According to one aspect of the present invention, there is provided a hollow structure body having a hollow structure, in which a first shaped product constituted by a first fiber-reinforced resin material containing first reinforcing fibers and a first matrix resin and a second shaped product constituted by a second fiber-reinforced resin material containing second reinforcing fibers and a second matrix resin are combined, wherein in an arbitrary cross section in a direction perpendicular to an axial direction of the hollow structure, a ratio Sc/St between compressive strength Sc of a structure in the first shaped product and tensile strength St of a structure in the second shaped product satisfies formula (1):
(σc/σt)*(Hc/Ht)<(Sc/St)<(σt/σc)*(Hc/Ht)  formula (1).

According to one aspect of the present invention, there is provided a hollow structure body having a hollow structure, in which a first shaped product constituted by a first fiber-reinforced resin material containing first reinforcing fibers and a first matrix resin and a second shaped product constituted by a second fiber-reinforced resin material containing second reinforcing fibers and a second matrix resin are combined, wherein in an arbitrary cross section in a direction perpendicular to an axial direction of the hollow structure, a ratio Sc/St between compressive strength Sc of a structure in the first shaped product and tensile strength St of a structure in the second shaped product satisfies formula (1):
(σc/σt)*(Hc/Ht)<(Sc/St)<(σt/σc)*(Hc/Ht)  formula (1).

Methods for fabricating composite tools and composite tools are provided. In an exemplary embodiment, a method for fabricating a composite tool includes providing a master mold and forming a low temperature cured resin laminate overlying the master mold. The low temperature cured resin laminate is heated and compressed to form a cured low temperature cured resin laminate, the low temperature cured resin laminate heated to a first temperature. The cured low temperature cured resin laminate is removed from the master mold and a high temperature cured resin laminate is formed overlying the cured low temperature cured resin laminate. The high temperature cured resin laminate is heated and compressed to form a cured high temperature cured resin laminate. The high temperature cured resin laminate is heated to a second temperature, wherein the second temperature is higher than the first temperature.

A process for the manufacture of a degradable polycyanurate bulk molding composition includes: contacting a liquid cyanate ester monomer with an additive material and a polymerization catalyst to form a reaction mixture; maintaining a temperature of the reaction mixture at about 80° C. to about 100° C. to form a polycyanurate product having a viscosity of about 120 to about 200 centipoise at 23° C.; heating a reinforcing filler at a temperature of about 50 to about 150° C. to form a pre-heated reinforcing filler; and blending the polycyanurate product with the pre-heated reinforcing filler to form the degradable polycyanurate bulk molding composition. The bulk molding composition can be used to form a degradable polycyanurate article.

The present invention relates to a water-soluble pre-reacted binder composition, a method of its manufacture, a use of said pre-reacted binder composition, a method of manufacturing a collection of matter bound by a polymeric binder, a binder solution or dispersion comprising said pre-reacted binder composition, as well as products comprising the pre-reacted binder composition in a cured state.

Various embodiments disclosed relate to anti-static compositions and gloves made from the same. In various embodiments, the present invention provides a doped polyaniline comprising a dopant that is a polyacrylic acid; a polymethacrylic acid; a sulfonatocalixarene; a cyclodextrin sulfate; a compound having the structure:

##STR00001##

wherein R.sup.2 is chosen from substituted or unsubstituted (C.sub.1-C.sub.10)hydrocarbyl- and substituted or unsubstituted (C.sub.1-C.sub.10)hydrocarbyl-O—. L.sup.1 is substituted or unsubstituted (C.sub.1-C.sub.10)hydrocarbylene. L.sup.2 is chosen from a bond, —O—, —O—C(O)—, and —NH—C(O)—, and n is about 1 to about 100,000; a salt thereof; or a combination thereof.

A nitrogen-containing porous carbon material, and a capacitor and a manufacturing method thereof are provided. A carbon material, a macromolecular material and a modified material are mixed into a preform. The modified material includes nitrogen. A formation process is performed on the preform to obtain a formed object. High-temperature sintering is performed on the formed object to decompose and remove a part of the macromolecular material, while the other part of the macromolecular material and the carbon material together form a backbone structure including a plurality of pores. As such, the nitrogen becomes attached to the backbone structure to form a hydrogen-containing functional group to further obtain the nitrogen-containing porous carbon material. The nitrogen-containing porous carbon material may form a first nitrogen-containing porous carbon plate and a second nitrogen-containing porous carbon plate, which are placed in seawater to form a storage capacitor for seawater.

A method is provided for producing a decorative structural plastic part. That method includes the steps of two-shot molding a structural plastic layer with a decoration-compatible plastic layer, mechanically bonding the structural plastic layer with the decoration-compatible plastic layer to form an integral plastic part body and applying a decoration to the decoration-compatible plastic layer following molding.

The present invention relates to a water-soluble pre-reacted binder composition, a method of its manufacture, a use of said pre-reacted binder composition, a method of manufacturing a collection of matter bound by a polymeric binder, a binder solution or dispersion comprising said pre-reacted binder composition, as well as products comprising the pre-reacted binder composition in a cured state.

Polymerizable liquids are described herein which, in some embodiments, can produce 3D printed articles of high resolution and desirable mechanical properties. In one aspect, a polymerizable liquid comprises an acrylate component, a polymeric additive, and a monomeric curing agent, wherein the acrylate component and monomeric curing agent are copolymerizable upon exposure to light. In being copolymerizable, the acrylate component and monomeric curing agent can form a copolymer. As described father herein, the monomeric curing agent can enable further reaction of the copolymer with one or more crosslinking species to link the copolymer with one more polymeric networks.