Provided is a method for splitting a carbon fiber tow, which comprises heating a carbon fiber tow sized with a first sizing material to soften the first sizing material and form a spread carbon fiber tow; passing the spread carbon fiber tow through at least one splitter and corresponding cutter to obtain multiple carbon fiber strands spaced apart; and sizing the carbon fiber strands with a second sizing material. With the method, multiple small carbon fiber tows having better tensile strength and/or modulus than the commercially available small carbon fiber tow products can be obtained. Products made of the small carbon fiber tows obtained by the present invention are lighter but stronger, and the production cost is relatively reduced. The present invention also achieves the purpose of energy saving and carbon reduction.

A long-range electrochromic fiber for infrared camouflage and preparation method thereof are disclosed. The method includes: coating indium tin oxide dispersion, electrolyte solution, and electrochromic material on the surface of the metal fiber sequentially, and preparing counter electrodes and polymer protective layer on the outside of the electrochromic layer to obtain the long-range electrochromic fiber. The obtained long-range electrochromic fiber can realize the regulation of infrared emissivity, can be continuously prepared for more than 100 meters and has a good application prospect in infrared camouflage, wearable display, etc.

A long-range electrochromic fiber for infrared camouflage and preparation method thereof are disclosed. The method includes: coating indium tin oxide dispersion, electrolyte solution, and electrochromic material on the surface of the metal fiber sequentially, and preparing counter electrodes and polymer protective layer on the outside of the electrochromic layer to obtain the long-range electrochromic fiber. The obtained long-range electrochromic fiber can realize the regulation of infrared emissivity, can be continuously prepared for more than 100 meters and has a good application prospect in infrared camouflage, wearable display, etc.

A textile fabric made from aramid fibers finished with a finishing agent. The finishing agent includes a carbonic acid polyester. The textile fabric can be incorporated into a penetration-resistant article. The penetration-resistant article can be a fragment protection mat, a bullet-proof vest, a flak jacket, a stab-resistant vest, or a combination thereof.

A textile fabric made from aramid fibers finished with a finishing agent. The finishing agent includes a carbonic acid polyester. The textile fabric can be incorporated into a penetration-resistant article. The penetration-resistant article can be a fragment protection mat, a bullet-proof vest, a flak jacket, a stab-resistant vest, or a combination thereof.

Provided are a cellulose fiber containing cellulose II, the cellulose fiber having improved heat resistance, as well as a fiber reinforced resin composition, a method for producing the cellulose fiber, and a method for producing the fiber reinforced resin composition. The cellulose fiber contains the cellulose II having a content of an imidazolium salt of 1% by mass or less.

One example provides a composite. The composites includes a core layer comprising a thermoplastic polymer and having a first and a second sides opposite to each other; a first set of two layers disposed over at least a portion of the core layer respectively on the first and the second sides, each layer of the first set including carbon fibers aligned in a first direction in a plane; and a second set of two layers disposed over at least a portion of the first set of two layers respectively on the first and the second sides, each layer of the second set including carbon fibers aligned in a second direction perpendicular to the first direction in the plane In the plane, the composite has a length and a width, the length larger than the width and parallel to the second direction.

An aqueous treatment agent for preparing a cord by treating an untreated yarn for a power transmission belt includes at least a first aqueous treatment agent. The first aqueous treatment agent contains an epoxy resin (A), a polycarbonate polyol (B), and a blocked polyisocyanate (C). The epoxy resin (A) may contain a bisphenol type epoxy resin (A1). The polycarbonate polyol (B) may contain a polycarbonate diol (B1). The blocked polyisocyanate (C) may contain at least one blocked polyisocyanate selected from the group consisting of an aliphatic polyisocyanate or derivatives thereof and an aromatic polyisocyanate and having a dissociation temperature of 120° C. to 180° C.

An aqueous treatment agent for preparing a cord by treating an untreated yarn for a power transmission belt includes at least a first aqueous treatment agent. The first aqueous treatment agent contains an epoxy resin (A), a polycarbonate polyol (B), and a blocked polyisocyanate (C). The epoxy resin (A) may contain a bisphenol type epoxy resin (A1). The polycarbonate polyol (B) may contain a polycarbonate diol (B1). The blocked polyisocyanate (C) may contain at least one blocked polyisocyanate selected from the group consisting of an aliphatic polyisocyanate or derivatives thereof and an aromatic polyisocyanate and having a dissociation temperature of 120° C. to 180° C.

An aqueous treatment agent for preparing a cord by treating an untreated yarn for a power transmission belt includes at least a first aqueous treatment agent. The first aqueous treatment agent contains an epoxy resin (A), a polycarbonate polyol (B), and a blocked polyisocyanate (C). The epoxy resin (A) may contain a bisphenol type epoxy resin (A1). The polycarbonate polyol (B) may contain a polycarbonate diol (B1). The blocked polyisocyanate (C) may contain at least one blocked polyisocyanate selected from the group consisting of an aliphatic polyisocyanate or derivatives thereof and an aromatic polyisocyanate and having a dissociation temperature of 120 C. to 180 C.