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Halogen-free smoke-suppression flame-retardant polypropylene composite material and preparation method thereof

A composite material and hydrotalcite technology, applied in the field of flame-retardant composite materials, can solve the problems of poor compatibility of PP, low flame-retardant efficiency, and difficult dispersion, so as to increase compatibility, improve smoke suppression performance, dispersion and combination Good results

Active Publication Date: 2016-04-13
QUZHOU UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, hydrotalcite and its analogs are a kind of inorganic flame retardants that have attracted attention in recent years because of their good smoke suppression and flame retardant properties and filling properties, but they still have poor compatibility with PP and are not easy to disperse well in PP. , leading to problems such as high addition amount and low flame retardant efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A halogen-free, smoke-suppressing and flame-retardant PP composite material in this embodiment is composed of the following components by mass percentage: 72% of polypropylene, 12% of laminate-exfoliated hydrotalcite, 5% of organosilicon-modified hydrotalcite, boric acid intercalated Layer hydrotalcite 5%, toughening agent 5%, antioxidant 0.5%, lubricant 0.5%.

[0022] The above-mentioned composite material is prepared by the following steps:

[0023] (1) Weigh each component according to weight percentage;

[0024] (2) Fully knead each component in a kneader, where the mixing temperature is 40°C;

[0025] (3) Extrude the mixed material in a twin-screw extruder at a temperature of 230°C and control the speed at 90 rpm.

Embodiment 2

[0027] A halogen-free smoke-suppressing flame-retardant PP composite material in this embodiment is composed of the following components in mass percentage: 80% polypropylene, 8% laminate-exfoliated hydrotalcite, 4% organosilicon-modified hydrotalcite, boric acid intercalated Layer hydrotalcite 4%, toughening agent 3%, antioxidant 0.5%, lubricant 0.5%.

[0028] The above-mentioned composite material is prepared by the following steps:

[0029] (1) Weigh each component according to weight percentage;

[0030] (2) Fully knead each component in a kneader, where the mixing temperature is 60°C;

[0031] (3) Extrude the mixed material in a twin-screw extruder at a temperature of 200°C and a rotational speed of 110 rpm.

Embodiment 3

[0033] A halogen-free smoke-suppressing and flame-retardant PP composite material in this embodiment is composed of the following components in mass percentage: 65% polypropylene, 15% laminate-exfoliated hydrotalcite, 6% organosilicon-modified hydrotalcite, boric acid intercalated Layer hydrotalcite 8%, toughening agent 5%, antioxidant 0.5%, lubricant 0.5%.

[0034] The above-mentioned composite material is prepared by the following steps:

[0035] (1) Weigh each component according to weight percentage;

[0036] (2) Fully knead each component in a kneader, and the mixing temperature is 90°C;

[0037] (3) Extrude the mixed material in a twin-screw extruder at a temperature of 160-250°C and control the speed at 120 rpm.

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Abstract

The invention discloses a halogen-free smoke-suppression flame-retardant PP composite material and a preparation method thereof. The halogen-free smoke-suppression flame-retardant PP composite material comprises the following components in percentage by weight: 65%-85% of polypropylene, 6%-15% of laminate peel type hydrotalcite, 3%-6% of organosilicon modified hydrotalcite, 3%-8% of boric acid intercalated hydrotalcite, 2%-6% of a toughening agent, 0.5%-1% of an antioxidant and 0.5%-2% of a lubricant. Performance tests present that the composite material is good in smoke suppression performance and flame retardance and simultaneously preserves relatively good mechanical property.

Description

technical field [0001] The invention relates to a flame-retardant composite material, which belongs to the technical field of polymer material modification, in particular to a halogen-free smoke-suppressing flame-retardant polypropylene composite material and a preparation method thereof. Background technique [0002] Polypropylene (PP) is a general-purpose polymer material with excellent comprehensive properties, which is widely used in electronic appliances, automobiles and other fields. With the increasing scope of its application, higher requirements are placed on the flame retardancy of polypropylene. At present, halogen-containing flame retardants (especially brominated flame retardants) are widely used in polymer flame-retardant materials, and have played a good flame-retardant effect. However, materials using halogen-containing flame retardants will produce a large amount of toxic and corrosive gases and smoke during the combustion process, causing people to suffoca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K13/06C08K9/04C08K9/06C08K9/00C08K9/02C08K3/26
CPCC08K3/26C08K9/00C08K9/02C08K9/04C08K9/06C08K13/06C08K2201/014C08L2201/02C08L2201/22C08L23/12
Inventor 吕亮陈剑君王玉林
Owner QUZHOU UNIV
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