ITPS20080022A1 - PROCESS TO OBTAIN THERMOACOUSTIC INSULATING MATERIAL AND FIRE BARRIER FOR CONTINUOUS NAVAL OR CONSTRUCTION BUILDINGS WITH HIGH VERTICAL DEVELOPMENT. ITEMS WITH IT OBTAINED. - Google Patents

Description

PROCESS TO OBTAIN CONTINUOUS THERMAL-ACOUSTIC INSULATING MATERIAL AND FIRE BARRIER FOR NAVAL CONSTRUCTION OR BUILDING WITH HIGH VERTICAL DEVELOPMENT.

ITEMS OBTAINED WITH IT.

The present found? a further development of the process and of the machine indicated in our previous patent application filed on 26 / July / 2008 with number PS2008A000018.

The car ? characterized by the fact of dosing a uniform layer of dry or encapsulated particles of organic or inorganic binder, with high viscosity, extracted from a non-adherent carpet, which at level extracts continuously, through an adjustable transversal slot, placed at the base of a drawer in the running direction; on the draining stratification, preferably constituted by particles of 2-4 mm, a two-component organic or inorganic low viscosity is dispensed with a dispenser placed in transversal movement, from above; a continuous press consisting of two flexible planes closed in a ring, the upper of which? inclined in the direction of travel, it determines the caliber of the stratification; the bed of calibrated particles continues in a ventilated or microwave oven to receive the heat necessary for the crosslinking of the binder; a running cut of the hardened stratification determines the length of the panel.

The car ? equipped with devices for unwinding materials in coils both below and above the stratification and devices for lateral containment of the mixture.

The purpose of this gimmick? that of obtaining from the same machine with appropriate small variations a new process aimed at obtaining a panel of light material, fire-retardant thermal and acoustic insulation, fire barrier, resistant to washout, which subsequently coated with thin laminates can be used in shipbuilding, or can be used as it is in building with high vertical development, replacing rock wool.

The variant of the machine consists in the displacement of the dispensing device in transversal movement placed above the bed of draining particles, after the press or the calibration roller, and in providing a self-detaching conveyor belt consisting of a Teflon glass net at the below which there are two collection and recycling tanks, in the first the solution of calcium chloride or magnesium, in the second washing water; a further modification consists in subsequently equipping a drip tray with forced air blades before drying in a ventilated oven or microwave.

The machine, on said, forms a uniform layer of porous expanded glass particles or other light inorganic material, encapsulated with sodium silicate solution at 38-40? B ?, how? available from the market, preferably using the continuous mixer, made mobile in translation on the forming drawer by re-feeding the dry expanded porous glass particles by means of a flexible motorized screw, with inverter to control the flow rate.

The same training drawer, where at the base? equipped with transversal opening adjustable in height,? equipped inside with mixing vanes to keep the mass of particles encapsulated with sodium silicate in motion.

At the base, the conveyor belt for the mixture extracts the mixture at level, which is calibrated with a continuous press consisting of two flexible surfaces closed in a ring whose upper? inclined in the direction of travel, or by a single large diameter roller.

The calibration roller of the mixture? equipped with scraper blade and abutment stiffener roller to contain water or ethanol so as to always have the surface of the roller covered with a veil of solvent to keep it clean and non-compliant with the particles encapsulated with sodium silicate.

The mixture, deposited and calibrated, on the non-fitting conveyor belt consisting of a network of Vetroteflon, in turn supported by rollers or perforated stainless steel plate, passes under the oscillating dispenser or a series of dispensers, which distribute an abundant shower of solution to 30-35? B? of calcium chloride, which crosses the draining layer of particles encapsulated with sodium silicate.

Below the drainage mat? placed a collection tank for the recycling of the calcium chloride solution.

The simple contact with the solution d? calcium chloride instantly transforms soluble sodium silicate into insoluble calcium silicate.

Alternatively, potassium silicate can also be used for encapsulation and magnesium chloride for the shower.

The belt continues and crosses a second collection and recycling tank where above a further oscillating dispenser or a series of dispensers distribute on the continuously formed panel of porous expanded glass particles bound with calcium silicate or magnesium, a rain of water to remove the residues of excess calcium or magnesium chloride and sodium chloride formed.

After a dripping path with forced ventilation, the panel is cut on the run and sent to the horizontal or vertical ventilated drying oven.

The treatment with calcium or magnesium chloride makes the panel resistant to water as well as increasing the resistance to fire; in fact if the glass particles would have been bound by the simple removal of the water from the sodium silicate solution, they would not be resistant to water washout and the expanded glass that melts at 900 ° C could not be contained by the softened outer layer of sodium silicate which melts at 1080 ° C.

In contrast, the shell formed around the expanded glass particles, consisting of calcium silicate, which melts at 1540 ° C, contains at the temperature indicated for the test? B15 ?, the molten glass, which by subsequent cooling maintains the original structure without collapsing.

Preferably to obtain a density? of the dried panel around 270 kg / m3, 54.5% by weight of 2-4 mm granulometry expanded porous glass particles must be mixed with 45.5% by weight of sodium or potassium silicate at 38- 40? B ?, an increase in the percentage of the silicate solution, or in the concentration, leads to a gradual increase in density.

The solution of calcium or magnesium chloride can? also be used in lower concentrations.

The same process? it can also be used with other light inorganic materials as an alternative to porous expanded glass, to obtain thermoacoustic insulating panels, such as for example particles of Vermiculite, Perlite, Pumice, Expanded Clay.

The same process? feasible also with other light organic materials to obtain thermoacoustic insulating panels, such as for example hemp wood particles or Kenaf as they come from scutching, pine bark particles, cork particles, or waste materials of? agriculture in particular, or after having needled the natural fibers of Hemp or Kenaf with splashes of sodium or potassium silicate to replace the polyester, with the subsequent shower, on the mattress of draining fibers, with Calcium or Magnesium Chloride, they get fire-resistant thermoacoustic insulating mats.

The formation of calcium or magnesium silicate mineralizes organic particles or fibers and makes them resistant to fire for uses similar to rock wool.

In all cases, the panel can? be equipped at the same time, above and below, with a glass net or other fibers unwound from coils and treated with sodium or potassium silicate, making them pass through an obligatory path in a tank containing the solution.

With a simple small variant to the machine referred to in the patent application for industrial invention N? PS2008A00001 8, by first calibrating the layer of draining particles encapsulated in sodium or potassium silicate solution and using the dispensing device, placed above, to deliver the calcium or magnesium chloride solution, we obtained a new process and a new interesting product able to replace the rock wool in the dividing walls of the cabins of the ships.

The lightweight panel being rigid,? can be coated with 4/10 metal laminates instead? 7/10 or more. used in contrast to sandwic with rock wool, lowering the weight that could lead to the construction of an additional passenger deck in a cruise ship.

Another advantage of our panel, on the rock wool panel used in shipbuilding, on the contrary? what, for the stresses and vibrations to which? subject the ship from the sea not? subject to compacting, leaving the upper part of the partition walls unprotected, especially in the demolition phase at the end of the year, does not determine the danger? of the rock wool fibers, already suspected? from today to be carcinogenic.

The same process also leads to the formation of new insulation materials obtained by conglomerization and mineralization of light inorganic particles and very light wood particles of Hemp or Kenaf or of waste products of Food or non-Food agriculture, and to the formation of mats. insulating and fireproofing of natural fibers.

Claims (1)

CLAIMS: 1 - S? claims the continuous process of forming very light panels, thermo-acoustic insulation, entirely inorganic, fireproof, fire barrier? B 15? for shipbuilding, starting from porous expanded glass particles, of the commercial type? Poraver? of particle size from about 2 to 4 mm, previously encapsulated, in a continuous or batch mixer, with a sodium or potassium silicate solution at 38-40? B ?, how? available from the market or at different suitable concentrations, poured into a formation drawer fitted inside with mixing blades, at the base of which a draining and non-fitting carpet extracts a uniform layer of the same through a slot transversal to the direction of travel. after calibration with large diameter rollers or flexible surfaces closed in a ring, whose upper? inclined in the direction of travel, it is sprayed from above by a solution of calcium chloride or magnesium chloride which, passing through the draining stratification, transforms the sodium or potassium silicate into insoluble calcium or magnesium silicate, with consequent irreversible conglomerization of the particles; a subsequent rain of water removes the excess of calcium or magnesium chloride and the sodium chloride formed; forced dripping with an air knife, cutting in motion and total drying in a ventilated oven complete the process. 2 ? S? claims the process of the preceding claim with the replacement of the porous expanded glass with particles of other light inorganic materials, such as for example Vermiculite, Pumice, Perl ite, Expanded Clay. 3 - The process referred to in the preceding claim n? 1 is claimed with the replacement of the particles of porous expanded glass with particles of very light wood of Hemp and Kenaf, as they come from scutching, or of other organic particles such as Cork, Pine bark, reed, straw or other waste materials of the? food or non-food agriculture, to obtain natural fire-resistant thermal and acoustic insulation panels. 4 - The process referred to in the preceding claim n? 1 is claimed with the replacement of the layer of draining glass particles, with a layer of natural organic fibers, hemp, kenaf, coconut, cotton, linen, jute, sheep's wool, o cellulose fibers from recycled paper, polylactic acid fibers, previously needled in line with splashes of sodium or potassium silicate solution, to obtain draining mats, thermoacoustic solvents, fire resistant. 5 - Is it claimed in the process referred to in the previous descriptions and claims, the? incorporation on the external surfaces of one or two glass nets or other organic or inorganic fibers, natural or not, making them pass compulsorily in a tray of sodium or potassium silicate solution during its development and before coupling with the stratification d? particles. 6 - In the process, as per the preceding claims, the use is claimed of a stiffener roller against the gauge roller or the upper inclined flexible plane, to lay a veil on the surface in contact with the encapsulated silicate particles. of solvent, water or ethanol, to make it non-compliant. 7 - Is it claimed in the process referred to in the preceding claims, the use d? a non-fitting and draining conveyor belt such as a Teflon-Glass mesh. 8 - Are the products obtained with the process referred to in the preceding claims n? 1, n? 2, n? 3, n? 4, n? 5.