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Flame-retardant polyamide resin composition and extrusion-molded product

A technology of polyamide resin and composition, which is applied in the field of flame-retardant polyamide resin composition and its molded products, and can solve the problems of poor appearance, lack of plasticizer, softness or toughness, etc.

Inactive Publication Date: 2005-09-14
MITSUBISHI ENG PLASTICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The plasticizer used in Japanese Patent Laid-Open No. 2002-309082 is less likely to reduce flame retardancy and has good heat resistance than conventional plasticizers. However, when used at a higher temperature, The plasticizer will evaporate and lose, and the effect of the plasticizer will not be achieved, which will inevitably reduce the softness or toughness to a certain extent, and the appearance will also deteriorate
[0007] That is to say, at present, it is impossible to obtain a polyamide resin composition excellent in flame retardancy, flexibility, environmental performance, and heat resistance, and an extruded article obtained by extrusion molding the polyamide resin composition.

Method used

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  • Flame-retardant polyamide resin composition and extrusion-molded product
  • Flame-retardant polyamide resin composition and extrusion-molded product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0067] The present invention will be described in more detail below by way of examples and comparative examples, but the present invention is not limited by the following examples unless the scope is exceeded.

[0068] [Physical Property Evaluation]

[0069] In the following examples, the measurement and evaluation of physical properties were carried out according to the following methods.

[0070] Melting point: Using DSC20 manufactured by Seiko Denshi Kogyo Co., Ltd., the melting peak temperature of a 10 mg sample was measured at a rate of 20° C. / min when the temperature was raised.

[0071] Viscosity value: Measured in accordance with ISO 307 (JIS K6933) standard.

[0072] Oxygen index: Measured in accordance with ISO 4589 (JIS K7201) standard.

[0073] Tensile elastic modulus (evaluation of softness): for the test piece (JIS K7162 test piece) left at 23°C and 65%RH for more than 48 hours, according to the ISO 5271 (JIS K7161) standard, at a speed of 5mm / min Measured bel...

reference example 1

[0084] Add 60kg of caprolactam and 200mL of water into a 200-liter autoclave, seal it after replacing it with nitrogen, raise the temperature to 150°C, and use a metering pump to inject the pre-prepared product under the condition of stirring to maintain an internal temperature of 150°C and an internal pressure of 2.5kg. A 40% aqueous solution of hexamethylenediamine adipate in a prescribed composition ratio. An internal pressure of 10 kg was maintained after injection, and the internal temperature was raised to 260°C. After the temperature is raised, the pressure is released, and the depressurization reaction is carried out until the prescribed stirring power is reached. After feeding nitrogen gas to maintain the pressure to normal pressure, stop stirring, pull out strips for granulation, use boiling water to extract and remove unreacted monomers and dry to obtain copolymerized polyamide.

reference example 2

[0086] Add 60kg of caprolactam and 200mL of water into a 200-liter autoclave, seal it after replacing it with nitrogen, raise the temperature to 150°C, and use a metering pump to inject the pre-prepared product under the condition of stirring to maintain an internal temperature of 150°C and an internal pressure of 2.5kg. A 40% aqueous solution of azelaic acid hexamethylenediamine salt in a prescribed composition ratio. After the injection, maintaining an internal pressure of 10 kg, the internal temperature was raised to 260°C. After the temperature is raised, the pressure is released, and the depressurization reaction is carried out until the prescribed stirring power is reached. After feeding nitrogen gas to maintain the pressure to normal pressure, stop stirring, pull out strips for granulation, use boiling water to extract and remove unreacted monomers and dry to obtain copolymerized polyamide.

[0087] (6) Triazine-based flame retardant: manufactured by Mitsubishi Chemica...

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Abstract

The present invention relates to a polyamide resin composition comprising 99 to 80 parts by weight of a polyamide base resin and 1 to 20 parts by weight of a triazine-based flame retardant, said polyamide base resin having constituting units comprising (a) polyamide 6 constituting units comprising a polycondensate of epsilon -caprolactam and (b) two or more kinds of polyamide constituting units comprising a polycondensate of hexamethylenediamine and a dicarboxylic acid having a carbon number of 6 to 11.

Description

technical field [0001] The present invention relates to a flame-retardant polyamide resin composition excellent in flexibility, mechanical strength, heat resistance, etc., and an extrusion molded article using the composition. More specifically, it relates to a product that has good flame retardancy without using a halogen-based flame retardant, and is excellent in flexibility, mechanical strength, heat resistance, and heat aging resistance, and is suitable for extrusion as pipes, sheets, etc. Flame-retardant polyamide resin composition as a material for molded articles and its molded articles. Background technique [0002] At present, polyolefins such as PP (polypropylene) are used in extruded products represented by pipes, sheets, and films. However, in order to improve the safety of buildings such as homes, warehouses, tents, and power plants, It is necessary to impart flame retardancy thereto. As a material for flame-retardant extrusion moldings, vinyl chloride is wide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G69/36C08K5/00C08K5/3492C08L77/00C08L77/06
CPCC08K5/0066C08L77/00C08L77/06C08G69/36C08L2666/20
Inventor 大山一角田守男渡部健
Owner MITSUBISHI ENG PLASTICS CORP
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