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Polypropylene composite material as well as preparation method and application thereof

A composite material and polypropylene technology, applied in the field of polypropylene composite material and its preparation, can solve the problems of high price of antibacterial agents and need to improve antibacterial effect, and achieve good mechanical properties and antibacterial properties, low cost and low production cost. Effect

Pending Publication Date: 2022-07-01
SHANGHAI KINGFA SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to overcome the problems that the antibacterial agent in the existing antibacterial polypropylene material is expensive and the antibacterial effect needs to be improved, and provide a polypropylene composite material with low cost and remarkable antibacterial effect

Method used

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  • Polypropylene composite material as well as preparation method and application thereof
  • Polypropylene composite material as well as preparation method and application thereof
  • Polypropylene composite material as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] The present embodiment provides a kind of acid polypropylene, which is prepared according to the following method:

[0065] 200g of polypropylene 1# and 400mL of concentrated nitric acid (mass concentration of 70%) were added to the three-necked flask, stirred and mixed evenly, stirred and reacted at 130°C for 16h (a small amount of mixture was taken out regularly), cooled to room temperature, and the filter residue was collected by filtration. After washing with water, it was dried to constant weight at 80°C to obtain the acid polypropylene. At 230°C, under a load of 2.16Kg, the melt flow rate was 14g / 10min, and it was recorded as Acid-PP-1.

Embodiment 2

[0067] The present embodiment provides a kind of acid polypropylene, which is prepared according to the following method:

[0068] 200 g of polypropylene 1# and 500 mL of concentrated nitric acid (mass concentration of 70%) were added to the three-necked flask, stirred and mixed evenly. After stirring and reacting at 130 ° C for 16 h, after cooling to room temperature, the filter residue was collected by filtration. The acid polypropylene is obtained by drying to constant weight under the condition of ℃. At 230℃, under the load of 2.16Kg, the melt flow rate is 15g / 10min, which is recorded as Acid-PP-2.

Embodiment 3

[0070] The present embodiment provides a kind of acid polypropylene, which is prepared according to the following method:

[0071] 200 g of polypropylene 1# and 600 mL of concentrated nitric acid (mass concentration of 70%) were added to the three-necked flask, stirred and mixed evenly. After stirring and reacting at 130 ° C for 16 h, after cooling to room temperature, the filter residue was collected by filtration. The acid polypropylene is obtained by drying to constant weight under the condition of ℃. At 230 ℃, under the load of 2.16Kg, the melt flow rate is 15g / 10min, which is recorded as Acid-PP-3.

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Abstract

The invention provides a polypropylene composite material as well as a preparation method and application thereof. The polypropylene composite material comprises the following components in parts by weight: 50-80 parts of acidic polypropylene, 5-20 parts of a toughening agent, 10-30 parts of glass fibers, 1-5 parts of a compatilizer, 0-1 part of an antioxidant and 0-0.5 part of a preservative. According to the invention, polypropylene is subjected to acidic modification, active groups capable of reacting with bacterial proteins are introduced, and the synergistic effect of acidity and the active groups enables the polypropylene composite material to have a better antibacterial effect; meanwhile, the polypropylene composite material disclosed by the invention is simple in production process and low in cost, and no extra component influencing other properties (such as mechanical properties) of the material is introduced. The polypropylene composite material provided by the invention not only has low production cost, but also has good mechanical properties and antibacterial properties.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a polypropylene composite material and a preparation method and application thereof. Background technique [0002] Polypropylene is a common engineering plastic material, which is widely used in life (such as the automotive field) due to its good mechanical properties and safety properties. [0003] The interior armrests, steering wheel covers, door panels and other parts of the car often come into contact with the human body, and bacteria carried by the human body are easy to breed here. become a problem that people urgently need to solve. [0004] The existing antibacterial material is to add heavy metal ions in polypropylene, and use the strong oxidizing property of heavy metal ions to kill bacteria. For example, Chinese patent CN102838809A adds nano-zinc oxide and nano-silver oxide to polypropylene materials, but this method If the heavy metal ion content is too l...

Claims

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Application Information

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IPC IPC(8): C08L23/36C08L23/32C08L53/00C08L51/06C08K7/14
CPCC08L23/36C08L23/32C08L53/00C08L51/06C08K7/14
Inventor 谭亚辉陈桂吉孙刚陈延安
Owner SHANGHAI KINGFA SCI & TECH