CN114292617A - Fire-resistant sealant and preparation method thereof - Google Patents
Fire-resistant sealant and preparation method thereof Download PDFInfo
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- CN114292617A CN114292617A CN202111629248.0A CN202111629248A CN114292617A CN 114292617 A CN114292617 A CN 114292617A CN 202111629248 A CN202111629248 A CN 202111629248A CN 114292617 A CN114292617 A CN 114292617A
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- 239000000565 sealant Substances 0.000 title claims abstract description 55
- 230000009970 fire resistant effect Effects 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 229920005862 polyol Polymers 0.000 claims abstract description 23
- 150000003077 polyols Chemical class 0.000 claims abstract description 23
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 21
- 229920000570 polyether Polymers 0.000 claims abstract description 21
- 239000003063 flame retardant Substances 0.000 claims abstract description 20
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims abstract description 19
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000000945 filler Substances 0.000 claims abstract description 17
- 239000003381 stabilizer Substances 0.000 claims abstract description 16
- 239000012744 reinforcing agent Substances 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 13
- 238000003756 stirring Methods 0.000 claims abstract description 11
- 238000002156 mixing Methods 0.000 claims abstract description 10
- 238000001816 cooling Methods 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000007599 discharging Methods 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 238000004806 packaging method and process Methods 0.000 claims abstract description 5
- 238000005303 weighing Methods 0.000 claims abstract description 5
- 239000012856 weighed raw material Substances 0.000 claims abstract description 3
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims description 15
- 239000004952 Polyamide Substances 0.000 claims description 14
- 229920002647 polyamide Polymers 0.000 claims description 14
- 229910019142 PO4 Inorganic materials 0.000 claims description 13
- NKZSPGSOXYXWQA-UHFFFAOYSA-N dioxido(oxo)titanium;lead(2+) Chemical compound [Pb+2].[O-][Ti]([O-])=O NKZSPGSOXYXWQA-UHFFFAOYSA-N 0.000 claims description 13
- 239000010452 phosphate Substances 0.000 claims description 13
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 12
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 claims description 12
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical group OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 claims description 12
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims description 12
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims description 12
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 10
- 229920005830 Polyurethane Foam Polymers 0.000 claims description 8
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 8
- 239000011496 polyurethane foam Substances 0.000 claims description 8
- 239000000347 magnesium hydroxide Substances 0.000 claims description 7
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 7
- -1 phosphate ester Chemical class 0.000 claims description 5
- 230000000694 effects Effects 0.000 abstract description 14
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 4
- 239000001301 oxygen Substances 0.000 abstract description 4
- 229910052760 oxygen Inorganic materials 0.000 abstract description 4
- 239000003292 glue Substances 0.000 description 26
- 229920002635 polyurethane Polymers 0.000 description 22
- 239000004814 polyurethane Substances 0.000 description 22
- 230000000052 comparative effect Effects 0.000 description 21
- 238000007789 sealing Methods 0.000 description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000005886 esterification reaction Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- 239000012024 dehydrating agents Substances 0.000 description 3
- 238000011049 filling Methods 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 239000011241 protective layer Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 2
- 229910021502 aluminium hydroxide Inorganic materials 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 150000002148 esters Chemical class 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 150000003014 phosphoric acid esters Chemical class 0.000 description 2
- 150000005846 sugar alcohols Polymers 0.000 description 2
- 244000043261 Hevea brasiliensis Species 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000004925 denaturation Methods 0.000 description 1
- 230000036425 denaturation Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000004100 electronic packaging Methods 0.000 description 1
- 230000032050 esterification Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920003052 natural elastomer Polymers 0.000 description 1
- 239000000025 natural resin Substances 0.000 description 1
- 229920001194 natural rubber Polymers 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Landscapes
- Sealing Material Composition (AREA)
Abstract
The application relates to the field of sealant, and particularly discloses a fire-resistant sealant and a preparation method thereof, wherein the fire-resistant sealant comprises the following raw materials in parts by weight: toluene diisocyanate and polyether polyol 100-120 parts; 30-40 parts of an intumescent flame retardant; 20-30 parts of a filling agent; 20-30 parts of a reinforcing agent; 5-15 parts of a stabilizer. The preparation method comprises the following steps: the method comprises the following steps: preparing materials: weighing the raw material components according to the proportion; mixing: mixing, heating and stirring the weighed raw material components, and preserving heat; discharging: and cooling and packaging the heat-insulated materials. The application adopts the reinforcing agent to enhance the bonding effect of the sealant, the intumescent flame retardant can block the contact between the sealant and oxygen, and the filling agent can be decomposed to absorb heat, so that the sealant with higher fire resistance can be obtained.
Description
Technical Field
The application relates to the field of sealants, in particular to a fire-resistant sealant and a preparation method thereof.
Background
The sealant is a sealing material which deforms along with the shape of the sealing surface, is not easy to flow and has strong adhesion. The sealant is usually used for filling a configuration gap and connecting two or more objects, so that the adhesive has a sealing effect between different objects, and has the effects of leakage prevention, water prevention, vibration prevention, sound insulation, heat insulation and the like.
The sealant is generally prepared by using sticky substances such as natural resin, synthetic resin, asphaltic substances, natural rubber or synthetic rubber and the like as base materials, wherein the resin, the asphaltic substances and the rubber are combustible substances, and when the sealant is used for approaches such as electronic packaging and the like, high temperature or open fire can be met, so that the sealant can be burnt or denatured, and the adhesive property of the sealant is influenced.
Disclosure of Invention
In order to improve the fire resistance of the sealant, the application provides a fire-resistant sealant and a preparation method thereof. In a first aspect, the application provides a fire-resistant sealant, which adopts the following technical scheme:
the fire-resistant sealant comprises the following raw materials in parts by weight:
toluene diisocyanate and polyether polyol 100-120 parts;
30-40 parts of an intumescent flame retardant;
20-30 parts of a filling agent;
20-30 parts of a reinforcing agent;
5-15 parts of a stabilizer.
By adopting the technical scheme, the polyurethane is nonflammable and has high temperature resistance, molecular chains of the polyurethane are not easy to break and denature, the toluene diisocyanate and the polyether polyol are synthesized into the single-component polyurethane, and the single-component polyurethane is cured after being contacted with a trace amount of water contained in the air, so that the sealing effect is achieved. The intumescent flame retardant can form a protective layer on the surface of the sealant after being subjected to high temperature so as to prevent the denaturation of the sealant. The filler can be filled into the sealant, and the filler can be decomposed to absorb heat, so that the possibility of breaking the molecular chain of the single-component polyurethane is reduced. The reinforcing agent has higher viscosity, and the reinforcing agent can enhance the viscosity and the bonding strength of the sealant. The stabilizer enables the single-component polyurethane to be more stable in the generation process of the single-component polyurethane, so that the bonding strength of the sealant is improved.
Preferably, the weight ratio of the toluene diisocyanate to the polyether polyol is (6-10) to (4-7).
Preferably, the weight ratio of the toluene diisocyanate to the polyether polyol is 2: 1.
By adopting the technical scheme, better synthesis effect can be achieved when the weight ratio of the toluene diisocyanate to the polyether polyol is 2: 1.
Preferably, the intumescent flame retardant comprises pentaerythritol, phosphate and polyamide, wherein the weight ratio of the pentaerythritol to the phosphate to the polyamide is (11-25): (15-20): (20-30).
Preferably, the weight ratio of the pentaerythritol, the phosphate and the polyamide is 18: 18: 25.
preferably, the intumescent flame retardant also comprises lead titanate, and the weight ratio of the pentaerythritol, the phosphate, the polyamide and the lead titanate is (11-25): (15-20): (20-30): (4-5).
By adopting the technical scheme, under the environment of high temperature, phosphate ester is heated to generate esterified polyol and acid capable of being used as a dehydrating agent, the acid and pentaerythritol are subjected to esterification reaction, the system is melted before and during the esterification reaction, the system in the molten state is expanded and foamed by incombustible gas generated during the reaction process, and meanwhile, the polyol and the ester are dehydrated and carbonized to form inorganic matters and carbon residues on the surface of polyurethane, so that a protective layer is formed on the surface of the sealant, the sealant is prevented from contacting with oxygen, and the fire resistance of the sealant is improved. The lead titanate is a thermal shrinkage material, and the volume of the lead titanate is reduced when the expansion flame retardant expands, so that the volume stability of the sealant is improved.
Preferably, the filler is one or two of magnesium hydroxide and aluminum hydroxide.
Through adopting above-mentioned technical scheme, magnesium hydrate and aluminium hydroxide can take place decomposition reaction when the temperature rises, consequently can absorb the heat, play the effect of cooling to sealed glue, the moisture that decomposes simultaneously and produce can have fire-retardant effect.
Preferably, the stabilizing agent is a polyurethane foam stabilizer.
Preferably, the reinforcing agent is hydroxypropyl methyl cellulose.
Through adopting above-mentioned technical scheme, hydroxypropyl methylcellulose has higher viscosity to can improve the cohesiveness of sealed glue, hydroxypropyl methylcellulose adds to simultaneously and can promote the cohesive strength of sealed glue in sealed glue.
In a second aspect, the present application provides a method for preparing a fire resistant sealant, comprising the steps of:
preparing materials: weighing the raw material components according to the proportion;
mixing: mixing, heating and stirring the weighed raw material components, and preserving heat;
discharging: and cooling and packaging the heat-insulated materials.
By adopting the technical scheme, the method is simple to operate, the preparation conditions are easy to realize, the prepared sealant has strong fire resistance, is not easy to burn at high temperature and flame, is not easy to fall off from an object, and can keep better cohesiveness.
In summary, the present application has the following beneficial effects:
1. because this application adopts toluene diisocyanate, polyether polyol and reinforcing agent as the adhesive material of sealed glue, has strengthened the bonding effect of sealed glue, sealed glue only need absorb in the air small part moisture can solidify, the convenient degree of use of sealed glue has been promoted, the intumescent flame retardant can block the contact of sealing glue and oxygen, the filler can decompose and absorb the heat, thereby the fire resistance of sealed glue can be improved to intumescent flame retardant and filler homoenergetic, thereby can obtain the sealed glue that the fire resistance is higher.
2. Magnesium hydroxide and aluminum hydroxide are preferably used as fillers in the present application. The magnesium hydroxide and the aluminum hydroxide have decomposition reaction to separate out water and absorb heat when the temperature rises, so that a certain flame retardant effect is achieved, and the fire resistance of the sealant is further improved.
3. According to the method, the toluene diisocyanate and the polyether polyol are polymerized by high-temperature stirring, and then the intumescent flame retardant, the stabilizer and the filler are added for stirring, so that the production steps are simple and easy to realize.
Detailed Description
Table 1: the source and the type of each raw material component
Examples
Example 1
Preparing materials: weighing 60kg of toluene diisocyanate, 40kg of polyether polyol and 5kg of polyurethane foam stabilizer; intumescent flame retardant: 6.6kg of pentaerythritol, 9kg of phosphoric acid ester, 12kg of polyamide and 2.4 kg of lead titanate; filling agent: 20kg of aluminum hydroxide; reinforcing agent: 20kg of hydroxypropylmethylcellulose; 0.5kg of catalyst.
Mixing: mixing toluene diisocyanate, polyether polyol and a polyurethane foam stabilizer, heating to 150 ℃, stirring for 1 hour at 150 ℃, and standing for 30min after stirring to obtain single-component polyurethane; and adding pentaerythritol, phosphate, polyamide, lead titanate, aluminum hydroxide and hydroxypropyl methyl cellulose into the single-component polyurethane, and stirring at 90 ℃ for 50min to obtain the fire-resistant sealant.
Discharging: and cooling the obtained fire-resistant sealant to room temperature, and packaging.
Example 2
Preparing materials: weighing 72kg of toluene diisocyanate, 48kg of polyether polyol and 15kg of polyurethane foam stabilizer; intumescent flame retardant: 8.8kg of pentaerythritol, 12kg of phosphoric acid ester, 16kg of polyamide and 3.2 kg of lead titanate; filling agent: 30kg of aluminum hydroxide; reinforcing agent: 30kg of hydroxypropylmethylcellulose; 0.5kg of catalyst.
Mixing: mixing toluene diisocyanate, polyether polyol and a polyurethane foam stabilizer, heating to 150 ℃, stirring for 1 hour at 150 ℃, and standing for 30min after stirring to obtain single-component polyurethane; and adding pentaerythritol, phosphate, polyamide, lead titanate, aluminum hydroxide and hydroxypropyl methyl cellulose into the single-component polyurethane, and stirring at 90 ℃ for 50min to obtain the fire-resistant sealant.
Discharging: and cooling the obtained fire-resistant sealant to room temperature, and packaging.
Example 3 to example 8
Examples 3-8 differ from example 1 in the amounts of toluene diisocyanate, polyether polyol, and polyurethane foam stabilizer added.
Table 2: raw material addition amounts in examples 3 to 8
Example 9-example 13
Examples 9-13 differ from example 1 in the amounts of pentaerythritol, phosphate, polyamide and lead titanate added.
Table 3: the amounts of the respective raw materials added in examples 9 to 13
Example 14-example 17
Example 14-example 17 differed from example 1 in the amount of filler added.
Table 4: examples 14 to 17 the amount of the filler added
Examples 18 to 19
Examples 18 to 19 differ from example 1 only in the amount of reinforcing agent added.
Table 5: examples 18 to 19 where reinforcing agent was added
Comparative example
Comparative example 1
Comparative example 1 differs from example 1 only in that comparative example 1 does not have an intumescent flame retardant added.
Comparative example 2
Comparative example 2 differs from example 1 only in that comparative example 2 does not have a filler added.
Comparative example 3
Comparative example 3 differs from example 1 only in that comparative example 3 does not have a reinforcing agent added.
Comparative example 4
Comparative example 4 differs from example 1 only in that comparative example 4 has no stabilizer added.
Performance test
Detection method/test method
1. The sealing glue is bonded with two rigid plates, and after the sealing glue is cured, the bonding strength of the refractory sealing glue prepared in each example and the comparative example is measured according to GB/T7124 & 2008 & determination of tensile shear strength of adhesive (rigid material to rigid material).
2. The sealing glue is bonded with two rigid plates, after the sealing glue is cured, the sealing glue is baked at 150 ℃ for 30min, and after natural cooling, the bonding strength of the refractory sealing glue prepared in each example and comparative example is measured according to GB/T7124-.
3. The sealing glue is bonded with the two rigid plates, after the sealing glue is cured, the sealing glue is baked at 400 ℃ for 30min, and after natural cooling, the bonding strength of the refractory sealing glue prepared in each example and comparative example is measured according to GB/T7124-.
Results and analysis of results
Table 6: experimental data for each example and each comparative example
By combining examples 1-8, comparative example 4 and table 6, the toluene diisocyanate and the polyether polyol can synthesize the single-component polyurethane, the single-component polyurethane molecular chain is not easy to break and burn, the single-component polyurethane has high temperature resistance, the single-component polyurethane is convenient to use, the single-component polyurethane can be cured after being contacted with a trace amount of water in the air, the single-component polyurethane plays a role in connecting or filling objects, and the toluene diisocyanate ester and the polyether polyol can achieve a better bonding effect when the ratio of the toluene diisocyanate ester to the polyether polyol reaches 2: 1. In the process of polymerizing the toluene diisocyanate and the polyether polyol to generate the single-component polyurethane, the polyurethane foam stabilizer plays a role in stabilizing the toluene diisocyanate and the polyether polyol, so that the reaction process is more stable, and the prepared single-component polyurethane has higher bonding strength.
In combination with examples 9 to 13, comparative example 1 and table 6, the addition of the flame retardant expanding agent can provide a better fire resistance effect and a stronger fire resistance effect at high temperatures. The phosphate ester generates esterification polyhydric alcohol and acid which can be used as a dehydrating agent, the acid which is used as the dehydrating agent and pentaerythritol are subjected to esterification reaction at a slightly higher temperature, the system is melted before and during the esterification reaction, nitrogen generated by polyamide during the reaction process is incombustible, the nitrogen expands and foams the system which is in a molten state, and meanwhile, the polyhydric alcohol and the ester are dehydrated and carbonized to form a protective layer of inorganic matters and carbon residues on the surface of polyurethane to prevent the sealant from contacting with oxygen in the air, so that the fire resistance of the sealant is improved. When the lead titanate is heated, the ferroelectric phase change is changed into paraelectric phase change, so that the phenomenon of volume shrinkage is generated, and the volume of the lead titanate is reduced when the intumescent flame retardant expands, so that the whole volume of the sealant cannot be changed too much, and the volume stability of the sealant is improved.
Combining examples 14-17, comparative example 2 and table 6, the filling of magnesium hydroxide and aluminum hydroxide all improve the heat resistance of the sealant, and the magnesium hydroxide and aluminum hydroxide do not themselves burn, which has the effect of stopping the burning of the sealant. Magnesium hydroxide and aluminium hydroxide can decompose under high temperature, can absorb the heat on sealed glue during the decomposition to play the effect of cooling to sealed glue, and the water that decomposes the production can further block sealed glue and burn, and the evaporation of water also can absorb the heat on sealed glue, has further improved sealed fire resistance of gluing.
By combining the example 1, the comparative example 3, the examples 18 to 19 and the table 6, the hydroxypropyl methyl cellulose has higher viscosity and better compatibility with single-component polyurethane, the molecular chain of the hydroxypropyl methyl cellulose has stronger structure, the hydroxypropyl methyl cellulose can improve the strength of the sealant after the sealant is cured, and the sealant added with the hydroxypropyl methyl cellulose has stronger bonding strength.
The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.
Claims (10)
1. The fire-resistant sealant is characterized by comprising the following raw materials in parts by weight:
toluene diisocyanate and polyether polyol 100-120 parts;
30-40 parts of an intumescent flame retardant;
20-30 parts of a filling agent;
20-30 parts of a reinforcing agent;
5-15 parts of a stabilizer.
2. The fire resistant sealant according to claim 1, wherein: the weight ratio of the toluene diisocyanate to the polyether polyol is (6-10) to (4-7).
3. A fire resistant sealant according to claim 2 wherein: the weight ratio of the toluene diisocyanate to the polyether polyol is 2: 1.
4. The fire resistant sealant according to claim 1, wherein: the intumescent flame retardant comprises pentaerythritol, phosphate and polyamide, wherein the weight ratio of the pentaerythritol to the phosphate to the polyamide is (11-25): (15-20): (20-30).
5. The fire resistant sealant according to claim 4, wherein: the weight ratio of the pentaerythritol to the phosphate to the polyamide is 18: 18: 25.
6. the fire resistant sealant according to claim 4, wherein: the intumescent flame retardant also comprises lead titanate, and the weight ratio of the pentaerythritol, the phosphate ester, the polyamide and the lead titanate is (11-25): (15-20): (20-30): (4-5).
7. The fire resistant sealant according to claim 1, wherein: the filler is one or two of magnesium hydroxide and aluminum hydroxide.
8. The fire resistant sealant according to claim 1, wherein: the stabilizing agent is a polyurethane foam stabilizer.
9. The fire resistant sealant according to claim 1, wherein: the reinforcing agent is hydroxypropyl methyl cellulose.
10. A process for the preparation of a fire resistant sealant according to any one of claims 1 to 9 wherein: the method comprises the following steps:
preparing materials: weighing the raw material components according to the proportion;
mixing: mixing and heating the weighed raw material components to 90-150 ℃, stirring, and preserving heat;
discharging: and cooling and packaging the heat-insulated materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111629248.0A CN114292617A (en) | 2021-12-29 | 2021-12-29 | Fire-resistant sealant and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111629248.0A CN114292617A (en) | 2021-12-29 | 2021-12-29 | Fire-resistant sealant and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN114292617A true CN114292617A (en) | 2022-04-08 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4489176A (en) * | 1983-05-11 | 1984-12-18 | Henkel Kommanditgesellschaft Auf Aktien | Polyurethane compositions useful as adhesives for insulation materials and/or facings |
| JP2000129239A (en) * | 1998-10-27 | 2000-05-09 | Sekisui Chem Co Ltd | Moisture-curable adhesive composition |
| CN102504752A (en) * | 2011-11-30 | 2012-06-20 | 山东北方现代化学工业有限公司 | Room-temperature moisture-curable single-component flame-retardant polyurethane sealant |
| CN107418497A (en) * | 2017-08-16 | 2017-12-01 | 华威粘结材料（上海）股份有限公司 | A kind of waterborne polyurethane adhesive and preparation method and application |
-
2021
- 2021-12-29 CN CN202111629248.0A patent/CN114292617A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4489176A (en) * | 1983-05-11 | 1984-12-18 | Henkel Kommanditgesellschaft Auf Aktien | Polyurethane compositions useful as adhesives for insulation materials and/or facings |
| JP2000129239A (en) * | 1998-10-27 | 2000-05-09 | Sekisui Chem Co Ltd | Moisture-curable adhesive composition |
| CN102504752A (en) * | 2011-11-30 | 2012-06-20 | 山东北方现代化学工业有限公司 | Room-temperature moisture-curable single-component flame-retardant polyurethane sealant |
| CN107418497A (en) * | 2017-08-16 | 2017-12-01 | 华威粘结材料（上海）股份有限公司 | A kind of waterborne polyurethane adhesive and preparation method and application |
Non-Patent Citations (1)
| Title |
|---|
| 北京理工大学出版社 * |
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Application publication date: 20220408 |