CN115584009A - Foamed polymer for barrier breaking and preparation method thereof - Google Patents
Foamed polymer for barrier breaking and preparation method thereof Download PDFInfo
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- CN115584009A CN115584009A CN202211291685.0A CN202211291685A CN115584009A CN 115584009 A CN115584009 A CN 115584009A CN 202211291685 A CN202211291685 A CN 202211291685A CN 115584009 A CN115584009 A CN 115584009A
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- 229920000642 polymer Polymers 0.000 title claims abstract description 43
- 230000004888 barrier function Effects 0.000 title claims abstract description 38
- 238000002360 preparation method Methods 0.000 title abstract description 28
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical class [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 79
- GDVKFRBCXAPAQJ-UHFFFAOYSA-A dialuminum;hexamagnesium;carbonate;hexadecahydroxide Chemical class [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Mg+2].[Al+3].[Al+3].[O-]C([O-])=O GDVKFRBCXAPAQJ-UHFFFAOYSA-A 0.000 claims abstract description 58
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 41
- 229920000570 polyether Polymers 0.000 claims abstract description 41
- 239000002245 particle Substances 0.000 claims abstract description 39
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 22
- 229960001545 hydrotalcite Drugs 0.000 claims abstract description 22
- 229910001701 hydrotalcite Inorganic materials 0.000 claims abstract description 22
- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylenediamine Chemical compound C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229920001971 elastomer Polymers 0.000 claims abstract description 12
- 239000000806 elastomer Substances 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229920002545 silicone oil Polymers 0.000 claims abstract description 9
- 230000000694 effects Effects 0.000 claims abstract description 7
- 238000003756 stirring Methods 0.000 claims description 24
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 21
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 18
- 238000006243 chemical reaction Methods 0.000 claims description 18
- 238000002156 mixing Methods 0.000 claims description 16
- 238000010438 heat treatment Methods 0.000 claims description 15
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 13
- 239000012265 solid product Substances 0.000 claims description 13
- QANIADJLTJYOFI-UHFFFAOYSA-K aluminum;magnesium;carbonate;hydroxide;hydrate Chemical compound O.[OH-].[Mg+2].[Al+3].[O-]C([O-])=O QANIADJLTJYOFI-UHFFFAOYSA-K 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- 239000000843 powder Substances 0.000 claims description 9
- 239000006260 foam Substances 0.000 claims description 6
- 238000005187 foaming Methods 0.000 claims description 6
- 238000001354 calcination Methods 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 238000011049 filling Methods 0.000 claims description 4
- 239000000725 suspension Substances 0.000 abstract description 9
- 230000008030 elimination Effects 0.000 abstract description 2
- 238000003379 elimination reaction Methods 0.000 abstract description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 33
- 238000001914 filtration Methods 0.000 description 11
- FFUAGWLWBBFQJT-UHFFFAOYSA-N hexamethyldisilazane Chemical compound C[Si](C)(C)N[Si](C)(C)C FFUAGWLWBBFQJT-UHFFFAOYSA-N 0.000 description 6
- 239000010419 fine particle Substances 0.000 description 3
- 239000006261 foam material Substances 0.000 description 3
- 244000198134 Agave sisalana Species 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 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 description 1
- 241000219357 Cactaceae Species 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 244000274883 Urtica dioica Species 0.000 description 1
- 235000009108 Urtica dioica Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000003623 enhancer Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002667 nucleating agent Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4804—Two or more polyethers of different physical or chemical nature
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
- C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2101/00—Manufacture of cellular products
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2110/00—Foam properties
- C08G2110/0083—Foam properties prepared using water as the sole blowing agent
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
The invention relates to a foamed polymer for breaking barriers and a preparation method thereof, wherein the foamed polymer comprises 100 parts of a component A and 115 to 123 parts of a component B in parts by weight; wherein: the component A comprises: 65 to 78 parts of hard bubble polyether, 10 to 14 parts of elastomer polyether, 1.2 to 1.7 parts of triethylene diamine and 2.3 to 5 parts of water-soluble silicone oil; the component B comprises: a suspension comprising 25 to 37 parts of modified calcium carbonate particles and 7 to 11 parts of modified hydrotalcite particles dispersed in 150 to 210 parts of water, wherein the modified calcium carbonate is calcium carbonate coupled with dimethyl diisocyanate, and the modified hydrotalcite is hydrotalcite coupled with dimethyl diisocyanate. The flexible barrier breaking mode disclosed by the invention has higher efficiency and better effect than the traditional violence elimination mode.
Description
Technical Field
The invention relates to the technical field of barrier breaking, in particular to a foamed polymer for barrier breaking and a preparation method thereof.
Background
One important task when people log in is how to break through obstacles, which is one of the key tasks in engineering security. For example, a plurality of obstacles are arranged at the beach head or the like to block or delay the landing of people, and the obstacles can be dozens of types, such as triangular cones, blocking trenches, wire nets and other artificial obstacles. In addition, natural obstacles such as pits, swamps, trees and plants such as cactus, sisal, nettle and sisal may be encountered. Therefore, how to quickly and effectively break these obstacles is the key to successful login of people. In the traditional barrier breaking mode, a violent removing mode is generally adopted, for example, barriers are broken through the combination of various barrier breaking ammunitions, barrier breaking equipment and the like. However, this method has many disadvantages, such as inaccurate operation, no movement, low efficiency, long time consumption, difficulty in achieving the desired effect, and easy generation of secondary obstacle. Therefore, it is necessary to search for a new barrier breaking method.
Disclosure of Invention
In order to solve the problems, the invention provides a foamed polymer for barrier breaking and a preparation method thereof, the foamed polymer is used for quickly filling, covering, wrapping and isolating barriers, and the flexible barrier breaking mode is higher in efficiency and better in effect than the traditional violence elimination mode. In order to realize the purpose, the invention discloses the following technical scheme:
the invention discloses a foamed polymer for breaking barriers, which comprises 100 parts of a component A and 115 to 123 parts of a component B in parts by weight. Wherein: the component A comprises: 65 to 78 parts of hard bubble polyether, 10 to 14 parts of elastomer polyether, 1.2 to 1.7 parts of triethylene diamine and 2.3 to 5 parts of water-soluble silicone oil. The component B comprises: the modified calcium carbonate composite material is a suspension formed by dispersing 25-37 parts of modified calcium carbonate particles and 7-11 parts of modified hydrotalcite particles in 150-210 parts of water, wherein the modified calcium carbonate is calcium carbonate coupled with dimethyl diisocyanate, the modified hydrotalcite is hydrotalcite coupled with dimethyl diisocyanate, and the hydrotalcite is subjected to calcination treatment.
In a further embodiment, the hard bubble polyether comprises any one of polyether 4110a, polyether 4110b, polyether 4110c, polyether NH4201 and the like.
In a further aspect, the elastomeric polyether comprises any one of DL-2000 elastomeric polyether, DL-3000 elastomeric polyether, ED-28 elastomeric polyether, and the like. The elastomer polyether and the hard foam polyether cooperate to obtain the foamed polymer with high strength and certain elasticity.
In a further embodiment, the modified calcium carbonate is formed by coupling dimethyl diisocyanate on calcium carbonate through a silane coupling agent.
In a further embodiment, the modified hydrotalcite is formed by coupling dimethyl diisocyanate to calcined hydrotalcite through a silane coupling agent.
In a further scheme, the preparation method of the modified calcium carbonate or the modified hydrotalcite comprises the following steps: dispersing calcium carbonate powder or calcined hydrotalcite powder in absolute ethyl alcohol or absolute methanol, adding the dimethyl diisocyanate, adjusting the pH of the system to be alkaline, adding a silane coupling agent, carrying out heating reaction, and separating out a solid product to obtain the modified calcium carbonate or the modified hydrotalcite. Preferably, the calcining temperature is 230 to 270 ℃ and the time is 40 to 60min.
In a further scheme, the weight of the calcium carbonate powder or the hydrotalcite powder is 11 to 17 parts, the weight of the absolute ethyl alcohol or the absolute methyl alcohol is 120 to 140 parts, the weight of the dimethyl diisocyanate is 85 to 94 parts, and the weight of the silane coupling agent is 0.27 to 0.42 part.
In a further scheme, the silane coupling agent comprises hexamethyl disilazane and a silane coupling agent KH-570, and preferably, the pH is =8 to 10. The silane coupling agent is hydrolyzed under alkaline conditions and then grafted on the surfaces of calcium carbonate particles or hydrotalcite particles, and meanwhile, the influence on the calcium carbonate and the hydrotalcite is avoided.
In a further scheme, the heating reaction is carried out at the temperature of 50-65 ℃ for 4-7 hours, so that the reaction is conveniently and fully carried out.
Secondly, the invention discloses a preparation method of the foamed polymer for breaking barriers, which comprises the following steps: and mixing the components in the component A and then uniformly stirring. And then mixing the component B with the component A until foaming is finished, thus obtaining the foamed polymer.
And further, the component A and the component B are mixed and then sprayed on a barrier, and the foamed polymer is formed after the components react, so that the effects of filling, covering, wrapping, isolating and the like on the barrier are achieved.
Compared with the prior art, the invention has the following beneficial effects: the invention provides a novel barrier breaking mode, which utilizes the generated foamed polymer to quickly fill, cover, wrap and isolate barriers. For this purpose, the invention prepares a foaming polymer raw material consisting of liquid A component and B component, wherein the hard foam polyether and the elastomer polyether in the A component are foamed and then hardened to form a foam material under the action of dimethyl diisocyanate and water provided by the B component, the triethylene diamine obviously improves the strength of the foam material, and the elastomer polyether enables the foam material to have certain toughness. In addition, the B component of the present invention is a suspension formed by dispersing in water modified calcium carbonate fine particles which are dimethyl diisocyanate-coupled calcium carbonate and modified hydrotalcite fine particles which are dimethyl diisocyanate-coupled hydrotalcite, and the reason why the present invention modifies the calcium carbonate and calcined hydrotalcite is that: the calcium carbonate and the calcined hydrotalcite are carried to the component A and then are uniformly distributed in the obtained foamed polymer by connecting the dimethyl diisocyanate to the calcium carbonate and the calcined hydrotalcite so as to ensure that the calcium carbonate and the calcined hydrotalcite are uniformly filled in the component A, and the calcium carbonate not only serves as a nucleating agent of the foamed polymer but also serves as an enhancer, so that the expansion time of the foamed polymer is controlled within a proper range, the strength of the foamed polymer is improved, and meanwhile, the strength of each part of the foamed polymer is uniform, which is very important for the foamed polymer which needs to be rapidly finished foaming and expanding after being sprayed to a barrier to fill, cover, wrap and isolate the barrier. In addition, the calcined hydrotalcite carries moisture into the foamed polymer by utilizing the structural characteristics formed by calcination, so that a good flame retardant effect can be achieved, and the foamed polymer is prevented from being combusted to cause barrier breaking failure.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. The invention will now be further illustrated by specific examples.
Example 1
A method of preparing a foamed polymer for use in a barrier breach comprising the steps of:
(1) The preparation method of the modified calcium carbonate comprises the following steps: dispersing 15 parts by weight of calcium carbonate powder with the particle size of 400-500 meshes in 135 parts by weight of absolute ethyl alcohol, then adding 88 parts by weight of dimethyl diisocyanate, stirring uniformly, then adding acetic acid to adjust the pH value of the system to 9, then adding 0.35 part by weight of silane coupling agent KH-570, heating and reacting at 60 ℃ for 5 hours, filtering and separating out a solid product after completion, and obtaining the modified calcium carbonate for later use.
(2) The preparation method of the modified hydrotalcite comprises the following steps: the hydrotalcite was calcined at 265 ℃ for 45min, cooled to room temperature and calcined. Dispersing 15 parts by weight of the calcined hydrotalcite powder with the particle size of 400-500 meshes in 135 parts by weight of absolute ethyl alcohol, then adding 88 parts by weight of dimethyl diisocyanate, stirring uniformly, then adding acetic acid to adjust the pH value of the system to 9, then adding 0.35 part by weight of silane coupling agent KH-570, heating and reacting at 60 ℃ for 5 hours, filtering and separating out a solid product after the reaction is finished, and obtaining the modified hydrotalcite for later use.
(3) Preparation of a component A: polyether 4110a 74 parts by weight, DL-2000 elastomer polyether 12 parts by weight, triethylene diamine 1.4 parts by weight and water-soluble silicone oil 3 parts by weight are weighed. Mixing the above components, stirring for 2 hr to obtain component A.
(4) B, preparation of a component: taking 31 parts by weight of the modified calcium carbonate particles and 8 parts by weight of the modified hydrotalcite particles, dispersing the modified calcium carbonate particles and the modified hydrotalcite particles in 190 parts by weight of water, and stirring for 30min to form a suspension for later use.
(5) And uniformly mixing the component A and the component B according to the mass ratio of 100.
Example 2
A method of preparing a foamed polymer for use in a barrier breach comprising the steps of:
(1) The preparation method of the modified calcium carbonate comprises the following steps: dispersing 11 parts by weight of calcium carbonate powder with the particle size of 450-500 meshes in 120 parts by weight of anhydrous methanol, adding 85 parts by weight of dimethyl diisocyanate, uniformly stirring, adding acetic acid to adjust the pH value of the system to 10, adding 0.27 part by weight of hexamethyldisilazane, heating at 50 ℃ for reaction for 7 hours, filtering and separating out a solid product after completion, and obtaining modified calcium carbonate for later use.
(2) The preparation method of the modified hydrotalcite comprises the following steps: the hydrotalcite was calcined at 230 ℃ for 60min, and the hydrotalcite was calcined after cooling to room temperature. Dispersing 11 parts by weight of the calcined hydrotalcite powder with the particle size of 450-500 meshes in 120 parts by weight of absolute ethyl alcohol, then adding 85 parts by weight of dimethyl diisocyanate, stirring uniformly, then adding acetic acid to adjust the pH value of the system to 10, then adding 0.27 part by weight of hexamethyldisilazane, heating and reacting at 50 ℃ for 7 hours, filtering and separating out a solid product after completion, and obtaining the modified hydrotalcite for later use.
(3) Preparing a component A: polyether 4110b 65 parts by weight, DL-2000 elastomer polyether 10 parts by weight, triethylene diamine 1.2 parts by weight, and water-soluble silicone oil 2.3 parts by weight were weighed. Mixing the above components, stirring for 1.5 hr to obtain component A.
(4) B, preparation of a component: taking 25 parts by weight of the modified calcium carbonate particles and 11 parts by weight of the modified hydrotalcite particles, dispersing the modified calcium carbonate particles and the modified hydrotalcite particles in 150 parts by weight of water, and stirring for 30min to form a suspension for later use.
(5) And (3) uniformly mixing the component A and the component B according to the mass ratio of 100.
Example 3
A method of preparing a foamed polymer for use in a barrier breach comprising the steps of:
(1) The preparation method of the modified calcium carbonate comprises the following steps: dispersing 17 parts by weight of calcium carbonate powder with the particle size of 300-400 meshes in 140 parts by weight of absolute ethyl alcohol, adding 94 parts by weight of dimethyl diisocyanate, uniformly stirring, adding acetic acid to adjust the pH value of the system to 8, adding 0.42 part by weight of silane coupling agent KH-570, heating at 50 ℃ for reaction for 7 hours, filtering after completion, and separating out a solid product to obtain the modified calcium carbonate for later use.
(2) The preparation method of the modified hydrotalcite comprises the following steps: the hydrotalcite was calcined at 270 ℃ for 40min, and the hydrotalcite was calcined after cooling to room temperature. Dispersing 17 parts by weight of the calcined hydrotalcite powder with the particle size of 300-400 meshes in 140 parts by weight of absolute ethyl alcohol, adding 94 parts by weight of dimethyl diisocyanate, stirring uniformly, adding acetic acid to adjust the pH value of the system to 8, adding 0.42 part by weight of silane coupling agent KH-570, heating at 65 ℃ for reaction for 4 hours, filtering to separate a solid product after the reaction is finished, and obtaining the modified hydrotalcite for later use.
(3) Preparation of a component A: polyether 4110c 78 parts, ED-28 elastomer polyether 14 parts, triethylene diamine 1.7 parts and water-soluble silicone oil 5 parts are weighed. Mixing the above components, stirring for 2 hr to obtain component A.
(4) B, preparation of a component: taking 37 parts by weight of the modified calcium carbonate particles and 7 parts by weight of the modified hydrotalcite particles, dispersing the modified calcium carbonate particles and the modified hydrotalcite particles in 210 parts by weight of water, and stirring for 40min to form a suspension for later use.
(5) And (3) uniformly mixing the component A and the component B according to the mass ratio of 100.
Example 4
A method of preparing a foamed polymer for use in a barrier breach comprising the steps of:
(1) The preparation method of the modified calcium carbonate comprises the following steps: dispersing 15 parts by weight of calcium carbonate powder with the particle size of 400-500 meshes in 135 parts by weight of absolute ethyl alcohol, then adding 88 parts by weight of dimethyl diisocyanate, stirring uniformly, then adding acetic acid to adjust the pH value of the system to 9, heating at 60 ℃ for reaction for 5 hours, filtering and separating out a solid product after the reaction is finished, and obtaining the modified calcium carbonate for later use.
(2) The preparation method of the modified hydrotalcite comprises the following steps: the hydrotalcite was calcined at 265 ℃ for 45min, cooled to room temperature and calcined. Dispersing 15 parts by weight of the calcined hydrotalcite powder with the particle size of 400-500 meshes in 135 parts by weight of absolute ethyl alcohol, then adding 88 parts by weight of dimethyl diisocyanate, stirring uniformly, then adding acetic acid to adjust the pH value of the system to 9, heating and reacting for 5 hours at 60 ℃, filtering and separating out a solid product after completion, thus obtaining the modified hydrotalcite for later use.
(3) Preparation of a component A: polyether 4110a 74 parts by weight, DL-2000 elastomer polyether 12 parts by weight, triethylene diamine 1.4 parts by weight and water-soluble silicone oil 3 parts by weight are weighed. Mixing the components and stirring for 2 hours to obtain the component A for later use.
(4) B, preparation of a component: taking 31 parts by weight of the modified calcium carbonate particles and 8 parts by weight of the modified hydrotalcite particles, dispersing the modified calcium carbonate particles and the modified hydrotalcite particles in 190 parts by weight of water, and stirring for 30min to form a suspension for later use.
(5) And uniformly mixing the component A and the component B according to the mass ratio of 100.
Example 5
A method of preparing a foamed polymer for use in a barrier breach comprising the steps of:
(1) The preparation method of the modified calcium carbonate comprises the following steps: dispersing 11 parts by weight of calcium carbonate powder with the particle size of 450-500 meshes in 120 parts by weight of anhydrous methanol, adding 85 parts by weight of dimethyl diisocyanate, uniformly stirring, adding acetic acid to adjust the pH value of the system to 10, adding 0.27 part by weight of silane coupling agent KH-560, heating at 50 ℃ for reaction for 7 hours, filtering and separating out a solid product after the reaction is finished, thereby obtaining the modified calcium carbonate for later use.
(2) The preparation method of the modified hydrotalcite comprises the following steps: dispersing 11 parts by weight of hydrotalcite powder with the particle size of 450-500 meshes in 120 parts by weight of absolute ethyl alcohol, adding 85 parts by weight of dimethyl diisocyanate, uniformly stirring, adding acetic acid to adjust the pH value of a system to 10, adding 0.27 part by weight of silane coupling agent KH-570, heating at 50 ℃ for reaction for 7 hours, filtering and separating out a solid product after the reaction is finished, and obtaining the modified hydrotalcite for later use.
(3) Preparation of a component A: polyether 4110b 65 parts by weight, DL-2000 elastomer polyether 10 parts by weight, triethylene diamine 1.2 parts by weight, and water-soluble silicone oil 2.3 parts by weight were weighed. Mixing the components and stirring for 1.5 hours to obtain the component A for later use.
(4) B, preparation of a component: taking 25 parts by weight of the modified calcium carbonate particles and 11 parts by weight of the modified hydrotalcite particles, dispersing the modified calcium carbonate particles and the modified hydrotalcite particles in 150 parts by weight of water, and stirring for 30min to form a suspension for later use.
(5) And (3) uniformly mixing the component A and the component B according to the mass ratio of 100.
Example 6
A method of preparing a foamed polymer for use in barrier breaching, comprising the steps of:
(1) The preparation method of the modified hydrotalcite comprises the following steps: the hydrotalcite was calcined at 270 ℃ for 40min and cooled to room temperature. Dispersing 17 parts by weight of the calcined hydrotalcite powder with the particle size of 300-400 meshes in 140 parts by weight of absolute ethyl alcohol, adding 94 parts by weight of dimethyl diisocyanate, stirring uniformly, adding acetic acid to adjust the pH value of the system to 8, adding 0.42 part by weight of silane coupling agent KH-570, heating at 65 ℃ for reaction for 4 hours, filtering to separate a solid product after the reaction is finished, and obtaining the modified hydrotalcite for later use.
(2) Preparing a component A: polyether 4110c 78 parts, ED-28 elastomer polyether 14 parts, triethylene diamine 1.7 parts and water-soluble silicone oil 5 parts are weighed. Mixing the above components, stirring for 2 hr to obtain component A.
(3) B, preparation of a component: 44 parts by weight of the modified hydrotalcite fine particles were dispersed in 210 parts by weight of water and stirred for 40min to form a suspension for use.
(4) And (3) uniformly mixing the component A and the component B according to the mass ratio of 100.
The foamed polymers prepared in the above examples were tested for expansion factor, compressive strength, flame retardancy (oxygen index) and foaming completion time, and the results are shown in table 1. From the test results, the performance indexes of the foamed polymers prepared in the embodiments 1 to 3 are better than those of the embodiments 4 to 6, so that the foamed polymers prepared in the embodiments 1 to 3 can be used for quickly filling, covering, wrapping and isolating obstacles, and the flexible obstacle breaking mode is higher in efficiency and better in effect.
TABLE 1
| Example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Example 6 | |
| Expansion factor | 41.7 | 38.4 | 44.8 | 31.3 | 37.9 | 43.6 |
| Compressive strength/MPa | 83.29 | 78.44 | 86.71 | 61.32 | 65.07 | 50.83 |
| Oxygen index/% | V-0 | V-0 | V-0 | V-1 | V-2 | V-1 |
| Hardening and foaming completion time/second | 47 | 34 | 39 | 76 | 53 | 61 |
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A foamed polymer for breaking barriers is characterized by comprising 100 parts of a component A and 115 to 123 parts of a component B in parts by weight; wherein: the component A comprises: 65 to 78 parts of hard bubble polyether, 10 to 14 parts of elastomer polyether, 1.2 to 1.7 parts of triethylene diamine and 2.3 to 5 parts of water-soluble silicone oil; the component B comprises: the modified calcium carbonate is calcium carbonate coupled with dimethyl diisocyanate, the modified hydrotalcite is hydrotalcite coupled with dimethyl diisocyanate, and the hydrotalcite is calcined, wherein the modified calcium carbonate is 25-37 parts of modified calcium carbonate particles and 7-11 parts of modified hydrotalcite particles are dispersed in 150-210 parts of water.
2. The barrier breach foam polymer of claim 1, wherein said rigid foam polyether comprises any one of polyether 4110a, polyether 4110b, polyether 4110c, and polyether NH 4201.
3. The barrier breach foam polymer of claim 1, wherein said elastomeric polyether comprises any one of DL-2000 elastomeric polyether, DL-3000 elastomeric polyether, ED-28 elastomeric polyether.
4. The foamed polymer for barrier breach according to claim 1, wherein the modified calcium carbonate is formed by coupling dimethyl diisocyanate onto calcium carbonate through a silane coupling agent; or the modified hydrotalcite is formed by coupling dimethyl diisocyanate on calcined hydrotalcite through a silane coupling agent.
5. The foamed polymer for barrier breach according to claim 4, wherein the modified calcium carbonate or the modified hydrotalcite is prepared by: dispersing calcium carbonate powder or calcined hydrotalcite powder in absolute ethyl alcohol or absolute methanol, adding the dimethyl diisocyanate, adjusting the pH of the system to be alkaline, adding a silane coupling agent, carrying out heating reaction, and separating out a solid product to obtain modified calcium carbonate or modified hydrotalcite; preferably, the calcining temperature is 230 to 270 ℃, and the time is 40 to 60min.
6. The barrier-breaking foamed polymer according to claim 5, wherein the calcium carbonate powder or hydrotalcite powder is in an amount of 11 to 17 parts by weight, the absolute ethyl alcohol or absolute methyl alcohol is in an amount of 120 to 140 parts by weight, the dimethyl diisocyanate is in an amount of 85 to 94 parts by weight, and the silane coupling agent is in an amount of 0.27 to 0.42 part by weight.
7. The barrier-breaking foamed polymer according to claim 5, wherein the temperature of the heating reaction is 50 to 65 ℃ for 4 to 7 hours.
8. The barrier-breaching foam polymer according to any one of claims 1 to 7, wherein said silane coupling agent comprises a silane coupling agent KH-550 or a silane coupling agent KH-560, preferably, said pH =8 to 10.
9. A method of preparing a foamed polymer for a barrier according to any one of claims 1 to 8, comprising the steps of: mixing all the components in the component A and then uniformly stirring; and then mixing the component B with the component A until foaming is finished, thus obtaining the foamed polymer.
10. The method for preparing a foamed polymer for barrier breach as claimed in claim 9, wherein the components a and B are mixed and sprayed on the barrier, and the foamed polymer is formed after the components react, thereby completing the filling, covering, wrapping or isolating effect on the barrier.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130224467A1 (en) * | 2010-08-31 | 2013-08-29 | Nitto Denko Corporation | Foam, production method for foam, and functional foam |
| CN104194603A (en) * | 2014-09-12 | 2014-12-10 | 上海东方雨虹防水技术有限责任公司 | Polycarbonate polyurethane water-proof paint |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130224467A1 (en) * | 2010-08-31 | 2013-08-29 | Nitto Denko Corporation | Foam, production method for foam, and functional foam |
| CN104194603A (en) * | 2014-09-12 | 2014-12-10 | 上海东方雨虹防水技术有限责任公司 | Polycarbonate polyurethane water-proof paint |
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