摘要:
A low viscosity polysulfide sealant composition. The composition comprises a curable polysulfide polymer; a crosslinking agent; and a plurality of core-shell particles. The core-shell particles comprise: a core comprising a ferromagnetic material; and a shell comprising silica treated with an organic sulfur containing compound. The shell is capable of bonding with the polysulfide polymer.
摘要:
A crystalline titanium and magnesium compound having an X-ray diffraction pattern having interplanar spacing ( d -spacing) values at about 5.94, 3.10, 2.97, 2.10, 1.98, 1.82, and 1.74 ± 0.1 angstroms may be used in protective coatings for metal or metal alloy substrates. The coatings exhibit excellent corrosion resistances and provide corrosion protection equal to or better than typical non-chromate coatings.
摘要:
Co-curable and co-cured UV/visible light-resistant fiberglass-coated UV/visible light composite structural material substrates, and aircraft fuselages comprising co-cured UV/visible light-resistant fiberglass-coated composite material substrates and methods of their manufacture are disclosed.
摘要:
Aspects of the present disclosure provide titanium-based coatings and methods for making titanium-based coatings on surfaces. In at least one aspect, a coating includes an oxygen content, a fluorine content, a titanium content, and a sodium content. In one or more additional aspects, a coating includes titanium dioxide and Na 5 Ti 3 F 14 . In one or more additional aspects, a method of making a titanium-based coating includes contacting a substrate with a composition that includes from about 0.01 M to about 0.8 M of a titanium fluoride, from about 0.01 M to about 2 M of a sodium salt, and from about 0.1 M to about 1.5 M of a fluorine scavenger.
摘要:
A high viscosity polysulfide sealant composition, comprising a curable polysulfide polymer, a crosslinking agent, and a powder. The powder comprises high surface area MnO 2 particles having a particle size of 100 nm or less. The high viscosity polysulfide sealant composition has a viscosity ranging from about 1000 Poise to about 100,000 Poise.
摘要:
The present disclosure is directed to a thermoresponsive adhesive material. The material comprises a linear, phase-separated polymer having fluorinated polymer units and hydrophobic polymer units. The fluorinated polymer units and the hydrophobic polymer units are randomly ordered along the polymer. The hydrophobic polymer units include a first hydrophobic polymer unit and a second hydrophobic polymer unit. The first hydrophobic polymer unit is chosen from acrylate units or methacrylate units each substituted with one or more linear alkyl groups, linear alkenyl groups or a combination thereof, where at least one of the linear alkyl groups or alkenyl groups has 16 to 20 carbon atoms. The second hydrophobic polymer unit is chosen from acrylate units or methacrylate units each substituted with one or more linear alkyl groups, linear alkenyl groups or a combination thereof, where at least one of the linear alkyl or alkenyl groups of the second hydrophobic polymer unit has 5 to 14 carbon atoms. A peak adhesive strength of the thermoresponsive adhesive material is modifiable and reversible with a change in temperature. Methods of making thermoresponsive adhesive materials, methods employing thermoresponsive adhesive materials and self-adhesive objects that include thermoresponsive adhesive materials are also disclosed.
摘要:
A method of making a composite part comprises covering a mold tool for a composite part with a parting film, the parting film comprising a polymer sheet and a pressure sensitive adhesive. The parting film is positioned so that the polymer sheet is between the mold tool and the pressure sensitive adhesive. At least one layer of pre-preg is layed up on the parting film covering the mold tool to form a layed-up composite part. The pre-preg comprises an adhesive. The layed-up composite part is removed from the parting film.