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Halogen-free flame-retardant antibacterial anti-aging polypropylene composite material and preparation method thereof

A composite material, polypropylene technology, applied in the field of organic chemical industry, can solve the problems of polymer mechanical and electrical performance decline, loss of use value, easy damage, etc., to achieve the effect of concise formula, simple processing and low price

Inactive Publication Date: 2014-08-20
SHANGHAI NAT ENG RES CENT FORNANOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ultraviolet light can easily destroy the long-chain structure of polymers, trigger the degradation of polymer chains, and eventually lead to the decline of mechanical and electrical properties of polymers, thus making them lose their use value. It is the number one killer of plastics now.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] First, weigh 100 parts by weight of PP raw material, 30 parts by weight of halogen-free flame retardant (ammonium polyphosphate: pentaerythritol = 2:1), and 2 parts by weight of modified nano-zinc oxide, and mix these raw materials evenly. Then preheat the twin-screw extruder to 210°C, add the uniformly mixed raw materials into the twin-screw extruder, control the screw speed at 120r / min, and granulate the product to obtain halogen-free flame-retardant, anti-bacterial, anti-aging polypropylene Masterbatch. The halogen-free flame-retardant, anti-bacterial and anti-aging PP masterbatch can reach a limiting oxygen index of 29.5%, vertical combustion can reach V-0 level, and the antibacterial effect against E. coli can reach 99.99%.

Embodiment 2

[0024] First, weigh 100 parts by weight of PP raw material, 25 parts by weight of halogen-free flame retardant (melamine phosphate: dipentaerythritol = 2:1), and 5 parts by weight of modified nano-zinc oxide, and mix these raw materials evenly. Then preheat the twin-screw extruder to 200°C, put the uniformly mixed raw materials into the twin-screw extruder, control the screw speed at 110r / min, and granulate the product to obtain halogen-free flame-retardant, anti-bacterial, anti-aging polypropylene Masterbatch. The halogen-free flame-retardant, anti-bacterial and anti-aging PP masterbatch has a limiting oxygen index of 28%, a vertical combustion level of V-0, and an antibacterial effect of 99.999% against Escherichia coli.

Embodiment 3

[0026] First, weigh 100 parts by weight of PP raw material, 40 parts by weight of halogen-free flame retardant (melamine pyrophosphate: pentaerythritol = 2:1), 1.5 parts by weight of modified nano-zinc oxide, and mix these raw materials evenly. Then preheat the twin-screw extruder to 220°C, add the uniformly mixed raw materials into the twin-screw extruder, control the screw speed at 130r / min, and granulate the product to obtain halogen-free flame-retardant, anti-bacterial, anti-aging polypropylene Masterbatch. The halogen-free flame-retardant, anti-bacterial and anti-aging PP masterbatch has a limiting oxygen index of 30.5%, a vertical combustion level of V-0, and an antibacterial effect of 99.99% against Escherichia coli.

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PUM

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Abstract

The invention relates to a halogen-free flame-retardant antibacterial anti-aging polypropylene composite material and a preparation method thereof. The preparation method comprises the following steps: weighing a polypropylene raw material, a halogen-free flame retardant and modified nano zinc oxide, and mixing to be uniform; adding a mixture into a double screw extruder, and granulating at a certain temperature and rotary speed of a screw rod to obtain halogen-free flame-retardant antibacterial anti-aging polypropylene master batch. Halogen-free flame-retardant antibacterial anti-aging polypropylene prepared by adopting the method is excellent in flame retardant property, good in antibacterial and anti-aging performance and mechanical property, low in cost, convenient to prepare and suitable for industrialized production.

Description

technical field [0001] The invention belongs to the technical field of organic chemical industry, and in particular relates to a halogen-free flame-retardant, antibacterial, anti-aging polypropylene composite material and a preparation method thereof. Background technique [0002] Polymers are widely used in production and life because of their low production cost, good mechanical properties, non-toxicity, light weight, corrosion resistance, good electrical properties, easy processing, and easy recycling. But it also encounters various problems during its use. [0003] First of all, most polymers are flammable materials. The limiting oxygen index (LOI) of general polymers is only 17-20%, and a lot of toxic and corrosive gases and smoke will be produced when burning. Therefore, the fire caused by them The consequences are even more serious. [0004] Secondly, in the process of processing, storage and use, plastics are extremely susceptible to the combined effects of intern...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08K9/06C08K3/22C08K5/3492C08K3/32
CPCC08K9/06C08K3/22C08K3/32C08K5/053C08K5/06C08K5/34928C08K9/04C08K2003/2296C08K2003/323C08K2201/003C08K2201/011C08L2201/02C08L2201/08C08L2201/22C08L23/12
Inventor 何丹农徐少洪陈超
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH
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