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Polyamide resin composition, and molded body and vehicle-mounted camera component comprising same

A technology of polyamide resin and composition, which is applied in the field of automotive camera parts and moldings, which can solve problems such as peeling, high crystallinity, and difficult adhesion, and achieve excellent reflow heat resistance and excellent adhesion

Pending Publication Date: 2021-04-02
UNITIKA LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the resin compositions of Patent Documents 1 and 2 have high crystallinity, parts made of the above resin compositions may not easily adhere to thermosetting adhesives such as epoxy resins commonly used in these fields. , When a component with poor adhesion is applied with force or impact, it may be peeled off from the target part to be bonded

Method used

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  • Polyamide resin composition, and molded body and vehicle-mounted camera component comprising same
  • Polyamide resin composition, and molded body and vehicle-mounted camera component comprising same
  • Polyamide resin composition, and molded body and vehicle-mounted camera component comprising same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0149] 80 parts by mass of a semi-aromatic polyamide (polyamide 10T) and 20 parts by mass of an amorphous polyamide (G850) were dry-blended to obtain a mixture.

[0150] The above-mentioned mixture was supplied to the main supply port of a co-direction twin-screw extruder (TEM37BS manufactured by Toshiba Machine Co., Ltd.) with a screw diameter of 37 mm and L / D40, and 100 parts by mass of a fibrous filler (4w10012) was supplied from a side feeder, Melt kneading is carried out. The barrel temperature is (melting point of polyamide 10T+10° C.), the screw rotation speed is 250 rpm, and the discharge rate is 35 kg / hour. After that, it was drawn into a strand shape, cooled and solidified in a water tank, and cut with a pelletizer to obtain polyamide resin composition pellets.

Embodiment 2～13、 comparative example 1～12

[0152] Except having changed the resin composition according to Table 2, 3, the same operation as Example 1 was performed, and the polyamide resin composition pellet was obtained.

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Abstract

Provided is a polyamide resin composition which has excellent mechanical properties, dimensional stability, reflow heat resistance under moisture absorption conditions, and excellent adhesiveness. This polyamide resin composition is characterized by containing (A) a semi-aromatic polyamide, (B) an amorphous polyamide, and (C) a fibrous filler, the mass ratio (A / B) of (A) to (B) being 90 / 10-70 / 30,the content of (C) being 40-100 parts by mass relative to the total of 100 parts by mass of (A) and (B). The saturated moisture absorption rate of the resion composition is 2.5 mass% or less when themoisture absorption treatment is performed for 168 hours at a temperature of 85 DEG C and a relative humidity of 85%.

Description

technical field [0001] The present invention relates to a polyamide resin composition, a molded body thereof, and an on-vehicle camera part. Background technique [0002] In recent years, in order to improve driving safety, vehicles are often equipped with on-board cameras. Among the constituent parts of vehicle-mounted cameras, resin materials are mainly used for camera housings and camera lens barrels. The camera case is a case member that accommodates the structural parts of the camera device, and the camera barrel is a holder member that holds a lens for the camera. In order to protect and maintain cameras and lenses, any part is required to have excellent mechanical properties and dimensional stability. In addition, any component is also required to have reflow resistance that does not cause dimensional changes or changes in appearance even when exposed to high temperature by soldering of electrical wiring by a reflow method under humid heat conditions. [0003] Pate...

Claims

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Application Information

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IPC IPC(8): C08L77/06C08L77/00C08K9/06C08K7/10C08K7/14C08K3/34
CPCC08L77/06C08L2201/08C08L2205/02C08L77/00C08K9/06C08K7/10C08K7/14C08K3/34
Inventor 西田敬亮上川泰生
Owner UNITIKA LTD