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Nano-modified reinforced toughened antibacterial polypropylene random copolymer special material and preparation method thereof

A technology of strengthening, toughening, and random copolymerization, which is applied in the field of plastic materials, can solve problems such as difficult dispersion, polymer performance damage, and failure to achieve, so as to improve antibacterial and anti-mildew effects, improve flame retardant performance, and improve flame retardant performance. Effect

Active Publication Date: 2021-02-26
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After these silver ion antibacterial agents are dispersed in the natural environment, nano-silver particles will exist widely in soil, water and organisms for a long time, so the use of nano-silver particles as antibacterial agents will have adverse effects on humans and the natural environment
[0008] And above-mentioned all prior art also all do not solve the dispersion problem of nanometer antibacterial material
Nanomaterials exist in the form of nanoscale particles, which have a strong agglomeration force and are difficult to disperse with general processing equipment. If nanomaterial particles cannot be depolymerized and dispersed in polymers, the expected nanoeffects and corresponding functions will not be achieved. , and even destroy the original properties of the polymer

Method used

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  • Nano-modified reinforced toughened antibacterial polypropylene random copolymer special material and preparation method thereof
  • Nano-modified reinforced toughened antibacterial polypropylene random copolymer special material and preparation method thereof
  • Nano-modified reinforced toughened antibacterial polypropylene random copolymer special material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The preparation method of nano-modified reinforced toughened antibacterial random copolymerized polypropylene special material comprises the following steps:

[0043] 1. Preparation of environment-friendly nano ammonium polyphosphate coated modified flame retardant:

[0044] Formula (by mass ratio):

[0045]

[0046] 1) Mix ammonium polyphosphate, aluminum hydroxide, deionized water, and hyperdispersant according to a certain mass ratio of the formula, mix them at high speed on a high-speed emulsifier for 1 hour, and the speed of the high-speed emulsifier is 4000 rpm. The nano-dispersion grinder performs strong shear dispersion on the mixture, the speed is 5000 rpm, and the shear dispersion is 5 hours, so that the ammonium polyphosphate and aluminum hydroxide are depolymerized and dispersed into a nano-mixed suspension. The obtained nano-mixed suspension The particle content of inorganic nanomaterial particles with a particle size below 102nm accounts for more than ...

Embodiment 2

[0060] The preparation method of nano-modified reinforced toughened antibacterial random copolymerized polypropylene special material comprises the following steps:

[0061] 1. Preparation of environment-friendly nano ammonium polyphosphate coated modified flame retardant:

[0062] Formula (by mass parts):

[0063]

[0064] 1) Mix ammonium polyphosphate, aluminum hydroxide, deionized water, and hyperdispersant according to a certain mass ratio of the formula, and mix them on a high-speed emulsifier for 1.5 hours at a high speed. The speed of the high-speed emulsifier is 5000 rpm. The nano-dispersion grinder performs strong shear dispersion on the mixture, the speed is 8000 rpm, and the shear dispersion is 3 hours, so that the ammonium polyphosphate and aluminum hydroxide are depolymerized and dispersed into a nano-mixed suspension. The obtained nano-mixed suspension The particle content of inorganic nanomaterial particles with a particle size below 100nm accounts for more ...

Embodiment 3

[0079] The preparation method of nano-modified reinforced toughened antibacterial random copolymerized polypropylene special material comprises the following steps:

[0080] 1. Preparation of environment-friendly nano ammonium polyphosphate coated modified flame retardant:

[0081] Formula (by mass ratio):

[0082]

[0083] 1) Mix ammonium polyphosphate II, aluminum hydroxide, deionized water, and hyperdispersant (TG-F063) according to a certain mass ratio of the formula, and perform high-speed mixing on a high-speed emulsifier for 2 hours, and the speed of the high-speed emulsifier is 6000 rpm / min, and then through the high-speed nano-dispersion grinder, the mixture is strongly sheared and dispersed at a speed of 10,000 rpm, and sheared and dispersed for 2 hours, so that the ammonium polyphosphate and aluminum hydroxide are depolymerized and dispersed into a nano-mixed suspension. In the obtained nano-mixed suspension, the particle content of inorganic nano-material part...

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Abstract

The invention discloses a nano-modified reinforced toughened antibacterial polypropylene random copolymer special material and a preparation method thereof. The preparation method comprises the following steps of: preparing an environment-friendly nano ammonium polyphosphate coated modified flame retardant; preparing an ion-doped zinc oxide nanocrystalline powder reinforced and toughened antibacterial master batch; uniformly mixing polypropylene random copolymer, the environment-friendly nano ammonium polyphosphate coated modified flame retardant, an antioxidant, the ion-doped zinc oxide nanocrystalline powder reinforced and toughened antibacterial master batch and color master batch on a high-speed mixer; putting the mixture into a plastic internal mixer for internal mixing; discharging aproduct, mixing the product by using an open mill to obtain sheets; extruding the sheets by using an extruder; and performing cooling and granulating. Compared with the performance of a pure material, the tensile breaking strength of the special material is increased by 10-22%, the elongation at break is increased by 40-180%, the impact strength at 22 DEG C is increased by 2-12%, the antibacterial rate is 99.3-99.9%, and the flame retardant property reaches the V-0 level of the UL-94 standard.

Description

technical field [0001] The invention relates to special materials for polypropylene, in particular to a special material for nano-modified random polypropylene pipes and a preparation method thereof. More specifically, it refers to a special material for random copolymerized polypropylene (PPR or PP-R) with high reinforcement, high toughness, flame retardancy and antibacterial properties, which is suitable for The production of PPR pipes belongs to the technical field of plastic materials. Background technique [0002] Ethylene-propylene random copolymerization Polypropylene (PPR) is a kind of polypropylene, which is obtained by copolymerization of propylene and a small amount of ethylene under the action of certain temperature, pressure and catalyst. Mainly used as water pipe material, it has the advantages of energy saving and material saving, environmental protection, light weight and high strength, corrosion resistance, smooth inner wall without scaling, easy constructi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/14C08L53/02C08K9/10C08K3/32C08K3/22C08K5/134C08K5/526C08K13/06
CPCC08L23/14C08K2201/011C08K2003/323C08K2003/2227C08K2003/2296C08L2201/02C08L2203/18C08L53/02C08K9/10C08K3/32C08K3/22C08K5/1345C08K5/526C08K13/06
Inventor 牟文杰赵良知
Owner SOUTH CHINA UNIV OF TECH
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