A nano-modified environmentally friendly halogen-free flame-retardant polypropylene and its preparation method

A flame-retardant polypropylene and nano-modification technology, which is applied in the field of polypropylene, can solve the problems of low mechanical properties of flame-retardant polypropylene, and achieve the effects of improving flame-retardant performance, good barrier effect, and increasing elastic modulus

Inactive Publication Date: 2016-08-17
HENAN UNIV OF SCI & TECH
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problem of low mechanical properties of flame-retardant polypropylene in the prior art, and provide a nano-modified environmentally friendly halogen-free flame-retardant polypropylene and its preparation method. By adding nano-modified particles and additives, the polypropylene Improved impact resistance and flexural strength, improving its mechanical properties

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A nano-modified environmentally friendly halogen-free flame-retardant polypropylene and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A nano-modified environment-friendly halogen-free flame-retardant polypropylene, which is composed of a polypropylene matrix, a halogen-free expansion flame retardant, a synergistic flame-retardant conductive filler, additives and nano modified particles, a compatibilizer, an antioxidant, and a lubricant. In parts by weight: the polypropylene matrix is ​​composed of 66 parts of high impact polypropylene; the halogen-free intumescent flame retardant is 20 parts of phosphorus nitrogen series flame retardant; the synergistic flame-retardant conductive filler is 2 parts of carbon black with a particle size of 15nm; the additive is 3 parts of hollow glass beads with a particle size of 1-50 microns; the nano-modified particle is 1 part of nano-SiO modified by KH550 2 , KH550 and nano SiO 2 The weight ratio is 1:100; the compatibilizer is 5 parts maleic anhydride grafted polypropylene; the antioxidant is 1 part phosphite antioxidant; the lubricant is 2 parts Methyl silicone oil....

Embodiment 2

[0035] A nano-modified environmentally friendly halogen-free flame-retardant polypropylene, composed of 66 parts of high impact polypropylene, 2 parts of nano carbon black, 20 parts of halogen-free expansion flame retardant, and 2 parts of hollow glass with a particle size of 1-50 microns Beads, 2 parts of nano SiO modified by KH550 2 , 5 parts of maleic anhydride grafted polypropylene, 1 part of phosphite antioxidant and 2 parts of simethicone; among them, the particle size of carbon black is 15nm, and the particle size of nano-modified particles is 10-40nm ; The halogen-free intumescent flame retardant is a phosphorus-nitrogen series of flame retardants, with a phosphorus content of 0-24%, a nitrogen content of 0-22%, and a particle size of 2-10um.

[0036] The specific preparation steps of a kind of nano-modified environmentally friendly halogen-free flame-retardant polypropylene are as follows: Step 1. Combine KH550 and nano-SiO 2 Mix at a weight ratio of 1:100 to prepare nano...

Embodiment 3

[0043] A nano-modified environmentally friendly halogen-free flame-retardant polypropylene, composed of 66 parts of high impact polypropylene, 2 parts of nano carbon black, 20 parts of halogen-free expansion flame retardant, and 1 part of hollow glass with a particle size of 1-50 microns Microbeads, 3 parts of nano-SiO modified by KH550 2 , 5 parts of maleic anhydride grafted polypropylene, 1 part of phosphite antioxidant and 2 parts of simethicone; among them, the particle size of carbon black is 15nm, and the particle size of nano-modified particles is 10-40nm ; The halogen-free intumescent flame retardant is a phosphorus-nitrogen series of flame retardants, with a phosphorus content of 0-24%, a nitrogen content of 0-22%, and a particle size of 2-10um.

[0044] The specific preparation steps of a kind of nano-modified environmentally friendly halogen-free flame-retardant polypropylene are as follows: Step 1. Combine KH550 and nano-SiO 2 Mix at a weight ratio of 1:100 to prepare ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to view more

Abstract

The invention discloses environment-friendly nano modified halogen-free flame retardant polypropylene and a preparation method thereof. The environment-friendly nano modified halogen-free flame retardant polypropylene comprises the following raw materials in parts by weight: 66 parts of polypropylene matrix, 20 parts of halogen-free expanded flame retardant, 2 parts of conductive packing, 1-3 parts of nano modified particles, 1-3 parts of additive, 5 parts of compatilizer, 1 part of an antioxidant and 2 parts of a lubricating agent. The preparation method comprises the following steps: evenly mixing the polypropylene matrix, the compatilizer, the antioxidant and the lubricating agent by virtue of a high-speed mixer, and then putting the mixed material into a precision open mill; after the mixed material is melted, adding the halogen-free expanded flame retardant and the conductive packing, melting and mixing; and then adding the nano modified particles and the additive; and mixing in the precision open mill, thus obtaining polypropylene. According to the environment-friendly nano modified halogen-free flame retardant polypropylene, the nano modified particles and hollow glass beads are adopted as flame retardant synergists, so that the flame retardant property of the polypropylene can be improved, the viscosity of polypropylene polymer melt can also be significantly reduced, the processability is improved, the heat stability is improved, and the environment-friendly nano modified halogen-free flame retardant polypropylene is excellent in yellowing resistance, good in impact resistance and good in bending strength.

Description

Technical field [0001] The invention relates to the field of polypropylene, in particular to a nano-modified environment-friendly halogen-free flame-retardant polypropylene and a preparation method thereof. Background technique [0002] According to "Polymer Combustion and Flame Retardant Technology" (edited by Zhang Jun, Ji Kuijiang, Xia Yanzhi, etc., Chemical Press, April 2005), polypropylene itself is a flammable material with an oxygen index of only 17.0~18.0%, and The char formation rate is low, and it is easy to produce droplets during combustion, so it is required to be flame-retardant modification in many applications. At present, flame retardants are mainly used to add flame retardants to polypropylene at home and abroad. Halogen-containing flame retardants emit a large amount of smoke and the hydrogen halide gas released is corrosive, and many countries have banned their use. [0003] According to "Advanced Polymer Processing Technology" (Polymers for Advanced Technolog...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/12C08K13/06C08K9/06C08K3/04C08K7/28C08K3/36
CPCC08L23/12C08L2201/02C08L2201/22C08L2205/03C08L2205/08C08L51/06C08L83/04C08K13/06C08K9/06C08K3/36C08K3/04C08K7/28C08K5/524
Inventor 张炎斌刘继纯魏风军于卓立
Owner HENAN UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap