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Cold-resisting PP (Polypropylene) corrugated pipe and preparation method thereof

A corrugated pipe and cold-resistant technology, which is applied in the field of cold-resistant PP corrugated pipe and its preparation, can solve the problems of poor cold resistance, poor impact resistance, and inappropriate use of PP pipes, and achieve good cold resistance and small shear sensitivity resistance, the effect of improving cold resistance

Inactive Publication Date: 2019-01-25
磐安县高科塑料制品厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the fly in the ointment is that the existing PP pipes have poor cold resistance, poor impact resistance at low temperature or even room temperature, easy to be brittle, and easy to age. Suitable, especially for areas with long cold seasons such as the north where use is limited

Method used

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  • Cold-resisting PP (Polypropylene) corrugated pipe and preparation method thereof
  • Cold-resisting PP (Polypropylene) corrugated pipe and preparation method thereof
  • Cold-resisting PP (Polypropylene) corrugated pipe and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] In terms of weight, weigh each raw material according to the following ratio, put the above raw materials into the mixer, mix at a temperature of 110 ° C, and automatically cool after reaching the requirements. After being extruded under high temperature and high pressure, the cold-resistant PP corrugated pipe can be obtained through a molding machine; the temperature of the barrel of the extruder is 150°C, and the temperature of the die is not higher than 210°C.

[0019]

Embodiment 2

[0021] In terms of weight, weigh each raw material according to the following ratio, put the above raw materials into the mixer, and mix them at a temperature of 120 ° C. After reaching the requirements, they will be automatically cooled. After being sieved by a vibrating screen, they will be automatically loaded. Extruded by high temperature and high pressure, and formed by a molding machine, the cold-resistant PP corrugated pipe is obtained; the barrel temperature of the extruder is 160°C, and the die temperature is not higher than 210°C.

[0022]

Embodiment 3

[0024] In terms of weight, weigh each raw material according to the following ratio, put the above raw materials into the mixer, mix at a temperature of 130 ° C, and automatically cool after reaching the requirements. Extruded by high temperature and high pressure, and formed by a molding machine, the cold-resistant PP corrugated pipe can be obtained; the temperature of the barrel of the extruder is 170°C, and the temperature of the die is not higher than 210°C.

[0025]

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Abstract

The invention discloses a cold-resisting PP (Polypropylene) corrugated pipe. The cold-resisting PP corrugated pipe is prepared from the following raw materials: 70 to 90 parts of PP-B (Polypropylene-Block copolymer), 8 to 12 parts of POE (Polyolefin Elastomer), 4 to 5 parts of LLDPE (Linear Low Density Polyethylene), 2 to 8 parts of PE (Polyethylene), 2 to 8 parts of HDPE (High-density Polyethylene), 0.8 to 1.2 parts of EVA (Ethylene Vinyl Acetate) and 1 to 5 parts of modified color mater batch. A preparation method of the cold-resisting PP corrugated pipe specifically comprises the followingsteps: adding the raw materials into a mixing machine according to the weight percent and mixing at the temperature of 110 to 140 DEG C; automatically cooling after reaching the requirements; after sieving through a vibration sieve, automatically feeding; extruding through a double-screw extruder under high temperature and high pressure; molding through a molding machine and carrying out fixed-length cutting through a cutting machine; conveying into a flaring machine and carrying out flaring; checking and storing, wherein the temperature of a barrel body of the extruder is 150 to 185 DEG C andthe temperature of an opening die is not greater than 210 DEG C. The PP corrugated pipe prepared by the invention has the characteristics of excellent cold resistance and good toughness, and is especially suitable for a winter low-temperature condition of a cold region.

Description

technical field [0001] The invention relates to the technical field of polymer materials, more specifically, it relates to a cold-resistant PP corrugated pipe and a preparation method thereof. Background technique [0002] Plastic corrugated pipes were first developed in the 1950s, and have developed by leaps and bounds in the last 20 years. The plastic corrugated pipe adopts a special "annular groove" special-shaped section in the structural design. This kind of pipe is novel in design and reasonable in structure, breaking through the traditional "plate" structure of ordinary pipes, so that the pipe has sufficient compression resistance and impact resistance. Strength, but also has good flexibility. Plastic bellows can be widely used in drainage and ventilation pipes; interior decoration wire casings; automotive wire casings; prestressed anchor cable casings; air conditioner drains, etc. [0003] As one of the plastic corrugated pipes, PP (polypropylene) pipe has a higher...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/08C08L23/06C08K9/12C08K3/22
CPCC08K2003/2241C08L23/12C08L2203/18C08L2205/025C08L2205/035C08L2205/242C08L2207/062C08L23/0815C08L23/06C08L23/0853C08K9/12C08K3/22
Inventor 陈庆云
Owner 磐安县高科塑料制品厂
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