Laminated tubular product for high-rise water drainage and manufacturing method thereof

Abstract

The invention belongs to the technical field of plastic tubular products, and in particular, relates to a laminated tubular product for high-rise water drainage and a manufacturing method thereof. The laminated tubular product is composed of the following components: polyvinyl chloride resin, a stabilizer, stearic acid, modified ACR, titanium dioxide, modified nano calcium carbonate and the like; preparation of the modified ACR comprises the following steps: (1) seed emulsion preparation: with butyl acrylate and styrene as monomers, adding a lauryl sodium sulfate emulsifier and a potassium persulfate initiator, stirring and heating to prepare a seed emulsion; (2) inner core preparation: continuing to add the potassium persulfate initiator and the butyl acrylate and styrene monomers, and introducing tetrafluoroethylene gas, to prepare an inner core; and (3) outer shell preparation: continuing to add the lauryl sodium sulfate emulsifier and the potassium persulfate initiator, adding methyl methacrylate, and adding modified nano SiO2, to prepare an outer shell; and (4) carrying out spray drying, to prepare the modified ACR. The vinyl chloride tube has the advantages of good impact resistance and good pressure resistance.

Description

technical field [0001] The invention belongs to the technical field of plastic pipes, and in particular relates to a laminated pipe for high-rise drainage and a preparation method thereof. Background technique [0002] In the water supply system, plastic pipes have the characteristics of non-corrosion, good hygienic performance, and easy installation. They have been vigorously promoted in our country, and it is the general trend to replace traditional galvanized iron pipes. Plastic water supply pipes mainly include: PVC, polyethylene (PE), polypropylene (PP), etc. Compared with other polyolefin pipes, PVC pipes have high strength, good flame retardancy, high ring stiffness, and excellent weather resistance Performance, low price and other advantages, have been widely used. [0003] However, due to the disadvantages of PVC resin itself, such as poor thermal stability, poor low temperature resistance, poor fluidity and insufficient toughness, various additives are added to im...

AI Technical Summary

Problems solved by technology

[0003] However, due to the disadvantages of PVC resin itself, such as poor thermal stability, poor low temperature resistance, poor fluidity and insufficient toughness, it is necessary to add various additives to improve its performance.

Therefore, domestic and foreign countries have successively developed high-impact PVC pipes, mainly using elastomers for toughening, and the most widely used is chlorinated polyethylene (CPE). This method can improve the toughness of PVC pipes, but the amount of CPE added Larger, due to the network toughening mechanism of CPE, the processing conditions are relatively harsh, and it is difficult to achieve a rigid-tough balance

Although this kind of pipe has been promoted to a certain extent, its impact resistance at low temperature (-10°C) is still poor. At the same time, the existing pipe has high density, short pressure resistance time, and high production cost.

Images