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Composition of a blend of polyamide and polyester resins

A technology of polyamide resin and polyester resin, applied in the field of mixed compositions with improved compatibility, can solve the problems of unsatisfactory processing performance and properties of polymer mixtures

Active Publication Date: 2012-05-30
POLYAMIDE HIGH PERFORMANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when epoxy resins with low epoxy equivalent weight are used in polymer blends, the processability and properties of the polymer blends are still unsatisfactory and need to be improved

Method used

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  • Composition of a blend of polyamide and polyester resins
  • Composition of a blend of polyamide and polyester resins
  • Composition of a blend of polyamide and polyester resins

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 to 8 and comparative Embodiment 1 to 9

[0086] In an exemplary embodiment, the above selected components were uniformly mixed in a super mixer according to the respective mixing ratios of Examples and Comparative Examples. A twin-screw extruder (inner diameter 30mm, L / D=30) was used. Considering the melting point of the resin used, the temperature setting of the barrel inside the extruder is set to about 250°C when polyamide-6 resin is used, and the temperature setting of the barrel inside the extruder is set when polyamide-66 resin is used The temperature is about 280°C, and the gas in the screw is exhausted at a screw rotation speed of 250 to 300 rev / min and a vacuum pump pressure of 50 to 70 cm Hg. The components are thoroughly mixed in the extruder barrel and the resulting strands are rapidly cooled in a cold water bath and granulated to a defined size using a granulator.

[0087] An injection molding machine (German, ENGEL) with a closing force of 80 metric tons and an injection volume of 189.44 cc (6.4 oz) wa...

Embodiment 9 to 11

[0109] For the preparation of compositions containing recycled polyester, the protocol was the same as above. The components selected above were used according to the respective mixing ratios shown in the table below, where the properties are indicated.

[0110] Table 4

[0111] The same and satisfactory mechanical properties were observed for the various formulations of the invention.

Embodiment 12 and comparative Embodiment 12

[0113] For the preparation of the flame retardant composition, the protocol is the same as above. Components were used according to each mixing ratio of the examples and the components are shown in the table below, wherein the properties are shown in the table.

[0114] table 5

[0115]

[0116] The organophosphorus compound was Exolit OP1230 from Clariant. MPP is melamine polyphosphate.

[0117] It can thus be seen that quite pronounced flame retardant properties can be obtained for the inventive mixtures when lower amounts (30% reduction) of flame retardant are used in the formulation.

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Abstract

The present invention relates to a resin blend composition of a polyamide resin and a polyester resin, which includes a polyamide resin, a polyester resin and an epoxy resin. The resin blend composition according to the present invention has improved compatibility between the polyamide resin and the thermoplastic polyester resin, and therefore has superior mechanical properties (strength, bending strength, elasticity, abrasion resistance, impact strength), chemical properties (solvent resistance), thermal resistance, dimensional stability, paintability, etc.

Description

technical field [0001] The present invention relates to a mixed composition of a polyamide resin and a polyester resin having improved compatibility, and more particularly, the present invention relates to having improved compatibility between the above two resins (which are generally known to be incompatible with each other) ) mixed composition. Background technique [0002] Polyamide resin has good mechanical, chemical and thermal properties as well as adhesion properties with paints, etc., so it is used in many fields. However, polyamide resins have low dimensional stability, and the mechanical properties of polyamide resins decrease as water is absorbed. Therefore, attempts have been made to improve the properties of polyamide resins by mixing polyamide resins in a molten state with another thermoplastic resin (eg, polyester resin) to form a mixture in a molten state. However, due to the low compatibility of thermoplastic polyamide resins with thermoplastic polyester r...

Claims

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Application Information

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IPC IPC(8): C08L77/02C08L77/04C08L67/02C08L77/06C08L77/00C08L67/00
CPCC08L67/00C08L67/02C08L77/02C08L63/00C08L77/00C08L77/06C08L2201/02C08L2205/03C08L2205/08C08L2666/14C08L2666/20C08L2666/22C08L2666/18
Inventor 林莫根李光尚刘英喆
Owner POLYAMIDE HIGH PERFORMANCE
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