Glass fiber reinforced polypropylene

Abstract

The invention discloses glass fiber reinforced polypropylene which comprises the following components in percentage by weight: 64.45 percent of polypropylene, 30 percent of glass fibers, 5 percent of a compatilizer, 0.5 percent of a lubricating agent and 0.05 percent of titanium dioxide. The glass fiber reinforced polypropylene disclosed by the invention has the technical effects that because the titanium dioxide is added into the glass fiber reinforced polypropylene, the shear capacity of an extruder screw does not need to be enhanced in the material production process, the interior of the glass fibers can be effectively wetted with resins, the manufactured product is smooth and attractive in surface, and the performance is not influenced.

Description

technical field [0001] The invention belongs to the technical field of organic materials, and in particular relates to a glass fiber reinforced polypropylene. Background technique [0002] As a general-purpose engineering plastic, glass fiber-reinforced polypropylene has excellent properties such as high strength, high stiffness, rigid impact strength, low density, low warpage creep, and dynamic fatigue resistance. It is widely used in automobiles due to its high cost performance , home appliances and other structural parts, replacing metal, short glass fiber reinforced nylon and other materials. At present, glass fiber reinforced polypropylene is generally prepared from polypropylene, glass fiber, compatibilizer and lubricant. However, in the production process of glass fiber reinforced polypropylene, the glass fiber is difficult to cut, so that the length of the glass fiber is too long and the dispersion Uneven, the inside of the bundled glass fiber cannot be effectively ...

AI Technical Summary

Problems solved by technology

At present, glass fiber reinforced polypropylene is generally prepared from polypropylene, glass fiber, compatibilizer and lubricant. However, in the production process of glass fiber reinforced polypropylene, the glass fiber is difficult to cut, so that the length of the glass fiber is too long and the dispersion Uneven, the inside of the bundled glass fiber cannot be effectively wetted with the resin, so there is stress concentration in the bundled glass fiber, which often blocks the mold hole, causing a bunch of glass fibers to be brought out with the material strip at the exit of the mold hole Fuzz and broken strips make the product look rough and not smooth enough

In order to solve this problem, the existing method is usually to enhance the shearing capacity of the extruder screw, but if the shearing capacity is too large, the glass fiber will be sheared too much, which will affect the performance of the finished product

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