摘要:
The present invention provides a unique fibrous sheet for forming a polymer gel electrolyte having ion conductivity, a unique polymer gel electrolyte using such a sheet, and a unique method for the manufacture thereof. More specifically, the present invention provides a unique fibrous sheet for forming a polymer gel electrolyte having excellent ion conductivity and suitable as an electrolyte for various electronic devices such as lithium primary batteries, lithium secondary batteries, and electric double layer capacitors, as well as a unique polymer gel electrolyte using such a sheet, and also a unique method for the manufacture thereof.
摘要:
A method for continuous preparation of a high consistency or liquid silicone rubber base does not cause abrasive wear of the extruder screw and of the extruder cylinder or blackening of the silicone rubber base even when the latter is admixed with such fillers as an inorganic filler in the form of a diatomaceous earth powder, quartz or a similar large-grained and hard substance, or with a fumed silica, sedimentary silica, or a similar reinforcing silica filler. The method comprises continuously kneading the following components in a multiple-stage shear type single-screw extruder: (A) a freely-flowable powdered silicone rubber mixture having its main components in the form of (a) a cross-linkable polydiorganosiloxane with a viscosity exceeding 1.times.10.sup.5 mPa.multidot.s at 25.degree. C. and (b) an inorganic filler, and (B) a high consistency silicone rubber base having its main components in the form of (a) a cross-linkable polydiorganosiloxane with a viscosity exceeding 1.times.10.sup.5 mPa.multidot.s at 25.degree. C. and (c) a reinforcing silica filler, or a liquid silicone rubber base having its main components in the form of (d) a cross-linkable polydiorganosiloxane with a viscosity below 1.times.10.sup.5 mPa.multidot.s at 25.degree. C. and (c) a reinforcing silica filler.
摘要:
The present invention relates to a method for the continuous preparation of heat-vulcanizing silicone rubber compounds. The method comprises continuous feeding of (A) 100 weight parts polydiorganosiloxane gum, (B) 5 to 100 weight parts reinforcing filler, and (C) up to 30 weight parts processing aid to a co-rotating twin-screw continuous compounding extruder. The components (A), (B), and (C) are continuously mixed in the extruder at a temperature in a range of about 200.degree. C. to 300.degree. C. The mixed components are then discharged, forming an extrudate. The extrudate is fed continuously to a counter-rotating twin-screw continuous compounding extruder, wherein the extrudate is continuously heat-treated at a temperature in a range of 150.degree. C. to 300.degree. C., forming the silicone rubber compound, which is then discharged from the counter-rotating twin-screw continuous compounding extruder.
摘要:
A method of improving the efficient depletion of the siloxane oligomer present in organopolysiloxane moldings by using supercritical carbon dioxide gas, so that this reduction in siloxane oligomer content is accomplished without cracking of the moldings by regulating the pressure reduction to less than 40 Kg/cm.sup.2 per 1 hour during the release to atmospheric pressure.
摘要:
A vulcanizable ethylene-propylene rubber composition with improved thermal aging resistance is made from ethylene-propylene rubber, an alkoxysilane such as N-(N-vinylbenzylaminoethyl)-gamma-aminopropyltrimethoxysilane or its hydrochloride, a reinforcing filler, and a vulcanizing agent. These vulcanizable ethylene-propylene rubber compositions can also contain vinyl group-containing organopolysiloxane gum. These compositions cure to rubber with excellent mechanical properties, excellent electrical insulation properties, and thermal aging resistance which makes them suitable for electrical wire insulation.
摘要:
Molded silicone rubber unitary bodies of a carbon black containing portion and a portion containing substantially no carbon black which is obtained from a platinum catalyzed addition reaction composition are useful as keyboard pads, zebra-type connectors, and electrical joints. These molded bodies can be made by tightly contacting the uncured composition containing substantially no carbon black with a cured silicone rubber containing the carbon black and then heating to cure.
摘要:
A cured silicone rubber is produced by heating at a temperature of at least 150 degrees C. under a pressure of at least 9.8 kilopascals gauge pressure a silicone rubber composition comprising an alkenyl-containing organopolysiloxane, an organohydrogenpolysiloxane and finely divided silica in the absence of a hydrosilation catalyst or organoperoxide.
摘要:
The novel primer compositions of this invention comprise (1) a silane containing at least one t-butyl peroxy group and no silicon-bonded ethylenically unsaturated hydrocarbon radicals, (2) an organosilicon compound containing at least two alkoxy groups and at least one addition- or condensation reactive functional group per molecule, (3) an organotitanate ester and (4) sufficient organic solvent to achieve a solution of the desired viscosity. These compositions cohesively bond silicone rubber, particularly fluorosilicone rubber, to a variety of substrates.
摘要:
A silicone rubber covered electrical conductor is described which has good insulative resistance and is easily stripped for termination. The silicone rubber used as the insulation comprises an organopolysiloxane, a silica filler, zinc oxide or a zinc salt of a fatty acid, and orthochlorobenzoyl peroxide.