Nanometer polypropylene modifier and its prepn process

Abstract

The present invention relates to one kind of nanometer polypropylene modifier and its preparation process. The nanometer polypropylene modifier is prepared with nanometer completely vulcanized rubber powder in 40-50 %, antioxidant 168 in 10-15 %, antioxidant 1010 in 10-15 %, dispersant in 3-5 %, antistatic agent in 3-5 %, couplant in 3-5 % and calcium stearate in 3-5 %. The preparation process includes the following steps: 1. dispersing and mixing the components in a stirrer; 2. further dispersing in a ball mill; and 3. extruding to pelletize in an extruder while further dispersing. The nanometer polypropylene modifier as one multifunctional product has functions of strengthening, toughening, resisting heat, etc.

Description

technical field [0001] The invention relates to a nanometer polypropylene modifier. Background technique [0002] my country's plastic production and processing volume ranks second in the world, and its annual demand accounts for 10 percent of the world's total consumption. The actual situation in China is: there are many general-purpose plastics produced, resulting in a surplus of products, while the production of engineering plastics is small, and a large number of imports are required to fill the gap every year. Taking polypropylene as an example, the import in 2000 was 1.62 million tons, and the import in 2004 reached 2.85 million tons. [0003] Strengthening the modification of plastics and increasing the production capacity of engineering plastics is one of the major projects in the petrochemical industry during the 11th Five-Year Plan. The K9015 brand polypropylene produced by domestic petrochemical enterprises is mainly used in the manufacture of automobile bumpers...

AI Technical Summary

Problems solved by technology

At present, the biggest technical problem in the modification of plastics is that if the rigidity is increased, the toughness will decrease, and if the toughness is increased, the rigidity will be insufficient. In addition, the main technical indicators such as heat resistance and stretchability are also difficult to improve.

It is difficult to solve the above problems at the same time by adding a modifier

[0006] 2. Single function

To change the properties of polypropylene in many ways, it is necessary to add a variety of modifiers of different brands at the same time, which not only increases the production cost, but also reduces the labor efficiency

[0007] 3. More powder

At present, some brand products are still in powder form, and there are many disadvantages in the production process: for example, the container is easy to hang on the wall when storing materials, easy to raise dust when feeding materials, easy to block when feeding materials, and large material loss, which not only causes pollution, but also affects the health of workers. , also makes the measurement inaccurate, directly affects the product quality and increases the production cost