摘要:
A polymer-modified asphalt composition comprises or is produced from asphalt and a high-melt flow index ethylene co/terpolymer comprising copolymerized units derived from ethylene, an epoxy-containing comonomers, and optionally a third monomer selected from the group consisting of acrylates, methacrylates, vinyl esters, and the like. The modified asphalt composition may further comprise a nonreactive polymer, such as a styrene/conjugated-diene block copolymer, and a co-reactant, such as an acid or an acid anhydride. Further provided are processes for producing the polymer modified asphalt composition, and paving and roofing materials that comprise the polymer-modified asphalt composition.
摘要:
A color-changing polymeric material is provided. The material is formed from a thermoplastic composition containing a continuous phase that includes a matrix polymer, colorant, microinclusion additive, and nanoinclusion additive, wherein the microinclusion additive and nanoinclusion additive are dispersed within the continuous phase in the form of discrete domains. A porous network is formed in the polymeric material when subjected to a deformational strain in a solid state. The polymeric material exhibits a first color prior to being subjected to the deformational strain and a second color after being subjected to the deformational strain, the first color being different than the second color.
摘要:
A polymer composition that is capable of exhibiting a unique combination of ductility (e.g., tensile elongation at break), impact strength (e.g., Charpy notched impact strength), and dimensional stability is provided. For example, the polymer composition may contain a liquid crystalline polymer in combination with an epoxy-functionalized olefin copolymer and an inorganic particulate material.
摘要:
This present disclosure relates to durable polymers blends comprising a polyamide polymer, a polyester polymer, and an epoxy-based compatibilizer. The present disclosure further relates to devices, processes, methods and uses involving such polymers.
摘要:
The present invention relates to thermoplastic silicone elastomer compositions comprising a blend of an organic thermoplastic elastomer and a silicone composition, and to a process for forming a vulcanised thermoplastic elastomer composition. also presented are uses of such thermoplastic elastomer compositions to form functional and aesthetics automotive parts such as gear knobs, seat belt connector, interior mat, airbag protective cover, over-moulded skin for dash board and armrest; to form appliance parts soft-feel grips for hand held devices; to form medical devices, sporting goods and general rubber parts; requiring durable aesthetics, haptic and ergonomic properties along with stability to most commonly used chemicals and high mechanical performances, abrasion and scratch resistance.
摘要:
La présente invention concerne un encapsulant (22) de module photovoltaïque (20), destiné à venir enrober une pile photovoltaïque (10), constitué par une composition ne comprenant aucun agent de réticulation et comprenant: -un copolymère éthylène –acrylate d'alkyle, ledit copolymère représentant entre 70% et 96% du poids de ladite composition; -un silane, représentant entre 0,1% et 2% du poids de ladite composition; caractérisé en ce qu'elle comprend en outre un terpolymère éthylène –acrylique ester –anhydride maléique ou méthacrylate de glycidyle, ledit terpolymère représentant de 2% à 29,9% du poids de ladite composition. L'invention se rapporte également à une utilisation d'un tel encapsulant dans un module photovoltaïque ainsi qu'un module photovoltaïque incorporant un tel encapsulant.
摘要:
La présente invention concerne l'utilisation d'une composition bitumineuse comme liant de collage. La composition bitumineuse comprend au moins un additif acide de formule générale (I) : R-(COOH)z dans laquelle R est une chaîne hydrocarbonée linéaire ou ramifiée, saturée ou insaturée comprenant de 4 à 68 atomes de carbone, de préférence de 4 à 54 atomes de carbone, plus préférentiellement de 4 à 36 atomes de carbone et z un entier variant de 1 à 4, de préférence de 2 à 4.
摘要:
A polymeric material having anistotropic properties, such as mechanical properties (e.g., modulus of elasticity), thermal properties, barrier properties (e.g., breathability), and so forth, is provided. The anisotropic properties can be achieved for a single, monolithic polymeric material through selective control over the manner in which the material is formed. For example, one or more zones of the polymeric material can be strained to create a unique network of pores within the strained zone(s). However, zones of the polymeric material that are not subjected to the same degree of deformational strain will not have the same pore volume, and in some cases, may even lack a porous network altogether.
摘要:
A polyolefin material that is formed by solid state drawing of a thermoplastic composition containing a continuous phase that includes a polyolefin matrix polymer and nanoinclusion additive is provided. The nanoinclusion additive is dispersed within the continuous phase as discrete nano-scale phase domains. When drawn, the nano-scale phase domains are able to interact with the matrix in a unique manner to create a network of nanopores.