Hyundai Motor Company

Kia Corporation

Lotte Chemical Corporation

Gs Caltex Corporation

Dae Ha Co., Ltd.

Hanwha Totalenergies Petrochemical Co., Ltd.

Hdc Hyundai Engineering Plastics Co., Ltd.

Sun Jun Kwon

Dong Eun Cha

Chun Ho Park

Hee Joon Lee

Seung Ryong Jeong

Jin Young Yoon

Eun Hwa Jang

Tae Kyung Lee

Hyung Tak Lee

Kwan Suk Ryu

Jeong Gil Ko

Seok Jin Yong

Kyung Hwan Lim

Jin Bo Chae

Yoon Hwan Lee

The present disclosure provides a thermoplastic resin composition having high rigidity and a low coefficient of linear thermal expansion and a molded article including the same. The thermoplastic resin composition includes a first propylene-ethylene copolymer, a second propylene-ethylene copolymer, a thermoplastic elastomer, an inorganic filler, and a sodium-phosphate-based nucleating agent as appropriate, and thus a molded article produced therefrom can exhibit improved mechanical rigidity, impact resistance, and dimensional stability. Even when formed to a low thickness for weight reduction, the molded article can be imparted with excellent processability, high tensile strength, a high flexural modulus, and high impact strength.

Thermoplastic resin composition having high rigidity and low coefficient of linear thermal expansion and molded article comprising same

The present disclosure provides a thermoplastic resin composition having high rigidity and a low coefficient of linear thermal expansion and a molded article including the same. Specifically, the thermoplastic resin composition includes a base resin including at least two polypropylene-based resins having different melt indexes, an elastomer having a melt index (190° C., 2.16 kg) of 20 g/10 min to 35 g/10 min as measured by ASTM D1238, and inorganic particles, and has a flexural modulus (FM) of 2,500 MPa or more and a coefficient of linear thermal expansion (CLTE) of 60 μm/m° C. or less.

The present disclosure provides a thermoplastic resin composition having high rigidity and a low coefficient of linear thermal expansion and a molded article including the same. Specifically, the thermoplastic resin composition includes a polypropylene-based resin having an isotactic pentad fraction of 96% or more as measured byC-NMR, a thermoplastic elastomer, an inorganic filler having an average particle diameter of 0.1 μm to 5 μm, and a compatibilizer, and has a flexural modulus of 2,500 MPa or more and a coefficient of linear thermal expansion of 60 μm/m·° C. or less.

Polyolefin resin composition having high rigidity and low coefficient of linear thermal expansion and weight-reduced automobile part comprising same

The present disclosure provides a thermoplastic resin composition having high rigidity and a low coefficient of linear thermal expansion and a molded article including the same. Specifically, the thermoplastic resin composition includes a polypropylene composite resin including high-crystalline polypropylene and the like, an elastomer, and an inorganic filler.

The present disclosure provides a thermoplastic resin composition having high rigidity and a low coefficient of linear thermal expansion and a molded article including the same. Specifically, the thermoplastic resin composition includes a first polypropylene resin having crystallinity of 50% to 80%, a second polypropylene resin having a coefficient of linear thermal expansion of 70 &#x3bc;m/m&#xb7;&#xb0; C. to 90 &#x3bc;m/m&#xb7;&#xb0; C., an elastomer, and an inorganic filler.

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Seoul, South Korea

Sun Jun Kwon