PP composite material suitable for extruded sheet blistering and preparation method and application thereof

Abstract

The invention discloses a PP composite material suitable for plate extrusion and plastic uptake and a preparation method thereof. The PP composite material comprises the following components in parts by weight: 20-70 parts of PP resin, 10-50 parts of reinforced resin, 2-20 parts of a reinforcing agent, 0.05-0.3 part of an initiator, 2-20 parts of a compatilizer, 0.1-1 part of an antioxidant and 0.2-2 parts of a lubricant. The PP composite material has very good oil resistance, corrosion resistance and aging resistance, very high melt strength and relatively wide melting range, can replace the current universal extrusion plate-grade HIPS to be applied to extrusion plates and plastic uptake of refrigerator liners and the like, solves the pain problems of liner cracking and the like puzzling the refrigerator industry, and has a great market application value.

Description

technical field

[0001] The invention relates to the technical field of polymer materials, and more specifically relates to a PP composite material suitable for extruded board blister and its preparation method and application. Background technique

[0002] Most of the current refrigerator liners are made of non-crystalline HIPS for extrusion and plastic molding, but HIPS has poor corrosion resistance to edible oil and foaming agent, and is easy to age, causing the phenomenon of "cracking" in the refrigerator liner. It has happened and has become a pain point that plagues the refrigerator industry. The highly crystalline PP (polypropylene) material has excellent oil resistance and chemical corrosion resistance, but its melt strength is low, the softening point and melting point are very close, and the melting range is narrow. When thermoforming at a temperature higher than the crystalline melting point, the melt The strength will drop sharply, that is, the viscoelastic regio...

Examples

Embodiment 1

[0050] The preparation method of the PP compound material that is suitable for extruded plate blister, comprises the following steps:

[0051] (1) Homopolypropylene 60kg, polystyrene 13kg, DTBP (di-tert-butyl peroxide) 0.1kg, talcum powder 10kg, whiskers 10kg, antioxidant 1680.1kg, antioxidant 10100.3kg, SMA- 5.5kg of maleic anhydride was mixed homogeneously to obtain a mixture, and the mixing speed was 400rpm, and the mixing time was 5 minutes;

[0052] (2) Put the mixture into the twin-screw extruder through the main feed port. The temperature of each section of the twin-screw extruder is 170-180°C, 180-190°C, 190-200°C from the feed port to the machine head. °C, 200-210 °C, 200-210 °C, 210-220 °C, 210-220 °C, 200-210 °C, 200-210 °C, the screw speed is 300 rpm, and the product is obtained through melt extrusion and granulation.

Embodiment 2

[0054] The preparation method of the PP compound material that is suitable for extruded plate blister, comprises the following steps:

[0055] (1) Copolymerized polypropylene 50kg, high impact polystyrene 23kg, DTBP 0.1kg, talc powder 10kg, whiskers 10kg, antioxidant 1680.1kg, antioxidant 10760.3kg, compatibilizer SBS 5.5kg, stearin Calcium acid 1kg mixes evenly, obtains mixture, and mixing speed is 450rpm, and mixing time is 10 minutes;

[0056] (2) Put the mixture into the twin-screw extruder through the main feed port. The temperature of each section of the twin-screw extruder is 170-180°C, 180-190°C, 190-200°C from the feed port to the machine head. °C, 200-210 °C, 200-210 °C, 210-220 °C, 210-220 °C, 200-210 °C, 200-210 °C, the screw speed is 300 rpm, and the product is obtained through melt extrusion and granulation.

Embodiment 3

[0058] The preparation method of the PP compound material that is suitable for extruded plate blister, comprises the following steps:

[0059] (1) 25kg of homopolypropylene, 25kg of copolymerized polypropylene, 10kg of polystyrene, 23kg of high impact polystyrene, 0.1kg of DTBP, 5kg of talcum powder, 5kg of whiskers, 1680.2kg of antioxidant, 10100.1 of antioxidant kg, antioxidant 10760.1kg, compatibilizer SEBS 5.5kg, PE wax 0.5kg, silicone powder 0.5kg and mix evenly to obtain a mixture, the mixing speed is 500rpm, and the mixing time is 15 minutes;

[0060](2) Put the mixture into the twin-screw extruder through the main feed port. The temperature of each section of the twin-screw extruder is 170-180°C, 180-190°C, 190-200°C from the feed port to the machine head. °C, 200-210 °C, 200-210 °C, 210-220 °C, 210-220 °C, 200-210 °C, 200-210 °C, the screw speed is 400 rpm, and the product is obtained through melt extrusion and granulation.

technical field

[0001] The invention relates to the technical field of polymer materials, and more specifically relates to a PP composite material suitable for extruded board blister and its preparation method and application. Background technique

[0002] Most of the current refrigerator liners are made of non-crystalline HIPS for extrusion and plastic molding, but HIPS has poor corrosion resistance to edible oil and foaming agent, and is easy to age, causing the phenomenon of "cracking" in the refrigerator liner. It has happened and has become a pain point that plagues the refrigerator industry. The highly crystalline PP (polypropylene) material has excellent oil resistance and chemical corrosion resistance, but its melt strength is low, the softening point and melting point are very close, and the melting range is narrow. When thermoforming at a temperature higher than the crystalline melting point, the melt The strength will drop sharply, that is, the viscoelastic regio...

Examples

Embodiment 1

[0050] The preparation method of the PP compound material that is suitable for extruded plate blister, comprises the following steps:

[0051] (1) Homopolypropylene 60kg, polystyrene 13kg, DTBP (di-tert-butyl peroxide) 0.1kg, talcum powder 10kg, whiskers 10kg, antioxidant 1680.1kg, antioxidant 10100.3kg, SMA- 5.5kg of maleic anhydride was mixed homogeneously to obtain a mixture, and the mixing speed was 400rpm, and the mixing time was 5 minutes;

[0052] (2) Put the mixture into the twin-screw extruder through the main feed port. The temperature of each section of the twin-screw extruder is 170-180°C, 180-190°C, 190-200°C from the feed port to the machine head. °C, 200-210 °C, 200-210 °C, 210-220 °C, 210-220 °C, 200-210 °C, 200-210 °C, the screw speed is 300 rpm, and the product is obtained through melt extrusion and granulation.

Embodiment 2

[0054] The preparation method of the PP compound material that is suitable for extruded plate blister, comprises the following steps:

[0055] (1) Copolymerized polypropylene 50kg, high impact polystyrene 23kg, DTBP 0.1kg, talc powder 10kg, whiskers 10kg, antioxidant 1680.1kg, antioxidant 10760.3kg, compatibilizer SBS 5.5kg, stearin Calcium acid 1kg mixes evenly, obtains mixture, and mixing speed is 450rpm, and mixing time is 10 minutes;

[0056] (2) Put the mixture into the twin-screw extruder through the main feed port. The temperature of each section of the twin-screw extruder is 170-180°C, 180-190°C, 190-200°C from the feed port to the machine head. °C, 200-210 °C, 200-210 °C, 210-220 °C, 210-220 °C, 200-210 °C, 200-210 °C, the screw speed is 300 rpm, and the product is obtained through melt extrusion and granulation.

Embodiment 3

[0058] The preparation method of the PP compound material that is suitable for extruded plate blister, comprises the following steps:

[0059] (1) 25kg of homopolypropylene, 25kg of copolymerized polypropylene, 10kg of polystyrene, 23kg of high impact polystyrene, 0.1kg of DTBP, 5kg of talcum powder, 5kg of whiskers, 1680.2kg of antioxidant, 10100.1 of antioxidant kg, antioxidant 10760.1kg, compatibilizer SEBS 5.5kg, PE wax 0.5kg, silicone powder 0.5kg and mix evenly to obtain a mixture, the mixing speed is 500rpm, and the mixing time is 15 minutes;

[0060](2) Put the mixture into the twin-screw extruder through the main feed port. The temperature of each section of the twin-screw extruder is 170-180°C, 180-190°C, 190-200°C from the feed port to the machine head. °C, 200-210 °C, 200-210 °C, 210-220 °C, 210-220 °C, 200-210 °C, 200-210 °C, the screw speed is 400 rpm, and the product is obtained through melt extrusion and granulation.

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