Transparent nucleating agent master batch for blow molding PE and preparation method of transparent nucleating agent master batch

Abstract

The invention discloses a transparent nucleating agent master batch for blow molding PE and a preparation method of the transparent nucleating agent master batch. The transparent nucleating agent master batch for blow molding PE is prepared from the following components in parts by weight: 60-80 parts of polyethylene, 12-28 parts of nano butadiene styrene rubber, 3-7 parts of nano silicon dioxide, 0.1-0.5 part of an antioxidant, 0.1-0.3 part of a lubricant and 0.1-0.3 part of a dispersing agent. When the prepared transparent nucleating agent master batch for blow molding is added into blow molding PE, the spherocrystal size of polyethylene resin is reduced, and the structure is finer and more uniform, so that the crystallization temperature of a blow molding PE film is remarkably improved, the transparency is improved, and the haze is reduced. The film has the characteristics of high transparency and low haze, and can be widely applied to the requirements of various film products.

Description

technical field

[0001] The invention belongs to the technical field of polymer composite materials, and in particular relates to a transparent nucleating agent master batch for blow molding PE and a preparation method thereof. Background technique

[0002] As people pay more and more attention to the appearance and the needs of agricultural production, PE materials have been gradually applied to the fields of agricultural films and packaging films. Due to the advantages of high strength, good toughness, high rigidity, heat resistance and cold resistance, high-strength low-density polyethylene has been widely used.

[0003] However, at present, the packaging made of PE material in the market is not high in brightness, smoothness and transparency, and it is impossible for consumers to observe the authenticity and quality of the packaged products, which brings visual inconvenience to both buyers and sellers and limits its further development. Contents of the invention [00...

Examples

Embodiment 1

[0023] Take by weight respectively 60 parts of dry linear low density polyethylene LLDPE-7042, 28 parts of nano-styrene-butadiene rubber, 7 parts of nano-silica, 0.1 part of antioxidant 1010, 0.1 part of antioxidant DSTDP, Lubricant EBS (N,N'-ethylene bis stearamide) 0.2 parts, dispersant E525 0.1 parts, put the above materials into a high-speed mixer and mix evenly to obtain a mixture, and then put the mixture into an extruder for melt extrusion , After water-cooling and pelletizing, the transparent nucleating agent masterbatch for blow molding PE can be obtained. Wherein, the processing temperature of the extruder is 170° C., 180° C., 185° C., 185° C., 190° C., 195° C. from the feeding port to the die opening, the rotating speed is 50 rpm, and the vacuum degree is 0.3 MPa.

Embodiment 2

[0025] Take by weight respectively 80 parts of dry linear low density polyethylene LLDPE-7042, 12 parts of nano-styrene-butadiene rubber, 3 parts of nano-silica, 0.1 part of antioxidant 1010, 0.1 part of antioxidant DSTDP, Antioxidant 168 is 0.2, lubricant EBS (N,N'-ethylene bisstearamide) is 0.2 parts, and light stabilizer V703 is 0.2 parts. Put the above materials into a high-speed mixer and mix them evenly to obtain a mixture, and then add the mixture Melt extrusion in the extruder, water cooling and pelletizing to obtain transparent nucleating agent masterbatch for blow molding PE. Among them, the processing temperature of the extruder is 170°C, 180°C, 185°C, 185°C, 190°C, 195°C from the feeding port to the die port, the speed of the main machine is 80rpm, and the vacuum degree is 0.5MPa.

Embodiment 3

[0027] Take by weight respectively 70 parts of dry linear low density polyethylene LLDPE-7042, 20 parts of nano-styrene-butadiene rubber, 5 parts of nano-silica, 0.1 part of antioxidant 1010, 0.1 part of antioxidant DSTDP, Antioxidant 168 is 0.2, light stabilizer V703 is 0.3 parts, lubricant calcium stearate is 0.2 parts, the above materials are added to a high-speed mixer and mixed uniformly to obtain a mixture, and then the mixture is added to an extruder for melt extrusion, After cooling in water, pelletize to obtain transparent nucleating agent masterbatch for blow molding PE. Among them, the processing temperature of the extruder is 170°C, 180°C, 185°C, 185°C, 190°C, 195°C from the feeding port to the die port, the speed of the main machine is 60 rpm, and the vacuum degree is 0.3 MPa.

technical field

[0001] The invention belongs to the technical field of polymer composite materials, and in particular relates to a transparent nucleating agent master batch for blow molding PE and a preparation method thereof. Background technique

[0002] As people pay more and more attention to the appearance and the needs of agricultural production, PE materials have been gradually applied to the fields of agricultural films and packaging films. Due to the advantages of high strength, good toughness, high rigidity, heat resistance and cold resistance, high-strength low-density polyethylene has been widely used.

[0003] However, at present, the packaging made of PE material in the market is not high in brightness, smoothness and transparency, and it is impossible for consumers to observe the authenticity and quality of the packaged products, which brings visual inconvenience to both buyers and sellers and limits its further development. Contents of the invention [00...

Examples

Embodiment 1

[0023] Take by weight respectively 60 parts of dry linear low density polyethylene LLDPE-7042, 28 parts of nano-styrene-butadiene rubber, 7 parts of nano-silica, 0.1 part of antioxidant 1010, 0.1 part of antioxidant DSTDP, Lubricant EBS (N,N'-ethylene bis stearamide) 0.2 parts, dispersant E525 0.1 parts, put the above materials into a high-speed mixer and mix evenly to obtain a mixture, and then put the mixture into an extruder for melt extrusion , After water-cooling and pelletizing, the transparent nucleating agent masterbatch for blow molding PE can be obtained. Wherein, the processing temperature of the extruder is 170° C., 180° C., 185° C., 185° C., 190° C., 195° C. from the feeding port to the die opening, the rotating speed is 50 rpm, and the vacuum degree is 0.3 MPa.

Embodiment 2

[0025] Take by weight respectively 80 parts of dry linear low density polyethylene LLDPE-7042, 12 parts of nano-styrene-butadiene rubber, 3 parts of nano-silica, 0.1 part of antioxidant 1010, 0.1 part of antioxidant DSTDP, Antioxidant 168 is 0.2, lubricant EBS (N,N'-ethylene bisstearamide) is 0.2 parts, and light stabilizer V703 is 0.2 parts. Put the above materials into a high-speed mixer and mix them evenly to obtain a mixture, and then add the mixture Melt extrusion in the extruder, water cooling and pelletizing to obtain transparent nucleating agent masterbatch for blow molding PE. Among them, the processing temperature of the extruder is 170°C, 180°C, 185°C, 185°C, 190°C, 195°C from the feeding port to the die port, the speed of the main machine is 80rpm, and the vacuum degree is 0.5MPa.

Embodiment 3

[0027] Take by weight respectively 70 parts of dry linear low density polyethylene LLDPE-7042, 20 parts of nano-styrene-butadiene rubber, 5 parts of nano-silica, 0.1 part of antioxidant 1010, 0.1 part of antioxidant DSTDP, Antioxidant 168 is 0.2, light stabilizer V703 is 0.3 parts, lubricant calcium stearate is 0.2 parts, the above materials are added to a high-speed mixer and mixed uniformly to obtain a mixture, and then the mixture is added to an extruder for melt extrusion, After cooling in water, pelletize to obtain transparent nucleating agent masterbatch for blow molding PE. Among them, the processing temperature of the extruder is 170°C, 180°C, 185°C, 185°C, 190°C, 195°C from the feeding port to the die port, the speed of the main machine is 60 rpm, and the vacuum degree is 0.3 MPa.