Patent classifications
B29C43/003
BALLISTIC-RESISTANT HELMET SHELL
The invention relates to a process for producing a ballistic-resistant curved molded article said process comprising forming a stack of a plurality of composite sheets, pressing the stack comprising the composite sheets at a temperature of between 80° C. to 150° C. and a pressure of between 10 and 400 bar for at least 5 minutes to obtain a curved molded article, cooling the compacted stack to a temperature below 80° C. while maintaining the pressure above 10 bar, releasing the pressure from the cooled curved molded article; wherein the composite sheets comprise unidirectionally aligned high tenacity polyethylene fibers and a matrix comprising a polyethylene resin being a homopolymer or copolymer of ethylene having a density of between 870 to 980 kg/m.sup.3 when measured according to ISO1183 and a melt flow index of between 0.5 and 50 g/10 min when measured according to ASTM 1238B-13 at a temperature of 190° C. and a weight of 21.6 kg.
METHOD FOR PRODUCING PRESS MOLDED BODY
The present invention provides a method for producing a press molded body, wherein a material X that contains a thermoplastic resin Rx and carbon fibers A having a weight average fiber length L.sub.WA and a material Y that contains a thermoplastic resin R.sub.Y and carbon fibers B having a weight average fiber length L.sub.WB are heated, and the heated material X and material Y are pressed within a mold at the same time, thereby producing a press molded body which has a region X that is formed of the material X and a region Y that is formed of the material Y. This method for producing a press molded body is configured such that: Lw.sub.B < Lw.sub.A; Lw.sub.B is from 0.1 mm to 15 mm (inclusive); and the press molded body has a transition zone XY wherein the region X and the region Y overlap with each other.
FLUORINE RUBBER COMPOSITION AND CROSSLINKED FLUORINE RUBBER PRODUCT
A bladder for tire vulcanizing containing a crosslinked fluoroelastomer obtained by peroxide-crosslinking a fluoroelastomer composition including a peroxide-crosslinkable fluoroelastomer (A), a carbon black (B), and a peroxide cross-linking agent (C), wherein the crosslinked fluoroelastomer has a hardness at 25° C. of 60 to 90, a number of foreign particles selected from the group consisting of lumps of carbon and carbon grit having an aspect ratio of 1.1 or less and a Heywood diameter of 5 μm or more present on a fracture surface obtained by tensile fracture of the crosslinked fluoroelastomer at 170° C. is 10/mm.sup.2 or less, and the fluoroelastomer (A) includes a vinylidene fluoride (VdF) fluoroelastomer.
Chemical intermediates by catalytic fast pyrolysis process
In this invention, a portion of the products from a pyrolysis reactor are reacted in a process to form one or more chemical intermediates.
Articles Produced from VDF-co-(TFE or TrFE) Polymers
VDF-co-(TFE or TrFE) polymers having a molecular weight of at least about 1,000,000 g/mol and a melt temperature less than about 240° C. The VDF copolymer contains at least about 50 mol % VDF monomer and may include an amount of at least one other monomer. The VDF copolymer may be used to form a membrane that has a node and fibril structure. The membrane has a percent porosity of at least 25%. A VDF-co-(TFE or TrFE) polymer membrane may be formed by lubricating the VDF copolymer, subjecting the lubricated polymer to pressure at a temperature below the melting point of the VDF copolymer to form a preform material, and expanding the preform material at a temperature below the melting temperature of the VDF copolymer. Dense VDF copolymer articles, filled VDF copolymer membranes, and VDF copolymer fibers are also provided.
Manufacture And Use Of Nonwoven Products Utilizing Ribbon Cross-Section Fibers For Automotive Applications
A molded automotive textile nonwoven and its associated method of manufacturing includes flat staple fibers exhibiting a width to thickness ratio of 2 to 10 and a denier in the range of 2 to 30. The molded automotive textile non-woven is a three-dimensional (3D) structure that includes one or a plurality of protrusions or recesses which fits to the metallic vehicle floor pan of the vehicle.
GRADIENT RESIN, PREPARATION METHOD THEREFOR AND USE THEREOF
Disclosed are a gradient resin, a preparation method therefor and the use thereof. The gradient resin of the present application is formed by fusing different layers with color transition changes, wherein the color transition change between the two adjacent layers is in the range of 0.1% to 5 20%. The gradient resin is composed of, by mass percentage, 98%-99.99% of a resin powder and 0.01%-2% of a pigment.
Carbon nano-material pellets and a method for preparing the pellets from powder of carbon nano-material
Disclosed are a carbon nanomaterial pellet and a method for preparing same. More particularly, it relates to a carbon nanomaterial pellet having a specific size and a high apparent density prepared by a simple process using only a rotary tablet press without mixing a carbon nanomaterial powder with a solvent or an additive, which is capable of solving the powder dust problem occurring when preparing a polymer composite from a carbon nanomaterial in the form of powder, thus improving physical properties and remarkably reducing cost of packaging and transportation, and a method for preparing the carbon nanomaterial pellet from a carbon nanomaterial powder.
MANUFACTURING THERMOPLASTIC COMPOSITES AND ARTICLES
Embodiments of the present technology may include a method of making a thermoplastic composite strand. The method may include melting a reactive thermoplastic resin to form a molten reactive resin. The method may also include fully impregnating a plurality of continuous fibers with the molten reactive resin in an impregnation device. The method may further include polymerizing the molten reactive resin to form a thermoplastic resin matrix. In addition, the method may include cooling the thermoplastic resin matrix to form a thermoplastic composite strand.
METHOD FOR PRODUCING THERMALLY CONDUCTIVE SHEET AND MULTILAYER BODY
The method for producing a thermally conductive sheet according to the present invention comprises: a step (1) of obtaining a liquid composition comprising a curable silicone composition including an alkenyl group-containing organopolysiloxane and a hydrogen organopolysiloxane, a thermally conductive filler, and a volatile compound; a step (2) of sandwiching the liquid composition between two resin sheets at least one of which is a gas-permeable film and pressurizing these to obtain a sheet-shaped formed product; and a step (3) of heating the sheet-shaped formed product to volatilize at least a part of the volatile compound. According to the present invention, it is possible to provide a method for producing a thermally conductive sheet having a good sheet condition and a low thermal resistance value.