Flame retardant thermoplastic resin composition and molded products
A technology of thermoplastic resin and composition, applied in the field of flame retardant thermoplastic resin composition, which can solve the problems of unsatisfactory resin compatibility, low dispersion, impact strength, heat resistance and unsatisfactory appearance
Inactive Publication Date: 2013-07-03
CHEIL IND INC
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] However, existing polyphosphonates are unsatisfactory in terms of impact strength, heat resistance, and appearance, and partially degrade thermoplastic resins due to their structural characteristics, thereby resulting in deterioration of physical properties
Furthermore, existing polyphosphonates exhibit unsatisfactory compatibility with resins and low dispersion
Method used
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Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1-2 and comparative example 1-6
[0089] Each component as defined above was fed into a conventional twin-screw extruder in the amount shown in Table 1, and then extruded at a temperature range of 200°C to 280°C to obtain pellets. The pellets were dried at 70°C for 2 hours and molded by a 10 oz injection molding machine at a molding temperature of 180°C to 280°C and a mold temperature of 40° to 80°C to make samples. The physical properties of the prepared samples were evaluated according to the following methods. The results are listed in Table 1.
[0090] Physical property evaluation
[0091] (1) Flame retardancy: The flame retardancy was measured on a 1 / 8" thick sample according to the UL94VB flame retardancy standard.
[0092] (2) Heat resistance (VST): According to ISO R 306, the heat resistance was measured under the conditions of 5kg, 50°C / HR.
[0093] (3) Heat distortion temperature: The heat distortion temperature was measured by applying a surface pressure of 1.82 MPa according to ASTM D648 (° C....
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Abstract
The invention discloses a flame retardant thermoplastic resin composition and molded products. The flame retardant thermoplastic resin composition comprises 100 parts by weight of a base resin composed of an aromatic vinyl resin and a polyphenylene oxide resin; and 0.1 to 30 parts by weight of a polyphosphonate copolymer represented by Formula 1: (wherein A and B are each independently a single bond, a C 1 -C 5 alkylene group, a C 1 -C 5 alkylidene group, a C 5 -C 6 cycloalkylidene group, -S- or -SO 2 -, provided that A and B are not identical to each other; R 5 and R 6 are each independently a substituted or unsubstituted C 1 -C 6 alkyl group, a substituted or unsubstituted C 6 -C 20 aryl group, or a substituted or unsubstituted C 6 -C 20 aryloxy group; R 1 , R 2 , R 3 and R 4 are each independently a substituted or unsubstituted C 1 -C 6 alkyl group, a substituted or unsubstituted C 3 -C 6 cycloalkyl group, a substituted or unsubstituted C 6 -C 12 aryl group, or a halogen atom; a and b are each independently an integer from 0 to 4; and n and m are each independently an integer from 1 to 500).
Description
technical field [0001] The invention relates to a flame-retardant thermoplastic resin composition. More specifically, the present invention relates to a flame retardant thermoplastic resin composition, by including as a flame retardant, a polymerizable phosphorus compound having a specific structure of two or more repeating units in its main chain, the flame retardant The thermoplastic resin composition is environmentally friendly and has a good balance of physical properties including not only flame retardancy but also transparency, heat resistance, impact strength, appearance and the like. Background technique [0002] As environmental concerns continue, regulation of existing halogenated flame retardants has intensified in many countries. In line with this trend, research is actively being conducted to develop non-halogen flame retardants capable of replacing halogen flame retardants. In particular, research has focused on phosphorus flame retardants. The most common p...
Claims
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IPC IPC(8): C08L51/00C08L71/12C08L85/02
CPCC08L51/04C08L71/12C08L85/02C08L53/02C09K21/12C09K21/14
Inventor 张胜宇李善爱高彰鸿李旼洙安盛熙洪尚铉
Owner CHEIL IND INC