摘要:
Stretch films which exhibit good puncture and impact resistance while also exhibiting resistance to defect propagation are desired. The films of the present invention have an ultimate stretch of at least 200 percent, a dart impact strength of at least about 700 gms/mil and a catastrophic failure stretch of at least 95 percent of the elongation to break value (CF of 5 or less). The films preferably comprise at least 3 layers and preferably comprise at least 50 percent by weight of polyethylene polymers.
摘要:
Stabilized polyethylene materials which offer an advantageously balanced combination of thermal, mechanical and processing properties, and which maintain their physical properties in chlorinated water environments are disclosed. The materials include an antioxidant system with components to provide extraction resistance in hot water environments and additionally provides oxidation resistance to both chlorine in the water interior of the pipe and oxygen in contact with the pipe's exterior.
摘要:
A thermal energy storage material (TESM) system (and associated methods) that reproducibly stores and recovers latent heat comprising i) at least one first metal containing material including at least one first metal compound that includes a nitrate ion, a nitrite ion, or both; ii) at least one second metal containing material including at least one second metal compound; and iii) optionally including water, wherein the water concentration if any is present is less than about 10 wt. %; wherein the TESM has a liquidus temperature, TL, from about 100° C. to about 250° C.; and wherein the TESM exhibits a heat storage density from 300° C. to 80° C. of at least about 1 MJ/l; so that upon being used in a system that generates heat, at least a portion of the heat is captured and stored by the TESM and subsequently released for use, and the system is generally resistant to corrosion at temperatures of about 300° C.
摘要:
A method to join pipe is disclosed using a curable one or two part adhesive composition comprising an effective amount of a boron containing initiator compound such as an organoborate, a stabilized organoborane complex, or combinations thereof; one or more monomers, oligomers, polymers or mixtures thereof having olefinic unsaturation which is capable of polymerization by free radical polymerization; and optionally a decomplexing agent.
摘要:
An improved energy absorbing member comprising, an thermoplastic cellular polymer in contact with a structural element such as a metal guard rail or automotive door, wherein the cellular polymer has an average cell size of at least about 0.75 mm and at least one of CE/CT, CV/CT and CH/CT is about 0.25 to about 0.4 said one of CE/CT, CV/CT and CH/CT having a compressive efficiency of at least 70% at a 60% strain, CE, CV and CH being the compressive strength of the cellular polymer in each of three orthogonal directions E, V and H where one of these directions is the direction of maximum compressive strength in the foam and CT equals the sum of CE, CV and CH.
摘要:
Stretch films which exhibit good puncture and impact resistance while also exhibiting resistance to defect propagation are desired. The films of the present invention have an ultimate stretch of at least 200 percent, a dart impact strength of at least about 700 gms/mil and a catastrophic failure stretch of at least 95 percent of the elongation to break value (CF of 5 or less). The films preferably comprise at least 3 layers and preferably comprise at least 50 percent by weight of polyethylene polymers.
摘要:
Disclosed are propylene polymer compositions comprising a high crystalline propylene polymer, a substantially linear ethylene polymer, linear ethylene polymer or combinations thereof, an optional filler and an optional additional polymer. Said propylene polymer compositions have improved processability with a good balance of stillness and toughness which demonstrates improved scratch resistance in injection molded articles.
摘要:
The invention is directed at devices, systems, and processes for managing the temperature of an electrochemical call including a device 10 comprising an inlet for receiving a heat transfer fluid; one or more electrochemical cell compartments 12 for receiving one or more electrochemical calls 20; one or more thermal energy storage material compartments 14 containing one or more thermal energy storage materials 18; and one or more heat transfer fluid compartments 16 for flowing the heat transfer fluid through the device; wherein the space between the one or more heat transfer fluid compartments 16 and the one or more electrochemical cell compartments 12 preferably includes one or more first regions 22 (i.e. portion) that are substantially free of the thermal energy storage material 18; and the space between the one or more heat transfer fluid compartments 16 and the one or more thermal energy storage material compartments 14 preferably includes one or more second regions 24 (i.e. portion) that are substantially free of an electrochemical cell 20; so that the heat transfer fluid compartment 16 is in direct thermal communication with both the thermal energy storage material compartment 14 and the electrochemical cell compartment 12.
摘要:
The thermal energy storage material (TESM) system includes a container having a wall surface, and a TESM in at least partial contact with the wall surface. The TESM may include, consist essentially of, or consist of a metal containing compound comprising lithium, one or more different metal cations (i.e., different from lithium) and one or more polyatomic anions. The TESM may have a liquidus temperature, TL, from about 100° C. to about 250° C. The TESM may exhibits a heat storage density from 1 MJ/l to 1.84 MJ/l, as measured from 300° C. to 80° C. The TESM system may be free of water. If any water is present in the TESM system, the water concentration preferably is less than 10 wt. %. Preferably, the TESM system is generally resistant to corrosion at temperatures of about 300° C.
摘要:
The invention is directed at articles and devices for thermal energy storage, and for process of storing energy using these articles and devices. The articles comprise a capsular structure 10 having one or more sealed spaces 14, wherein the sealed spaces encapsulate one or more thermal energy storage materials 26: wherein the capsular structure has one or more fluid passages 16 which are sufficiently large to allow a heat transfer fluid to flow through the one or more fluid passages; and when a heat transfer fluid contacts the capsular structure 10 the thermal energy storage material 26 is Isolated from the heal transfer fluid. The devices include two or more articles arranged so that a fluid, such as a heat transfer fluid, may flow through the fluid passage 16 of an article before or after flowing through a space between two of the articles.