Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Composition of halogen-free flame-retardant polystyrene plastic and preparation method thereof

A technology of polystyrene and plastics, applied in the field of flame-retardant plastic formulation and its preparation, can solve the problem of reducing the mechanical properties and processing properties of polystyrene plastics, the decrease of impact strength, and the decrease of tensile strength of high-impact polystyrene And other issues

Inactive Publication Date: 2013-05-29
SHENZHEN POLYTECHNIC
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using inorganic metal hydroxide as a flame retardant, when it is necessary to achieve a certain flame retardant effect, its dosage needs to reach more than 60% (weight percentage). If such a large amount of metal hydroxide is added to polystyrene plastics, it will seriously reduce The mechanical properties and processing properties of polystyrene plastics, studies have shown that the addition of 60% magnesium hydroxide will cause a 30% decrease in the tensile strength of high impact polystyrene (HIPS), and a 50% decrease in impact strength

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
  • Composition of halogen-free flame-retardant polystyrene plastic and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1 of the present invention: a formula of halogen-free flame-retardant polystyrene plastics, which includes 100 parts of high-impact polystyrene (HIPS), silicone rubber and its vulcanized crosslinking agent in parts by weight 15 parts, 5 parts of toughening agent styrene-butadiene-styrene block copolymer (SBS), 0.5 part of silane coupling agent (KH550), 2 parts of ethylene bis fatty acid amide (EBS) and liquid paraffin 0.5 parts of processing aids composed of 2.5 parts.

[0021] A method for preparing halogen-free flame-retardant polystyrene plastics. According to the parts by weight of the above formula, the silane coupling agent (KH550), organic silicon rubber and its vulcanized crosslinking agent are mixed and granulated through an open mill , to obtain pellets B; pellets B and high impact polystyrene (HIPS), styrene-butadiene-styrene block copolymer (SBS), ethylene bis fatty acid amide (EBS), liquid paraffin Together, they are extruded and granulated by a...

Embodiment 2

[0023] Embodiment 2 of the present invention: a formula of halogen-free flame-retardant polystyrene plastics, which includes 100 parts of high-impact polystyrene (HIPS), silicone rubber and its vulcanized crosslinking agent in parts by weight 30 parts, 100 parts of magnesium hydroxide, 20 parts of red phosphorus, 15 parts of block copolymer (SBS) of toughening agent styrene-butadiene-styrene, 0.5 part of silane coupling agent (KH550), made of liquid paraffin 0.5 parts and 2.5 parts of processing aids composed of 2 parts of ethylene bis fatty acid amide (EBS).

[0024] A method for preparing halogen-free flame-retardant polystyrene plastics, comprising placing magnesium hydroxide, red phosphorus, and a silane coupling agent (KH550) in a blender and stirring evenly according to the parts by weight of the above formula to obtain a stirring material A; Mixing material A, silicone rubber and its vulcanized crosslinking agent are mixed and granulated by an internal mixer to obtain p...

Embodiment 3

[0026] Embodiment 3 of the present invention: a formula of halogen-free flame-retardant polystyrene plastics, which includes 100 parts of high-impact polystyrene (HIPS), silicone rubber and its vulcanized crosslinking agent in parts by weight 22.5 parts, 70 parts of magnesium hydroxide, 8 parts of red phosphorus, 10 parts of block copolymer (SBS) of toughening agent styrene-butadiene-styrene, 0.5 part of silane coupling agent (KH550), made of liquid paraffin 0.5 parts and 2.5 parts of processing aids composed of 2 parts of ethylene bis fatty acid amide (EBS).

[0027] A method for preparing halogen-free flame-retardant polystyrene plastics, comprising placing magnesium hydroxide, red phosphorus, and a silane coupling agent (KH550) in a blender and stirring evenly according to the parts by weight of the above formula to obtain a stirring material A; Mixing material A, silicone rubber and its vulcanized crosslinking agent are mixed and granulated by an internal mixer to obtain p...

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

No PUM Login to View More

Abstract

The invention discloses a composition of halogen-free flame-retardant polystyrene plastic and a preparation method thereof. The composition of halogen-free flame-retardant polystyrene plastic comprises 100 parts of polystyrene plastic, 15-30 parts of organic silicon rubber and vulcanized cross linker thereof, 0-100 parts of magnesium hydroxide, 0-20 parts of red phosphorus, 5-15 parts of toughening agent, 0.5 parts of coupling agent and 1-3 parts of processing agent. The polystyrene plastic prepared according to the composition has a halogen-free flame-retardant effect, can effectively reducethe adding amount of the magnesium hydroxide on the premise that the same flame-retardant effect is achieved, so that the mechanical property and the processing performance of the polystyrene plasticare not affected. The prepared halogen-free flame-retardant polystyrene plastic is applied to the environmental protection and flame retardance in the field of electrical appliances.

Description

technical field [0001] The invention relates to a flame-retardant plastic formulation and a preparation method thereof in the field of electrical appliances, more specifically, the invention relates to a formulation of a halogen-free flame-retardant polystyrene plastic and a preparation method thereof. Background technique [0002] Polystyrene plastics are widely used in the field of electrical appliances. It has good processing performance and electrical performance, and through certain coordination, it has excellent mechanical properties. However, polystyrene plastics without flame retardant treatment are very easy to catch fire. Its oxygen index is low, it is easy to catch fire, it has a large calorific value, and it emits dense black smoke when it burns. The requirements are very high, so polystyrene plastics without flame retardant treatment basically cannot be used in the field of electrical appliances. [0003] In order to achieve the purpose of flame retardancy, pol...

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): C08L25/06C08L51/00C08L53/02C08L83/04C08K13/06C08K3/22C08K3/02
Inventor 罗超云左建东赵建青林峰林雪春肖望东
Owner SHENZHEN POLYTECHNIC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com