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High-antibacterial low-emission automotive modified polypropylene composite material and preparation method thereof

A composite material, polypropylene technology, applied in the field of polypropylene, to achieve the effects of large specific surface area, excellent mechanical properties, and high cost

Inactive Publication Date: 2019-05-07
SHANGHAI PRET COMPOSITES +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the high-efficiency antibacterial properties of titanium dioxide are stimulated by ultraviolet light, which will cause certain limitations in its use.

Method used

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  • High-antibacterial low-emission automotive modified polypropylene composite material and preparation method thereof
  • High-antibacterial low-emission automotive modified polypropylene composite material and preparation method thereof
  • High-antibacterial low-emission automotive modified polypropylene composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Preparation of antibacterial functional masterbatch:

[0040] In parts by weight, flow velocity is 76 parts of polypropylene of 50g / min; 20 parts of nano zinc dioxide; 1 part of compatibilizer methyl glycidyl ether grafted PP (GMA-PP), 2 parts of calcium stearate , together into a high-speed mixer and mixed evenly, then added to a twin-screw extruder, melted, extruded, cooled, and pelletized to prepare antibacterial functional masterbatches.

[0041] The processing temperatures in zones I to X of the twin-screw extruder are 108°C, 190°C, 200°C, 200°C, 215°C, 220°C, 220°C, 225°C, 230°C, and 230°C in sequence. The rotational speed of the main screw is 550r / min, and the temperature of the water tank is 37°C.

[0042](2) High antibacterial, low emission polypropylene composite material and its preparation: in parts by weight, 1 part of antibacterial functional masterbatch prepared in step (1) and 80 parts of polypropylene with a flow rate of 60g / min, porous silicon Ca...

Embodiment 2

[0045] (1) Preparation of antibacterial functional masterbatch:

[0046] In parts by weight, the flow velocity is 65 parts of polypropylene of 50g / min; 30 parts of nano zinc dioxide; 2 parts of compatibilizer methyl glycidyl ether graft PP (GMA-PP), zinc stearate and hard 3 parts of the calcium fatty acid mixture are added together into a high-speed mixer and mixed evenly, then added into a twin-screw extruder, melted, extruded, cooled, and pelletized to prepare antibacterial functional masterbatches through the twin-screw extruder.

[0047] The processing temperatures in zones I to X of the twin-screw extruder are 108°C, 190°C, 200°C, 200°C, 215°C, 220°C, 220°C, 225°C, 230°C, and 230°C in sequence. The rotational speed of the main screw is 550r / min, and the temperature of the water tank is 37°C.

[0048] (2) High antibacterial, low emission polypropylene composite material and its preparation: in parts by weight, 2 parts of the antibacterial functional masterbatch prepared i...

Embodiment 3

[0051] (1) Preparation of antibacterial functional masterbatch:

[0052] In parts by weight, the flow velocity is 68 parts of polypropylene of 60g / min; 30 parts of nanometer zinc dioxide; 1 part of compatibilizer methyl glycidyl ether grafted PP (GMA-PP), 1 part of calcium stearate , together into a high-speed mixer and mixed evenly, then added to a twin-screw extruder, melted, extruded, cooled, and pelletized to prepare antibacterial functional masterbatches.

[0053] The processing temperatures in zones I to X of the twin-screw extruder are 108°C, 190°C, 200°C, 200°C, 215°C, 220°C, 220°C, 225°C, 230°C, and 230°C in sequence. The rotational speed of the main screw is 550r / min, and the temperature of the water tank is 37°C.

[0054] (2) High antibacterial, low emission polypropylene composite material and its preparation: by weight, 2 parts of the antibacterial functional masterbatch prepared in step (1) and 75 parts of polypropylene with a flow rate of 60g / min, porous silico...

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Abstract

The invention discloses a high-antibacterial low-emission automotive modified polypropylene composite material and a preparation method thereof. The modified polypropylene is mainly composed of the following components: 1-5 parts of nano zinc dioxide antibacterial functional masterbatch, 60-90 parts of conventional polypropylene, 5-40 parts of porous calcium silicate, 8-20 parts of an elastomer, 0.1-1.5 parts of an antioxidant, and 0-3 parts of other auxiliary agents. According to the composite material and method provided by the invention, the porous calcium silicate particles, the nano zincoxide with high-efficiency antibacterial properties and the conventional polypropylene are subjected to blend extrusion through a twin-screw extruder or an injection molding machine, the extruded strip mixture is cooled by circulating water, the cooled material enters a pelletizer, pelletizing is performed, and therefore the modified polypropylene particles are obtained, wherein the nano zinc oxide gives high-efficiency long-lasting antibacterial ability to the modified polypropylene because the nano zinc oxide easily generates active oxygen; and at the same time, the porous calcium silicate gives excellent comprehensive mechanical properties to the modified polypropylene because the porous calcium silicate has a uniform particle size and chemical stability, especially, the porous characteristic of the porous calcium silicate effectively ''captures'' small-molecular substances and unpleasant odor produced by degradation of the polypropylene during the adsorption extrusion process, andthe porous calcium silicate gives the low-odor low-emission characteristics to the modified polypropylene.

Description

technical field [0001] The invention relates to a functional polypropylene material and a preparation method thereof, in particular to an antibacterial and low emission modified polypropylene composite material and a preparation method thereof, belonging to the technical field of polypropylene. Background technique [0002] With the rapid development of new energy vehicles, higher requirements are put forward for the lightweight, safety, comfort and environmental protection of vehicles. As a common material for auto parts, modified polypropylene has the outstanding advantages of wide source, low density, good mechanical balance, chemical corrosion resistance, easy processing and low price. [0003] However, polypropylene materials for automotive interiors will inevitably produce a large number of volatile small organic molecules during the synthesis, modification, injection molding and other processes, and the environment inside the car is relatively closed, which will lead ...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/08C08L23/16C08L51/06C08K9/04C08K9/06C08K7/26C08K3/22C08J3/22
Inventor 冯晓峰张锴蔡青周文
Owner SHANGHAI PRET COMPOSITES
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