Coating compositions for coating an oilfield operational component, and related methods, may include in some aspects a coating composition having a trifunctional silane, a silanol, and a filler. The coating composition may be applied to a surface of the oilfield operational component that is configured to be exposed to a fluid. The coating composition may be applied to at least partially cover or coat the surface. The coating composition may be configured to chemically bond with a cured primer composition that includes an epoxy.

Coating compositions for coating an oilfield operational component, and related methods, may include in some aspects a coating composition having a trifunctional silane, a silanol, and a filler. The coating composition may be applied to a surface of the oilfield operational component that is configured to be exposed to a fluid. The coating composition may be applied to at least partially cover or coat the surface. The coating composition may be configured to chemically bond with a cured primer composition that includes an epoxy.

Coating compositions for coating an oilfield operational component, and related methods, may include in some aspects a coating composition having a trifunctional silane, a silanol, and a filler. The coating composition may be applied to a surface of the oilfield operational component that is configured to be exposed to a fluid. The coating composition may be applied to at least partially cover or coat the surface. The coating composition may be configured to chemically bond with a cured primer composition that includes an epoxy.

Coating compositions for coating an oilfield operational component, and related methods, may include in some aspects a coating composition having a trifunctional silane, a silanol, and a filler. The coating composition may be applied to a surface of the oilfield operational component that is configured to be exposed to a fluid. The coating composition may be applied to at least partially cover or coat the surface. The coating composition may be configured to chemically bond with a cured primer composition that includes an epoxy.

Coating compositions for coating an oilfield operational component, and related methods, may include in some aspects a coating composition having a trifunctional silane, a silanol, and a filler. The coating composition may be applied to a surface of the oilfield operational component that is configured to be exposed to a fluid. The coating composition may be applied to at least partially cover or coat the surface. The coating composition may be configured to chemically bond with a cured primer composition that includes an epoxy.

A phosphorus-containing silane compound has a structure of SiR.sub.1(R.sub.2).sub.n(R.sub.3).sub.3-n, wherein R.sub.1 is a phenyl group, R.sub.2 is a vinyl group, R.sub.3 each independently is a structure of Formula (I) or Formula (II), and n is 1 or 2. Moreover, a method of making the phosphorus-containing silane compound, a resin composition including the phosphorus-containing silane compound and a resin additive and an article made from the resin composition are described. The article includes a prepreg, a resin film, a laminate or a printed circuit board, wherein one or more properties including Z-axis ratio of thermal expansion, copper foil peeling strength, inner resin flow, branch-like pattern, dielectric constant, dissipation factor and flame retardancy may be improved. ##STR00001##

A phosphorus-containing silane compound has a structure of SiR.sub.1(R.sub.2).sub.n(R.sub.3).sub.3-n, wherein R.sub.1 is a phenyl group, R.sub.2 is a vinyl group, R.sub.3 each independently is a structure of Formula (I) or Formula (II), and n is 1 or 2. Moreover, a method of making the phosphorus-containing silane compound, a resin composition including the phosphorus-containing silane compound and a resin additive and an article made from the resin composition are described. The article includes a prepreg, a resin film, a laminate or a printed circuit board, wherein one or more properties including Z-axis ratio of thermal expansion, copper foil peeling strength, inner resin flow, branch-like pattern, dielectric constant, dissipation factor and flame retardancy may be improved. ##STR00001##

Articles are described comprising a substrate and a hardcoat layer disposed on the substrate. The hardcoat layer comprises the hydrolyzed and condensed reaction product of a composition comprising: i) first hydrophobic silane monomer(s) having the formula R.sup.1Si(OR).sub.3 wherein R and R.sup.1 is methyl or ethyl; ii) optional second silane monomer(s) having the formula (R.sup.2).sub.4-mSi(OR).sub.m or Si(OR).sub.4, wherein R, R.sup.1 and R.sup.2 are organic groups with the proviso that R.sup.1 is not methyl or ethyl and m ranges from 1 to 3. The hardcoat layer N may further comprises 10 to 30 wt. % silica nanoparticles. A surface layer comprising a hydrophilic silane may be disposed on the hardcoat layer. Also described is a method of using an article having a rewritable surface, hardcoat coating compositions, and methods of making hardcoat compositions and articles.

Articles are described comprising a substrate and a hardcoat layer disposed on the substrate. The hardcoat layer comprises the hydrolyzed and condensed reaction product of a composition comprising: i) first hydrophobic silane monomer(s) having the formula R.sup.1Si(OR).sub.3 wherein R and R.sup.1 is methyl or ethyl; ii) optional second silane monomer(s) having the formula (R.sup.2).sub.4-mSi(OR).sub.m or Si(OR).sub.4, wherein R, R.sup.1 and R.sup.2 are organic groups with the proviso that R.sup.1 is not methyl or ethyl and m ranges from 1 to 3. The hardcoat layer N may further comprises 10 to 30 wt. % silica nanoparticles. A surface layer comprising a hydrophilic silane may be disposed on the hardcoat layer. Also described is a method of using an article having a rewritable surface, hardcoat coating compositions, and methods of making hardcoat compositions and articles.

A wireless charging apparatus according to an embodiment includes a magnetic unit with a low strain rate (thermal strain) at 180° C., wherein a position change (ΔDR1) at 180° C. is 0.07 or less, to thereby provide the magnetic unit with improved heat resistance and magnetic properties and prevent deformation and damage of the magnetic unit during wireless charging, and further improve the high temperature stability and charging efficiency. Therefore, the wireless charging apparatus can be efficiently used in personal transportation means such as electric motorcycles, electric kickboards, electric scooters, electric wheelchairs, and electric bicycles, as well as transportation means such as electric vehicles requiring large-capacity power transmission between a transmitter and a receiver.