High-performance functionalized alloy modified polypropylene corrugated pipe special-use material and preparation method thereof

Abstract

The invention discloses a high-performance functionalized alloy modified polypropylene corrugated pipe special-use material and a preparation method thereof. The special-use material includes, by weight, 40-70 parts of homo-polypropylene powder, 15-25 parts of block-copolymerized polypropylene powder, 3-15 parts of filler, 2-10 parts of a compatibilizing and toughening agent, 1-5 parts of a flowability modifier, 1-5 parts of a flame retardant, 0.1-1.2 parts of an antioxidant, and 0.05-0.5 parts of an ultraviolet absorber. The corrugated pipe manufactured from the special-use material has goodmechanical performance and low-temperature anti-impact effect, is high in thermal-deformation temperature and heat-conductivity, and has good flame retarding effect, excellent surface glossiness and production stability.

Description

technical field [0001] The invention belongs to a high-performance functional alloy modified polypropylene corrugated pipe special material and a preparation method thereof. Background technique [0002] my country is a big country in the production and consumption of plastic products, especially plastic pipes occupy an extremely important position in the development of the national economy. Plastic pipes are widely used in many industrial applications such as construction engineering, electric power engineering, municipal engineering, communication engineering and petrochemical engineering, and are closely related to people's lives. The development field of this industry is not limited to the manufacture of plastic pipes, but also derives from many related fields such as plastic material modification research, formula system design and engineering installation, forming a plastic pipe manufacturing based on new material research and material modification. The development tr...

AI Technical Summary

Problems solved by technology

At present, corrugated pipes for electric power are generally HDPE pipes and MPP single-wall corrugated pipes, which are respectively made of HDPE (high-density polyethylene) and reinforced modified polypropylene materials. These two materials can only be used for round pipes, not for square pipes. Requirements for the use of modified polypropylene pipes for electric power

HDPE pipes have the following disadvantages: 1. Low Vicat temperature, poor heat resistance, less than 80 ℃; 2. Low tensile strength, less than 18 MPa; 3. Low flexural modulus, less than 800 MPa; 4. Poor flame retardancy, easy 5. Poor processability, high viscosity of HDPE material, resulting in slow production speed and poor gloss of pipe appearance

[0003] The MPP single-wall corrugated pipe is made of reinforced modified polypropylene raw materials. The main mechanism is to increase the strength of the pipe by adding a large amount of inorganic reinforcing materials (the circular pipe is limited by the structure, and the compressive capacity in the vertical direction is higher than that of the pipe). It is much lower than the square pipe, so it is necessary to make up the structural defects through materials), but in this way, the toughness index and other indexes of the material are greatly damaged, so there are the following disadvantages: 1. The low temperature performance is poor, because it is necessary to make up for the structural defects. Defects in compressive strength, a large amount of inorganic reinforcing materials are added to the material, which seriously damages the toughness of the material, and the impact performance is greatly reduced; 2. The tensile strength is low, generally about 22 MPa; 3. The surface of the product is smooth 4. Poor flame retardancy, because in order to increase the modulus of the material, a large amount of inorganic powder material is added to the formula, and the inorganic powder material has a combustion-supporting effect on the product, so it cannot be flame-retardant; 5. The thermal conductivity is low, ranging from 0.28 to 0.32, resulting in slow cooling and forming speed, low production speed and high processing cost

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