CN101298515A - Polyurethane fireproof blocking material, preparation and use thereof - Google Patents
Polyurethane fireproof blocking material, preparation and use thereof Download PDFInfo
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- CN101298515A CN101298515A CNA2008101145676A CN200810114567A CN101298515A CN 101298515 A CN101298515 A CN 101298515A CN A2008101145676 A CNA2008101145676 A CN A2008101145676A CN 200810114567 A CN200810114567 A CN 200810114567A CN 101298515 A CN101298515 A CN 101298515A
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- fireproof blocking
- blocking material
- polyurethane fireproof
- polyurethane
- foaming
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Abstract
The invention discloses the preparation and application method of polyurethane fireproof blockage. The polyurethane fireproof blockage is made by the chemical reaction of multi-isocyanate and polyether polyol containing flame retardant. The preparation method includes: adding the flame retardant into the multi-isocyanate and the polyether polyol respectively, then blending and agitating, finally generating the flexible or rigid polyurethane fireproof blockage by foaming, expanding and curing after the chemical reaction. The application method includes: blending and agitating the multi-isocyanate with the polyether polyol containing the flame retardant, priming and spraying the liquid state material onto positions and equipment requiring protection before the foaming of the liquid state material, then flame retardation takes effect at the positions requiring protection after foaming, expanding and curing.
Description
Technical field
The present invention relates to polyurethane fireproof blocking material preparation and application method, be applicable to the demand of the fire-fighting of building, oil, chemical industry, electric power, grain depot and communications and transportation industrial circle fireproof blocking.
Background technology
Performance and utilisation technology thereof in fields such as building, oil, chemical industry, electric power, grain depot and communications and transportation to, fire retardant material have more and more higher requirement, and traditional fire-proof sealing material can not satisfy many-sided requirement far away aspect performance, price, work-ing life, construction technology and the environmental protection.
Aspect fireproof blocking, in order to satisfy needs such as modern communication, electric wiring, ventilation, the structure slit of running through thing opening such as cable shaft, cable testing bridge or buildings self in the buildings such as curtain wall seam, dilatation joint etc. are a large amount of to be existed.When the burst fire, flame, cigarette poison can run through the rapid skewered of thing opening and slit by these and spread, and jeopardize whole buildings and personnel safety.These buildingss are run through opening and slit to carry out the traditional material of shutoff and mainly contains anti-chamotte, fire wall, back-fire relief bag etc.Its construction technology complexity wastes time and energy, the comprehensive cost height, and particularly more to be difficult for shutoff tight at intensive or baroque position for cable, and generally have only 3-4 the work-ing life of this type of material, strengthened maintenance cost.
Summary of the invention
Problem and defective for solving above-mentioned existence the invention provides a kind of polyurethane fireproof blocking material and preparation and application method.Described technical scheme is as follows:
Polyurethane fireproof blocking material comprises:
Polyisocyanates and polyether glycol that polyurethane fireproof blocking material contains fire retardant are mixed in proportion stirring, and through chemical reaction, foaming and intumescing solidifies gentle elasticity or the hard polyaminoester insulation antiseptic flame retardant material of making.Described fire retardant is made up of the multiple inorganics that contains nitrogen, phosphorus, carbon, calcium.
The preparation method of polyurethane fireproof blocking material comprises:
In polyisocyanates, add the inorganic combustion inhibitor of 5～12% weight, and stir;
In polyether glycol, add the inorganic combustion inhibitor of 18～42% weight, and stir;
The polyisocyanates and the polyether glycol that will contain fire retardant mix stirring by 0.85: 1 weight ratio, and through chemical reaction, foaming and intumescing solidifies, and goes into gentle elasticity or hard polyaminoester fire prevention calking.
The density of described gentle elastic polyurethane fire prevention calking is 200kg/m
3～250kg/m
3, the density of hard polyaminoester fire prevention calking is 80kg/m
3～100kg/m
3
The present invention also provides a kind of application method of polyurethane fireproof blocking material, comprising:
Near the position of needs protection, use special machinery or manual operations that polyisocyanates that contains fire retardant and polyether glycol are stirred by 0.85: 1 weight ratio mixing;
As yet not during foaming and intumescing, this liquid material is filled into the position that need carry out shutoff at mixed solution, this liquid material unrestricted flow and foaming and intumescing, closely filling needs the shutoff position;
After solidifying, on the position of needs protection, form firmly seamless fire-resisting protection layer.
The application method of described polyurethane fireproof blocking material also comprises:
1. the beneficial effect of technical scheme provided by the invention is:
By in polyisocyanates and polyether glycol, adding the inorganic combustion inhibitor that contains nitrogen, phosphorus, carbon, calcium, the polyisocyanates and the polyether glycol that will contain inorganic combustion inhibitor then are mixed in proportion stirring, through chemical reaction, foaming and intumescing solidifies makes gentle elasticity or hard polyaminoester fire prevention calking.This material has been realized the present invention:
Reached the primary standard of GB GA161-1997 as fire-proof sealing material, the fire-resistant time limit was greater than three hours.Can satisfy industry. building. civilian to the every requirement of fire-fighting fireproof blocking.
2, described material long service life, its life-span can reach more than 30 years under the situation of ultraviolet direct irradiation not having, and need not routine maintenance.
3, described material has good flowability before foamed solidification not, can freely be full of the die cavity or the space of complicated shape when foaming, solidifies afterwards and contact object good bond.Its compressive strength is 0.4-0.5MPa, and shearing resistance is 0.3-0.4MPa, need not extra reinforcement measure.Gu described material has good construction property.
4, described material has good environmental protection characteristic, does not all contain in its manufacturing, construction, use or produces nuisances such as halogen compound, formaldehyde or heavy metal.
Description of drawings
Fig. 1 is preparation method's schema of polyurethane fireproof blocking material;
Fig. 2 is the structural representation of horizontal direction building structure upper shed shutoff polyurethane fireproof blocking material;
Fig. 3 is the structural representation of vertical direction building structure upper shed shutoff polyurethane fireproof blocking material.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, embodiment of the present invention is described further in detail below in conjunction with accompanying drawing.
Present embodiment provides a kind of polyurethane fireproof blocking material, comprising:
Described polyurethane fireproof blocking material is to be mixed in proportion stirring by polyisocyanates that contains fire retardant and polyether glycol, through chemical reaction, foaming and intumescing solidifies and gentle elasticity or the hard polyaminoester fire prevention calking made, and described fire retardant is made up of the multiple inorganics that contains nitrogen, phosphorus, carbon, calcium.
Close bubble content greater than 90% in the foam structure of the hard polyurethane foaming material that present embodiment provides, water-intake rate is low, generally below 2%.Have excellent waterproof row and antiseptic property.
As shown in Figure 1, the polyurethane fireproof blocking material preparation method that present embodiment provides, its step mainly comprises:
In polyisocyanates, add the inorganic combustion inhibitor of 5～12% weight, and stir;
In polyether glycol, add the inorganic combustion inhibitor of 18～42% weight, and stir;
The polyisocyanates and the polyether glycol that will contain fire retardant mix stirring by 0.85: 1 weight ratio, and through chemical reaction, foaming and intumescing solidifies, and makes gentle elasticity or hard polyaminoester fire prevention calking.
The density of described gentle elastic polyurethane fire prevention calking is 200kg/m
3～250kg/m
3, the density of hard polyaminoester fire prevention calking is 80kg/m
3～100kg/m
3
Present embodiment provides a kind of application method of polyurethane fireproof blocking material,
Be to establish simple template at the position of needs protection.
Use special machinery or manual operations that polyisocyanates that contains fire retardant and polyether glycol are mixed stirring by 0.85: 1 weight ratio;
At mixed solution as yet not during foaming and intumescing; pour into or spray to this liquid material between the position that needs protection; this liquid material unrestricted flow and foaming and intumescing; closely fill the space at the position of required protection; through curing and demolding, form firmly seamless fire-resisting protection layer at the position of needs protection.
Wherein, when the matrix openings of filling polyurethane fire prevention calking needs shutoff if desired, then go along with sb. to guard him rapping plate, and on the template of matrix openings one end, a sprue gate is set, and pour into institute's polyurethane fireproof blocking material in matrix openings by this sprue gate at the position that matrix openings need be protected.
As shown in Figure 2, be embedded in to be penetrated with in the polyurethane fireproof blocking material 3 in the architectural openings 4 and run through thing 2, polyurethane fireproof blocking material 3 with run through thing 2 and closely connect as one, form inseparable one-piece construction.Its construction procedure is: matrix 1 is provided with opening 4, when needs shutoff opening 4, installs template 5 in the lower end of opening 4, in order to avoid leakage.The cavity volume of filling according to the expansion ratio and the needs of mixed solution is determined the quantity of the dabbling mixed solution of needs earlier, use special machinery or manual operations by actual needs mixed solution quantity then, polyisocyanates that contains fire retardant and polyether glycol are mixed stirring by 0.85: 1 weight ratio., mixed solution is poured in the opening 4 as yet not during foaming and intumescing at mixed solution.This liquid material unrestricted flow and foaming and intumescing, the insulation antiseptic flame retardant material that generated 3 be shutoff opening 4 and tamp the slit of running through 2 of things fully closely.Polyurethane fireproof blocking material 3 behind the curing molding can with the inwall close and firm that runs through thing 2 and opening 4 in conjunction with forming incorporate structure, have section fiery shutoff problem that complexity runs through the opening 4 of thing in the building structure thereby solved, realized shutoff opening quickly and easily.Because this polyurethane fireproof blocking material itself is easy to boring or cutting, is convenient to increase and replacing and runs through thing.
As shown in Figure 3, when needs shutoff opening 4, the mounting template 5 respectively at 4 two ends of opening, wherein the template top of a side is provided with sprue gate 7, the cavity volume of filling according to the expansion ratio and the needs of mixed solution is determined the quantity of the dabbling mixed solution of needs earlier, use special machinery or manual operations by actual needs mixed solution quantity then, polyisocyanates that contains fire retardant and polyether glycol are mixed stirring by 0.85: 1 weight ratio., mixed solution is poured in the opening 4 by sprue gate 7 as yet not during foaming and intumescing at mixed solution.This liquid material unrestricted flow and foaming and intumescing, the polyurethane fireproof blocking material that generated 3 be shutoff opening 4 and tamp the slit of running through 2 of things fully closely.Behind the curing molding, form removal 5.This polyurethane fireproof blocking material 3 can with the inwall close and firm that runs through thing 2 and opening 4 in conjunction with forming incorporate structure.
The application method that present embodiment provides has good flowability because of the material that uses, when foaming, can freely be full of the die cavity or the space of complicated shape, solidify back and contact object secure bond, its compressive strength is 0.4-0.5MPa, shearing resistance is 0.3-0.4MPa, need not extra reinforcement measure, embodied good construction property.
The above; only be the simple concrete Implementation Modes of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (7)
1, polyurethane fireproof blocking material is characterized in that, this polyurethane fireproof blocking material is to be mixed in proportion stirring by polyisocyanates that contains fire retardant and polyether glycol, and through chemical reaction, and foaming and intumescing solidifies and makes gentle elasticity or hard polyaminoester fire prevention calking.
2, polyurethane fireproof blocking material according to claim 1 is characterized in that, the described fire retardant of polyurethane fireproof blocking material is made up of the multiple inorganics that contains nitrogen, phosphorus, carbon, calcium.
3, polyurethane fireproof blocking material according to claim 1, it is characterized in that, described polyurethane fireproof blocking material does not all contain in its manufacturing, construction, use or produces nuisances such as halogen compound, formaldehyde or heavy metal, and this polyurethane fireproof blocking material can be charing expanded when meeting fire, and expansion multiplying power is 1～2 times.
4, the preparation method of polyurethane fireproof blocking material is characterized in that,
In polyisocyanates, add the inorganic combustion inhibitor of 5～16% weight, and stir;
In polyether glycol, add the inorganic combustion inhibitor of 18～42% weight, and stir;
The polyisocyanates and the polyether glycol that will contain fire retardant mix stirring by 0.85: 1 weight ratio, and through chemical reaction, foaming and intumescing solidifies, and makes gentle elasticity or hard polyaminoester fire prevention calking.
5, the preparation method of polyurethane fireproof blocking material according to claim 4 is characterized in that, the density of described gentle elastic polyurethane fire prevention calking is 200kg/m
3～250kg/m
3, the density of hard polyaminoester fire prevention calking is 80kg/m
3～100kg/m
3
6, the application method of polyurethane fireproof blocking material is characterized in that,
Position in the needs protection impales template;
Use special machinery or manual operations that polyisocyanates that contains fire retardant and polyether glycol are mixed stirring by 0.85: 1 weight ratio;
At mixed solution as yet not during foaming and intumescing, with this liquid material perfusion or spray to and need the position of protection to establish, this liquid material unrestricted flow and foaming and intumescing are closely filled the space at the position that needs protection;
After the curing, form firmly seamless fire-resisting protection layer at the position of needs protection.
7, the application method of polyurethane fireproof blocking material according to claim 6 is characterized in that, implements fireproof blocking;
Use special machinery or manual operations the polyisocyanates that contains fire retardant and polyether glycol by 0.85: 1 weight ratio mix stir after, at it as yet not during foaming and intumescing, in the required space of carrying out fireproof blocking of the perfusion of this liquid material or spray, after treating that this material foaming and intumescing solidifies, just play fire retardation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101145676A CN101298515A (en) | 2008-06-04 | 2008-06-04 | Polyurethane fireproof blocking material, preparation and use thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101145676A CN101298515A (en) | 2008-06-04 | 2008-06-04 | Polyurethane fireproof blocking material, preparation and use thereof |
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| CN101298515A true CN101298515A (en) | 2008-11-05 |
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| CNA2008101145676A Pending CN101298515A (en) | 2008-06-04 | 2008-06-04 | Polyurethane fireproof blocking material, preparation and use thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109867948A (en) * | 2019-02-01 | 2019-06-11 | 杭州晶索建材有限公司 | A kind of spring high-efficient fire-proof plugging sheet material and preparation method thereof |
| CN111346318A (en) * | 2020-02-28 | 2020-06-30 | 扬州市管件厂有限公司 | Polyurethane foaming surrounding and blocking self-extinguishing method for forest fire |
-
2008
- 2008-06-04 CN CNA2008101145676A patent/CN101298515A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109867948A (en) * | 2019-02-01 | 2019-06-11 | 杭州晶索建材有限公司 | A kind of spring high-efficient fire-proof plugging sheet material and preparation method thereof |
| CN111346318A (en) * | 2020-02-28 | 2020-06-30 | 扬州市管件厂有限公司 | Polyurethane foaming surrounding and blocking self-extinguishing method for forest fire |
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Open date: 20081105 |