Antibacterial toughened polyethylene plastic processing technology

A technology of polyethylene plastic and processing technology, applied in the field of polyethylene plastic processing, can solve the problems of shortening the service life, high price, easy to move out, etc.

Pending Publication Date: 2021-10-22
JIESHOU JINFENG PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Chinese patent CN108892851A discloses a low-density polyethylene antibacterial plastic, including the following raw materials in parts by weight: 80-120 parts of low-density polyethylene, 28-32 parts of acetone, 5-7 parts of isothiazolinone, and 7-11 parts of antibacterial agent parts, 4-6 parts of plasticizer, 3-5 parts of dispersant, 4-8 parts of antioxidant, 5-9 parts of compatibilizer, 25-33 parts of glass fiber; antibacterial agent consists of the following parts by weight Prepared by dividing: 23-30 parts of chitosan, 23-29 parts of benzalkonium chloride, 35-40 parts of phosphorus oxide, 5-10 parts of nano-titanium dioxide; the invention adds a wide variety of antibacterial agents, and the price is relatively expensive , the number of molecules is small, it is easy to move out, and the anti-ultraviolet performance is poor, and it is prone to aging and brittleness, thereby shortening its service life. Therefore, it is currently necessary to provide a polyethylene with good antibacterial properties, anti-ultraviolet and good mechanical properties. Technical issues resolved

Method used

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  • Antibacterial toughened polyethylene plastic processing technology
  • Antibacterial toughened polyethylene plastic processing technology
  • Antibacterial toughened polyethylene plastic processing technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The modified antibacterial agent is made by the following steps:

[0035] Step 1, add 0.1mol 4-methyl-o-phenylenediamine, 0.11mol 3-(trifluoromethyl)pyridine-4-carbaldehyde and 38mL DMF to the there-necked flask, stir for 5min under the condition of rotating speed 60r / min, be warming up to 100 ℃, add 5.2mL Na 2 S 2 O 5 The aqueous solution was heated to 130 °C, and the reaction was stirred for 30 min under the condition of a rotating speed of 100 r / min. After the reaction was completed, the reaction product was transferred to ice water, the product was precipitated, filtered with suction, and the filter cake was washed with deionized water 3 times, and then at 80 °C Dry to constant weight in an oven to obtain intermediate 1, Na 2 S 2 O 5 The aqueous solution consists of Na 2 S 2 O 5 Mixed with deionized water according to 0.58g: 5mL;

[0036] Step 2. Add 0.1 mol of intermediate 1 and 40 mL of DMF into a three-necked flask, add 0.2 g of potassium permanganate an...

Embodiment 2

[0041] The modified antibacterial agent is made by the following steps:

[0042] Step 1. Add 0.1mol 4-methyl-o-phenylenediamine, 0.11mol 3-(trifluoromethyl)pyridine-4-carbaldehyde and 40mL DMF to the there-necked flask, stir for 5min under the condition of rotating speed 70r / min, and heat up to 100 ℃, add 6.3mL Na 2 S 2 O 5 The aqueous solution was heated to 130 ° C, and the reaction was stirred for 40 min under the condition of rotating speed 150 r / min. After the reaction, the reaction product was transferred to ice water, the product was precipitated, suction filtration, and the filter cake was washed with deionized water for 4 times, and then at 80 ° C. Dry to constant weight in an oven to obtain intermediate 1, Na 2 S 2 O 5 The aqueous solution consists of Na 2 S 2 O 5 It is mixed with deionized water according to 0.88g: 5mL;

[0043] Step 2. Add 0.1mol of Intermediate 1 and 43mL of DMF into the three-necked flask, add 0.25g of potassium permanganate and 4.1mL of ...

Embodiment 3

[0048] The modified antibacterial agent is made by the following steps:

[0049] Step 1, add 0.1mol 4-methyl-o-phenylenediamine, 0.11mol 3-(trifluoromethyl)pyridine-4-carbaldehyde and 46mL DMF to the there-necked flask, stir for 5min under the condition of rotating speed 80r / min, be warming up to 100 ℃, add 8.4mL Na 2 S 2 O 5 The aqueous solution was heated to 130 °C, and the reaction was stirred for 50 min under the condition of a rotating speed of 200 r / min. After the reaction was completed, the reaction product was transferred to ice water, the product was precipitated, suction filtration, and the filter cake was washed with deionized water for 5 times, and then at 80 °C Dry to constant weight in an oven to obtain intermediate 1, Na 2 S 2 O 5 The aqueous solution consists of Na 2 S 2 O 5 Mixed with deionized water according to 0.12g: 5mL;

[0050] Step 2. Add 0.1 mol of intermediate 1 and 45 mL of DMF into a three-necked flask, add 0.3 g of potassium permanganate a...

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Abstract

The invention relates to an antibacterial toughened polyethylene plastic processing technology, and belongs to the field of polyethylene plastic processing, and the antibacterial toughened polyethylene plastic processing technology comprises the following steps: 1, preparing the following raw materials in parts by weight: 70-90 parts of high density polyethylene, 1-3 parts of a modified antibacterial agent, 4-10 parts of modified silicon dioxide and 0.5-2 parts of a compatibilizer; 2, adding the raw materials in parts by weight into a mixer, stirring for 20 minutes, heating to 60-70 DEG C, and stirring for 30 minutes to obtain a mixture; and 3, putting the mixture into a twin-screw extruder, keeping the stirring speed of the twin-screw extruder at 220-250r/min and the temperature range of the extruder at 145-200 DEG C, melting, extruding, cooling and granulating to obtain the antibacterial toughened polyethylene plastic. The polyethylene plastic prepared by the method not only has excellent antibacterial property, but also has better ultraviolet absorption property, and the mechanical property of the polyethylene plastic is also improved due to the addition of the modified silicon dioxide.

Description

technical field [0001] The invention belongs to the technical field of polyethylene plastic processing, and in particular relates to an antibacterial and toughened polyethylene plastic processing technology. Background technique [0002] Polyethylene (PE) is a kind of thermoplastic resin prepared by ethylene polymerization. It has excellent electrical insulation performance, chemical stability, low water absorption and can withstand most acid and alkali corrosion. Therefore, it is one of the preferred materials for making packaging films, especially It is the outer packaging film for the whole beer, canned beverage, and bottled beverage. This kind of packaging film is not easy to be damaged, not afraid of moisture, and is very convenient to use. [0003] Chinese patent CN108892851A discloses a low-density polyethylene antibacterial plastic, including the following raw materials in parts by weight: 80-120 parts of low-density polyethylene, 28-32 parts of acetone, 5-7 parts of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L51/06C08K3/36C08K5/3475C08K9/06
CPCC08L23/06C08L2207/062C08L51/06C08K3/36C08K5/3475C08K9/06
Inventor 陈俊青陈军张丽萍
Owner JIESHOU JINFENG PLASTIC
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