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Method for producing molded article

A technology for moldings and powders, applied in the field of molding moldings, can solve the problems of white turbidity, complicated operation, fluorine-based exudation, etc., and achieve the effects of preventing oozing and preventing the reduction of time-dependent properties.

Active Publication Date: 2018-11-09
DAIKIN IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In the conventional method of adding a fluorine-based release agent during molding, the added fluorine-based release agent may bleed out and cause problems such as white turbidity.
In addition, in the method of grafting the surface of the molded article after molding, there may be problems that unevenness is likely to occur on the surface and the operation is complicated.

Method used

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  • Method for producing molded article
  • Method for producing molded article
  • Method for producing molded article

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0339] The surface of pellets (2mm x 2mm x 5mm) of thermoplastic resin COP (cycloolefin polymer) as a resin material was irradiated with low-energy electron rays at a dose of 20 kGy in a nitrogen atmosphere using an electron beam irradiation device (irradiation conditions : Accelerating voltage 250kV, irradiation current 1mA, sample-irradiation window distance 15mm). Next, the pellets were taken out, placed in a container under nitrogen, and placed in C as a fluorine-containing graft compound 6 f 13 CH 2 CH 2 OCOCH=CH 2 It was immersed in the solution (preliminarily deoxidized) at an internal temperature of 60° C. for 4 hours. After impregnation, utilize acetone to clean, make it dry, obtain containing perfluoroalkyl (C 6 f 13 -) The graft chain molding material (raw material pellets).

[0340] Furthermore, the above-obtained pellets were heated and melted at 260° C., followed by film forming under a pressure of 0.0136 MPa to obtain a film with a thickness of 0.5 mm.

Embodiment 2～18

[0342] A molding material (raw material pellet) and a film were produced in the same manner as in Example 1, except that the resin material, the perfluoroalkyl group of the fluorine-containing graft compound, and the irradiation dose were changed to those shown in Table 1.

[0343] [Table 1]

[0344]

[0345]

[0346] *COP: cycloolefin polymer

[0347] PP: Polypropylene

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Abstract

The present invention provides a method for producing a molded article from a molding material, wherein the method is characterized in that the molding material has a fluorine-containing graft chain.

Description

technical field [0001] The present invention relates to a method for producing a molded body, and more specifically, to a method for producing a resin molded body from a molding material having a fluorine-containing graft chain. Background technique [0002] Resin molded articles are used in various fields such as medical parts, optical parts, construction parts, clothing, packaging, containers, molds, and the like. Various functions, such as water repellency and oil repellency, are added to such resin molded articles according to the application. [0003] In the prior art, as a method of imparting functions such as water repellency and oil repellency to a resin molded article, a method of segregating fluorine to the surface of the obtained molded article by adding a fluorine-based repellant during molding is known (Patent Document 1 ), or a method of grafting a fluorine-containing monomer after molding by irradiating the surface of the molded body with ionizing radiation t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J3/12C08F255/00C08J3/28
CPCC08J3/12C08J3/28C08J3/126C08F255/02C08F220/24C08F255/00C08F259/08
Inventor 佐藤数行薄谷光宏足达健二
Owner DAIKIN IND LTD