POLYMER BLEND FOR THERMOPLASTIC CELLULAR MATERIALS, CAPABLE OF IMPROVING MECHANICAL PROPERTIES

PURPOSE: A polymer blend for thermoplastic cellular materials is provided to show better mechanical properties than cellular materials made of pure homopolymer or copolymer and to ensure heat resistance and high rigidity. CONSTITUTION: A polymer blend for thermoplastic cellular materials represents a lower density foaming material. The lower density foaming material has an extrusion sheet or a board shape. The density of the lower density foaming material is 200 kg/m^3 or less. The thermal conductivity of the lower density foaming material is 0.028~0.038 W/m.K. The lower density foaming material is made of PET/PC mixture. The PET/PC mixture contains 80-98wt% of high density PET and PC. The content of PC is 2-20wt%, more preferably, 2-5wt%. The average molecular weight of PC is 4000g/mole or greater. The lower density foaming material shows resistance against high temperature and rigid and flexible properties. The lower density foaming material contains a physical foaming agent. © KIPO 2009 ...

POLYESTER FOAM MATERIAL CONTAINING FUSIBLE ZINC PHOSPHINATE AS A HALOGEN FREE FLAME RETARDANT

PURPOSE: A polyester foam material is provided to ensure uniform and fine foam structure by adding fusible zinc phosphinate as a halogen free flame retardant. CONSTITUTION: A polyester foam material is an obtained by a reactive extrusion foaming of polyester resins. The polyester foam has a total heat release(THR600s) less than 6.0 MJ, a fire growth rate(FIGRA) less than 430.0 W/s, a total smoke production(TSP600s) less than 165.0 MJ and no flaming droplets/particles within 600s, wherein all parameters thereof are tested according to prEN 13823. COPYRIGHT KIPO 2011 ...

Preparation and Application of Chain-Extending Concentrates for Polyester Foaming Process

Polymer Blend for Thermoplastic Cellular Materials

Polyster Foam Material having Flame-Resistant Behaviour

MANUFACTURING METHOD OF A CHAIN-EXTENDING CONDENSATE FOR A POLYESTER FOAMING PROCESS, AND AN APPLICATION METHOD OF THE CONDENSATE

PURPOSE: A manufacturing method of a chain-extending condensate, and an application method of the condensate are provided to use the condensate for manufacturing a foamable material of aromatic polyester and polyester blends. CONSTITUTION: A chain-extending condensate capable of using as a chain extender/branching agent contains an ethylene-acrylate copolymer, a high-temperature thermoplastic resin, and a polyfunctional compound. The polyfunctional compound is selected from the group consisting of tetracarboxylic dianhydride, polyepoxide, oxazoline, oxazine, acylactam, an anti-oxidizer including a sterically hindered phenolic end group, and their compound. COPYRIGHT KIPO 2011 ...