Special polypropylene reinforcing material for water pump and preparation method thereof

A polypropylene reinforced, polypropylene technology, applied in the polymer field, can solve the problems of strict requirements on the physical properties of finished products, the water pressure resistance, the strength is difficult to meet the requirements, the strength of the weld line is weak, etc., to improve the burst pressure and pressure point time. , The effect of improving the strength of the weld line and improving the compressive strength

Pending Publication Date: 2020-05-19
合肥圆融新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, due to the particularity of the water pump parts, the parts are complex, there are many circular holes, and there are strict requirements on the physical properties and the water pressure resistance of the finished product.
Directly using conventional polypropylene, the strength is difficult to meet the requirements; using conventional long glass fiber or short fiber reinforced products, due to many circular holes, there are a large number of weld lines during injection molding, which will lead to weak strength at the weld lines in the water pressure test while the first rupture

Method used

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  • Special polypropylene reinforcing material for water pump and preparation method thereof
  • Special polypropylene reinforcing material for water pump and preparation method thereof
  • Special polypropylene reinforcing material for water pump and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The reinforced polypropylene specially used for water pumps in this embodiment is composed of the following raw materials in parts by weight:

[0045]

[0046] Concrete preparation method comprises the following steps:

[0047] (1) After the chopped glass fibers are dried, stir and reflux at a low speed for 10 minutes with an ethanol solution of a silane coupling agent with a mass percent concentration of 10%, leave it at room temperature for 12 hours, vacuum filter, and place in an electric heating constant temperature blast drying oven Dry to constant weight at 80°C to obtain chopped glass fibers after surface treatment for subsequent use;

[0048](2) Add polypropylene, compatibilizer, antioxidant, chain breaking agent and lubricant together in a mixer with nitrogen protection and mix at high speed for 2-10 minutes;

[0049] (3) Under the protection of nitrogen, put the mixture of (2) into the parallel twin-screw extruder to melt, then add the chopped glass fiber ...

Embodiment 2

[0066] The reinforced polypropylene specially used for water pumps in this embodiment is composed of the following raw materials in parts by weight:

[0067]

[0068]

[0069] Concrete preparation method comprises the following steps:

[0070] (1) After the chopped glass fibers are dried, stir and reflux at a low speed for 10 minutes with an ethanol solution of a silane coupling agent with a mass percent concentration of 10%, leave it at room temperature for 12 hours, vacuum filter, and place in an electric heating constant temperature blast drying oven Dry to constant weight at 80°C to obtain chopped glass fibers after surface treatment for subsequent use;

[0071] (2) Add polypropylene, compatibilizer, antioxidant, chain breaking agent and lubricant together in a mixer with nitrogen protection and mix at high speed for 2-10 minutes;

[0072] (3) Under the protection of nitrogen, put the mixture of (2) into the parallel twin-screw extruder to melt, then add the chopped...

Embodiment 3

[0075] The reinforced polypropylene specially used for water pumps in this embodiment is composed of the following raw materials in parts by weight:

[0076]

[0077] Concrete preparation method comprises the following steps:

[0078] (1) After the chopped glass fibers are dried, stir and reflux at a low speed for 10 minutes with an ethanol solution of a silane coupling agent with a mass percent concentration of 10%, leave it at room temperature for 12 hours, vacuum filter, and place in an electric heating constant temperature blast drying oven Dry to constant weight at 80°C to obtain chopped glass fibers after surface treatment for subsequent use;

[0079] (2) Add polypropylene, compatibilizer, antioxidant, chain breaking agent and lubricant together in a mixer with nitrogen protection and mix at high speed for 2-10 minutes;

[0080] (3) Under the protection of nitrogen, put the mixture of (2) into the parallel twin-screw extruder to melt, then add the chopped glass fiber...

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Abstract

The invention provides a special high-strength high-fluidity polypropylene reinforcing material for a water pump and a preparation method thereof. According to the invention, a long glass fiber composite material and chopped glass fibers are compounded to be used as a filling main body; high-melting high-crystallized copolymerized PP is used as a main raw material; 2,5-dimethyl-2,5-bis(tert-butylperoxy)hexane is used as a chain breaking agent; and the material is prepared through twin-screw extrusion. The problems that when a plastic strip steel material is exploded on an industrial water pump, the service life of the water pump is short, damage is likely to happen, and water leakage is prone to occurring due to insufficient weld line strength are solved in the invention. The prepared material has the characteristics of high strength, high fluidity, high weld line strength and the like, the original bursting pressure of the water pump can be improved by 20% under standard experimentalconditions, and the time of the pressure at a bursting point is prolonged by 50%.

Description

technical field [0001] The invention relates to the technical field of polymers, in particular to a special polypropylene reinforcing material for water pumps and a preparation method thereof. Background technique [0002] Plastic products are widely used in industry, agriculture and daily life due to their low cost and strong plasticity. In recent years, my country's plastic products industry has maintained a rapid development trend, and the output and export volume of plastic products rank first in the world. With the development of the economy, it is gradually replacing the position of steel in the water pump industry. In recent years, the water pump industry has also entered the era of lightweight. Most of the models are household and portable. The original shell material is steel, but due to its heavy weight and inconvenient handling, consumers have criticized it. [0003] Polypropylene (PP) has excellent physical properties and processability such as light specific g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L51/06C08K13/06C08K9/06C08K7/14C08J5/06
CPCC08J5/06C08J2323/12C08J2451/06
Inventor 宋钰王雷杨亚娣高波
Owner 合肥圆融新材料有限公司
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