Fire-retardant material, flameproof enclosure, fireproof lampshade and preparation method thereof
Technical field:
The invention belongs to Building Fire Protection material field, be specifically related to a kind of fire-retardant material and utilize this fire-retardant material to produce flameproof enclosure, fireproof lampshade and preparation method thereof.
Background technology:
Use the top ceiling furred ceiling to do to decorate in modern industry and the covil construction and get more and more, a kind of especially inexorable trend of low-voltage energy-saving lamp is installed in perforate on top ceiling; But this will bring bigger disaster hidden-trouble: on the one hand, the low-voltage energy-saving lamp transformer works long hours, if heat radiation is bad, and energy accumulation, temperature rises, and easily causes appliance fire; On the other hand, the fire endurance of top ceiling furred ceiling was greater than 1 hour, and the fire performance of low-voltage energy-saving lamp does not reach requirement.In case presence of fire, flare will be scurried the upper space of top ceiling by the open holes of low-voltage energy-saving lamp, thereby form chimneyeffect, and the intensity of a fire heightens, and causes bigger destruction.
Design a kind of flameproof enclosure the transformer of low-voltage energy-saving lamp and open holes are covered, just can solve this problem.Flameproof enclosure can be ventilated under normal service condition, and the thermal accumlation that does not cause low-voltage energy-saving lamp and transformer thereof to produce causes local temperature too high, initiation fire; But when fire takes place, the fire safety cover can expand rapidly again, tightly cover on low-voltage energy-saving lamp and the transformer thereof, form adiabatic sealing ply, put out the early stage flare on low-voltage energy-saving lamp and the transformer thereof, block the open holes of low-voltage energy-saving lamp simultaneously, the upside that stops flame to scurry top ceiling by open holes effectively causes bigger harm.
From the report literary composition of offering at present both domestic and external,, mainly contain following three kinds of product types in order to address the above problem:
The one, at rigid metal guard liner expanding material, but the metal guard does not have compression resilience, can't enter into the upper space of top ceiling from the open holes of low-voltage energy-saving lamp, has only predetermined fixed on the sheet material of perforate, and then the position of retaining plate, for installing and all very inconvenience of position adjustment.
The 2nd, on glasscloth, be coated with fire-proof dilatation, good flexibility is arranged, the upside space of top ceiling can be entered from the open holes of low-voltage energy-saving lamp, but, the fire endurance of top ceiling can't be reached because frie retardant coating is pasted by organism, and the fire rating time is short.
The 3rd, expanding material, fiber, binding agent, fillers etc. mix, and add to make the slurry that viscosity is big, solid content is lower in the entry, the flameproof enclosure that the method for employing vacuum filtering shape process is made.Great Britain patent GB2345125 is exactly a kind of patent documentation of according to said method producing, but the major defect of the flameproof enclosure that makes by this method has: the one, and fiber is shorter, bonding by organic adhesive, bulk strength is not high, meeting the caking agent inefficacy of fire back, because the convection action of warm air can be washed out the graphite fibre mixture after expanding, ventilating pit is difficult to sealed; The 2nd, organic film short period implosion behind the flameproof enclosure expanded by heating on surface causes the fire rating time short, is generally 30~60min, can't reach the fire rating time of top ceiling.
Summary of the invention:
The objective of the invention is in order to overcome the defective of prior art, for the public provides a kind of snappiness, rebound resilience good, the bulk strength height, the expansion multiplying power height, the fire endurance time is long, can effectively put out low-voltage energy-saving lamp and transformer incipient fire thereof, blocks its open holes simultaneously, prevent that flare from scurrying into the upside space of top ceiling and causing bigger harm, not only the fire-retardant material that economy but also performance are good, flameproof enclosure, fireproof lampshade and preparation method thereof.
The objective of the invention is to realize by following technical proposals:
Fire-retardant material of the present invention: according to the mass fraction, form by following component:
Expanding material 30~50, fiberfill fibers 30~50, filling powder 10~20, binding agent 5~10, hydrophober 0~2.
According to the mass fraction, component is formed preferred:
Expanding material 40~45, fiberfill fibers 40~45, filling powder 15~18, binding agent 8~10, hydrophober 0~0.2.
Above-mentioned:
Expanding material is one or more mixtures wherein such as expanded graphite, aqueous sulfuric acid aluminium; Fiberfill fibers is one or more mixtures wherein such as glass wool, rock wool, slag; Filling powder is one or more mixtures wherein such as titanium dioxide, limestone powder, wollastonite powder, talcum powder, wilkinite; Binding agent is one or more mixtures wherein such as vinylformic acid, polyvinyl alcohol, white glue with vinyl, neoprene latex, phenolic glue; Hydrophober is Union carbide A-162, wherein a kind of of isobutyl-triethoxyl silane, octadecyltriethoxy silane.
Above-mentioned expanded graphite has good rerum natura, does not expand when temperature is lower than 200 ℃, plays heat-blocking action, expands rapidly when temperature is higher than 250 ℃, and expansion multiplying power is greater than 150 times.
Above-mentioned starting material are pressed formula rate mix, add suitable quantity of water, make thick shape lotion, i.e. fire-retardant material by common stirring.This fire-retardant material unit weight is at 150~250kg/m
3, having great swelling property, expansion multiple can reach more than 10 times, and the combustion limits time surpasses 1 hour, and snappiness is good, and rebound resilience is good, and these base attributes for realizing purpose of the present invention, provide guarantee.Expansion multiple is that fire-retardant material is placed 900 ℃ of stoves, when material volume no longer changes, and calcining back and the preceding volume ratio of calcining.
Utilize above-mentioned fire-retardant material to prepare flameproof enclosure, fire prevention has the hole on the cover body, and glass fibre mat is an internal layer, and glasscloth be a skin, fireproof material layer is set inside and outside between two-layer.
Glass fibre mat thickness can be 0.1mm, 0.3mm, 0.5mm; Preferred 0.3mm, the thickness of glasscloth is 0.3mm, 0.5mm, 1.0mm.Glasscloth can be flat synthetic fibre cloth, oblique synthetic fibre cloth, cover synthetic fibre cloth, also can be grid cloth, the preferred 0.5mm of thickness.
The profile of flameproof enclosure can be cone, right cylinder, and rectangular parallelepiped etc., preferred profile is a cone shape, helps on the one hand it self support, also helps the installation of fireproof lampshade on the other hand, the back resilience is installed, and to return to the ability of design shape strong.
Hole count on the fire prevention cover body, be designed to one or more as requested, be passing through for electric wire, also be for ventilated, favourable heat radiation when normal the use can be not too high because of the bad local temperature that causes of heat radiation, when fire takes place, fire-retardant material can be blocked these holes safely again after expanding, and spreads with the cloth that advances that stops the intensity of a fire.
The preparation method of flameproof enclosure is:
Preparation flameproof enclosure conical die, glass fibre mat 2 tapers of cutting out are launched to be trapped among on the conical die of corresponding specification, butt joint or overlap joint, open the vacuum suction filter device, with the evenly coating on glass fibre mat 2 of above-mentioned thick shape lotion fire-retardant material 4, thickness 5~the 10mm of coating layer covers layer of glass cloth 3 again, and glasscloth should overlap.The demoulding drying, treat complete drying after, be coated with one deck moisture-proof barrier again.
Above-mentioned moisture-proof barrier is: acrylate paint
The purpose that is coated with moisture-proof barrier is to prevent the invasion and attack of wet air, and the surface is also smooth.Increase the service life.
Utilize flameproof enclosure to produce fireproof lampshade: it mainly comprises spacer 6, above-mentioned flameproof enclosure 7, and spacer 6 is connected with the upper end of flameproof enclosure 7, and is useful on and the extraneous connecting pin 8 that is connected and fixed in flameproof enclosure 7 lower ends.
The fire-retardant material that technical scheme of the present invention makes, the technological merit that flameproof enclosure and fireproof lampshade thereof bring is: economic environmental protection, starting material are easy to get, and all can buy in the material requested city, and manufacture craft is simple, easy handling.Fireproof lampshade has unit weight at 150~250kg/m
3, expansion multiple can reach more than 10 times, and the combustion limits time surpasses 1 hour, the bulk strength height, snappiness is good, and rebound resilience is good, not cracky.Has extremely strong fire line.Simultaneously; when fire takes place; because outermost layer is the high glasscloth of intensity; fire-retardant material can only expand to inside, covers tightly on low-voltage energy-saving lamp and the transformer thereof and forms heat-insulating protective layer, puts out early stage flare; and the transmission of prevention heat; and can block the open holes of low-voltage energy-saving lamp, and stop flare to scurry into the upside space of top ceiling, cause bigger harm.
Description of drawings:
Fig. 1 is a flameproof enclosure structural representation of the present invention.
Fig. 2 is the I partial enlarged drawing of Fig. 1.
Fig. 3 is a fireproof lampshade structural representation of the present invention.
Embodiment:
Below in conjunction with accompanying drawing and by specific embodiment purpose of the present invention is further described, but purpose of the present invention is not limited thereto.
Embodiment 1:
Fire-retardant material: according to the mass fraction, take by weighing:
Expanded graphite 60g
Glass wool 40g
Rock wool 40g
Titanium dioxide 20g
Wilkinite 20g
Acid polyethylene 16g
Union carbide A-162 2g
Above-mentioned formula material is put into a mixing tank, add suitable quantity of water, make thick shape lotion fire-retardant material through stirring.
The fire-retardant material expansion multiple that this prescription is produced is up to 10 times, and fire endurance 70 minutes produces, product bulk strength height, and toughness, rebound resilience is good, not cracky.
Embodiment 2:
Fire-retardant material according to the mass fraction, takes by weighing
Expanded graphite 30
Aqueous sulfuric acid aluminium 10
Glass wool 10
Rock wool 20
Titanium dioxide 10
Lime powder 10
White glue with vinyl 8.6
Isobutyl-triethoxyl silane 0.5
The fire-retardant material expansion multiple that this prescription is produced is 12 times, and the fire endurance time is 80 minutes, the bulk strength height, and snappiness, rebound resilience are all good, not cracky.Making processes is identical with embodiment 1.
Embodiment 3:
Fire-retardant material: according to the mass fraction, take by weighing
Expanded graphite 20
Aqueous sulfuric acid aluminium 20
Mineral wool 20
Rock wool 20
Talcum powder 10
Limestone powder 5
Neoprene latex 4
The fire-retardant material expansion multiple that this prescription is produced is 8 times, and the fire endurance time is 60 minutes, the bulk strength height, and pliable and tough strong, rebound resilience is all good.Making processes is identical with embodiment 1.
Embodiment 4:
Flameproof enclosure and preparation method;
Making earlier the conical die of flameproof enclosure, is that glass fibre mat 2 tapers of 0.3mm launch to be trapped among on the conical die of corresponding specification with the thickness of cutting out, and adopts butt joint, open the vacuum suction filter device, use embodiment, preparation fire-retardant material 4 is evenly coating on glass fibre mat 2, and the thickness of coating is 8mm, cover layer of glass plain 3 again, glasscloth should overlap, and demoulding drying is treated to dry fully or automatic drying, be coated with one deck moisture-proof barrier 5 after the drying again, at last in flameproof enclosure vertex of a cone perforate 1.
Embodiment 5:
Flameproof enclosure and preparation method
On the basis of the flameproof enclosure of embodiment 4, on the flameproof enclosure sidewall, open pore 1 again.
Embodiment 6:
Flameproof enclosure and preparation method
Make the conical die of flameproof enclosure earlier, with the thickness of cutting out is that glass fibre mat 2 tapers of 0.5mm launch to be trapped among on the conical die of corresponding specification, adopt overlap joint, open vacuum apparatus, the fire-retardant material made from embodiment 24 evenly is coated with on glass fibre mat 2, the thickness of coating is 4mm, cover the thick glass fibre mat of one deck 0.3mm 2 again, the fire-retardant material made from embodiment 24 evenly is coated with on this layer glass fibre mat 2, the thickness of coating layer is 4mm, cover the glass fibre plain 3 of one deck 0.5mm thickness again, the glass fibre plain should overlap, the demoulding drying, after treating complete drying, be coated with last layer moisture-proof barrier 5 again, at last perforate 1 on perforate 1 of the flameproof enclosure vertex of a cone and cone-shaped body.
Embodiment 7:
Fireproof lampshade and preparation method
As shown in the figure, with flameproof enclosure 7 upper ends of garden, set spacer 6 upper end shape snare at embodiment 6, spacer 6 peripheral shape that is connected with flameproof enclosure 7 mates mutually, both firmly connect, the spacer lower end is pierced in the flameproof enclosure 7 from its symmetric radially two ends, the symmetric support pin that extends downwards is L shaped again stretches out from flameproof enclosure 7 lower ends, becomes and the extraneous connecting pin 8 that is connected and fixed as top ceiling or body of wall.