Technique for producing large diameter glass fiber reinforcement polypropylene reinforced pipe and material used for the same

Abstract

The invention discloses a material for producing a FRPP ribbed tube with large diameter and a production technology using the material to produce the FRPP ribbed tube with large diameter. The materials for producing the FRPP ribbed tube with large diameter include the following components and parts by weight: 100 parts by weight of polypropylene resin, 10-12 parts by weight of glass fiber, 15-18 parts by weight of heavy calcium carbonate, 8-9 parts by weight of toughening agent, 2-2.5 parts by weight of compatibilizer, and 0.2-0.5 parts by weight of PE wax. The production technology using thematerial to produce the FRPP ribbed tube with large diameter includes that firstly the raw materials are proportioned according to the definite weight ratio; then the formulations are mixed in a high-speed mixer in high speed; after that the mixed materials are introduced into an extruder for extrusion granulation; the resulting granular materials are further processed by 92 double screw extruder; and finally the resulting products are extruded and formed by a ribbed tube forming machine followed by cooling and fixed length cutting.

Description

technical field The invention relates to a material for producing large-diameter glass fiber reinforced polypropylene (FRPP) reinforced pipes and a production process for producing large-diameter FRPP reinforced pipes. Background technique FRPP not only has excellent mechanical properties of glass fiber, but also has good chemical resistance of polypropylene. It is a chemical material with excellent thermal and mechanical properties, chemical resistance and good processing performance. Domestic enterprises generally use this chemical material for processing For all kinds of drainage and sewage pipes, if this chemical material is not modified during processing and use, it will be directly formed by molding. One processing can only produce pipes with a length of 1 meter (the processing method is similar to that of the original cement pipe), and then Then connect the pipes to 2 meters each by manual welding. In the specific construction and installation, the general pipeline i...

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Problems solved by technology

In the specific construction and installation, the general pipeline is 6 meters, and then the above-mentioned 2-meter pipelines are installed and connected together, which leads to low installation efficiency, high labor intensity, high cost, and welding points between the pipelines. Too much, it is easy to break or seep water after a long time of use

At present, the raw materials used to produce large-diameter plastic pipes on the market are generally high-density polyethylene (HDPE). The disadvantages of large-diameter pipes produced using this material are small elastic modulus coefficients, poor compressive strength, and high temperature resistance. Poor, especially in the summer construction in the south, the pipe is easy to become soft, the ring rigidity is low, and the pipe is easy to deform during construction, which seriously affects the construction quality

At present, due to the limitations of processing technology and material properties, domestic manufacturers cannot produce large-caliber (diameter above 800mm) FRPP reinforced pipes.

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