Reinforced modified polypropylene double-wall twined pipe and preparation method thereof

Abstract

The invention discloses a reinforced modified polypropylene double-wall twined pipe and a preparation method thereof; the reinforced modified polypropylene double-wall twined pipe is formed by spirally twining a reinforced modified polypropylene hollow rectangular pipe and bonding with adhesive tapes; the reinforced modified polypropylene hollow rectangular pipe is prepared from polypropylene, filling masterbatch for reinforcement, polyethylene for toughening, a lubricant, an antioxidant, color masterbatch, absorbent masterbatch, and like reclaimed material; the adhesive tapes are prepared from, by weight, polypropylene, filling masterbatch for reinforcing, polyethylene for toughening, a lubricant, an antioxidant, color masterbatch, absorbent masterbatch, and like reclaimed material. At the premise of ensuring properties of the double-wall tined pipe, the heat resistance and size stability of the double-wall twined pipe can be better improved, deformation can be decreased, and the rigidity and impact strength of the finished pipe can be improved; the reinforced modified polypropylene double-wall twined pipe may also meet the application requirements of the fields, having high emission temperature, such as chemical engineering, wastewater treatment, and the applicable range is widened.

Description

technical field [0001] The invention relates to the technical field of pipes, in particular to a reinforced modified polypropylene (FRPP) double-wall winding pipe and a preparation method thereof. Background technique [0002] The high-density polyethylene double-wall winding pipe is made of high-density polyethylene (HDPE) as the main raw material, and is wound in a hot-melt state by a special extrusion process. Its axial wall section is double-wall I-shaped, and the inner wall is dense and smooth. Hollow, the pipe itself is light in weight and high in strength. Due to its unique forming process, it can produce large-diameter pipes with a diameter up to 3000mm. As a new type of chemical building material, HDPE double-wall winding pipe has the advantages of light weight, corrosion resistance, smooth pipe wall, large flow capacity, good sealing performance, long service life, convenient transportation and installation, and fast construction speed. It is widely used in the c...

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Problems solved by technology

[0006] The polyethylene double-wall winding pipe in the prior art has good toughness and excellent low temperature resistance; however, it generally has disadvantages such as relatively poor rigidity, low heat resistance temperature, large shrinkage rate, poor dimensional stability, and poor light aging resistance. and higher cost

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