Reinforced polypropylene material and preparation method thereof

Abstract

The invention discloses a reinforced polypropylene material and a preparation method thereof. Absolute ethyl alcohol, chloroform and water with the volume ratio being 6:3:1 are mixed into a solvent; 0.1 to 3g of long-chain alkylsilane and 0.1 to 2g of alpha nucleating agents are sequentially dissolved into the solvent; 10 to 50 weight parts of glass fiber is soaked into treatment solution; stirring is performed at 80 DEG C for 2h; then, reduced pressure distillation is performed to remove the solvents; drying is performed at 120 DEG C; 100 weight parts of polypropylene, 0.01 to 0.1 weight partof lubricating agents and 0.5 to 1 weight part of antioxidants are uniformly mixed; then, the mixture is added into a double-screw extruding machine for melting; the treated glass fiber is added intothe double-screw extruding machine from the side feeding opening; fusion co-blending, traction, extrusion, cooling and palletization are performed to obtain a finished product. The reinforced polypropylene material and the preparation method have the advantages that alpha nucleating agents are used for modifying the polypropylene; the compatibility improvement and the reinforcement are realized through the glass fiber; the intensity, rigidity and thermal deformation temperature of the material are improved; treatment agent consumption is low; the material cost is low.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a rigid reinforced polypropylene material and a preparation method thereof. Background technique [0002] Polypropylene pipe has the advantages of light weight, non-toxic, heat resistance, corrosion resistance, long service life, convenient installation, reliable connection, recyclable utilization, etc. As a new type of green building energy-saving material, it is widely used in building water supply systems and heating systems , gas transmission system, chemical fluid transmission system, water treatment system, agricultural irrigation system, etc. With the rapid development of my country's economy, the consumption of polypropylene pipes has also increased significantly, and the market share has increased rapidly. It is the first choice of the three major new plastic pipes promoted by the Ministry of Construction of my country, and its development momentum has been rap...

AI Technical Summary

Problems solved by technology

[0003] However, at higher temperatures, the strength and rigidity of polypropylene pipes are low, and the deformation is serious. Compared with metal pipes, the linear expansion coefficient is large, and the phenomenon of thermal expansion and contraction is significant. If it is not handled properly, it will cause a lot of trouble.

For example: when the pipes are surface-mounted, they sag due to serious deformation, which affects the appearance; when the pipes are buried in the ground, the deformation rate can be as high as 8% after one year of auxiliary installation; in addition, there may be wire buckle connections due to excessive thermal expansion and contraction deformation Problems such as leakage at the place and opening the wall surface limit the application range of polypropylene pipes

[0004] In CN200910032301, CN200910182681, CN201210462214, CN201510329282, CN201310465800 and other Chinese invention patent documents disclosed in the technical scheme of using glass fiber reinforced modified polypropylene material, in addition to polypropylene and glass fiber, the main components used need to add more Compatibilizer (1-15 parts), to improve the compatibility between polypropylene and glass fiber, has the defect of high cost; in addition, glass fiber is not easy to disperse uniformly in polypropylene matrix, and the modification effect is poor

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