5 results about "Basalt fiber" patented technology

The invention relates to a halogen-free flame-retardant basalt fiber reinforced polylactic acid composite material and a preparation method thereof and belongs to the technical field of processing and application of halogen-free flame-retardant plastic. The composite material is mainly prepared from the following raw materials: polylactic acid, basalt fibers, hypophosphite, a nitrogen-containing flame retardant and a compatilizer in a weight ratio of (36-79.2):(10-30):(5-15):(5-10):(0.5-5). The preparation method comprises the following steps: uniformly mixing the raw materials by corresponding weight; and sequentially fusing, blending, extruding, bracing, cooling, dicing and drying. By using basalt fibers as a reinforcing material and hypophosphite and the nitrogen-containing flame retardant as a halogen-free flame retardant, the composite material is applied to modifying polylactic acid, so that the material is endowed with characteristics of excellent flame retardance, good mechanical property, environmental friendliness and the like. The composite material provided by the invention is simple in preparation process, low in cost and environment-friendly, can be used for overcoming the defects that the conventional polymer flame retardant modifying technology is poor in flame retardance, poor in mechanical property, great in environmental hazards and the like and has broad market application prospect.

The invention relates to a rotating disc type automatic basalt fiber feeding device. The automatic basalt fiber feeding device comprises a feeding disc and further comprises at least two basalt fiberbag conveying mechanisms used for conveying basalt fiber bags with different weights correspondingly, wherein the basalt fiber bag conveying mechanisms comprise elevators, and the elevators are arranged in the circumferential direction of the feeding disc at intervals; the rotating disc type automatic basalt fiber feeding device further comprises one first pushing mechanism used for pushing the basalt fiber bags on the corresponding elevators to the feeding disc, and the first pushing mechanism is arranged on the feeding disc; and the rotating disc type automatic basalt fiber feeding device further comprises a second pushing mechanism arranged corresponding to a feeding opening of a concrete mixer, and the second pushing mechanism is used for pushing the basalt fiber bags conveyed by the feeding disc in a rotating mode to the feeding opening of the concrete mixer from the feeding disc. The rotating disc type automatic basalt fiber feeding device solves the technical problem that in theprior art, the labor intensity is high when basalt fibers are manually added.

The invention relates to a bulletproof plate made of carbon fiber composites and a method for manufacturing the bulletproof plate. The bulletproof plate comprises a rigid face layer, a face layer connecting transition layer, an energy absorption layer, a back layer connecting transition layer and a rigid back layer which are formed by means of hot pressing. The rigid face layer is made of carbon fiber resin-based composites; the face layer connecting transition layer and the back layer connecting transition layer are made of prepreg, and energy absorption fibers and carbon fibers with immersed thermosetting resin are braided to form the prepreg; multilayer plates made of energy absorption fiber-reinforced composites are pressed to form the energy absorption layer; toughened and modified thermosetting resin and one type or a plurality of types of high-performance carbon fibers, basalt fibers and ceramic fibers are composited and pressed to form the rigid back layer. The bulletproof plate and the method have the advantages that the bulletproof plate is made of multilayer composite materials, can effectively resist impact force of bullets and is light as compared with the traditional bulletproof materials, and the bullet penetration depths can be effectively reduced.