A pyrophosphate-free mixture with fire retardancy, including a mixture of non-polymer organic components, wherein at least a first compound of the mixture acts as a hydrogen-bridge donor and at least a second compound of the mixture acts as a hydrogen-bridge acceptor. The disclosure also relates to a method for preparing the fire-retardant mixture and to the use thereof as a fire retardant in extinguishing forest fires.

A pyrophosphate-free mixture with fire retardancy, including a mixture of non-polymer organic components, wherein at least a first compound of the mixture acts as a hydrogen-bridge donor and at least a second compound of the mixture acts as a hydrogen-bridge acceptor. The disclosure also relates to a method for preparing the fire-retardant mixture and to the use thereof as a fire retardant in extinguishing forest fires.

Disclosed is a flame retardant composition including: (A) 20 to 50 parts by mass of at least one melamine salt selected from the group consisting of melamine orthophosphate, melamine pyrophosphate, and melamine polyphosphate; (B) 50 to 80 parts by mass of at least one piperazine salt selected from the group consisting of piperazine orthophosphate, piperazine pyrophosphate, and piperazine polyphosphate (with the proviso that the total of component (A) and component (B) is 100 parts by mass); (C) 0.01 to 5.0 parts by mass of a silane coupling agent; and (D) 0.01 to 1.0 part by mass of an aliphatic dicarboxylic acid ether ester compound represented by general formula (1). The details of general formula (1) are as described in Description.

Disclosed is a flame retardant composition including: (A) 20 to 50 parts by mass of at least one melamine salt selected from the group consisting of melamine orthophosphate, melamine pyrophosphate, and melamine polyphosphate; (B) 50 to 80 parts by mass of at least one piperazine salt selected from the group consisting of piperazine orthophosphate, piperazine pyrophosphate, and piperazine polyphosphate (with the proviso that the total of component (A) and component (B) is 100 parts by mass); (C) 0.01 to 5.0 parts by mass of a silane coupling agent; and (D) 0.01 to 1.0 part by mass of an aliphatic dicarboxylic acid ether ester compound represented by general formula (1). The details of general formula (1) are as described in Description.

Provided is a multi-functional plugging agent for a coal mine and a preparation method thereof. The preparation method comprises: by taking Ecklonia Kurome Okam as a raw material, mixing an Ecklonia Kurome Okam suspension with phosphorus pentoxide for reaction, then performing biodegradation to obtain an Ecklonia Kurome Okam biological extract, adding urea for neutralization, mixing a neutralization product with an inorganic catalyst and melamine for reaction to obtain a bio-based plugging synergist solution, finally cooling the bio-based plugging synergist solution, and mixing the cooled bio-based plugging synergist solution with a certain amount of pentaerythritol and ammonium polyphosphate to obtain the multi-functional plugging agent for the coal mine based on the Ecklonia Kurome Okam biological extract. According to the invention, not only a coal crack can be effectively plugged for a long time, but also an efficient flame-retardant effect can be achieved in a complete period of coal spontaneous combustion.

Provided is a multi-functional plugging agent for a coal mine and a preparation method thereof. The preparation method comprises: by taking Ecklonia Kurome Okam as a raw material, mixing an Ecklonia Kurome Okam suspension with phosphorus pentoxide for reaction, then performing biodegradation to obtain an Ecklonia Kurome Okam biological extract, adding urea for neutralization, mixing a neutralization product with an inorganic catalyst and melamine for reaction to obtain a bio-based plugging synergist solution, finally cooling the bio-based plugging synergist solution, and mixing the cooled bio-based plugging synergist solution with a certain amount of pentaerythritol and ammonium polyphosphate to obtain the multi-functional plugging agent for the coal mine based on the Ecklonia Kurome Okam biological extract. According to the invention, not only a coal crack can be effectively plugged for a long time, but also an efficient flame-retardant effect can be achieved in a complete period of coal spontaneous combustion.

To provide a flame retardant resin composition having excellent flame retardancy and excellent resin physical properties.

There is provided a flame retardant resin composition, including: an aromatic polycarbonate resin; an inorganic filler; a phosphate ester flame retardant; an organic sulfonic acid flame retardant; a drip preventing agent; and a polyorganosiloxane-containing graft copolymer, in which a content of the aromatic polycarbonate resin is 40 to 95 pts.Math.mass to 5 to 60 pts.Math.mass of the inorganic filler, and a content of the phosphate ester flame retardant, a content of the organic sulfonic acid flame retardant, a content of the drip preventing agent, and a content of the polyorganosiloxane-containing graft copolymer are respectively 1 to 30 pts.Math.mass, 0.01 to 2.5 pts.Math.mass, 0.05 to 1.5 pts.Math.mass, and 0 to 10 pts.Math.mass to the total 100 pts.Math.mass of the aromatic polycarbonate resin and the inorganic filler.

Provided is a multi-functional plugging agent for a coal mine and a preparation method thereof. The preparation method comprises: by taking Ecklonia Kurome Okam as a raw material, mixing an Ecklonia Kurome Okam suspension with phosphorus pentoxide for reaction, then performing biodegradation to obtain an Ecklonia Kurome Okam biological extract, adding urea for neutralization, mixing a neutralization product with an inorganic catalyst and melamine for reaction to obtain a bio-based plugging synergist solution, finally cooling the bio-based plugging synergist solution, and mixing the cooled bio-based plugging synergist solution with a certain amount of pentaerythritol and ammonium polyphosphate to obtain the multi-functional plugging agent for the coal mine based on the Ecklonia Kurome Okam biological extract. According to the invention, not only a coal crack can be effectively plugged for a long time, but also an efficient flame-retardant effect can be achieved in a complete period of coal spontaneous combustion.

Provided is a multi-functional plugging agent for a coal mine and a preparation method thereof. The preparation method comprises: by taking Ecklonia Kurome Okam as a raw material, mixing an Ecklonia Kurome Okam suspension with phosphorus pentoxide for reaction, then performing biodegradation to obtain an Ecklonia Kurome Okam biological extract, adding urea for neutralization, mixing a neutralization product with an inorganic catalyst and melamine for reaction to obtain a bio-based plugging synergist solution, finally cooling the bio-based plugging synergist solution, and mixing the cooled bio-based plugging synergist solution with a certain amount of pentaerythritol and ammonium polyphosphate to obtain the multi-functional plugging agent for the coal mine based on the Ecklonia Kurome Okam biological extract. According to the invention, not only a coal crack can be effectively plugged for a long time, but also an efficient flame-retardant effect can be achieved in a complete period of coal spontaneous combustion.

To provide a flame retardant resin composition having excellent flame retardancy and excellent resin physical properties. There is provided a flame retardant resin composition, including: an aromatic polycarbonate resin; an inorganic filler; a phosphate ester flame retardant; an organic sulfonic acid flame retardant; a drip preventing agent; and a polyorganosiloxane-containing graft copolymer, in which a content of the aromatic polycarbonate resin is 40 to 95 pts.mass to 5 to 60 pts.mass of the inorganic filler, and a content of the phosphate ester flame retardant, a content of the organic sulfonic acid flame retardant, a content of the drip preventing agent, and a content of the polyorganosiloxane-containing graft copolymer are respectively 1 to 30 pts.mass, 0.01 to 2.5 pts.mass, 0.05 to 1.5 pts.mass, and 0 to 10 pts.mass to the total 100 pts.mass of the aromatic polycarbonate resin and the inorganic filler.