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Waterproof component, electronic equipment comprising same, waterproofing method using insert-molded body, and waterproofing method for electronic equipment

A technology for electronic equipment and moldings, applied in the field of waterproof parts, which can solve the problems of finished parts, elastic body production costs, and difficulties in miniaturization

Pending Publication Date: 2021-10-01
KURARAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are problems such as the inability to complete the part in one process due to mounting of the elastic body, difficulty in miniaturization, costs incurred by the elastic body itself and its mounting process

Method used

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  • Waterproof component, electronic equipment comprising same, waterproofing method using insert-molded body, and waterproofing method for electronic equipment
  • Waterproof component, electronic equipment comprising same, waterproofing method using insert-molded body, and waterproofing method for electronic equipment
  • Waterproof component, electronic equipment comprising same, waterproofing method using insert-molded body, and waterproofing method for electronic equipment

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Experimental program
Comparison scheme
Effect test

Embodiment 1～6 and comparative example 1～3

[0145] Through the most upstream hopper, the thermoplastic resin (A) shown in Table 1 and other components were supplied to a twin-screw extruder (screw diameter: 32 mm, L / D = 30, rotation speed: 150 rpm, In a discharge rate of 10 kg / h), the inorganic filler (B) shown in Table 1 was further supplied from a side feeder, and melt-kneaded. The melt-kneaded thermoplastic resin composition was extruded into a strand, cooled and then cut to obtain pellets of the thermoplastic resin composition. It should be noted that the amounts of the thermoplastic resin (A), the inorganic filler (B) and other components in Table 1 all mean "parts by mass".

[0146] Using these pellets, evaluation as a molded product (insert molded product) was performed by the following method.

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Abstract

Provided is a waterproof component that is an insert-molded body comprising a thermoplastic resin composition and a metal component, wherein the thermoplastic resin composition includes a thermoplastic resin (A) and an inorganic filler (B), the content of the inorganic filler (B) is 8-130 parts by mass relative to 100 parts by mass of the thermoplastic resin (A), the inorganic filler (B) is a spherical inorganic filler (B1) and / or a platy inorganic filler (B2), the spherical inorganic filler (B1) has an average particle size of 2-200 mum, inclusive, and the platy inorganic filler (B2) has an average particle size of 2-200 mum, inclusive, and an average aspect ratio of 10-200, inclusive. Also provided is electronic equipment comprising the waterproof component.

Description

technical field [0001] The present invention relates to a waterproof member, an electronic device including the waterproof member, a waterproof method using an insert molded body, a waterproof method for an electronic device, and the like. Background technique [0002] In recent years, electronic devices such as smartphones are increasingly required to be waterproof. External connection terminals of such electronic devices are typically composites of resin or resin composition and metal parts, and metal parts are often exposed to the outside, and waterproofing of the bonding surface between resin or resin composition and metal is a problem. At the same time, as a method of manufacturing printed circuit boards to which electronic components are bonded, lead-free solder paste is printed on printed circuit boards, electronic components are mounted on the printed circuit boards, and then heated in a reflow furnace at about 260°C where lead-free solder melts. The use of surface ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L25/06C08L77/00C08L81/02C08L101/00C08K3/013C08K3/34C08K3/36C08K3/40
CPCC08K3/34C08L81/02C08K2201/003C08K2201/016C08K7/00C08K7/20B29C45/14B29C45/0001C08L77/06C08K3/36C08K3/40C08L2203/20
Inventor 菅井直人重松宇治伊藤悠规
Owner KURARAY CO LTD
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