A composite structure comprising a resinous component that is adhered to a surface of a metal component is provided. The resinous component is formed from a polymer composition that comprises a polyarylene sulfide, inorganic fibers, and an impact modifier. The inorganic fibers have an aspect ratio of from about 1.5 to about 10.

Disclosed herein is a prepreg including a woven fabric base and a semi-cured product of a resin composition impregnated into the woven fabric base. The resin composition contains a maleimide resin as Component (A), an acrylic resin as Component (B), and a phenol resin as Component (C). The Component (B) has a weight average molecular weight falling within the range from 200,000 to 850,000.

Disclosed herein is a prepreg including a woven fabric base and a semi-cured product of a resin composition impregnated into the woven fabric base. The resin composition contains a maleimide resin as Component (A), an acrylic resin as Component (B), and a phenol resin as Component (C). The Component (B) has a weight average molecular weight falling within the range from 200,000 to 850,000.

Reprocessable materials are provided that include a product of cross-linking a glycidyl methacrylate grafted high-density polyethylene (HDPE-g-GMA) with a polymacrolactone of formula (II) to form a cross-linked polymer exhibiting vitrimer characteristics. Methods for preparing the cross-linked polymer materials include reacting the glycidyl methacrylate grafted high-density polyethylene of with the polymacrolactone in the presence of a first catalyst under conditions that initiate cross-linking of HDPE-g-GMA with the polymacrolactone. Mechanically reprocessable articles include a structural element that is or includes the cross-linked polymer material. Examples of the mechanically reprocessable articles include pallets or molded structures formed from the material and configured to support a load of at least 1000 kg without bending.

Reprocessable materials are provided that include a product of cross-linking a glycidyl methacrylate grafted high-density polyethylene (HDPE-g-GMA) with a polymacrolactone of formula (II) to form a cross-linked polymer exhibiting vitrimer characteristics. Methods for preparing the cross-linked polymer materials include reacting the glycidyl methacrylate grafted high-density polyethylene of with the polymacrolactone in the presence of a first catalyst under conditions that initiate cross-linking of HDPE-g-GMA with the polymacrolactone. Mechanically reprocessable articles include a structural element that is or includes the cross-linked polymer material. Examples of the mechanically reprocessable articles include pallets or molded structures formed from the material and configured to support a load of at least 1000 kg without bending.

A rubber composition is based on at least: a copolymer A, with a content of greater than or equal to 50 phr, said copolymer A being a copolymer based on at least one ethylene monomer and on at least one vinyl acetate monomer a reinforcing inorganic filler as agent for coupling between said copolymer A and said reinforcing inorganic filler, a copolymer B different from said copolymer A, said copolymer B being a copolymer based on at least one alpha-olefin monomer and on at least one functional monomer Y; and a peroxide crosslinking system. This composition is especially intended for the manufacture of semi-finished products for tires or for the manufacture of tires.

Thermoplastic elastomers comprising micronized or pulverized rubber powders are disclosed having physical properties equivalent to those of virgin thermoplastic elastomers. For example, the use of finer mesh MRP (e.g., particles of size that would pass through 40 mesh or smaller) to manufacture thermoplastic elastomers results in thermoplastic elastomers that have physical properties equivalent to those of virgin thermoplastic elastomers. Similarly, the use of a glycidyl functional terpolymer (optionally in combination with trimellitic anhydride or “TMA”) to manufacture thermoplastic elastomers comprising MRP results in thermoplastic elastomers that have physical properties equivalent to those of virgin thermoplastic elastomers. Moreover, the use of styrene-ethylene/butylene-styrene thermoplastic (e.g., “SEBS”) in place of the base polypropylene thermoplastic elastomer to manufacture thermoplastic elastomers comprising MRP also results in thermoplastic elastomers that have physical properties equivalent to those of virgin thermoplastic elastomers.

Thermoplastic elastomers comprising micronized or pulverized rubber powders are disclosed having physical properties equivalent to those of virgin thermoplastic elastomers. For example, the use of finer mesh MRP (e.g., particles of size that would pass through 40 mesh or smaller) to manufacture thermoplastic elastomers results in thermoplastic elastomers that have physical properties equivalent to those of virgin thermoplastic elastomers. Similarly, the use of a glycidyl functional terpolymer (optionally in combination with trimellitic anhydride or “TMA”) to manufacture thermoplastic elastomers comprising MRP results in thermoplastic elastomers that have physical properties equivalent to those of virgin thermoplastic elastomers. Moreover, the use of styrene-ethylene/butylene-styrene thermoplastic (e.g., “SEBS”) in place of the base polypropylene thermoplastic elastomer to manufacture thermoplastic elastomers comprising MRP also results in thermoplastic elastomers that have physical properties equivalent to those of virgin thermoplastic elastomers.

The present invention is a soluble material for three-dimensional modeling that is used as a material of a support material for supporting a three-dimensional object when the three-dimensional object is manufactured by a 3D printer of a fused deposition modeling system and that contains a thermoplastic resin having a hydrophilic group and an organic salt compound represented by a general formula (I) below: (R.sup.1—SO.sub.3.sup.−).sub.nX.sup.n+ (I). According to the present invention, it is possible to provide a soluble material for three-dimensional modeling that is used for a support material and that is capable of suppressing the degradation of the modeling accuracy of a three-dimensional object when the three-dimensional object is manufactured by a 3D printer of a fused deposition modeling system, and has a high rate of dissolution to neutral water to be removable speedily from a precursor of the three-dimensional object without use of a strong alkaline aqueous solution.

The present invention is a soluble material for three-dimensional modeling that is used as a material of a support material for supporting a three-dimensional object when the three-dimensional object is manufactured by a 3D printer of a fused deposition modeling system and that contains a thermoplastic resin having a hydrophilic group and an organic salt compound represented by a general formula (I) below: (R.sup.1—SO.sub.3.sup.−).sub.nX.sup.n+ (I). According to the present invention, it is possible to provide a soluble material for three-dimensional modeling that is used for a support material and that is capable of suppressing the degradation of the modeling accuracy of a three-dimensional object when the three-dimensional object is manufactured by a 3D printer of a fused deposition modeling system, and has a high rate of dissolution to neutral water to be removable speedily from a precursor of the three-dimensional object without use of a strong alkaline aqueous solution.