Polyethylene tearing film and preparation method thereof

A technology of polyethylene and tear film, which is applied in the field of packaging materials, can solve the problems of low elongation at break and low tensile strength of tear film, and achieve the effects of good fluidity, simple raw materials and good wear resistance

Inactive Publication Date: 2015-07-22
SUZHOU DINGLI PACKAGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The invention provides a polyethylene tear film with high elongation at break and high tensile strength and a preparation method thereof, which solves the technical problems of low elongation at break and low tensile strength of the existing tear film

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Step 1: Weigh 100 parts of polyethylene, 0.1 part of antioxidant 1010, 13 parts of barium sulfate, 0.5 part of organic montmorillonite, 0.2 part of silane coupling agent, 1 part of DOP, and 4 parts of nano-titanium dioxide according to the ratio of parts by mass. 1 part, 2 parts of zinc oxide whiskers, 1 part of polyethylene wax, 10 parts of CPE.

[0023] The second step: Put all the raw materials into a high-speed mixer and mix evenly. The temperature of the mixer is 75°C, and mix for 5 minutes.

[0024] The third step: put the mixed material into the single-screw extruder, the temperature of the extruder is 190°C, 200°C, 210°C, 220°C, 230°C, the temperature of the head is 240°C, the temperature of the die is 200°C, and the stretching ratio 6 times.

[0025] The tensile strength of the product is 3g / den, and the elongation at break is 10%. It has low density, good toughness, good wear resistance, high tensile strength, and a linear density of 5kg / m.

Embodiment 2

[0027] Step 1: Weigh 100 parts of polyethylene, 0.2 parts of antioxidant 1010, 15 parts of barium sulfate, 2.5 parts of organic montmorillonite, 0.8 parts of silane coupling agent, 20 parts of DOP, and 16 parts of nano-titanium dioxide according to the ratio of parts by mass. 6 parts of zinc oxide whiskers, 2 parts of polyethylene wax, 30 parts of CPE.

[0028] Step 2: Put all the raw materials into a high-speed mixer and mix evenly. The temperature of the mixer is 95°C, and mix for 15 minutes.

[0029] The third step: put the mixed material into the single-screw extruder, the extruder temperature is 200°C, 210°C, 220°C, 230°C, 240°C, the head temperature is 250°C, the die temperature is 210°C, the stretching ratio 7 times.

[0030] The tensile strength of the product is 3.3g / den, and the elongation at break is 15%. It has low density, good toughness, good wear resistance, high tensile strength, and a linear density of 10kg / m.

Embodiment 3

[0032] Step 1: Weigh 100 parts of polyethylene, 0.12 parts of antioxidant 1010, 13.5 parts of barium sulfate, 1 part of organic montmorillonite, 0.3 parts of silane coupling agent, 5 parts of DOP, and 8 parts of nano-titanium dioxide according to the ratio of parts by mass. 3 parts of zinc oxide whiskers, 1.4 parts of polyethylene wax, and 15 parts of CPE.

[0033] The second step: Put all the raw materials into a high-speed mixer and mix evenly. The temperature of the mixer is 75°C, and mix for 5 minutes.

[0034] The third step: put the mixed material into the single-screw extruder, the temperature of the extruder is 190°C, 200°C, 210°C, 220°C, 230°C, the temperature of the head is 240°C, the temperature of the die is 200°C, and the stretching ratio 6 times.

[0035] The tensile strength of the product is 3.5g / den, and the elongation at break is 20%. It has low density, good toughness, good wear resistance, high tensile strength, and a linear density of 15kg / m.

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Abstract

The invention discloses a polyethylene tearing film and a preparation method thereof. The polyethylene tearing film comprises the following raw materials: polyethylene, an antioxidant, barium sulfate, organic montmorillonite, a silane coupling agent, DOP (dioctyl phthalate), nano titanium dioxide, zinc oxide whiskers, polyethylene wax and CPE (chlorinated polyethylene). The polyethylene tearing film has the tensile strength of 3-4 g / den and the break elongation rate of 10-30%; the polyethylene tearing film is low in density, good in toughness, good in wear resistance and high in tensile strength, and has the linear density of 5-25 kg / m; the polyethylene tearing film is good in heat resistance and good in flowability, the raw materials are simple and easily available, the preparation method is simple, and the polyethylene tearing film can be widely produced and continuously replaces an existing material.

Description

technical field [0001] The invention relates to the technical field of packaging materials, in particular to a polyethylene tear film and a preparation method thereof. Background technique [0002] Polyethylene (PE for short) is a thermoplastic resin obtained by polymerizing ethylene. In industry, it also includes copolymers of ethylene and a small amount of α-olefins. Polyethylene is odorless, non-toxic, feels like wax, has excellent low temperature resistance (the lowest operating temperature can reach -100~-70°C), good chemical stability, and can withstand most acid and alkali erosion (not resistant to oxidation) nature of the acid). Insoluble in common solvents at room temperature, low water absorption, excellent electrical insulation. [0003] A polymer made from vinyl monomers. Polyethylene was synthesized by the British ICI in 1922, industrial production began in 1939, and formal industrial production in the United States. It was an important insulating material ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/28C08K13/06C08K7/08C08K3/30C08K3/34C08K3/22B29C47/92B29C48/92
CPCC08L23/06B29C48/92B29C2948/92704C08J5/18C08J2323/06C08J2423/06C08J2423/28C08K2201/011C08L2201/08C08L2203/16C08L2205/025C08L2205/03C08L23/286C08K13/06C08K9/04C08K3/346C08K7/08C08K2003/3045C08K2003/2241
Inventor 顾建芳
Owner SUZHOU DINGLI PACKAGING
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