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A kind of ultra-low temperature resistant polypropylene composite material and preparation method thereof

A technology of composite material and polypropylene, which is applied in the field of ultra-low temperature-resistant polypropylene composite materials and its preparation, can solve the problems of poor low-temperature toughness, etc., and achieve the effects of excellent low-temperature impact performance, good toughening effect, and simple operation

Active Publication Date: 2019-03-29
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, one of the biggest disadvantages of polypropylene materials is that the low temperature toughness is poor. Generally, the notched Izod impact strength of pure copolymer polypropylene without toughening modification at -30°C is less than 8kJ / m 2

Method used

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  • A kind of ultra-low temperature resistant polypropylene composite material and preparation method thereof
  • A kind of ultra-low temperature resistant polypropylene composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] (1) Preparation of cross-linked ethylene-α-olefin copolymer

[0070] 100 parts of POE 7447, 0.65 parts of crosslinking initiator DCP, 0.1 part of antioxidant 1010, 0.1 part of antioxidant 168, 0.1 part of lubricant EBS, 0.05 part of lubricant calcium stearate, 0.05 part of lubricant white oil 36 #Put it in a high-speed mixer for high-speed mixing for 2 minutes. The speed of the high-speed mixer is 200 rpm and the temperature is 25°C. The mixed mixture is fed into a twin-screw extruder for melt cross-linking extrusion, stranding, and pelletizing to finally obtain a cross-linked ethylene-alpha olefin copolymer. The temperature of the twin-screw extruder is 30°C, 40°C, 100°C, 105°C, 105°C, 108°C, 108°C, 110°C from the feeding section to the machine head, the length-to-diameter ratio of the twin-screw is 25, and the screw speed is at 100 rpm.

[0071] (2) Preparation of ultra-low temperature resistant polypropylene composites

[0072] First, put 12 parts of the cross-lin...

Embodiment 2

[0088] (1) Preparation of cross-linked ethylene-α-olefin copolymer

[0089]100 parts of POE 8150, 2.75 parts of crosslinking initiator TBPB, 0.35 parts of antioxidant 1010, 0.15 parts of antioxidant 168, 0.25 parts of lubricant EBS, 0.1 part of lubricant calcium stearate, 0.15 parts of lubricant white oil 36 #Put it in a high-speed mixer for high-speed mixing for 5 minutes. The speed of the high-speed mixer is 300 rpm and the temperature is 30°C. The mixed mixture is fed into a twin-screw extruder for melt cross-linking extrusion, stranding, and pelletizing to finally obtain a cross-linked ethylene-alpha olefin copolymer. The temperature of the twin-screw extruder is 30°C, 40°C, 100°C, 105°C, 105°C, 108°C, 108°C, 110°C from the feeding section to the machine head, the length-to-diameter ratio of the twin-screw is 25, and the screw speed is 130 rpm.

[0090] (2) Preparation of ultra-low temperature resistant polypropylene composites

[0091] First, put 22 parts of the cross-...

Embodiment 3

[0093] (1) Preparation of cross-linked ethylene-α-olefin copolymer

[0094] 100 parts of POE 7447, 0.87 parts of crosslinking initiator BPO, 0.18 parts of antioxidant 1010, 0.12 parts of antioxidant 168, 0.16 parts of lubricant EBS, 0.08 parts of lubricant calcium stearate, 0.15 parts of lubricant white oil 36 #Put it in a high-speed mixer for high-speed mixing for 2.8 minutes. The speed of the high-speed mixer is 230 rpm and the temperature is 27°C. The mixed mixture is fed into a twin-screw extruder for melt cross-linking extrusion, stranding, and pelletizing to finally obtain a cross-linked ethylene-alpha olefin copolymer. The temperature of the twin-screw extruder is 30°C, 40°C, 100°C, 105°C, 105°C, 108°C, 108°C, 110°C from the feeding section to the machine head, the length-to-diameter ratio of the twin-screw is 25, and the screw speed is 110 rpm.

[0095] (2) Preparation of ultra-low temperature resistant polypropylene composites

[0096] First, put 17 parts of the cr...

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Abstract

The invention provides an ultra-low temperature resistant polypropylene composite material and a preparation method thereof, which comprises 100 parts of polypropylene, 12-22 parts of cross-linked ethylene-α olefin copolymer, 30-80 parts of ultra-high molecular weight polyethylene, methyl Glycidyl acrylate 0.1~0.3 parts, mineral filler 15~60 parts, compatibilizer 2~8 parts, antioxidant 0.1~0.3 parts, light stabilizer 0.1~0.3 parts, lubricant 0.3~1.0 parts, two steps prepared by method. In the present invention, cross-linked ethylene-alpha olefin copolymer and ultra-high molecular weight polyethylene are compounded and used to toughen polypropylene, so that the polypropylene composite material has good low-temperature toughness and comprehensive mechanical properties, and can be used in long-term ‑30 ℃ environment.

Description

technical field [0001] The invention relates to the field of polymer material modification, in particular to a super low temperature resistant polypropylene composite material and a preparation method thereof. Background technique [0002] Polypropylene (PP) is one of the cheapest general-purpose plastics currently used in the largest amount. It has many excellent characteristics, such as: wide source, low price, low density, non-toxic, easy processing, etc., so it is widely used in automobiles, home appliances, electronic appliances, etc. and other fields. However, one of the biggest disadvantages of polypropylene materials is that the low-temperature toughness is poor. Generally, the notched Izod impact strength of pure copolymer polypropylene without toughening modification at -30°C is less than 8kJ / m 2 . Even the Izod beam notched impact strength of the well-filled and toughened polypropylene composites at -30°C is less than 10kJ / m 2 , and the flexural modulus at room...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/14C08L23/08C08L23/06C08K13/04C08K3/34C08K7/08C08K3/30C08K5/1515C08J3/24B29C48/92
CPCB29C48/92B29C2948/9258B29C2948/92704C08L23/14C08L2205/035C08L2207/068C08L23/06C08L2023/44C08L51/06C08K13/04C08K7/08C08K3/34C08K5/1515C08K2003/3063B29C48/40B29C48/625B29C2948/9259B29C2948/92895
Inventor 杨桂生俞飞
Owner HEFEI GENIUS NEW MATERIALS
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