34results about How to "Extended fire protection time" patented technology

The invention discloses a modified nano aluminium hydroxide water expansion type overcoating fire retardant paint and a preparation method thereof. The paint is prepared from the following raw materials in percentage by weight: 22%-28% of organic silicon modified styrene-acrylate emulsion, 13%-17% of mixture of anatase type titanium dioxide and modified nano aluminium hydroxide powder, 16%-19% of ammonium polyphosphate, 8%-13% of tripolycyanamide, 5%-9% of pentaerythritol, 3%-7% of auxiliary and 21%-27% of water; and the modified nano aluminium hydroxide is prepared from the raw materials in parts by weight: 60-85 parts of nano aluminium hydroxide powder, 0.8-2.5 parts of sodium hexametaphosphate powder and 18-24 parts of water. The paint is a water system having obvious inflaming retarding effect, high fireproof performance, good brushing resistance, weather resistance and smearing hardness and low fuming amount, and has the beneficial effects of simple production process, good dispersing effect, low cost, stable quality and long service life, and is energy-saving and environment-friendly.

The invention discloses a self-closing fire door which comprises a door frame, wherein a partition board is fixedly connected to the middle of the door frame; door panels are mounted on two sides of the partition board; a gas storage tank is fixedly connected to the middle of the partition board in a sleeving manner; gas pipes communicating with the gas storage tank are mounted on two sides of thepartition board; an adjustment mechanism is mounted on the top of the gas pipes; the output end of the adjustment mechanism is connected with a connecting pipe of a ring structure arranged around theinner ring of the door frame; gas ejection pipes fixedly connected to the door panels in a sleeving manner are mounted at the sides, away from the partition board, of the connecting pipe; the adjustment mechanism comprises a heat conducting rod fixedly connected to the door panels in a sleeving manner; the outer ring of the heat conducting rod is fixedly sleeved with a housing with an opening atthe top; and a sleeve is movably connected to the opening at the top of the housing in a sleeving manner. The self-closing fire door is simple in structure and convenient to operate, and can automatically eject liquid carbon dioxide to extinguish the fire and lower the temperature for the fire door and surroundings of the fire door without the need for an external control installation in the eventof a fire, thereby effectively improving the fire prevention function and fire prevention time of the fire door.

The invention discloses an environment-friendly structured water-based intumescent fireproof coating. The components and their mass percentages include: 20-30% of acrylate-based emulsion, 30-36% of melamine-formaldehyde resin microencapsulated ammonium polyphosphate %, expandable graphite 20-30%, ascorbic acid 1-10%, sepiolite powder 1-10%, hydroxyethyl cellulose 0.5-1%, dispersant 0.5-1%, defoamer 0.5-1%, positive Octanol 0.5-1%, the rest is water. In the present invention, by simultaneously introducing ascorbic acid and sepiolite powder into the expandable graphite-based intumescent fireproof coating, the synergistic effect of the gas phase and solid phase of the two can significantly improve the fireproof performance, aging resistance, acid and alkali resistance and resistance of the intumescent fireproof coating obtained. Pollution performance and other performance; and the construction preparation involved is simple, the fire prevention effect is excellent, the environment is friendly, and it is suitable for popularization and application.