CN2361712Y

CN2361712Y - Light pearlite insulating board

Info

Publication number: CN2361712Y
Application number: CN 98251894
Authority: CN
Inventors: 杜国良
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-12-25
Filing date: 1998-12-25
Publication date: 2000-02-02
Anticipated expiration: 2008-12-25

Abstract

The utility model relates to a light pearlite insulating board which belongs to heat preservation and thermal insulation materials in the construction engineering. The utility model comprises a pearlite board and an enwrapping layer, wherein the pearlite board is formed by the compression of pearlite bulk materials according to the compression volume ratio of 1.75: 1 to 2: 1. The enwrapping layer is paper with good retractility and flexibility. The enwrapping layer is stuck on the surface of the pearlite board by adhesive, and the pearlite board is completely enwrapped. The utility model has the advantages that the good heat preservation and thermal insulation property and low volume weight of the pearlite bulk materials are kept; compression strength is good; the integration is smooth; the external shape is standard. The range of application of the pearlite materials is enlarged.

Description

Light-duty pearlite heat-insulation plate

The utility model relates to a kind of light-duty pearlite heat-insulation plate, belongs to the construction work heat preserving and insulating material.

The perlite bulk cargo has excellent heat insulation performance, and very wide thermal insulation accommodation is arranged, and unit weight is lower than 80Kg/m ³, the normal pressure coefficient of thermal conductivity occupies very big proportion less than 0.045W/m.k in the building heat preservation heat-barrier material.Though the perlite bulk cargo has so good performance, but can not directly use as heat insulating material.At present, the way of the thermal insulation layer of the building roofing of brick concrete structure is cement perlite mixture (the claiming perlite concrete again) in-situ casting with 1: 10.Specific practice is in cement and 1: 10 ratio mix of perlite bulk cargo, adds the artificial on-the-spot system of clapping of water, and thickness is manufactured by designing requirement.On-the-spot process of mixing the system of bat causes perlite bulk cargo particle and dust elegant with the wind, and waste of material is very big, and the system of mixing is inhomogeneous, and thickness is difficult to control, and environmental pollution is serious, the perlite concrete intensity of this in-situ casting is very low, is lower than 0.2Mpa, and unit weight is higher than 300Kg/m ³, the normal pressure coefficient of thermal conductivity is higher than 0.09W/m.k.In addition, usually be designed with construction department ignores be: make ready-made this perlite concrete, through on the thermal insulation layer, also making the leveling layer of 20～30mm after the maintenance of 1: 3 cement mortar.And this perlite concrete is also keeping the attribute of perlite self---water imbibition.The water absorption rate of perlite concrete at this moment can surpass 30% of deadweight, that is to say that it will adsorb cement paste in the leveling layer, this has just increased the unit weight of former design insulation layer again, strengthened coefficient of thermal conductivity, reduced the effect of thermal insulation layer, the excellent heat insulation performance that makes the perlite bulk cargo be had is difficult to embody, and particularly the roofing load for large span, highrise building obviously increases.Therefore, this aspect heat preserving and insulating material is very undesirable.Certainly, the perlite bulk cargo can be by mixing with bonding agents such as cement, water glass, 107 glue, be easy to be shaped, make the heat insulating material of all size shapes such as brick, plate, but the unit weight of manufactured goods, these two important performance indexes of normal pressure coefficient of thermal conductivity all increase thereupon, and range of application also is restricted, very far away with the premium properties difference of perlite bulk cargo.

The purpose of this utility model provides a kind of deficiency that had both overcome prior art, can give full play to the thermal and insulating performance of the good property of perlite bulk cargo again, and unit weight is low, and intensity is good, light-duty pearlite heat-insulation plate applied widely.

The purpose of this utility model is realized by following mode:

The utility model comprises pearlite slab and integument, pearlite slab is by the perlite bulk cargo, by 1.75: 1～2: 1 minimum cylinder volumes than compacting and, integument is to have good retractility and flexible paper, integument is pasted on the surface of pearlite slab with bonding agent, and pearlite slab is all wrapped up.

For waterproof, protection against the tide, the antiseptic property that improves manufactured goods, brushing one deck water-repellent paint layer equably on the surface of integument.

The utility model has the advantages that and solved the moulding problem of perlite bulk cargo under the situation that does not add any additives or bonding agent well, the excellent heat insulation performance and the low characteristic of unit weight that have kept the perlite bulk cargo to be had fully, and compressive strength is better, overall leveling, appearance and size, corner angle limit standard has increased the scope of application of perlite material.

The utility model will be further described below in conjunction with accompanying drawing:

Fig. 1 is a structural representation of the present utility model;

With reference to accompanying drawing, the utility model includes pearlite slab [3] and integument [2], and pearlite slab [3] is by through selected perlite bulk cargo, than 1.75: 1, is 0.2Mpa/m in the unit pressure value according to minimum cylinder volume ²Condition under suppress and form.The compressive strength of the pearlite slab after the compression moulding [3] is also lower, 0.15Mpa is only arranged, for improving its bulk strength, the magma kraft that adopts 70g～80g is as integument [2], with 107 glue of low viscosity (water content is big) as bonding agent, brushing is in a side of integument [2], be pasted on the surface of pearlite slab [3] again, and pearlite slab [3] all wrapped up, mouth is sealed with full-bodied bonding agent or water glass at sealing part, carry out low temperature drying (but also air dry), because of the dried contraction of integument [2], the pearlite slab [3] of compression moulding is stretched tight wraps tightly, and at this moment the entire compression intensity of sheet material can increase to 0.4Mpa, for improving the waterproof of manufactured goods, moistureproof, antiseptic property, at external surface brushing one deck water-repellent paint layer [1] of integument [2], water-repellent paint layer [1] can adopt pitch to manufacture, and the pitch prescription is: petroleum bitumen 1/3, tar drop table 2/3, the oil temperature control is between 180 ℃～200 ℃, with scalding oily machine brushing.Pearlite heat-insulation plate after waterproofing work, surfacing light, flexible, the unsuitable embrittlement of waterproofing course through test, is immersed the utility model in the water breakage was not taken place in 48 hours; Immerse in 5% the acid-base solution efflorescence, breakage did not take place in 24 hours.

Claims

1, a kind of light-duty pearlite heat-insulation plate, comprise pearlite slab and integument, it is characterized in that pearlite slab is by the perlite bulk cargo, form than compacting by 1.75: 1～2: 1 minimum cylinder volumes, integument is to have good retractility and flexible paper, integument is pasted on the surface of pearlite slab with bonding agent, and pearlite slab is all wrapped up.

2, warming plate according to claim 1 is characterized in that described integument adopts the magma kraft of 70 grams to 80 grams.

3, warming plate according to claim 1 and 2 is characterized in that external surface at integument is coated with equably to be brushed with one deck water-repellent paint layer.

4, warming plate according to claim 3 is characterized in that the water-repellent paint layer can adopt pitch to manufacture.