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Stress whitening-resistant antibacterial polypropylene composition and preparation method thereof

A polypropylene composition and a stress-resistant technology are applied in the field of stress-whitening-resistant antibacterial polypropylene compositions and their preparation, and can solve the problems of poor stress-whitening resistance, poor mechanical properties of polymers, and the like

Active Publication Date: 2020-10-27
CHENGDU KINGFA SCI & TECH ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the addition of antimicrobial agents to polymers often leads to poor mechanical properties and poor stress whitening resistance.

Method used

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  • Stress whitening-resistant antibacterial polypropylene composition and preparation method thereof
  • Stress whitening-resistant antibacterial polypropylene composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1、 comparative example 7 and comparative example 8

[0080] The polypropylene composition is prepared as follows:

[0081] 1) Preparation of composite antibacterial agent:

[0082] Add 5 parts by weight of nano-titanium dioxide, 2 parts by weight of nano-silver and 0.05 parts by weight of emulsifier into 20 parts by weight of distilled water, stir and emulsify, heat to 85-90 ° C, and add 30 parts by weight of 5 wt% cerium chloride aqueous solution dropwise , the dropping rate is 6 parts by weight / 10min, after the dropwise addition, 2 parts by weight of polypropylene glycol diglycidyl ether is added, then ultrasonicated at 70-80°C for 30min, centrifuged after 2h and washed 4 times with distilled water, after dehydration at 50 Drying at ℃ for 5 hours to obtain a composite antibacterial agent;

[0083] 2) Preparation of compatibilizer

[0084] 100 parts by weight of polypropylene A, 1 part by weight of maleic anhydride, 0.6 parts by weight of nano-titanium dioxide and 0.6 parts by weight of silane coupling agent are mixed uniform...

Embodiment 2

[0089] The polypropylene composition is prepared as follows:

[0090] 1) Preparation of composite antibacterial agent:

[0091] Add 4.8 parts by weight of nano-titanium dioxide, 1.5 parts by weight of nano-silver and 0.05 parts by weight of emulsifier into 20 parts by weight of distilled water, stir and emulsify, heat to 85-90 ° C, add 35 parts by weight of 4 wt% cerium chloride aqueous solution dropwise, The dropping rate is 7 parts by weight / 10min. After the addition is completed, 1.7 parts by weight of polypropylene glycol diglycidyl ether is added, then ultrasonicated at 70-80°C, centrifuged after 1h and washed with distilled water for 4 times, and dehydrated at a temperature of 60°C Under drying for 6 hours, a composite antibacterial agent is obtained;

[0092] 2) Preparation of compatibilizer

[0093] 100 parts by weight of polypropylene A, 1.1 parts by weight of maleic anhydride, 0.5 parts by weight of nano-titanium dioxide and 0.8 parts by weight of silane coupling a...

Embodiment 3

[0098] The polypropylene composition is prepared as follows:

[0099] 1) Preparation of composite antibacterial agent:

[0100] Add 5.3 parts by weight of nano-titanium dioxide, 2.3 parts by weight of nano-silver and 0.1 part by weight of emulsifier into 25 parts by weight of distilled water, stir and emulsify, heat to 85-90 ° C, add dropwise 30 parts by weight of 5 wt% cerium chloride aqueous solution, The dropping rate is 5 parts by weight / 10min. After the addition is completed, add 2.1 parts by weight of polypropylene glycol diglycidyl ether, then sonicate at 70-80°C, centrifuge after 2 hours and wash with distilled water for 3 times, and dehydrate at 50°C Under drying for 5 hours, the compound antibacterial agent was obtained;

[0101] 2) Preparation of compatibilizer

[0102] 100 parts by weight of polypropylene A, 0.8 parts by weight of maleic anhydride, 0.8 parts by weight of nano-titanium dioxide and 0.5 parts by weight of silane coupling agent are mixed uniformly, t...

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Abstract

The invention discloses a stress whitening-resistant antibacterial polypropylene composition and a preparation method thereof. The polymer composition disclosed by the invention is obtained by extruding polypropylene, a compatilizer, modified wollastonite, a flexibilizer, a composite antibacterial agent and an antioxidant through a double-screw extruder; the composite antibacterial agent preparedby selecting specific raw materials is matched with the modified wollastonite and the compatilizer to modify the polymer, so that the prepared polypropylene composition has good antibacterial property, stress whitening resistance and mechanical property, and can be widely applied to automotive interiors.

Description

technical field [0001] The invention belongs to the field of high molecular polymers, in particular to a stress-whitening-resistant and antibacterial polypropylene composition and a preparation method thereof. Background technique [0002] Polypropylene is a polymer produced by the addition polymerization of propylene. Polypropylene is a colorless, odorless, non-toxic, translucent solid substance. Due to its excellent thermoplasticity, chemical resistance, heat resistance, electrical insulation, high-strength mechanical properties and good high wear-resistant processing properties, polypropylene has been rapidly used in machinery, automobiles, and electronic appliances since its inception. , construction, textile, packaging, agriculture, forestry, fishery and food industry and many other fields have been widely developed and applied. [0003] Microbial infection has become the first killer of human health, and at the same time brought huge economic losses to people, especi...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L51/06C08L53/02C08K13/06C08K9/06C08K3/34C08K3/22C08K3/08C08K3/16C08K9/04
CPCC08L23/12C08K2201/011C08K2003/2241C08K2003/0806C08L2205/03C08L51/06C08L53/02C08K13/06C08K9/06C08K3/34C08K3/22C08K3/08C08K3/16C08K9/08C08K9/04Y02A50/30
Inventor 陈业中王林罗忠富陈锐张宇黄险波叶南飚马金成袁强
Owner CHENGDU KINGFA SCI & TECH ADVANCED MATERIALS CO LTD
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