Resin composition for laser welding, and welded body of same

一种树脂组合物、激光熔接的技术，应用在激光焊接设备、焊接设备、制造工具等方向，能够解决未记载聚酯树脂组合物、无法提供熔接性等问题，达到有利激光熔接加工性、优异黑色着色力、优异黑色着色的效果

Active Publication Date: 2018-10-23
MITSUBISHI CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, these methods cannot provide satisfactory weldability due to, for example, gaps between welded members generated by warping deformation of molded articles, etc.
[0009] A method in which weldability is improved by adding a laser transmission absorber such as nigrosine to a thermoplastic resin has also been proposed (Patent Document 5); however, there is no description of a polyester resin composition suitable for laser welding

Method used

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  • Resin composition for laser welding, and welded body of same
  • Resin composition for laser welding, and welded body of same
  • Resin composition for laser welding, and welded body of same

Examples

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Embodiment

[0239] The present invention is described more specifically using the following examples, but the present invention is certainly not limited to these examples.

[0240] Production Examples 1 to 9 and Comparative Production Examples 1 to 3 outside the scope of application of the present invention are given below for the colorants, while their compositional ratios are given in Table 1.

[0241] (Production Example 1: Production of Colorant Example 1)

[0242] 0.66 parts by mass of anthraquinone dye 1 (maximum absorption wavelength=628nm, C.I. solvent blue 104), 0.58 parts by mass of perionone dye 1 (maximum absorption wavelength=472nm, C.I. solvent red 179), and 0.56 parts by mass of anthracene Quinone dye 3 (maximum absorption wavelength=446 nm, C.I. Solvent Yellow 163) was introduced into the mixer and stirred for 5 hours, thereby obtaining 1.8 parts by mass of Colorant Example 1.

[0243] The absorbance and maximum absorption wavelength of the dyes used in the foregoing were...

Embodiment A1

[0263] Production of molded product example 1

[0264] The following were introduced into a stainless steel drum and stirred and mixed for 1 hour: 50 parts by mass of polybutylene terephthalate homopolymer (A1) (NOVADURAN 5008), 50 parts by mass of polybutylene terephthalate Ester copolymer (A2a) (NOVADURAN 5605), 0.4 parts by mass of phenolic stabilizer (stabilizer 2, ADK STAB AO-60), 0.7 parts by mass of release agent (UNISTER H476), 0.014 parts by mass of nigrosine ( NUBIAN BLACK TH-807), and 0.386 parts by mass of Colorant Example 1. The resulting mixture was introduced into the main hopper of a 30-mm vented twin-screw extruder (“TEX30α”, The Japan SteelWorks, Ltd.); 43 parts by mass of glass fiber (GF) (T-187) was fed from the seventh Side feeder supply; extruding with kneading under the conditions that the set temperature C1-C15 of the extruder barrel is 260°C, the die head is 250°C, the screw rotation speed is 200rpm, and the discharge amount is 40kg / hour into strand ...

Embodiment A2

[0294] Production of molded product example 2

[0295] The following were introduced into a stainless steel drum and stirred and mixed for 1 hour: 60 parts by mass of polybutylene terephthalate homopolymer (A1), 40 parts by mass of polyethylene terephthalate resin (A2b ) (NOVAPET PBK1), 0.4 parts by mass of phenolic stabilizer (stabilizer 2), 0.7 parts by mass of release agent, 0.014 parts by mass of nigrosine (NUBIANBLACK TH-807), and 0.386 parts by mass of coloring agent Example 1 . The resulting mixture was introduced into the main hopper of a 30-mm vented twin-screw extruder (“TEX30α”, The Japan Steel Works, Ltd.); 43 parts by mass of glass fibers (GF) were fed from the 7th side feeder of the hopper Supply; Extrude into a strand form with kneading under the conditions that the set temperature C1-C15 of the barrel of the extruder is 260°C, the die head is 250°C, the screw rotation speed is 200rpm, and the discharge amount is 40kg / hour. and producing pellets of the resin...

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Abstract

This resin composition for welding using a laser beam is characterized by containing: (A) a thermoplastic polyester resin material containing a polybutylene terephthalate homopolymer and at least oneof a polybutylene terephthalate copolymer, a polyethylene terephthalate resin, and a polycarbonate resin; and, relative to 100 parts by mass of the thermoplastic polyester resin material, (B) 0.0005-0.5 parts by mass of nigrosine, and (C) 0.01-2 parts by mass of a colorant containing an anthraquinone dye C1 having a maximum absorption wavelength in the range of 590-635 nm, a perinone dye C2 havinga maximum absorption wavelength in the range of 460-480 nm, and an anthraquinone dye C3 having a maximum absorption wavelength in the range of 435-455 nm, in a proportion of C1:C2:C3=24-41:24-39:22-46 relative to a total of 100 parts by mass of C1, C2, and C3.

Description

technical field [0001] The present invention relates to a resin composition for laser welding and a welded body, and is excellent in black coloring power, has excellent heat discoloration resistance, and excellent laser welding processability (laser welding processability), and is obtained by combining resins for laser welding The polyester-based resin composition for laser welding with high weld strength is provided to provide a welded body obtained by laser welding a molded article obtained from the product. Background technique [0002] Thermoplastic polyester resins show excellent mechanical strength, chemical resistance, and electrical insulation, etc., and also have excellent heat resistance, formability, and recyclability, as a result, they are widely used in various equipment and instrument parts . [0003] In recent years, particularly, lightweighting of automobile parts has been progressing, and a high level of heat resistance is generally required due to the conv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/00C08J5/00C08K5/08C08K5/29C08K5/3462
CPCC08J5/00C08K5/08C08K5/29C08K5/3462C08L67/00B29C65/1616B29C65/1632B29C65/1635B29C65/1658B29C65/1677B29C65/7826B29C65/8215B29C66/1122B29C66/1142B29C66/43B29C66/71B29C66/733B29C66/73321B29C66/8122B29C66/81267B29C66/8322B29C66/919B29C66/929B29C66/939B29C66/9592B29K2067/006B29K2067/003B29K2069/00B29K2909/08B29K2067/00B23K26/21C08L67/02C08L2207/04
Inventor 山中康史吉田真树子
Owner MITSUBISHI CHEM CORP
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