阅读说明：本技术 聚乙烯抗菌塑胶母粒及其制备方法 (Polyethylene antibacterial plastic master batch and preparation method thereof ) 是由 吴学根 于 2020-12-30 设计创作，主要内容包括：本发明涉及一种聚乙烯抗菌塑胶母粒及其制备方法,其中,塑胶母粒由下述重量百分比的组分制成：聚乙烯塑胶颗粒65～75%,高强度聚乙烯塑胶颗粒8～14%,纳米银抗菌塑胶母粒3%～8%,纳米二氧化钛塑胶母粒2%～9%,二甲基硅油2～4%,其余为着色剂。称取好的原料按如上所述组分配比来称取各组分后加入到高速搅拌机中；通过低速搅拌干燥,后通过高速搅拌均匀；最后将搅拌均匀的物料加入到螺杆挤出机中完成造粒。本申请的塑胶母粒最终生产出的塑胶桶的抗菌率达到95%乃至更高,从而延长了食品原料的有效存储周期,但却并非是通过防腐剂之类的添加剂来延长,如此能够有效提升食品安全性。(The invention relates to a polyethylene antibacterial plastic master batch and a preparation method thereof, wherein the plastic master batch is prepared from the following components in percentage by weight: 65-75% of polyethylene plastic particles, 8-14% of high-strength polyethylene plastic particles, 3-8% of nano-silver antibacterial plastic master batch, 2-9% of nano-titanium dioxide plastic master batch, 2-4% of dimethyl silicone oil and the balance of a coloring agent. Weighing the weighed raw materials according to the component proportion, and adding the weighed raw materials into a high-speed stirrer; drying by low-speed stirring, and then uniformly stirring at a high speed; and finally, adding the uniformly stirred materials into a screw extruder to complete granulation. The plastic barrel that the plastic master batch of this application finally produced's antibacterial rate reaches 95% and even higher to prolonged food raw materials's effective storage cycle, but not prolonged through additives such as antiseptic, so can effectively promote food security.)

1. The polyethylene antibacterial plastic master batch is characterized by being prepared from the following components in percentage by weight: 65-75% of polyethylene plastic particles, 8-14% of high-strength polyethylene plastic particles, 3-8% of nano-silver antibacterial plastic master batch, 2-9% of nano-titanium dioxide plastic master batch, 2-4% of dimethyl silicone oil and the balance of a coloring agent.

2. The polyethylene antibacterial plastic master batch according to claim 1, which is prepared from the following components in percentage by weight: 66-74% of polyethylene plastic particles, 9-13% of high-strength polyethylene plastic particles, 4-7% of nano-silver antibacterial plastic master batch, 4-8% of nano-titanium dioxide plastic master batch, 2-4% of dimethyl silicone oil and the balance of colorant.

3. The polyethylene antibacterial plastic master batch according to claim 1, which is prepared from the following components in percentage by weight: 73% of polyethylene plastic particles, 10% of high-strength polyethylene plastic particles, 5% of nano-silver antibacterial plastic master batch, 5% of nano-titanium dioxide plastic master batch, 3% of dimethyl silicone oil and the balance of colorant.

4. The preparation method of the polyethylene antibacterial plastic master batch is characterized by comprising the following processing steps:

weighing the components according to the component proportion of any one of claims 1 to 3, and adding the components into a high-speed stirrer;

drying by low-speed stirring, and then uniformly stirring at a high speed;

and finally, adding the uniformly stirred materials into a screw extruder to complete granulation.

5. The method for preparing polyethylene antibacterial plastic masterbatch according to claim 1, wherein the step of drying by low-speed stirring and then uniformly stirring at a high speed is carried out, wherein the moisture is dried at a low speed of 80-90 r/min, and then the step of stirring at a high speed of 180-200 r/min is carried out for 18-20 minutes.

Technical Field

The invention relates to a polyethylene antibacterial plastic master batch and a preparation method thereof.

Background

At present, plastic packaging containers for chemical products and food in the market are mostly plastic barrels made of polyethylene, the polyethylene has excellent low-temperature resistance (the lowest use temperature can reach-70 ℃ to-100 ℃), good chemical stability, resistance to corrosion of most of acid and alkali (acid with oxidation property), insolubility in common solvents at normal temperature, small water absorption and excellent electrical insulation performance. However, when polyethylene is used to produce plastic barrels for storing food, the plastic barrels have insufficient antibacterial property and anti-infection property, which affects the storage safety, stability and shelf life of the materials.

Therefore, there is a need for a polyethylene plastic drum with antibacterial and bacteriostatic functions, which is made of polyethylene particles to solve the above technical problems.

Disclosure of Invention

The invention aims to provide the polyethylene antibacterial plastic master batch and the preparation method thereof, the produced plastic master batch has high processing efficiency, strong particle ductility and strong tensile resistance among particles, improves the overall strength of the product, and has better antibacterial, bacteriostatic and even bactericidal functions.

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

the invention provides a polyethylene antibacterial plastic master batch which is prepared from the following components in percentage by weight: 65-75% of polyethylene plastic particles, 8-14% of high-strength polyethylene plastic particles, 3-8% of nano-silver antibacterial plastic master batch, 2-9% of nano-titanium dioxide plastic master batch, 2-4% of dimethyl silicone oil and the balance of a coloring agent.

Optionally, the composition is prepared from the following components in percentage by weight: 66-74% of polyethylene plastic particles, 9-13% of high-strength polyethylene plastic particles, 4-7% of nano-silver antibacterial plastic master batch, 4-8% of nano-titanium dioxide plastic master batch, 2-4% of dimethyl silicone oil and the balance of colorant.

Optionally, the composition is prepared from the following components in percentage by weight: 73% of polyethylene plastic particles, 10% of high-strength polyethylene plastic particles, 5% of nano-silver antibacterial plastic master batch, 5% of nano-titanium dioxide plastic master batch, 3% of dimethyl silicone oil and the balance of colorant.

Particularly, the invention also provides a preparation method of the polyethylene antibacterial plastic master batch, which is characterized by comprising the following processing steps:

weighing the components according to the component proportion and adding the components into a high-speed stirrer;

drying by low-speed stirring, and then uniformly stirring at a high speed;

and finally, adding the uniformly stirred materials into a screw extruder to complete granulation.

Optionally, when the drying is carried out by low-speed stirring and then the uniform stirring is carried out by high-speed stirring, the water is dried at a low speed of 80-90 r/min, and then the drying is carried out by high-speed stirring at a high speed of 180-200 r/min for 18-20 minutes.

Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:

the polyethylene antibacterial plastic master batch and the preparation method thereof can prepare the plastic master batch with antibacterial property and antibacterial property, the antibacterial property can overcome the infection of common bacteria such as escherichia coli, staphylococcus aureus, saccharomycetes and the like, and the bacteria are inhibited, so that the antibacterial rate of the finally produced plastic barrel reaches 95% or even higher, the effective storage period of food raw materials is prolonged, but the effective storage period is not prolonged by additives such as preservatives, and the food safety can be effectively improved.

Detailed Description

The technical solutions of the present invention will be described clearly and completely below, and it should be apparent that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Example 1:

the embodiment provides a polyethylene antibacterial plastic master batch, which is prepared by weighing the following components in percentage by weight: 68% of polyethylene plastic particles, 13% of high-strength polyethylene plastic particles, 5% of nano-silver antibacterial plastic master batch, 7% of nano-titanium dioxide plastic master batch, 3% of dimethyl silicone oil and the balance of a colorant.

Adding the weighed materials into a high-speed stirrer, stirring at a low speed of 80-90 r/min in the middle line of the high-speed stirrer, drying water, then stirring at a high speed of 180-200 r/min for 18-20 minutes, finally adding the uniformly stirred materials into a screw extruder, arranging four sections in the screw extruder, keeping the temperature of the four sections different, and keeping the temperature at 180-220 ℃, and finally completing granulation.

Example 2:

the embodiment provides a polyethylene antibacterial plastic master batch, which is prepared by weighing the following components in percentage by weight: 65% of polyethylene plastic particles, 14% of high-strength polyethylene plastic particles, 6% of nano-silver antibacterial plastic master batch, 6% of nano-titanium dioxide plastic master batch, 5% of dimethyl silicone oil and the balance of a colorant.

Adding the weighed materials into a high-speed stirrer, stirring at a low speed of 80-90 r/min in the middle line of the high-speed stirrer, drying water, then stirring at a high speed of 180-200 r/min for 18-20 minutes, finally adding the uniformly stirred materials into a screw extruder, arranging four sections in the screw extruder, keeping the temperature of the four sections different, and keeping the temperature at 180-220 ℃, and finally completing granulation.

Example 3:

the embodiment provides a polyethylene antibacterial plastic master batch, which is prepared by weighing the following components in percentage by weight: 74% of polyethylene plastic particles, 10% of high-strength polyethylene plastic particles, 6% of nano-silver antibacterial plastic master batch, 5% of nano-titanium dioxide plastic master batch, 3% of dimethyl silicone oil and the balance of colorant.

Adding the weighed materials into a high-speed stirrer, stirring at a low speed of 80-90 r/min in the middle line of the high-speed stirrer, drying water, then stirring at a high speed of 180-200 r/min for 18-20 minutes, finally adding the uniformly stirred materials into a screw extruder, arranging four sections in the screw extruder, keeping the temperature of the four sections different, and keeping the temperature at 180-220 ℃, and finally completing granulation.

Example 4:

the embodiment provides a polyethylene antibacterial plastic master batch, which is prepared by weighing the following components in percentage by weight: 73% of polyethylene plastic particles, 10% of high-strength polyethylene plastic particles, 5% of nano-silver antibacterial plastic master batch, 5% of nano-titanium dioxide plastic master batch, 3% of dimethyl silicone oil and the balance of colorant.

Adding the weighed materials into a high-speed stirrer, stirring at a low speed of 80-90 r/min in the middle line of the high-speed stirrer, drying water, then stirring at a high speed of 180-200 r/min for 18-20 minutes, finally adding the uniformly stirred materials into a screw extruder, arranging four sections in the screw extruder, keeping the temperature of the four sections different, and keeping the temperature at 180-220 ℃, and finally completing granulation.

In summary, the polyethylene antibacterial plastic master batch and the preparation method thereof can prepare the plastic master batch with antibacterial property and antibacterial property, the antibacterial property can overcome the infection of common bacteria such as escherichia coli, staphylococcus aureus, saccharomycetes and the like, and the bacteria are inhibited, so that the antibacterial rate of the finally produced plastic barrel reaches 95% or even higher, the effective storage period of food raw materials is prolonged, but the food safety can be effectively improved because the antibacterial rate is not prolonged by additives such as preservatives.

The above embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the invention, and not to limit the scope of the invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention.