High toughness and impact resistant PE film and preparation method thereof

Abstract

The invention discloses a high toughness and impact resistant PE film, which is prepared from the following raw materials in parts by weight: 65 to 70 parts of low density polyethylene, 22 to 26 partsof metallocene linear low density polyethylene, 9 to 13 parts of medium density polyethylene, 6 to 10 parts of polyvinyl butyral, 0.8 to 1.2 parts of erucyl amide, 1.5 to 1.9 parts of antioxidant, 0.3 to 0.6 part of sodium abietate, 0.7 to 1.1 parts of calcium-zinc composite stabilizer, 1 to 2 parts of nano titanium dioxide, and 2 to 3 parts of cellulose acetate. The invention also discloses a preparation method of the high toughness and impact resistant PE film. The prepared high toughness and impact resistant PE film has excellent toughness and impact resistant performance and can meet therequirements on package protective films in certain special occasions, and the application range of PE film is enlarged.

Description

technical field

[0001] The invention relates to the technical field of packaging materials, in particular to a high-toughness and impact-resistant PE film and a preparation method thereof. Background technique

[0002] Polyethylene (referred to as PE) is a thermoplastic resin obtained by polymerization of 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 ° C ~ -70 ° C), good chemical stability, and can withstand most acid and alkali erosion (not resistant to oxidation) nature of the acid). It is insoluble in common solvents at room temperature, has low water absorption and excellent electrical insulation, so it is widely used in various industries. Polyethylene film is the most widely used polymer material in the world today. PE protective film is based on special polyethylene (PE) pla...

Examples

Embodiment 1

[0021] A high-toughness and impact-resistant PE film is made of the following raw materials in parts by weight: 65 parts of low-density polyethylene, 22 parts of metallocene linear low-density polyethylene, 9 parts of medium-density polyethylene, polyvinyl butyral 6 parts of aldehydes, 0.8 parts of erucamide, 1.5 parts of antioxidant, 0.3 parts of sodium rosinate, 0.7 parts of calcium-zinc composite stabilizer, 1 part of nano-titanium dioxide, and 2 parts of cellulose acetate. Wherein, the antioxidant is composed of antioxidant 1076 and antioxidant DLTP, and the weight ratio of antioxidant 1076 and antioxidant DLTP in the antioxidant is 2:5.

[0022] In the present embodiment, the preparation method of the high-toughness and impact-resistant PE film, the steps are as follows:

[0023] 1) Weigh sodium rosinate and nano-titanium dioxide, put them into a magnetic stirrer, and stir and mix at 65°C for 20 minutes to obtain the first mixture;

[0024] 2) Maintain the temperature of...

Embodiment 2

[0029] A high-toughness and impact-resistant PE film is made of the following raw materials in parts by weight: 66 parts of low-density polyethylene, 23 parts of metallocene linear low-density polyethylene, 10 parts of medium-density polyethylene, polyvinyl butyral 9 parts of aldehydes, 1.1 parts of erucamide, 1.8 parts of antioxidant, 0.4 parts of sodium rosinate, 0.8 parts of calcium-zinc composite stabilizer, 1.7 parts of nano-titanium dioxide, and 2.8 parts of cellulose acetate. Wherein, the antioxidant is composed of antioxidant 1076 and antioxidant DLTP, and the weight ratio of antioxidant 1076 and antioxidant DLTP in the antioxidant is 2:5.

[0030] In the present embodiment, the preparation method of the high-toughness and impact-resistant PE film, the steps are as follows:

[0031] 1) Weigh sodium rosinate and nano-titanium dioxide, put them into a magnetic stirrer, and stir and mix at 67°C for 22 minutes to obtain the first mixture;

[0032] 2) Maintain the temperat...

Embodiment 3

[0037] A high-toughness and impact-resistant PE film is made of the following raw materials in parts by weight: 67 parts of low-density polyethylene, 24 parts of metallocene linear low-density polyethylene, 11 parts of medium-density polyethylene, polyvinyl butyral 8 parts of aldehydes, 1 part of erucamide, 1.7 parts of antioxidant, 0.5 parts of sodium rosinate, 0.9 parts of calcium-zinc composite stabilizer, 1.5 parts of nano-titanium dioxide, and 2.6 parts of cellulose acetate. Wherein, the antioxidant is composed of antioxidant 1076 and antioxidant DLTP, and the weight ratio of antioxidant 1076 and antioxidant DLTP in the antioxidant is 2:5.

[0038] In the present embodiment, the preparation method of the high-toughness and impact-resistant PE film, the steps are as follows:

[0039] 1) Weigh sodium rosinate and nano-titanium dioxide, put them into a magnetic stirrer, stir and mix at 68°C for 23 minutes, and obtain the first mixture;

[0040] 2) Maintain the temperature o...

technical field

[0001] The invention relates to the technical field of packaging materials, in particular to a high-toughness and impact-resistant PE film and a preparation method thereof. Background technique

[0002] Polyethylene (referred to as PE) is a thermoplastic resin obtained by polymerization of 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 ° C ~ -70 ° C), good chemical stability, and can withstand most acid and alkali erosion (not resistant to oxidation) nature of the acid). It is insoluble in common solvents at room temperature, has low water absorption and excellent electrical insulation, so it is widely used in various industries. Polyethylene film is the most widely used polymer material in the world today. PE protective film is based on special polyethylene (PE) pla...

Examples

Embodiment 1

[0021] A high-toughness and impact-resistant PE film is made of the following raw materials in parts by weight: 65 parts of low-density polyethylene, 22 parts of metallocene linear low-density polyethylene, 9 parts of medium-density polyethylene, polyvinyl butyral 6 parts of aldehydes, 0.8 parts of erucamide, 1.5 parts of antioxidant, 0.3 parts of sodium rosinate, 0.7 parts of calcium-zinc composite stabilizer, 1 part of nano-titanium dioxide, and 2 parts of cellulose acetate. Wherein, the antioxidant is composed of antioxidant 1076 and antioxidant DLTP, and the weight ratio of antioxidant 1076 and antioxidant DLTP in the antioxidant is 2:5.

[0022] In the present embodiment, the preparation method of the high-toughness and impact-resistant PE film, the steps are as follows:

[0023] 1) Weigh sodium rosinate and nano-titanium dioxide, put them into a magnetic stirrer, and stir and mix at 65°C for 20 minutes to obtain the first mixture;

[0024] 2) Maintain the temperature of...

Embodiment 2

[0029] A high-toughness and impact-resistant PE film is made of the following raw materials in parts by weight: 66 parts of low-density polyethylene, 23 parts of metallocene linear low-density polyethylene, 10 parts of medium-density polyethylene, polyvinyl butyral 9 parts of aldehydes, 1.1 parts of erucamide, 1.8 parts of antioxidant, 0.4 parts of sodium rosinate, 0.8 parts of calcium-zinc composite stabilizer, 1.7 parts of nano-titanium dioxide, and 2.8 parts of cellulose acetate. Wherein, the antioxidant is composed of antioxidant 1076 and antioxidant DLTP, and the weight ratio of antioxidant 1076 and antioxidant DLTP in the antioxidant is 2:5.

[0030] In the present embodiment, the preparation method of the high-toughness and impact-resistant PE film, the steps are as follows:

[0031] 1) Weigh sodium rosinate and nano-titanium dioxide, put them into a magnetic stirrer, and stir and mix at 67°C for 22 minutes to obtain the first mixture;

[0032] 2) Maintain the temperat...

Embodiment 3

[0037] A high-toughness and impact-resistant PE film is made of the following raw materials in parts by weight: 67 parts of low-density polyethylene, 24 parts of metallocene linear low-density polyethylene, 11 parts of medium-density polyethylene, polyvinyl butyral 8 parts of aldehydes, 1 part of erucamide, 1.7 parts of antioxidant, 0.5 parts of sodium rosinate, 0.9 parts of calcium-zinc composite stabilizer, 1.5 parts of nano-titanium dioxide, and 2.6 parts of cellulose acetate. Wherein, the antioxidant is composed of antioxidant 1076 and antioxidant DLTP, and the weight ratio of antioxidant 1076 and antioxidant DLTP in the antioxidant is 2:5.

[0038] In the present embodiment, the preparation method of the high-toughness and impact-resistant PE film, the steps are as follows:

[0039] 1) Weigh sodium rosinate and nano-titanium dioxide, put them into a magnetic stirrer, stir and mix at 68°C for 23 minutes, and obtain the first mixture;

[0040] 2) Maintain the temperature o...