Insulation materials comprising fibers having a partially cured polymer coating thereon, articles including such insulation materials, and methods of forming such materials and articles

Insulation materials have a coating of a partially cured polymer on a plurality of fibers, and the plurality of coated fibers in a cross-linked polymeric matrix. Insulation may be formed by applying a preceramic polymer to a plurality of fibers, heating the preceramic polymer to form a partially cured polymer over at least portions of the plurality of fibers, disposing the plurality of fibers in a polymeric material, and curing the polymeric material. A rocket motor may be formed by disposing a plurality of coated fibers in an insulation precursor, curing the insulation precursor to form an insulation material without sintering the partially cured polymer, and providing an energetic material over the polymeric material. An article includes an insulation material over at least one surface.

INSULATION MATERIALS COMPRISING FIBERS HAVING A PARTIALLY CURED POLYMER COATING THEREON, ARTICLES INCLUDING SUCH INSULATION MATERIALS, AND METHODS OF FORMING SUCH MATERIALS AND ARTICLES

Insulation materials have a coating of a partially cured polymer on a plurality of fibers, and the plurality of coated fibers in a cross-linked polymeric matrix. Insulation may be formed by applying a preceramic polymer to a plurality of fibers, heating the preceramic polymer to form a partially cured polymer over at least portions of the plurality of fibers, disposing the plurality of fibers in a polymeric material, and curing the polymeric material. A rocket motor may be formed by disposing a plurality of coated fibers in an insulation precursor, curing the insulation precursor to form an insulation material without sintering the partially cured polymer, and providing an energetic material over the polymeric material. An article includes an insulation material over at least one surface.

INSULATION MATERIALS COMPRISING FIBERS HAVING A PARTIALLY CURED POLYMER COATING THEREON, ARTICLES INCLUDING SUCH INSULATION MATERIALS, AND METHODS OF FORMING SUCH MATERIALS AND ARTICLES

Insulation materials have a coating of a partially cured polymer on a plurality of fibers, and the plurality of coated fibers in a cross-linked polymeric matrix. Insulation may be formed by applying a preceramic polymer to a plurality of fibers, heating the preceramic polymer to form a partially cured polymer over at least portions of the plurality of fibers, disposing the plurality of fibers in a polymeric material, and curing the polymeric material. A rocket motor may be formed by disposing a plurality of coated fibers in an insulation precursor, curing the insulation precursor to form an insulation material without sintering the partially cured polymer, and providing an energetic material over the polymeric material. An article includes an insulation material over at least one surface. 1. An insulation material , comprising:a heat-affected region comprising fibers with a ceramic thereon; anda virgin material region comprising the fibers comprising a partially cured preceramic polymer coating thereon and disposed in a cross-linked polymeric matrix, wherein a preceramic polymer of the partially cured preceramic polymer coating comprises a material selected from the group consisting of a polycarbosilane, a polysilazane, a polysiloxane, and combinations thereof.2. The insulation material of claim 1 , wherein the heat-affected region comprises the ceramic over the fibers.3. The insulation material of claim 1 , wherein the heat-affected region comprises the ceramic around the fibers.4. The insulation material of claim 1 , wherein the heat-affected region comprises an ablated region and a char region.5. The insulation material of claim 4 , wherein a portion of the char region is adhered to the virgin material region.6. The insulation material of claim 1 , wherein the heat-affected region comprises ash.7. The insulation material of claim 1 , wherein the ceramic comprises silicon dioxide claim 1 , silicon carbide claim 1 , or a combination thereof.8. The insulation ...

Insulator.

Toy

Floor clamp

Set trigger mechanism

Method of and apparatus for purging an annular bayonet

An annular bayonet vacuum cup allows a vacuum to be pulled on an annular bayonet and the bayonet to be filled with propellant that is devoid of air. The vacuum cup is transparent/translucent and allows the propellant to be seen as it leaves the exit end of the bayonet. This alerts an operator to cut off the vacuum pressure thereby to keep the excess of propellant flow to a minimum, which excess drops into the vacuum cup and is prevented from contaminating the vacuum line. The vacuum cup is disposable (an O-ring sealing ring being reusable) and eliminates propellant clean-up.