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Organosilicon fire retardant for ABS and preparation method thereof

A flame retardant and organosilicon technology, which is applied in the field of flame retardants, achieves the effects of simple preparation process, small change in mechanical properties, and small addition amount

Inactive Publication Date: 2012-07-11
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, domestic research reports on silicone flame retardants for ABS are still blank.

Method used

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  • Organosilicon fire retardant for ABS and preparation method thereof
  • Organosilicon fire retardant for ABS and preparation method thereof
  • Organosilicon fire retardant for ABS and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 500ml dry four-necked flask equipped with mechanical stirring, thermometer, reflux condenser and N 2 Conduit, add 96g dimethylsiloxane mixed ring (DMC), 13.75g γ-aminopropylmethyldiethoxysilane (KH-902), 0.60g γ-methacryloxypropyl trimethoxy Silane (KH-570) and 0.50g of hexamethyldisiloxane and 0.055g of potassium hydroxide were equilibrated at 110°C for 3h, then heated to 135°C for 1h, and the remaining monomers were extracted under reduced pressure to obtain silicone flame retardant.

Embodiment 2

[0029] 500ml dry four-necked flask equipped with mechanical stirring, thermometer, reflux condenser and N 2 Catheter, add 96g dimethylsiloxane mixed ring (DMC), 12.5g N-β-aminoethyl-γ-aminopropylmethyldimethoxysilane (KH-602), 0.60g γ-methylpropene Acyloxypropyltrimethoxysilane (KH-570) and 0.50g hexamethyldisiloxane and 0.055g potassium hydroxide were equilibrated at 110°C for 3h, then heated to 135°C and kept for 1h, then extracted under reduced pressure The remaining monomers are used to obtain silicone flame retardants for ABS.

Embodiment 3

[0031] 500ml dry four-necked flask equipped with mechanical stirring, thermometer, reflux condenser and N 2 Conduit, add 96g dimethylsiloxane mixed ring (DMC), 13.75g gamma-aminopropylmethyldiethoxysilane (KH-902), 0.42g vinyltrimethoxysilane and 0.50g hexamethyl Disiloxane and 0.06g sodium hydroxide, react at 110°C for 3 hours, then raise the temperature to 135°C and keep it for 1 hour. After the reaction, the remaining monomer is extracted under reduced pressure to obtain a slightly milky white liquid silicone for ABS flame retardant.

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PUM

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Abstract

The invention relates to an organosilicon fire retardant for ABS and a preparation method thereof. The invention provides an organosilicon fire retardant for ABS with good consistency with ABS, small mechanical properties influence on ABS, less addition, excellent flame retardation performance and other characteristics and provides a preparation method of the organosilicon fire retardant for ABS.The organosilicon fire retardant of ABS is a polymer. Under a condition of nitrogen protection, dimethyl siloxane cycle, aminosilane, trialkoxy silane and catalyst undergo a reaction with hexamethyldisiloxane as an end-capping reagent at a temperature of 80 to 140 DEG C. After the reaction, a low-boiling-point substance is extracted by pressure reduction and the organosilicon fire retardant product for ABS can be obtained.

Description

technical field [0001] The invention relates to a flame retardant, in particular to a silicone flame retardant for ABS and a preparation method thereof. Background technique [0002] ABS (Acrylonitrile Butadiene Styrene) is a terpolymer composed of acrylonitrile, butadiene and styrene. As a thermoplastic engineering plastic, it is widely used for its excellent mechanical properties, chemical inertness and ease of processing. Automotive industry, electronics, electrical appliances, textiles, appliances and building materials and other fields. However, the flame retardancy of ABS itself is extremely poor, and its limiting oxygen index (LOI) is only about 18%. , so its scope of use is limited. [0003] At present, in terms of flame retardant modification of ABS, halogenated flame retardants still dominate, but because of their combustion, they produce a large amount of toxic and corrosive gases, and under certain conditions, they can also decompose carcinogens. Country restr...

Claims

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Application Information

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IPC IPC(8): C08L55/02C08L83/08C08G77/26C08G77/06
Inventor 林国良李毅伟曾小兰吕莉
Owner XIAMEN UNIV
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