Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of halogen-free flame-retardant polypropylene composite material and preparation method thereof

A technology of flame retardant polypropylene and composite materials, applied in the field of flame retardant composite materials, can solve the problems of decreased mechanical properties of polypropylene composite materials, large amount of halogen-free flame retardants, and insufficient use of synergistic effects. Substantial features, good mechanical properties, good synergy effect

Inactive Publication Date: 2011-12-14
ZHONGSHAN DIANSHI PLASTIC
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Phosphorus, silicon, and hydroxide have been used as halogen-free flame retardants in flame retardant systems, but the synergistic effect between them has not been fully utilized
Due to the large addition of halogen-free flame retardants, the mechanical properties of polypropylene composites are severely reduced

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 kind of halogen-free flame-retardant polypropylene composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The preparation method of the halogen-free flame-retardant polypropylene composite material is to mix the following components in parts by weight for 3-5 minutes in a high-speed mixer: homopolypropylene 3300g, phosphorus-silicon copolymer flame retardant 875g, hydrogen 750g of aluminum oxide, 60g of anti-dripping agent, 15g of antioxidant, wherein the phosphorus-silicon copolymer flame retardant is obtained by copolymerizing vinyl phosphoric acid amine and vinyl phenyl dimethoxysilane;

[0026] Preparation method of phosphorus silicon copolymer flame retardant: in methanol / water mixed solvent, polyvinylpyrrolidone is used as dispersant and azobisisobutyronitrile is used as initiator, and the copolymer is prepared by dispersion polymerization method. The two are close to alternate copolymerization, copolymerization The composition is approximately 1:1. Add an aqueous solution of vinylphenyldimethoxysilane with a mass concentration of 13% into the flask, add hydrochloric ...

Embodiment 2

[0029] A halogen-free flame-retardant polypropylene material composed of the following components in parts by weight: homopolypropylene 3400g, phosphorus-silicon copolymer flame retardant 905g, aluminum hydroxide 620g, anti-dripping agent 60g, antioxidant 15g, except components Except for different parts by weight, other preparation methods were implemented according to the method in Example 1, and the performance test results of the processed samples are shown in Table 1.

Embodiment 3

[0031] A halogen-free flame-retardant polypropylene material composed of the following components in parts by weight: homopolypropylene 3500g, phosphorus-silicon copolymer flame retardant 925g, aluminum hydroxide 500g, anti-dripping agent 60g, antioxidant 15g, except components Except for different parts by weight, other preparation methods were implemented according to the method in Example 1, and the performance test results of the processed samples are shown in Table 1.

[0032] In order to compare the synergistic effect of the phosphorus-silicon copolymer flame retardant on the flame-retardant effect and the improvement of the mechanical properties, we conducted a comparative test, and did not add the phosphorus-silicon copolymer flame retardant to the components of the preparation of the flame retardant. There is no preparation process of phosphorus-silicon copolymer flame retardant, the composition and proportion are as follows: the following sample composition, other pre...

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
oxygen indexaaaaaaaaaa
Login to View More

Abstract

The invention relates to an environment-friendly halogen-free flame-retardant polypropylene composite material and a preparation method thereof. The composite is composed of the following components in parts by weight: homopolypropylene 57-72, phosphorus-silicon copolymer flame retardant 13-26 , Aluminum hydroxide 10-15, anti-dripping agent 0.1-1.5, antioxidant 0.1-0.3. The self-made phosphorus-silicon copolymer flame retardant makes full use of the synergistic effect of phosphorus-silicon flame retardancy. It fundamentally overcomes the shortcomings of halogen-containing flame-retardant polypropylene materials that pollute the environment and harm the human body, and has the characteristics of low smoke, low toxicity, and no molten droplets when burning. Due to the reduced amount of flame retardant added, polypropylene composites have good mechanical properties.

Description

[0001] technical field [0002] The invention relates to an environment-friendly halogen-free flame-retardant polypropylene composite material and a preparation method thereof, belonging to the technical field of flame-retardant composite materials. Background technique [0003] Due to its low price and excellent overall performance, polypropylene is widely used. However, polypropylene has a fatal disadvantage. Its oxygen index is very low (17.4), it is easy to burn, and the combustion calorific value is large, resulting in a large number of molten droplets. The flame spreads quickly and is not easy to extinguish. Most of the flame-retardant polypropylene currently on the market still uses a halogen / antimony composite flame-retardant system. Due to the potential danger of the currently used halogen / antimony flame retardant system to the environment and human body, under the EU RoHS Directive, the development of environmentally friendly halogen-free flame retardant polypropy...

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 Applications(China)
IPC IPC(8): C08L23/12C08L85/02C08K3/22C08K5/134C08F230/08C08F230/02B29C47/92B29C48/92
Inventor 王可王毅侯筱华
Owner ZHONGSHAN DIANSHI PLASTIC