广泛的应用前景。(The invention discloses an antistatic negative ion high-release polypropylene composite material and a preparation method and application thereof, wherein the polypropylene composite material comprises 50 ~ 80 parts of polypropylene, 10 ~ 30 parts of chopped glass fiber, 2 ~ 10 parts of negative ion release additive, 1 ~ 10 parts of antistatic agent, 0.1 ~ 1 parts of lubricant, 0.1 ~ 1 parts of antioxidant and 0.5 ~ 5 parts of compatilizer, wherein the negative ion release additive is powder formed by compounding negative ion powder and magnesium-aluminum silicate mineral gel, and the antistatic agent, special negative ion release additive and other additives are added into the polypropylene material to optimize the proportion of the components, so that the antistatic negative ion high-release polypropylene composite material is prepared, can release a large amount of negative ions with small particle size for a long time, plays roles in resisting and inhibiting bacteria, removing odor and removing dust, and degrading harmful VOC (volatile organic compounds) in the environment, and has excellent mechanical strength, so that the antistatic negative ion high-release polypropylene composite material has wide application prospects in interior and exterior products of automobiles.)

1. The antistatic negative ion high-release polypropylene composite material is characterized by comprising the following components in parts by weight:

50 parts of 50 ~ 80 parts of polypropylene, namely,

10 ~ 30 parts of chopped glass fiber, namely 10,

2 ~ 10 parts of negative ion release additive,

1 ~ 10 parts of antistatic agent, namely 1 part of antistatic agent,

0.1 part of lubricant 0.1 ~ 1, and mixing,

0.1 part of antioxidant 0.1 ~ 1, and the like,

0.5 ~ 5 parts of compatilizer;

the anion release additive is powder compounded by anion powder and magnesium aluminum silicate mineral gel.

2. The antistatic, negative ion high release polypropylene composite of claim 1 wherein the polypropylene has a melt flow rate of 10 ~ 100g/10min at 230 ℃ and 2.16 kg.

3. The antistatic, negative ion high release polypropylene composite of claim 1 wherein the chopped glass fiber has a length of 2 ~ 10 mm.

4. The antistatic, negative ion high release polypropylene composite of claim 1 wherein the negative ion release additive has a particle size of 800 ~ 5000 mesh and the weight fraction of magnesium aluminum silicate mineral gel in the negative ion additive is 0.5 ~ 5%.

5. The antistatic, anionic, high release polypropylene composite of claim 1 wherein the antistatic agent is at least one of cationic, anionic, nonionic, polymeric permanent.

6. The antistatic, negative ion high release polypropylene composite of claim 1 wherein the lubricant is at least one of erucamide, calcium stearate, stearamide;

the compatilizer is at least one of cyclic anhydride type, carboxylic acid type and epoxy type;

the antioxidant is at least one of hindered phenol, thioester and phosphite antioxidant.

7. The method of preparing the antistatic, negative ion high release polypropylene composite of claim 1 ~ 6, comprising the steps of:

uniformly mixing polypropylene, an anion release additive, an antistatic agent, a lubricant, an antioxidant and a compatilizer according to a ratio, adding the mixture into a double-screw extruder through a main screw feeding cylinder, melting, mixing and dispersing, adding short glass fibers into the double-screw extruder from a side screw feeding cylinder, and then plasticizing, extruding and granulating to obtain the polypropylene composite material.

8. The method of claim 7, wherein the twin screw extruder has a length to diameter ratio of 35 ~ 50:1, an extrusion temperature of 180 ~ 230 ℃, and a screw speed of 200 ~ 450 r/min.

9. Use of the antistatic, negative ion high release polypropylene composite of any of claim 1 ~ 6 in the preparation of automotive interior and exterior trim.

Technical Field

The invention belongs to the field of high polymer materials, and particularly relates to an antistatic and negative ion high-release polypropylene composite material and a preparation method thereof, and further relates to application of the antistatic and negative ion high-release polypropylene composite material in preparation of automobile interior and exterior decorations.

Background

At present, the production activities of human beings, particularly the industrialization degree is increasingly improved, the pollution is more and more serious, people who live and work in modern air-conditioning buildings for a long time often feel vexation, lethargy, hypodynamia, nausea, headache and dizziness, and the working efficiency and the physical health condition are obviously reduced, and researches show that the reasons for the phenomenon are closely related to the reduction of the concentration of negative ions in the air. In recent years, a great deal of clinical and experimental research is carried out in various countries, so that the practical value of the air negative ions is further confirmed. Thus, the negative ions are likened to "air vitamins" or "auxins" due to their particular efficacy.

With the continuous soundness of environmental regulations and the continuous enhancement of environmental awareness of people, the air quality and VOC level in the automobile also gradually influence the automobile purchasing selection and driving experience of consumers. Therefore, various environment-friendly and healthy functional materials become important material selection directions of various large main engine plants and research hotspots of material manufacturers, and negative ions are gradually developed and applied to the field of automobile materials due to the special effects of the negative ions. The existing polypropylene negative ion composite material generally has the defects of small negative ion release amount, instability and the like.

Disclosure of Invention

Based on the above, the invention provides an antistatic negative ion high-release polypropylene composite material, which is prepared by adding an antistatic agent, a special negative ion release additive and other auxiliary agents into a polypropylene material and optimizing the proportion of the components, and the antistatic negative ion high-release polypropylene composite material can persistently release a large amount of small-particle-size negative ions, has the effects of resisting and inhibiting bacteria, removing odor and dust, degrading harmful VOC (volatile organic compounds) in the environment and the like, can neutralize human body charges, maintain negative potential of cells and maintain human health, and has excellent mechanical strength, so that the antistatic negative ion high-release polypropylene composite material has wide application prospects in interior and exterior products of automobiles.

In order to achieve the purpose, the invention adopts the following technical scheme:

an antistatic negative ion high-release polypropylene composite material comprises the following components in parts by weight:

the anion release additive is powder compounded by anion powder and magnesium aluminum silicate mineral gel.

Further, the melt flow rate of the polypropylene is 10-100 g/10min at 230 ℃ and 2.16 kg.

Further, the length of the short glass fiber is 2-10 mm.

The particle size of the negative ion release additive is 800-5000 meshes, the impact performance of the material can be influenced if the particle size is too large, and the negative ion release effect can be influenced if the powder with too small particle size is easy to agglomerate. The mass fraction of the magnesium aluminum silicate mineral gel in the anion release additive is 0.5-5%, and the anion release additive is compounded by simply blending anion powder and the magnesium aluminum silicate mineral gel. In the invention, the anion powder and the magnesium-aluminum silicate mineral gel are compounded to form the anion release additive, and then the anion release additive is added into the polypropylene material, so that water molecules are released by being sheared by a screw rod in the subsequent extrusion process of the polypropylene material, and the formation of anions is facilitated due to the existence of the water molecules.

Further, the antistatic agent is at least one of cationic, anionic, nonionic and high-molecular permanent type. The cationic antistatic agent may be at least one of quaternary ammonium salts, alkyl imidazoline antistatic agents, etc., the anionic antistatic agent may be at least one of alkyl sulfonate, alkyl sulfate, alkyl phosphate, alkylphenol polyoxyethylene ether sulfate, etc., the nonionic antistatic agent may be at least one of fatty acid polyol ester, alkanolamine, alkanolamide, and adducts of fatty acid, fatty alcohol, and alkylphenol with ethylene oxide, etc., and the polymer permanent antistatic agent may be at least one of hydrophilic polymer antistatic agents and intrinsic conductive polymer antistatic agents. It is understood that the examples are only for the purpose of making the technical solutions of the present invention clearer, and are not intended to limit the scope of the present invention.

Further, the lubricant is at least one of erucamide, calcium stearate and stearic acid amide;

the compatilizer is at least one of cyclic anhydride type, carboxylic acid type and epoxy type, and preferably, the compatilizer is maleic anhydride graft polymer.

The antioxidant is at least one of hindered phenol, thioester and phosphite antioxidant. Preferably, the hindered phenol antioxidant is an antioxidant 1010, the thioester antioxidant is an antioxidant DLTP, and the phosphite antioxidant is an antioxidant 168.

The invention also aims to provide a preparation method of the antistatic negative ion high-release polypropylene composite material, which comprises the following steps:

uniformly mixing polypropylene, an anion release additive, an antistatic agent, a lubricant, an antioxidant and a compatilizer according to a ratio, adding the mixture into a double-screw extruder through a main screw feeding cylinder, melting, mixing and dispersing, adding short glass fibers into the double-screw extruder from a side screw feeding cylinder, and then plasticizing, extruding and granulating to obtain the polypropylene composite material.

Preferably, the length-diameter ratio of the double-screw extruder is 35-50: 1, the extrusion temperature is 180-230 ℃, and the screw rotating speed is 200-450 r/min.

Compared with the prior art, the invention has the following beneficial effects:

1. the invention adopts the negative ion release additive with special radiation safety, and the negative ion release amount is high and is continuous and stable.

2. According to the invention, a special high-efficiency antistatic agent is introduced into the formula design in the formula, so that the interference of friction static electricity on the release of negative ions can be avoided, and the effective retention time of the negative ions of the material in an electrostatic environment is prolonged.

3. The negative ion polypropylene composite material developed by the invention can release negative ions stably and efficiently, can obviously improve the air quality in a vehicle, reduce VOC, remove dust and bacteria, neutralize human charges, keep negative potential of cells and maintain human health.

Detailed Description

In order that the invention may be more fully understood, reference will now be made to the specific embodiments illustrated. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

The copolymerized polypropylene adopted in the following examples and comparative examples is high-crystallinity copolymerized polypropylene BX3800, and the manufacturer is SK martian; the homopolymerized polypropylene is SZ30S, and the manufacturer is SK Wuhan petrochemical; the anion powder and the aluminum silicate mineral gel in the anion release additive are both commercially available and are blended according to the mass fraction ratio, the particle size of the anion powder and the aluminum silicate mineral gel is 800-5000 meshes, and other auxiliary agents are also commercially available.