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Flame retardant thermoplastic resin composition

A composition and resin technology, applied in the field of flame retardant polymer compositions, can solve problems such as deformation and physical property changes, limiting applications, etc.

Inactive Publication Date: 2009-01-14
LOTTE ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, depending on the ambient atmospheric conditions, molded articles produced from the composition by injection molding undergo deformation and severe changes in physical properties, thus limiting the application of the composition in products

Method used

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  • Flame retardant thermoplastic resin composition
  • Flame retardant thermoplastic resin composition
  • Flame retardant thermoplastic resin composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～8

[0106] Components (A)-(D) were mixed as shown in Table 1 and Table 2, and each mixture was extruded in the form of pellets at 180-250° C. using a conventional twin-screw extruder. The resin pellets were dried at 80°C for 3 hours, and molded into test samples with a 6oz injection molding machine at 180-280°C, and the mold temperature was 40-80°C. The flame retardancy and physical properties of the test samples were evaluated according to the following procedures.

[0107] The flame retardancy of the test samples was determined according to UL 94VB with thicknesses of 1 / 12" and 1 / 8". The notched Izod impact strength (kgf·cm / cm) of the test specimens was measured at 23° C. according to ASTM 256A with a thickness of 1 / 8″. The heat resistance was measured under a load of 5 kgf according to ASTM D 1525.

[0108] For a sample whose size is 125mm (width) x 13mm (length) x 1.6mm (thickness), its moisture absorption and heat sagging are measured. The moisture absorption rate was measu...

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Abstract

A polymer composition includes a rubber-modified aromatic vinyl resin and a cyclic phosphonate ester compound. Embodiments of the composition demonstrate good impact strength, flame retardancy, heat resistance. Some embodiments additionally demonstrate moisture resistance and low heat sag. A shaped article and an electronic device can be made from the flame retardant polymer composition.

Description

technical field [0001] The present invention relates to a flame retardant polymer composition which can be used to produce molded articles with good physical and mechanical properties. Background technique [0002] In general, rubber-modified aromatic vinyl resins exhibit good processability, superior physical properties, especially high impact strength, and good appearance. Based on these advantages, rubber-modified aromatic vinyl resins are used in a wide variety of applications, including electrical and electronic products and office machines. However, when these resins are used in heat-dissipating equipment such as computers and facsimile machines, they tend to burn off. Therefore, development of a method for imparting flame retardancy to rubber-modified styrene resins has been urgently desired. [0003] A widely known method of imparting flame retardancy is the addition of halogen-containing compounds with an optional antimony catalyst. Inclusion of halogen-containin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L55/02
CPCC08F279/04C08L55/02C08K5/5357C08L51/04C08F279/02C08L2666/02C08L25/12C08L2201/02
Inventor 具正焕洪尚铉裴洙学崔真丸
Owner LOTTE ADVANCED MATERIALS CO LTD
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