Disclosed is a preparation method for corncob-shaped HNT-PANI/PP, specifically comprising: polymerizing aniline in situ on cleaned HNTs in an ice-water bath; mixing corncob-shaped HNT-PANI composite powder obtained by vacuum drying and PP plastic in a high-speed mixer in a certain ratio, performing extrusion granulation by using a twin-screw extruder, and performing injection molding by using an injection molding machine to prepare standard sample strips of an HNT-PANI/PP composite material. The corncob-shaped HNT-PANI composite material prepared according to the present invention has excellent electrical conductivity, thermal conductivity and flame retardance, the mechanical properties of the composite material can be improved, electrical and flame-retardant properties of PP engineering materials can be improved, and thus the application field of PP is greatly broadened.

A liquid crystal polyester resin composition includes resin pellets including a first liquid crystal polyester resin and a fibrous filler, a second liquid crystal polyester resin, and a metal salt of higher fatty acid, in which the second liquid crystal polyester resin has a lower flow starting temperature than the resin pellets, flow starting temperatures of the resin pellets and the second liquid crystal polyester resin are both 250° C. or higher, and a difference in the flow starting temperatures between the resin pellets and the second liquid crystal polyester resin is more than 10° C.

The present invention relates to: a liquid crystal polyester resin composition which contains a liquid crystal polyester resin and carbon fibers with a sizing agent; and a method for producing this liquid crystal polyester resin composition. The content of the carbon fibers with a sizing-agent is from 5 parts by mass to 120 parts by mass relative to 100 parts by mass of the liquid crystal polyester resin. With respect to the carbon fibers with a sizing-agent, the adhesion amount of the sizing agent with respect to the carbon fibers is from 0.1 parts by mass to 1.2 parts by mass relative to 100 parts by mass of the carbon fibers. If the carbon fibers with a sizing agent are heated from 25° C. to 400° C. in the air at a heating rate of 50° C./min, the mass loss rate within the range from 300° C. to 400° C. is less than 0.8% by mass.

The present invention relates to an injection molded product including a thermoplastic resin and a fibrous filler, wherein the thermoplastic resin includes at least 10% by mass of at least one selected from the group consisting of polypropylene and liquid crystal polyesters based on the total amount of the thermoplastic resin, the proportion of the fibrous filler having a fiber length of 1 mm or less in the injection molded product is 40% by mass or less based on the total amount of the fibrous filler, and a vertical-horizontal plane area of a test piece after ashing, which is determined by a specific ashing test, is at least 3.5 times the vertical-horizontal plane area of the test piece before ashing.

The present invention relates to a liquid crystal polyester resin molded article containing a thermoplastic resin comprising a liquid crystal polyester and a fibrous filler, in which the liquid crystal polyester resin molded article contain the fibrous filler in an amount of equal to or greater than 1 part by mass and equal to or smaller than 120 parts by mass with respect to 100 parts by mass of the thermoplastic resin, the proportion of the liquid crystal polyester with respect to 100 mass % of the thermoplastic resin is equal to or greater than 75 mass % and equal to or smaller than 100 mass %, and a length-weighted average fiber length of the fibrous filler is equal to or greater than 0.7 mm.

Liquid crystal polyester resin pellets containing a liquid crystal polyester and pitch-based carbon fibers, in which a length-weighted average fiber length of the pitch-based carbon fibers is equal to or greater than 100 μm, and the liquid crystal polyester has an interfacial shear strength of equal to or greater than 30 MPa with a single fiber of pitch-based carbon fibers after a sizing agent is removed, which is measured by a single fiber pull-out method; and a liquid crystal polyester resin molded article containing a liquid crystal polyester and pitch-based carbon fibers, in which a length-weighted average fiber length of the pitch-based carbon fibers is equal to or greater than 100 μm, and the liquid crystal polyester has an interfacial shear strength of equal to or greater than 30 MPa with a single fiber of pitch-based carbon fibers after a sizing agent is removed, which is measured by a single fiber pull-out method.

A process for recycling thermoplastic polymer material to produce polymer pre-form, the process comprising the steps of pre-treating a polymer material for example by separating, sorting, cleaning and/or shaping; shredding the pre-treated polymer to produce polymer flakes; and processing the polymer material to produce a pre-form, characterised in that prior to the step (iii) of producing the pre-form, the polymer flakes are compacted to form pellets.

The fluid feeding system includes a feed channel connected to the discharging device, a pump connected to the feed channel, a valve for blocking a flow of the fluid that flows toward the introduction chamber via the feed channel, and a control device for determining a pressure state on the pump side and carrying out an opening-and-closing control of the valve 70 based on the determination result. The control device carries out the opening-and-closing control in which the valve is made into an open state when the control device determines that a pressure P1 on the pump side reaches a pressure state exceeding a given pressure.

An apparatus and process or mixing granules and/or powders and/or liquids in rubber production plants, including: a mixer/extruder device for the production of a basic heterogeneous mixture; a plurality of distribution lines associated with said mixer/extruder device to supply the device itself with respective powdered and/or granulated and/or liquid products; the mixer/extruder device mixing the powdered and/or granulated and/or liquid products to obtain said heterogeneous mixture; at least one distribution line of a powdered product includes a pre-mixer arranged upstream of said mixer/extruder device to pre-mix said powdered product with at least one liquid product, preferably oil.

A fiber-reinforced molding material includes: as essential raw materials, a vinyl ester (A) which is a reaction product of an epoxy resin (a1) having an epoxy equivalent in the range of 180 to 500 and a (meth)acrylic acid (a2); an unsaturated monomer (B) having a flash point of 100° C. or higher; a thermoplastic resin (C); a polyisocyanate (D); a polymerization initiator (E); and carbon fibers (F) having a fiber length of 2.5 to 50 mm. The mass ratio ((A)/(B)) of the vinyl ester (A) to the unsaturated monomer (B) is in the range of 40/60 to 85/15. The molar ratio (NCO/OH) of the isocyanate group (NCO) of the polyisocyanate (D) to the hydroxy group (OH) of the vinyl ester (A) is in the range of 0.25 to 0.85.