Inorganic nanomaterial toughened HDPE (high-density polyethylene) double-wall corrugated pipe composite masterbatch and preparation method thereof

Abstract

The invention provides an inorganic nanomaterial toughened HDPE (high-density polyethylene) double-wall corrugated pipe composite masterbatch and a preparation method thereof. The masterbatch comprises 100 parts of nano calcium carbonate, 6-12 parts of nano titanium dioxide, 5-8 parts of PP (polypropylene) wax, 12-18 parts of HDPE and 6-10 parts of UHMW-PE6 (ultrahigh molecular weight polyethylene-polyethylene 6). According to the technical scheme, preheating drying is implemented, the nano calcium carbonate and rutile nano titanium dioxide are too large in specific surface areas, and thus powder artesian change can be caused. Maleic anhydride grafted HDPE and UHMW-PE are wrapped by nano powder, and preheating drying is a mode of technical innovation of nano calcium carbonate and rutile nanometer titanium dioxide. A conventional mechanical mode that external heat or friction heat of a stirrer and an internal mixer is conducted through convection or conduction, the time is long, the energy consumption is high,, the yield is low, and serious dust pollution can be caused. Most importantly, material moisture cannot be completely dried out, material heat is not uniform, and a material can be coked inside and unripe inside. By adopting the masterbatch, techniques of toughening and rigidity reduction of organic materials are effectively solved, the cost can be reduced, and materials are all localized.

Description

technical field [0001] The invention belongs to an inorganic toughening composite masterbatch for a high-density polyethylene (HDPE) double-wall corrugated pipe and a production method thereof. Background technique [0002] Compared with PE solid wall pipe, high-density polyethylene HDPE double-wall corrugated pipe can save 25% of raw materials. It has excellent mechanical properties, external compression resistance, and internal pressure of 0.5-0.7MPa. It has light weight, corrosion resistance, Good pressure resistance, long life, easy installation and use, etc. Widely used in municipal and building non-pressure sewage discharge, non-pressure drainage and other fields. [0003] The application of high-density polyethylene (HDPE) pipes has been continuously upgraded, and the technical indicators for the production of double-wall corrugated pipes with a diameter of 300mm-1200mm are very strict. Simply using HDPE pipe material has been unable to achieve the essential perform...

AI Technical Summary

Problems solved by technology

However, after adding flake-shaped talcum powder and needle-shaped wollastonite powder, the stiffness and hardness of the double-wall bellows ring reached the standard, but the toughness did not meet the standard and the brittleness increased.

Adding ethylene-octene copolymer POE will not work if it is less, and the toughness will increase and the ring stiffness will decrease if it is more, which does not meet the requirements.

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