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High-rigidity high-impact polypropylene resin composition and preparation method thereof

A high-impact polypropylene and polypropylene resin technology, applied in the field of polypropylene materials, can solve the problems of not meeting the requirements of buried polypropylene pipes for ring stiffness and low rigidity of polypropylene resins.

Pending Publication Date: 2020-09-29
SINOPEC YANGZI PETROCHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the rigidity of the polypropylene resin obtained by this invention is not high, and it cannot meet the ring rigidity requirements of buried polypropylene pipes.

Method used

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  • High-rigidity high-impact polypropylene resin composition and preparation method thereof
  • High-rigidity high-impact polypropylene resin composition and preparation method thereof
  • High-rigidity high-impact polypropylene resin composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A high-rigidity high-impact polypropylene resin composition, according to parts by weight, its formula is:

[0029]

[0030]

[0031] Preparation method: Mix the above-mentioned polypropylene resin, antioxidant, halogen absorbent, polymer processing aid, α-nucleating agent, and β-nucleating agent in a high-speed mixer for 5 minutes, and then add the uniformly mixed materials to the double It is produced by melting, plasticizing, extruding and granulating in a screw extruder. Wherein, the aspect ratio of the screw of the twin-screw extruder is 30, and the diameter of the screw of the twin-screw extruder is 25mm. The processing temperature range of the twin-screw extruder is 200-230°C. The properties of the obtained polypropylene resin are shown in Table 2.

Embodiment 2

[0033] A high-rigidity high-impact polypropylene resin composition, according to parts by weight, its formula is:

[0034]

[0035] Preparation method: mix polypropylene resin, antioxidant, halogen absorbent, polymer processing aid, α-nucleating agent, and β-nucleating agent in a high-speed mixer for 4 minutes, and then add the uniformly mixed materials to It is produced by melting, plasticizing, extruding and granulating in a twin-screw extruder. Wherein, the aspect ratio of the screw of the twin-screw extruder is 30, and the diameter of the screw of the twin-screw extruder is 72 mm. The processing temperature range of the twin-screw extruder is 200-230°C. The properties of the obtained polypropylene resin are shown in Table 2.

Embodiment 3

[0037] A high-rigidity high-impact polypropylene resin composition, according to parts by weight, its formula is:

[0038]

[0039] Preparation method: Mix the above-mentioned polypropylene resin, antioxidant, halogen absorbent, polymer processing aid, α-nucleating agent, and β-nucleating agent in a high-speed mixer for 5 minutes, and then add the uniformly mixed materials to the double It is produced by melting, plasticizing, extruding and granulating in a screw extruder. Wherein, the aspect ratio of the screw of the twin-screw extruder is 30, and the diameter of the screw of the twin-screw extruder is 35mm. The processing temperature range of the twin-screw extruder is 190-220°C. The properties of the obtained polypropylene resin are shown in Table 2.

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Abstract

The invention discloses a high-rigidity high-impact polypropylene resin composition and a preparation method thereof. The composition comprises the following substances in parts by weight: 100 parts of polypropylene resin for pipes, 0.1-0.4 part of an antioxidant, 0.05-0.2 part of a halogen absorbent and 0.01-0.1 part of polytetrafluoroethylene. 0.05 to 0.2 part of an alpha nucleating agent; and 0.05 to 0.2 part of a beta nucleating agent. The prepared polypropylene resin has excellent rigidity and impact resistance, is very suitable for the field of plastic buried drainage pipeline systems, and can well meet the use requirements of polypropylene structure wall pipeline systems for buried drainage.

Description

technical field [0001] The invention relates to a polypropylene material, in particular to a high-rigidity and high-impact-resistance polypropylene resin composition and a preparation method. Background technique [0002] The scope of application of plastic pipes continues to expand, and the most market potential is buried drainage pipes. With the country's emphasis on sewage treatment and the promulgation of a series of environmental protection policies, it is expected that my country will enter the climax of construction of drainage pipe network in the next few years, plastic buried drainage pipes will be developed rapidly, and the demand will grow day by day. [0003] Plastic buried drainage pipes are divided into two categories: solid wall pipes and structural wall pipes. According to different materials, structural wall pipes can be divided into high-density polyethylene (HDPE), polypropylene (PP) and rigid polyvinyl chloride (PVC). and other structural wall pipes. Si...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L27/18C08K5/49C08K5/20
CPCC08L23/12C08L2205/24C08L2205/242C08L2203/18C08L27/18C08K5/49C08K5/20
Inventor 鲍光复徐振明姜志荣杨文亮
Owner SINOPEC YANGZI PETROCHEM
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