The invention relates to a flame-retardant composite material floor board as well as a preparation method thereof, and belongs to the technical field of composite material floor boards The floor board has a sandwiched structure, and comprises skin, a core material as well as flame-retardant structure glue for bonding the skin and the core material; the material of the skin is continuous fiber reinforced epoxy resin prepreg; the material of the core material is aramid fiber honeycomb; the flame-retardant structure glue is epoxy resin According to the invention, the fiber material prepreg which is prepared from halogen-free flame retardant and toughening modified epoxy resin acts as the material of the skin, so that the sandwiched layer structure composite material has a favorable flame-retardant effect, and the excellent mechanical performance of shock resistance, bending and pressing resistance, abrasion resistance and the like of epoxy materials are kept for the material

Flame-retardant composite material floor board as well as preparation method thereof

The invention belongs to composite material forming technologies and relates to a method for manufacturing multi-directional laid composite material porosity detection comparison sample pieces. The method comprises the following steps: when composite material prepreg is laid, adding a solvent which is soluble with resin and can easily volatile among prepreg layers; when laid laminated boards are solidified, adjusting the pressure and the pressure time to form pores, and enabling the pores to be uniformly formed in the laminated boards so as to manufacture the comparison sample pieces meeting composite material laminated board porosity detection. According to the method, a conventional mode that porosity comparison sample pieces need to be accumulated in the long-term production process is changed, the uniformly distributed porosity detection sample pieces with the controllable porosity can be manufactured within a short time, and urgent demands of a new generation aircraft on a porosity detection technology are met.

Method for manufacturing composite material porosity detection comparison sample pieces

The invention belongs to the technical field of preparation of prepreg, and particularly relates to a flame-retardant and heat-resistant epoxy resin for self-adhesive prepreg. The resin for the prepreg consists of an epoxy resin mixture component A and a curing agent mixture component B. The epoxy resin mixture component A accounts for 50-80 parts by weight of the resin, and the curing agent mixture component B accounts for 10-40 parts by weight of the resin. The prepreg is prepared by a hot melt adhesive dipping reinforcing material of a composition; a composite material is formed by the prepreg. The viscosity of the prepreg is moderate, and the processability is good; the storage time at the normal temperature is 3 months. The prepreg can be cured completely within 2 hours at the temperature of 135 DEG C. The glass-transition temperature of the cured composite material is 180-210 DEG C; heat resistance and flame retardance of the composite material are good. The resin for the hot melting prepreg provided by the invention has been toughened and modified, the self-adhesive property of the prepreg is good, honeycombs can be adhered directly, adhesive films are not required, the process can be simplified, and the weight can be reduced.

Flame-retardant and heat-resistant epoxy resin for self-adhesive prepreg

The invention discloses a flame retardant carbon fiber prepreg, which includes a carbon fiber layer and flame retardant epoxy resin impregnated in the carbon fiber layer; and release paper directly attached to the outer surface of the carbon fiber layer In addition, the invention also discloses a hot melting two-step preparation method for the carbon fiber prepreg, and the method includes membrane preparation and preimpregnation The method provided by the invention is simple, the prepared flame retardant carbon fiber prepreg can have a very good flame retardant effect, and at the same time, the product also meets the demands (ROSH, Reach up to stand) of environmental protection products Thus, the flame retardant carbon fiber prepreg can be widely used in the electronics and other 3C product field so as to form lightweight, high strength and flame retardant carbon fiber products

Flame retardant carbon fiber prepreg and preparation method thereof

The invention relates to an impact-resistant and fireproof glass fiber reinforced phenolic aldehyde board and a preparation method thereof. The board adopts a laminating structure and is formed through hot pressing of multiple layers of prepregs according to the thickness of the board, wherein each prepreg comprises components in percentage by mass as follows: 65%-75% of fiber reinforced materials and 25%-35% of phenolic resin matrix; the phenolic resin matrix comprises components in parts by mass as follows: 100 parts of phenolic resin, 8-15 parts of a toughening agent, 5-10 parts of a fire retardant and 3-5 parts of a thickening additive. The impact resistance of the glass fiber reinforced phenolic aldehyde board is improved by more than 50% while compared with that of conventional phenolic resin based composite, the flame retardant property meets the requirements of CCAR25 and FAR25, particularly, the density of smoke produced after the board is burnt for 4 min is lower than 10, a preparation process is simple, the processing manufacturability and the economical efficiency are good, and the impact-resistant and fireproof glass fiber reinforced phenolic aldehyde board is particularly suitable for being used as a decorative liner plate to be mounted in cargo compartments of an airplane, a ship and a high-speed rail train.

Impact-resistant and fireproof glass fiber reinforced phenolic aldehyde board and preparation method thereof

The present invention relates to a flame retardant epoxy prepreg composite material and its preparation method and its use, the composite material contains 20 to 70% of epoxy resin matrix and 30-80% of fiber reinforced materials; wherein the epoxy resin matrix comprises the following components by mass part: 100 parts of an F type epoxy resin, 10-50 parts of an E type epoxy resin, 5-40 parts of tetrabromobisphenol A, 5-20 parts of a curing agent, 1-10 parts of a curing accelerator, 5-25 parts of a toughening agent, 1-10 parts of antimonous oxide and 20-80 parts of an organic solvent. According to the invention, F46 type epoxy resin containing a rigid frame structure is taken as a main component, the flame retarding and toughening modification are carried out on the resin matrix by a combination technology, the epoxy composite material with high toughness, high flame retardancy and good overlaying manufacturability can be realized, the flue gas density is obviously decreased when the flame is carried out, and the epoxy prepreg composite material possesses important popularization and application prospects in the fields of large aircraft, ships, high-speed rails and the like.

Flame retardant epoxy prepreg composite material and its preparing method and its use

Preparation method of high-toughness flame retardation phenolic prepreg composite material

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Flame retardant epoxy prepreg composite material and its preparing method and its use

Preparation method of high-toughness flame retardation phenolic prepreg composite material