A high-impact high-pressure water pump shell material based on long glass fiber modified polypropylene and its preparation method

Abstract

The invention relates to a high impact resistant high pressure water pump shell material based on long glass fiber modified polypropylene and a preparation method thereof. The shell material is composed of the following raw materials in parts by weight: 55 to 75 parts of polypropylene resin, 20 to 40 parts of organic modified long glass fiber, 5 to 16 parts of impact resistant modified master batch, and 0.5 to 2.0 parts of chain extender. The preparation method comprises the following steps: step one, orderly adding polypropylene resin, impact modified master batch, organic modified long glass fiber, and chain extender into a high speed mixing machine, and mixing; step two, putting the mixed materials into a high speed mixing machine, and mixing; step three, putting the obtained mixture into a dual screw extruder, pulling out the mixture from the head of the extruder, cooling, drying through blowing, and cutting the mixture into particles so as to obtain the shell material. The shell material has excellent mechanical properties, the impact toughness of the shell material is enhanced, and thus the brittle failure will not happen during the long application process of water pump shell.

Description

technical field [0001] The invention relates to the technical field of new materials-macromolecule material-macromolecule material processing and application technology, and mainly relates to a high-impact-resistant high-pressure water pump shell material based on long glass fiber modified polypropylene and a preparation method thereof. Background technique [0002] At present, the commonly used water pump casing materials are usually metal materials, including cast iron, stainless steel, cast steel, alloy steel, etc., but the water pump casings made of metal materials are often heavy and expensive, and are easily corroded after long-term use. Heavy metal pollution of water bodies. [0003] If polymer materials are used as the pump casing material, it can effectively solve the shortcomings of traditional metal pump casings that are bulky, expensive, and prone to heavy metal pollution. However, there are certain problems in the application of polymer materials to prepare hig...

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Problems solved by technology

[0002] At present, the commonly used water pump casing materials are usually metal materials, including cast iron, stainless steel, cast steel, alloy steel, etc., but the water pump casings made of metal materials are often heavy and expensive, and are easily corroded after long-term use. Heavy Metal Pollution of Water

[0003] If the polymer material is used as the pump casing material, it can effectively solve the shortcomings of the traditional metal pump body, which are bulky, expensive and prone to heavy metal pollution.

However, there are certain problems in the application of polymer materials to prepare high-pressure water pump shell materials. On the one hand, the mechanical properties of general-purpose polymer materials (such as polypropylene) cannot meet the requirements of high-pressure water pumps; The environment is not as good as metal materials, so it has no obvious advantages in service life

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