Abstract:
중합체 복합재 및 중합체 복합재를 제조하는 방법이 기술되어 있다. 한 구현예에서, 상변화 물질을 함유한 다수의 마이크로캡슐은 분산성 중합체 물질과 혼합되어 제 1 혼합물을 형성한다. 분산성 중합체 물질은 잠열이 40 J/g 이상이고 전이 온도가 0 ℃ 내지 50 ℃의 범위이다. 제 1 혼합물을 처리하여 중합체 복합재를 형성한다. 중합체 복합재는 펠렛, 섬유, 플레이크, 시트, 막, 로드 등과 같은 다양한 형상으로 형성될 수 있다. 중합체 복합재는 열 조절성이 목적되는 다양한 물품으로서 또는 상기 물품에 혼입될 수 있다.
Abstract:
PURPOSE: A polyoxymethylene resin composition is provided to have excellent mechanical strength and heat resistance, thereby reducing the physical property loss and crack generation of a molded product. CONSTITUTION: A polyoxymethylene resin composition comprises 100.0 parts by weight of a polyoxymethylene resin; 5-60 parts by weight; and 0.02-2 parts by weight of a porous organic inorganic hybrid silica compound. The porous organic inorganic hybrid silica compound is represented by chemical formula 1. In chemical formula 1, F has a structure represented by chemical formula 2: Al_2Si_2O_5 (OH)_x.M_y. In chemical formula 2, M is P, Ca, Zn, Fe, K, Mn, Mo, Ag, Mg, and Ti; X is an integer from 1-5; and y is an integer from 2-7.
Abstract:
PURPOSE: A polyoxymethylene resin composition is provided to improve conductivity, flexural elasticity, and impact strength while maintaining excellent dimensional stability and chemical resistance, thereby being used in components which are to be in contact with fuel in the engine part of a vehicle. CONSTITUTION: A polyoxymethylene resin composition comprises 100.0 parts by weight of a polyoxymethylene resin; 20-60 parts by weight of a thermoplastic resin; and 1-10 parts by weight of carbon nanotubes. The carbon nanotube is a multiwall carbon nanotube and has a crystallinity IG/ID of 0.8 or more measured by Raman spectrum. The purity of the carbon nanotube measured by TGA is 80-95 %, BET is 200-300 m^2/g, and the diameter is 10-30 nm, and the carbon nanotube is doped with a polyethylene glycol resin.
Abstract:
PURPOSE: An internal release agent is provided to improve releasing performance together with improving optical properties like lightness, moldability, dyeability, heat resistance, and transparency. CONSTITUTION: An internal release agent of a phosphate ester compound is comprised in a resin composition for optical lens by the amount of 0.001-10 weight%. The resin composition consists of 30.0-80.0 weight% of an epoxy acrylate main component in chemical formula 1, and 10.0-60.0 weight% of a reactive diluent of one or more kinds. In chemical formula 1, n is 0-15, R1 is H or Ch3, and R2 is H or Br. The phosphate ester compound is in chemical formula 2.
Abstract:
PURPOSE: A low-birefringent resin composition is provided to reduce the weight of extrudate, to be easily molded, and to easily manufacture a panel with low birefringency and high transmittance. CONSTITUTION: A low-birefringent resin composition comprises 100.0 parts by weight of a polymer blend and 2-10 parts by weight of a superplasticizer. The polymer blend comprises 80-90 weight% of a polycarbonate resin and 10-20 weight% of negative birefringent resin. The polycarbonate resin consists of bisphenol A. The polycarbonate resin is copolymerized with one or more of trimethyl-cycloheqd-bisphenol-A, 3,3,3',3'-tetramethyl-1, l-spiro-biindane and fluorene-bisphenol-A.
Abstract:
A skin patch that can enhance the water resistance and handling easiness and can alleviate any irritation on the user. There is provided a skin patch comprising a flexible support and, superimposed thereon, a plaster layer wherein the plaster layer contains a styrene-isoprene-styrene block copolymer and has a glass transition temperature (Tg) of -45 to -35°C and a tan H (lag angle) value, determined at dynamic viscoelasticity measurement (frequency 6.2832 rad/s) at 45°C, of 0.25 or less.