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Polyamide resin foam-molded article and method for producing polyamide resin foam-molded article

A foamed molding, polyamide-based technology, applied in the field of polyamide-based resin foamed moldings, to achieve the effect of excellent heat resistance and sound insulation

Active Publication Date: 2017-10-13
ASAHI KASEI KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] So far, there has been no example of producing a polyamide-based resin foam molded article by the bead foam molding method, and there is no example of presumably industrial production

Method used

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  • Polyamide resin foam-molded article and method for producing polyamide resin foam-molded article
  • Polyamide resin foam-molded article and method for producing polyamide resin foam-molded article
  • Polyamide resin foam-molded article and method for producing polyamide resin foam-molded article

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0170] Using an extruder, 100 parts by mass of nylon 6 (trade name: UBENylon1022B, manufactured by Ube Industries, Ltd.) as a polyamide-based resin and 0.8 parts by mass of talc as a nucleating agent were melt-kneaded under heating conditions, After that, it is extruded in a strand form, water-cooled in a cold water tank, and cut to produce a pellet-shaped base resin.

[0171] The base resin was made to contain carbon dioxide gas as a foaming agent in accordance with the method described in the Examples of JP-A-2011-105879. And, the base resin containing carbon dioxide gas is heated, thereby foaming occurs, and a density of 300kg / m is obtained. 3 pre-expanded particles.

[0172] The obtained pre-expanded particles were enclosed in an autoclave, and compressed air was introduced for 1 hour until the pressure in the autoclave reached 0.5 MPa, and then the pressure was kept at 0.5 MPa for 24 hours, thereby pressurizing the pre-expanded particles deal with.

[0173] Fill the pr...

Embodiment 2

[0178] Obtain density 300kg / m similarly with embodiment 1 3 After the pre-expanded particles, set the following conditions in the pressure treatment: the obtained pre-expanded particles are sealed in an autoclave, and compressed air is introduced for 1 hour until the pressure in the autoclave reaches 0.3MPa, and then the The pressure was maintained at 0.3 MPa for 24 hours. And, before putting the pre-expanded particles after the pressure treatment into the mold, they were further heated at 230° C., thereby further foaming occurred, and the density was 150 kg / m 3 . Except for this point and the above conditions, it carried out similarly to Example 1, and obtained the foam molding.

[0179] Table 1 shows the evaluation results of the polyamide-based resin foam molded article of Example 2.

Embodiment 3

[0181] Obtain density 150kg / m similarly with embodiment 2 3After the pre-expanded particles, the following conditions are set: the obtained pre-expanded particles are sealed in an autoclave, and compressed air is introduced for 1 hour until the pressure in the autoclave reaches 0.15MPa, and then the pressure is maintained at 0.15MPa 24 hours. And, before putting the pre-expanded particles after the pressure treatment into the mold, they were further heated at 230° C., thereby further foaming occurred, and the density was 50 kg / m 3 . Except for this point and the above conditions, it carried out similarly to Example 1, and obtained the foam molding.

[0182] Table 1 shows the evaluation results of the polyamide-based resin foam molded article of Example 3.

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Abstract

A polyamide resin foam-molded article characterized by containing polyamide resin and having a degree of crystallization X of 10-50% and a crystallite size D of 10 nm or greater when calculated on the basis of the peak having the smallest peak width in the x-ray diffraction profile, and a method for producing the same.

Description

technical field [0001] The present invention relates to a polyamide resin foam molding and a method for producing a polyamide resin foam molding. Background technique [0002] Compared with metals, etc., plastics are light in weight, so they are used in electronic equipment, miscellaneous goods, automotive components, etc., and their applications are expanding. In addition, from the viewpoint of energy saving and the like, plastic members are required to have excellent physical properties such as light weight, strength, and impact resistance. As a technique for meeting this requirement, a technique for producing a resin foam molded article is known. [0003] Conventionally, general-purpose resins such as polyethylene, polystyrene, and polypropylene, which are excellent in light weight and impact resistance, have been used as plastics, and foamed molded products of these general-purpose resins are suitable for cushioning materials and the like. [0004] However, since these...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/232
CPCC08J2377/04C08J9/232C08J9/122C08J9/18C08J2203/06C08J2205/052C08J2377/02
Inventor 近藤始基藤野能宜
Owner ASAHI KASEI KK
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