150 results about "Styrene ethylene butadiene styrene" patented technology

Internally lubricated polymer compositions containing a styrene- and / or polyphenylene ether-containing polymer, an olefin-containing polymer, and a compatibilizer are provided. The olefin-containing polymer, which is present in the compositions in about 3 to about 30 weight percent, provides internal lubrication and improves the tribological properties of the compositions compared with the styrene- or polyphenylene ether-containing polymer alone, as determined by wear measurements. Preferred compositions exhibit wear factors less than about 130×10−11n mm5 / Pa-m. A preferred composition includes a blend of polystyrene / polyphenylene ether, linear low density polyethylene, and styrene-ethylene-butadiene-styrene. Methods are also provided for improving tribological properties of styrene- and / or polyphenylene ether-containing base polymers by incorporating into the base polymers at least one olefin-containing polymer and at least one compatibilizer, or by incorporating at least one substantially halogen-free internal lubricant.

The invention relates to a thermoplastic elastomer composition of encapsulation PETG (poly(ethylene terephthalate) glycol) and a preparation method of the thermoplastic elastomer composition. The composition is prepared from the following raw materials in weight percentage: 15-35% of SEBS (styrene-ethylene-butadiene-styrene), 18-40% of a plasticizer, 30-45% of TPU (thermoplastic polyurethane), 5-10% of a compatilizer, 0.2-0.4% of an antioxidant, and 5-20% of an inorganic mineral. The preparation method comprises weighing raw materials proportionally by weight; mixing SEBS and the plasticizer in a high mixing machine for 20-30min, adding other raw materials, mixing, and taking out; and placing into a double screw extruder for extrusion granulation, wherein the rotation speed of the main machine of the screw is 200-350rpm, and the processing temperature is in the range of 180-220 DEG C. The thermoplastic elastomer composition of the invention has the following advantages: the polarity of SEBS is changed, resulting in chemical reaction of surfaces of the elastomer and the copolymer polyester and high bonding strength of secondary injection molding, and after stripping, a layer of the elastomer completely adheres on the surface of the PETG backing material, resulting in comfort handfeel and strong gripping strength; and the composition is a non-toxic and innocuous environment-friendly material for human and environment, and fully meets the requirements of high-end toothbrushes for PETG encapsulation.

The present invention relates to a Phase Change Material (PCM) composition comprising a) from 20 to 80 wt % of a PCM; and b) from 20 to 80 wt % of one or more polymers chosen from the group consisting of b1) Very Low Density Polyethylene (VLDPE) having a density equal or lower than 0.910 g / cm3 measured according to ASTM 792; b2) Ethylene Propylene Rubber (EPR) having a density equal or lower than 0.900 g / cm3 measured according to ASTM 792; b3) Styrene Ethylene Butadiene Styrene (SEBS) copolymers; and b4) Styrene Butadiene Styrene (SBS) copolymers. The PCM composition of the present invention can be used in applications where thermal management is needed, like for example in building, automotive, packaging, garments and footwear.

The invention belongs to the technical field of synthetic adhesives and particularly relates to a hot-melt pressure-sensitive adhesive and a preparation technology thereof. The hot-melt pressure-sensitive adhesive is prepared from raw materials in percentage by mass as follows: 1%-5% of a TPU (thermoplastic polyurethane) elastomer, 10%-15% of hydrogenated SEBS (styrene-ethylene-butadiene styrene), 45%-55% of tackifying resin, 25%-35% of a plasticizer, 0-1% of solid filler and 0-0.5% of an antioxidant. The TPU elastomer is added and blended with SEBS for modification, a framework structure is formed, components such as the tackifying resin, the plasticizer, the solid filler, the antioxidant and the like are added, the problem of damp-heat aging of the adhesive due to seasonal change is solved, the preparation technology of the adhesive is explored, the production cycle is shortened, and energy consumption is reduced.

The present invention relates to a Phase Change Material (PCM) composition comprising a) from 20 to 80 wt % of a PCM; and b) from 20 to 80 wt % of one or more polymers chosen from the group consisting of b1) Very Low Density Polyethylene (VLDPE) having a density equal or lower than 0.910 g / cm3 measured according to ASTM 792; b2) Ethylene Propylene Rubber (EPR) having a density equal or lower than 0.900 g / cm3 measured according to ASTM 792; b3) Styrene Ethylene Butadiene Styrene (SEBS) copolymers; and b4) Styrene Butadiene Styrene (SBS) copolymers. The PCM composition of the present invention can be used in applications where thermal management is needed, like for example in building, automotive, packaging, garments and footwear.

The invention provides a thermoplastic elastomer material for refrigerator sealing strip and a preparation method thereof. The thermoplastic elastomer material for the refrigerator sealing strip comprises the following components in parts by weight: 20-40 parts of SEBS (Styrene-Ethylene-Butadiene-Styrene), 20-45 parts of mineral oil, 20-50 parts of polyethylene, 5-20 parts of a mineral filler, 10-30 parts of a polyolefin alloy thermoplastic elastomer, 0.5-2 parts of an ultraviolet absorber and 0.5-2 parts of a mildew preventive. The thermoplastic elastomer material for the refrigerator sealing strip has the advantages of low density, environment friendliness, surface smoothness, soft handfeel, simple processing technic, high welding performance, flexible product design, excellent cold resistance, excellent heat resistance, higher size accuracy and higher surface fineness, and is more suitable for extruded profiled bars and refrigerator sealing strip products with air blowing requirements.

The invention discloses a halogen-free flame retardant high-tear-resistance wire and cable compound for electric vehicles. The wire and cable compound comprises the following components in parts by weight: 100 parts of styrene-ethylene / butadiene-styrene block copolymer (SEBS), 20-60 parts of polypropylene, 5-20 parts of alkene polymer, 0.3-3 parts of antioxidant, 40-90 parts of halogen-free flame retardant, 20-60 parts of charring agent, 0.5-3 parts of processing aids and 15-80 parts of softening and plasticizing agent. The invention also discloses a production method for preparing wires and cables with the wire and cable compound. Through radiation micro-crosslinking, the wire and cable products prepared with the cable compound have excellent tear resistance, higher physical and mechanical properties and good electric insulation property, achieve excellent flame retardance under the premise of satisfying environmental protection, also have the advantage of high production efficiency and can be widely applied to the field of new energy, such as cables used for electric vehicles.

A polymeric film and method for making the film. Mixing a structural material with a secondary material to form a unitary mixture prior to processing forms the film. For a printable film, the secondary material is a printable material. The unitary mixture is extruded and heated so as to cause the printable material to bloom to the surface of the mixture. The result is a film that is stiffer and that lays flatter than prior multi-layered films that were prone to curling. The rollers used to stretch the film during this heat-setting stage are preferably very smooth so as to enhance the transverse-direction strength and stiffness of the film. In another embodiment of the invention, the secondary material is a clarity-enhancing material that may be styrene-ethylene-butadiene-styrene block copolymer. The blend combination is a suitable replacement for polyvinyl chloride films in that it is soft, conformable, flexible and clear.

The invention relates to a wear-resistant halogen-free flame-retardant elastic material for a high-speed elevator flat cable and a preparation method thereof. The wear-resistant halogen-free flame-retardant elastic material disclosed by the invention contains the following raw material ingredients in parts by weight: 40-60 parts of EPDM (Ethylene-Propylene-Diene Monomer), 10-20 parts of compatibilizer, 10-35 parts of functional elastomer, 5-25 parts of melt softener, 60-100 parts of flame retardant, 2-5 parts of flame-retardant and wear-resistant synergist, 0.5-2 parts of antioxidant and 0.5-3.5 parts of lubricant. According to the wear-resistant halogen-free flame-retardant elastic material disclosed by the invention, the functional elastomer is a mixture of TPU (Thermoplastic Polyurethane) and SEBS (Styrene-Ethylene-Butadiene-Styrene block copolymer), the physical and mechanical properties, heat resistance and wear resistance of the product can be improved due to the mixture, and the final performance of the product fully meets the requirements of materials for the high-speed elevator flat cable, so that the product can replace the existing PVC (Polyvinyl Chloride) flat cable elastic materials and is halogen-free and environmental-friendly. The preparation method disclosed by the invention is simple in process, easy in operation and low in cost.

The invention discloses a door and window edge banding material based on thermoplastic elastomer SEBS (styrene-ethylene-butadiene-styrene copolymer), and the door and window edge banding material comprises the following components: SEBS rubber resin, a softening plasticizer, a polyolefin elastomer, ethylene-propylene-diene monomer, polypropylene resin, a vulcanizing agent system, an antioxidant, a light stabilizer and a processing aid. The invention also discloses a preparation method of the door and window edge banding material. The door and window edge banding material based on the thermoplastic elastomer SEBS has the advantages of being halogen-free, high temperature and low compression deformation resistant, weather-proof, low temperature resistant, excellent in mechanical properties, easy to extrude to form, long in service life and the like. Door and window edge banding material products based on the thermoplastic elastomer SEBS can be quickly prepared by the preparation method, the products can be widely used in high-grade building door and window edge bandings, automobile door and window edge bandings and other fields, and the process steps are simple, and easy to implement.