Polybutylene terephthalate resin composition

A technology of polybutylene terephthalate and resin composition, applied in the field of polybutylene terephthalate resin composition, can solve problems such as surface appearance deterioration, and achieve excellent alkali resistance, high resistance The effect of thermal shock resistance and high alkali resistance

Active Publication Date: 2021-03-09
MITSUBISHI ENG PLASTICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it cannot be said that the resin composition can provide a sufficiently satisfactory level of alkali resistance, thermal shock resistance, laser weldability, or two-color formability, and it is easy to Deterioration of surface appearance occurs

Method used

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  • Polybutylene terephthalate resin composition
  • Polybutylene terephthalate resin composition
  • Polybutylene terephthalate resin composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1 to 4 and comparative example 1 to 3

[0184]

[0185] The components described in Table 1 except glass fibers were blended in the proportions (parts by mass in all cases) given in Table 2 below and used a curved 30 mm twin-screw extruder (TEX30α twin-screw extruder , from Japan Steel Works, Ltd.), and glass fibers supplied from a side feeder, were melt-kneaded at a barrel temperature of 270°C. After extrusion in the form of strands, pelletization was performed using a strand cutter to obtain pellets of the polybutylene terephthalate resin composition.

[0186]

[0187] Various physical properties and performances in Examples and Comparative Examples were measured and evaluated using the following methods.

[0188] (a) Charpy impact strength (unit: kJ / m 2 ):

[0189] The obtained pellets were dried at 120° C. for 6 hours, and then made using the “NEX80-9E” injection molding machine from Nissei Plastic Industrial Co., Ltd. and using the conditions of a barrel temperature of 250° C. and a mold temperature of 80...

Embodiment 21 to 24 and comparative example 21

[0216]

[0217] The components described in Table 1 except glass fibers were blended in the ratios given in Table 3 below (all substances are parts by mass) and a curved 30 mm twin-screw extruder (TEX30α twin-screw extruder, Japan SteelWorks, Ltd.), and glass fibers supplied from a side feeder, were melt-kneaded at a barrel temperature of 270°C. After extrusion in the form of strands, pelletization was performed using a strand cutter to obtain pellets of the polybutylene terephthalate resin composition.

[0218]

[0219] The measurement and evaluation were performed as described above while measuring the laser welding strength using the following method.

[0220] (e) Laser welding strength (unit: N)

[0221] In order to measure the laser welding strength, make as Figure 4 A cylindrical absorbing side member 7 and a disk-like transmitting side member 8 are shown; these are laminated on each other, and laser welded to obtain a laser welded body; and the weld strength ther...

Embodiment 21 to 23 and comparative example 21 and 22

[0240]

[0241] The components described in Table 1 except glass fibers were blended in the ratios given in Table 4 below (all substances are parts by mass) and a curved 30 mm twin-screw extruder (TEX30α twin-screw extruder , from Japan Steel Works, Ltd.), and glass fibers supplied from a side feeder, were melt-kneaded at a barrel temperature of 270°C. After extrusion in the form of strands, pelletization was performed using a strand cutter to obtain pellets of the polybutylene terephthalate resin composition.

[0242]

[0243] The measurement and evaluation were performed as described above while measuring the bonding strength using the following method.

[0244] (f) Joint strength (unit: N)

[0245] Production of two-color formed test pieces for measuring joint strength:

[0246]ISO-1A contact type two-color molding test pieces were molded using an injection molding machine from Japan Steel Works, Ltd., namely, "J180AD-2M (clamping force 180t, screw diameter barrel A=4...

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Abstract

A polybutylene terephthalate resin composition is characterized by containing (B) 0-30 parts by mass of an elastomer, (C) 0.3-4 parts by mass of an epoxy compound, (D) 15-80 parts by mass of a reinforcing filler, and (E) 1-15 parts by mass of a master batch including a thermoplastic resin and a silicone compound having a weight-average molecular weight of 10000-80000, with respect to (A) 100 partsby mass of a thermoplastic resin including polybutylene terephthalate resin.

Description

technical field [0001] The present invention relates to a polybutylene terephthalate resin composition, and more specifically relates to exhibiting excellent impact resistance, excellent resistance in an alkaline environment (hereinafter also referred to as "alkali resistance"), excellent Polybutylene terephthalate resin composition having thermal shock resistance, excellent laser weldability, and excellent two-color formability, and further relating to production of the polybutylene terephthalate resin composition A method, and relates to a metal-resin composite body, a molded body for laser welding, a laser welded body, and a two-color molded body. Background technique [0002] Polybutylene terephthalate resins are excellent in easiness of processing, mechanical properties, heat resistance, and others, that is, physical properties and chemical characteristics, and as a result are widely used in, for example, parts for automobiles, electric and electronic devices In the fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02B32B15/08B32B27/36C08J5/04C08J5/18C08L21/00C08L23/08C08L63/00C08L83/04
CPCC08L21/00C08L67/02C08L83/04B32B2307/308B32B15/095B32B15/08B32B2307/3065B32B27/34B32B2262/103B32B2439/70B32B27/28B32B2274/00B32B2262/10B32B27/285B32B15/082B32B2262/02B32B27/38B32B2264/10B32B27/32B32B2270/00B32B15/18B32B27/40B32B27/22B32B2439/00B32B2264/101B32B27/365B32B2264/108B32B27/327B32B5/08B32B2262/101B32B15/085B32B2307/306B32B27/20B32B27/306B32B15/092B32B2509/00B32B2262/106B32B2307/714B32B27/286B32B27/302B32B2262/0269B32B27/42B32B15/088B32B2307/7244B32B2264/105B32B27/281B32B2264/104B32B2307/558B32B2457/00B32B27/36B32B2605/00B32B2264/107B32B15/20B32B2307/4026B32B2264/102B32B15/09C08J3/226C08J5/043C08J2367/02C08J2483/04C08J2323/08C08J3/203C08J2423/08C08G77/04C08L2205/035C08K7/14C08L33/04C08L63/04C08L69/00C08L23/0869C08L63/00C08L2205/025
Inventor 山中康史庄司英和竹内莉奈
Owner MITSUBISHI ENG PLASTICS CORP
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