摘要:
The invention refers to a method for producing expanded polymer pellets, which comprises the following steps: melting a polymer comprising a polyamide; adding at least one blowing agent; expanding the melt through at least one die for producing an expanded polymer; and pelletizing the expanded polymer. The invention further concerns polymer pellets produced with the method as well as their use, e.g. for the production of cushioning elements for sports apparel, such as for producing soles or parts of soles of sports shoes. A further aspect of the invention concerns a method for the manufacture of molded components, comprising loading pellets of an expanded to polymer material into a mold, and connecting the pellets by providing heat energy, wherein the expanded polymer material of the pellets or beads comprises a chain extender. The molded components may be used in broad ranges of application.
摘要:
The use of long-chain citric acid esters as additives in aqueous polymer dispersions for production of porous polymer coatings, preferably for production of porous polyurethane coatings, is described.
摘要:
Amine groups can be introduced in porous materials by a direct (one pot) or post-synthetic modification (PSM) process on aldehyde groups, and the resulting porous materials have increased gas affinity.
摘要:
A flame retardant polymeric foam material and its manufacturing method are provided. The flame retardant polymeric foam material comprises a polymeric foam, and an organic flame retardant coating on the surface of the polymeric foam which is obtained by spraying, coating or by impregnating after the organic flame retardant melts. The present invention selects those types of flame retardants which are very effective in improving the flame retardancy of the polymeric foams; especially those effective for extruded polystyrene foams, and provides a simple and feasible approach to obtain polymeric foams with excellent flame retardant property. The methods can effectively increase the amount of the flame retardants added without affecting foaminess of the foam products and reducing strength or insulation properties of polymeric foams. Different flame retardancy requirements can be satisfied by simply varying the amount of the flame retardants coated on the polymeric foam surface.
摘要:
The present invention provides a heat dissipating member having excellent heat dissipation properties and suitable for use in an oil environment. The present invention is a heat dissipating member including: a porous base material containing a fluorine resin and a thermally-conductive filler; and an oil contained in pores of the porous base material. The fluorine resin contains polytetrafluoroethylene. The heat dissipating member can be produced, for example, by a method including the steps of: (1) stacking and rolling together a plurality of sheet-shaped formed bodies each containing a polytetrafluoroethylene-containing fluorine resin, a thermally-conductive filler, and a molding aid, so as to obtain a rolled laminated sheet; (2) removing the molding aid from the obtained rolled laminated sheet to obtain a porous base material; and (3) impregnating the obtained porous base material with an oil.
摘要:
Expanded composite polystyrene-based resin particles having a plurality of cells and cell membranes separating the plurality of cells, said cell membranes including a polystyrene-based resin forming a continuous phase and polyacrylic acid alkyl ester-based resin fine particles dispersed in said continuous phase to form a dispersed phase, and said polystyrene-based resin being complexed with said polyacrylic acid alkyl ester-based resin fine particles, wherein said dispersed phase is present in the form of a plurality of layers in a cell membrane thickness direction in a cell membrane cross-section of said expanded composite polystyrene-based resin particles.
摘要:
The invention relates to a various methods of adding a liquid additive to a foam whereby the location of the additive within the foam can be precisely controlled. It also describes embodiments of a foam wherein the additive has been localized at particular areas of the foam.
摘要:
The invention relates to a coating composition comprisinga) from 20 to 70% by weight, in particular from 30 to 50% by weight, of a clay mineral, b) from 20 to 70% by weight, in particular from 30 to 50% by weight, of an alkali metal silicate, c) from 1 to 30% by weight, in particular from 5 to 20% by weight, of a film-forming polymer, and also to a process for producing coated foam particles and foam moldings produced therefrom and their use.
摘要:
Disclosed herein is an expandable polystyrene bead having improved adiabaticity and flame-retardance and a method of producing the expandable polystyrene bead. The expandable polystyrene bead comprises 10 to 60 wt % of a flame retardant which is made of one or more selected from among metal or nonmetal oxides, metal or nonmetal hydroxides, silicates, borates and carbonates, having a particle size of 150 μm. Expanded polystyrene foam having improved adiabaticity and flame-retardance can be obtained using the expandable polystyrene bead. A thin flame-retardant thermal insulator including the expanded polystyrene foam can be widely used in various fire-related fields.