CN110951232A - Special multifunctional water absorption auxiliary agent for water absorption rubber and preparation method thereof - Google Patents
Special multifunctional water absorption auxiliary agent for water absorption rubber and preparation method thereof Download PDFInfo
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- CN110951232A CN110951232A CN201911258296.6A CN201911258296A CN110951232A CN 110951232 A CN110951232 A CN 110951232A CN 201911258296 A CN201911258296 A CN 201911258296A CN 110951232 A CN110951232 A CN 110951232A
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- 229920001971 elastomer Polymers 0.000 title claims abstract description 58
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 238000010521 absorption reaction Methods 0.000 title claims abstract description 40
- 239000012752 auxiliary agent Substances 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000006229 carbon black Substances 0.000 claims abstract description 20
- 239000000440 bentonite Substances 0.000 claims abstract description 16
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 16
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000004094 surface-active agent Substances 0.000 claims abstract description 7
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 16
- 239000000194 fatty acid Substances 0.000 claims description 16
- 229930195729 fatty acid Natural products 0.000 claims description 16
- -1 glycerin fatty acid ester Chemical class 0.000 claims description 16
- 229940092782 bentonite Drugs 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 10
- 229920001223 polyethylene glycol Polymers 0.000 claims description 10
- 239000000654 additive Substances 0.000 claims description 8
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims description 8
- DNIAPMSPPWPWGF-UHFFFAOYSA-N monopropylene glycol Natural products CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 7
- 239000002202 Polyethylene glycol Substances 0.000 claims description 6
- 230000000996 additive effect Effects 0.000 claims description 6
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 6
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 6
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 6
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerol Natural products OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 4
- 235000021355 Stearic acid Nutrition 0.000 claims description 4
- 229930006000 Sucrose Natural products 0.000 claims description 4
- 235000011187 glycerol Nutrition 0.000 claims description 4
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 4
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 4
- 239000008117 stearic acid Substances 0.000 claims description 4
- 239000005720 sucrose Substances 0.000 claims description 4
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims description 3
- 235000011130 ammonium sulphate Nutrition 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims description 3
- IGFHQQFPSIBGKE-UHFFFAOYSA-N Nonylphenol Natural products CCCCCCCCCC1=CC=C(O)C=C1 IGFHQQFPSIBGKE-UHFFFAOYSA-N 0.000 claims description 2
- 239000008118 PEG 6000 Substances 0.000 claims description 2
- 229920002535 Polyethylene Glycol 1500 Polymers 0.000 claims description 2
- 229920002560 Polyethylene Glycol 3000 Polymers 0.000 claims description 2
- 229920001030 Polyethylene Glycol 4000 Polymers 0.000 claims description 2
- 229920002584 Polyethylene Glycol 6000 Polymers 0.000 claims description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 2
- 150000004996 alkyl benzenes Chemical class 0.000 claims description 2
- 229940077388 benzenesulfonate Drugs 0.000 claims description 2
- 229910000281 calcium bentonite Inorganic materials 0.000 claims description 2
- ONCZQWJXONKSMM-UHFFFAOYSA-N dialuminum;disodium;oxygen(2-);silicon(4+);hydrate Chemical compound O.[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Na+].[Na+].[Al+3].[Al+3].[Si+4].[Si+4].[Si+4].[Si+4] ONCZQWJXONKSMM-UHFFFAOYSA-N 0.000 claims description 2
- SNQQPOLDUKLAAF-UHFFFAOYSA-N nonylphenol Chemical compound CCCCCCCCCC1=CC=CC=C1O SNQQPOLDUKLAAF-UHFFFAOYSA-N 0.000 claims description 2
- 229910000280 sodium bentonite Inorganic materials 0.000 claims description 2
- 229940080314 sodium bentonite Drugs 0.000 claims description 2
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 2
- 235000011152 sodium sulphate Nutrition 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 239000002131 composite material Substances 0.000 abstract description 23
- 239000000463 material Substances 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 206010020751 Hypersensitivity Diseases 0.000 abstract description 4
- 208000026935 allergic disease Diseases 0.000 abstract description 4
- 230000007815 allergy Effects 0.000 abstract description 4
- 238000004513 sizing Methods 0.000 abstract description 2
- 229920005989 resin Polymers 0.000 description 17
- 239000011347 resin Substances 0.000 description 17
- 239000002250 absorbent Substances 0.000 description 15
- 238000002156 mixing Methods 0.000 description 7
- PYSRRFNXTXNWCD-UHFFFAOYSA-N 3-(2-phenylethenyl)furan-2,5-dione Chemical compound O=C1OC(=O)C(C=CC=2C=CC=CC=2)=C1 PYSRRFNXTXNWCD-UHFFFAOYSA-N 0.000 description 4
- 229920000147 Styrene maleic anhydride Polymers 0.000 description 4
- LFULEKSKNZEWOE-UHFFFAOYSA-N propanil Chemical compound CCC(=O)NC1=CC=C(Cl)C(Cl)=C1 LFULEKSKNZEWOE-UHFFFAOYSA-N 0.000 description 4
- 238000004073 vulcanization Methods 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 229920002126 Acrylic acid copolymer Polymers 0.000 description 1
- 239000004342 Benzoyl peroxide Substances 0.000 description 1
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 1
- 229920001730 Moisture cure polyurethane Polymers 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229920006322 acrylamide copolymer Polymers 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019400 benzoyl peroxide Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000012763 reinforcing filler Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000000967 suction filtration Methods 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 235000012222 talc Nutrition 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
- 239000012856 weighed raw material Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
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- 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
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/04—Ingredients characterised by their shape and organic or inorganic ingredients
-
- 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
- C08K3/34—Silicon-containing compounds
-
- 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
- C08K3/34—Silicon-containing compounds
- C08K3/346—Clay
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/10—Esters; Ether-esters
- C08K5/101—Esters; Ether-esters of monocarboxylic acids
- C08K5/103—Esters; Ether-esters of monocarboxylic acids with polyalcohols
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- 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
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
- C08K7/26—Silicon- containing compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L21/00—Compositions of unspecified rubbers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
- C08L71/02—Polyalkylene oxides
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/08—Polymer mixtures characterised by other features containing additives to improve the compatibility between two polymers
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Abstract
The invention belongs to the field of water-absorbing rubber, and particularly relates to a special multifunctional auxiliary agent for water-absorbing rubber and a preparation method thereof, wherein the auxiliary agent comprises the following components in parts by mass: 15-40 parts of white carbon black, 5-30 parts of bentonite, 5-30 parts of hydrophilic and oleophilic compatibilizer, 2-10 parts of surfactant and 1-5 parts of separant. The auxiliary agent is convenient and pollution-free, green and environment-friendly, has good dispersibility, can improve the strength of sizing materials, reduce the production cost of the water-absorbing rubber composite material, and solve the problems of poor water absorption performance, low water absorption rate, unstable quality, allergy of workers and the like of the water-absorbing rubber composite material product.
Description
Technical Field
The invention belongs to the field of water-absorbent rubber, and particularly relates to a special multifunctional auxiliary agent for water-absorbent rubber and a preparation method thereof.
Background
The water-absorbing rubber composite material is obtained by mixing and vulcanizing water-absorbing resin, water-absorbing polyurethane material and the like with rubber. Because the water-absorbing agent has certain water absorption multiplying power and can absorb water repeatedly, the water-absorbing agent can be used for the water prevention, water stopping and leakage stopping of civil and architectural engineering such as railways, highways, urban subways, house construction and the like, and the sealing of water pipe joints and other related fields. The general processing method of the water-absorbing rubber is that the weighed raw materials are put into an internal mixer for mixing, and after the raw materials are vulcanized by an open mill, the raw materials are extruded and molded by an extruder, and then the raw materials are vulcanized and molded by an oven. The size of the composite material can be designed into different thicknesses and widths according to requirements.
The water absorption rate of the water-absorbent rubber depends on the content of the water-absorbent resin, the vulcanization degree, and the influence of the reinforcing filler system. At the same time, the rate of absorption of water by the article is also affected by its size, the thicker the article, the longer it takes for the water to reach saturation. In actual production, the water-absorbing polyurethane prepolymer material can cause allergy phenomenon of workshop workers, and has large influence on human bodies; the water-absorbent rubber composite material has little influence on human bodies due to the adoption of water-absorbent resin. However, the current water-absorbing rubber materials adopting water-absorbing resin have the problem that the water-absorbing rubber materials are difficult to quickly reach the water-absorbing equilibrium state for thick products (generally about 10mm in size), so the water-absorbing effect is not ideal. In order to improve the problem of the water absorption rate of the water-absorbent rubber composite material of a thick product, a water-absorbent aid is often added, but the traditional aid has a single function and is difficult to meet the requirements of the water-absorbent rubber composite material.
Disclosure of Invention
Aiming at the problems, the invention provides the special multifunctional water-absorbing auxiliary agent for the water-absorbing rubber and the preparation method thereof, the auxiliary agent is convenient, pollution-free, green and environment-friendly, has good dispersibility, can improve the strength of a sizing material, reduce the production cost of the water-absorbing rubber composite material, and solves the problems of poor water-absorbing performance, slow water-absorbing rate, unstable quality, allergy to workers and the like of the water-absorbing rubber composite material product.
The technical scheme of the invention is as follows: the composition comprises the following components in parts by mass: 15-40 parts of white carbon black, 5-30 parts of bentonite, 5-30 parts of hydrophilic and oleophilic compatibilizer, 2-10 parts of surfactant and 1-5 parts of separant.
Preferably, the white carbon black is precipitated white carbon black, and the white carbon black is filled into the mixture as a matrix, so that the mechanical property of the water-absorbing rubber composite material is improved. The precipitated white carbon black is cheap and easy to obtain and has good processing performance.
Preferably, the mesh number of the precipitated silica is 100 meshes to 500 meshes. If the mesh number is too large, the dispersibility of the white carbon black is not good, and if the mesh number is too small, the reinforcing property of the white carbon black is low.
Preferably, the bentonite is one or two of sodium bentonite and calcium bentonite, and the function of the bentonite can improve the water absorption performance of the water-absorbing rubber.
Preferably, the mesh number of the bentonite is 800-2000 meshes.
Preferably, the hydrophilic lipophilic compatibilizer is one or more of glycerin fatty acid ester, sucrose fatty acid ester, sorbitan fatty acid ester, propylene glycol fatty acid ester, nonylphenol polyethylene glycol ether polyurethane, linear alkyl benzene sulfonate, fatty alcohol-polyoxyethylene ether sodium sulfate and fatty alcohol-polyoxyethylene ether ammonium sulfate. The hydrophilic and oleophilic compatibilizer can improve the binding force of the water-absorbent resin to rubber, increase the compatibility of hydrophilic substances and a rubber matrix, and simultaneously reduce the precipitation of the water-absorbent rubber after water absorption.
Preferably, the surfactant is one or a mixture of polyethylene glycol and stearic acid. The function of the rubber compound can improve the vulcanization speed of the rubber compound and the production efficiency.
Preferably, the polyethylene glycol is one of PEG1500, PEG2000, PEG3000, PEG4000, PEG 6000.
Preferably, the separant is one or a mixture of ultrafine talcum powder and zinc stearate, and the separant can improve the dispersibility of the water absorption aid.
Preferably, the mesh number of the superfine talcum powder is 1000 meshes to 3000 meshes. The price is increased due to too large mesh number; too small a mesh size does not serve as a discrete barrier.
The preparation method comprises the following steps: placing the hydrophilic oleophylic compatibilizer in an oven to be dried for 1-2 hours at the temperature of 20-30 ℃, taking the white carbon black, the bentonite, the surfactant, the separant and the dried hydrophilic oleophylic compatibilizer according to the formula ratio, sending the components into a high-speed mixer to be mixed and stirred for 3-8 s, controlling the stirring speed of the mixer to be 15000-25000r/min, and discharging to obtain the special multifunctional water-absorbing auxiliary agent for the nonpolar water-absorbing rubber.
The invention has the beneficial effects that: the multifunctional water absorption auxiliary agent special for the water absorption rubber is adopted, the water absorption rate of the water absorption rubber is improved, the addition amount of the water absorption resin can be reduced to a certain degree, the mechanical property of the water absorption rubber is effectively improved, the compatibility of the water absorption resin and a base material is increased, the dispersion of the water absorption resin is promoted, the precipitation of the water absorption resin is reduced, the viscosity of a composite material system is reduced, the fluidity is improved, the processing performance of the composite material is improved, and the white carbon black is adopted as a base body to be filled into a mixture, so that the mechanical property of the water absorption rubber composite material.
Detailed Description
The present invention will be described in further detail with reference to the following examples, but it should not be construed that the scope of the above subject matter is limited to the following examples. All the technologies realized based on the above contents of the present invention belong to the scope of the present invention, and the following embodiments are all completed by adopting the conventional prior art except for the specific description. In the examples, the mesh number of the precipitated silica is 100-500 meshes, the mesh number of the ultra-fine talc is 1000-3000 meshes, and the mesh number of the bentonite is 800-2000 meshes.
Example 1
Firstly, putting glycerin fatty acid ester in an oven at 20 ℃ for 2 hours, then, sending 375g of white carbon black, 750g of bentonite, 1500250 g of PEG, 125g of superfine talcum powder and 1000g of baked glycerin fatty acid ester into a high-speed mixer for mixing and stirring for 8s, controlling the stirring speed of the stirrer to be 15000r/min, and then discharging to obtain the multifunctional water-absorbing auxiliary agent.
Example 2
Placing propylene glycol fatty acid ester in an oven at 25 ℃ for 1 hour, feeding 625g of white carbon black, 500g of bentonite, 4000200 g g of PEG, 100g of superfine talcum powder and 625g of baked propylene glycol fatty acid ester into a high-speed mixer, mixing and stirring for 3s, controlling the stirring speed of the mixer to be 25000r/min, and discharging to obtain the multifunctional water-absorbing auxiliary agent.
Example 3
Placing sucrose fatty acid ester in an oven at 25 ℃ for 1.5 hours, feeding 1000g of white carbon black, 125g of bentonite, 600050 g of PEG, 60g of superfine talcum powder and 375g of baked sucrose fatty acid ester into a high-speed mixer, mixing and stirring for 5s, controlling the stirring speed of the stirrer to be 20000r/min, and discharging to obtain the multifunctional water-absorbing additive.
Example 4
Placing sorbitan fatty acid ester in an oven at 25 ℃ for 1.5 hours, feeding 750g of white carbon black, 375g of bentonite, 200g of stearic acid, 80g of superfine talcum powder and 250g of baked sorbitan fatty acid ester into a high-speed mixer, mixing and stirring for 5s, controlling the stirring speed of the stirrer to be 20000r/min, and then discharging to obtain the multifunctional water-absorbing auxiliary agent.
Example 5
Placing fatty alcohol-polyoxyethylene ether ammonium sulfate in an oven at 25 ℃ for 1.5 hours, feeding 625g of white carbon black, 500g of bentonite, PEG 4000160 g, 25g of zinc stearate and 125g of baked polyoxyethylene ether into a high-speed mixer, mixing and stirring for 5s, controlling the stirring speed of the stirrer to 20000r/min, and discharging to obtain the multifunctional water-absorbing auxiliary agent.
Comparative example 1
Preparation of compatibilizer styrene-maleic anhydride (STAM)
25ml of benzene, 1.8g of styrene, 1.7g of maleic anhydride and 0.02g of benzoyl peroxide were placed in a three-necked flask equipped with a thermometer, stirrer and reflux condenser, and the reaction mixture was stirred at room temperature until it was completely dissolved to give a transparent solution. And (3) reacting for one hour at the temperature of 85-90 ℃, stopping heating, cooling the mixture to room temperature, and performing suction filtration to obtain a white powdery product. Vacuum drying at 60 deg.C, and grinding.
Test of
The water-absorbing resin can be selected from high water-absorbing resin such as polyacrylate, polyacrylamide, polyvinyl alcohol, acrylic acid/acrylamide copolymer, etc., and the adopted water-absorbing resin has no influence on human body and is harmless.
100 parts of NR rubber, 50 parts of water-absorbent resin, 5 parts of zinc oxide, 1 part of stearic acid, 10 parts of plasticizer and 2.5 parts of vulcanization system are proportioned according to the weight parts, 7 groups are weighed, 25 parts of the multifunctional additives of examples 1-5 are respectively added into the a, b, c, d and e groups, the f group is taken as a control group without adding the multifunctional additives, 25 parts of the compatibilizer styrene-maleic anhydride (STAM) prepared in the comparative example is added into the g group, the mixture is mixed by an open mill, the mixture is parked for 8 hours, vulcanization is carried out at 160 ℃ for 8 minutes, the pressure is 10MPa, a sample with the thickness of 12.5mm is prepared, and after the sample is parked for 24 hours, the performances such as tensile strength, elongation at break, hardness, water absorption volume expansion ratio of the material and the like are tested according to the national standard GB/T18173.3-2002, and the data in the.
Compared with a sample without the multifunctional water absorption aid, the multifunctional water absorption aid special for the water absorption rubber provided by the invention has the advantages that the Mooney viscosity of the water absorption rubber composite material is reduced, the fluidity is improved, the processing performance of the composite material is improved, the tensile strength of the water absorption rubber composite material is improved, and the time required for the water absorption rubber to reach balance is obviously reduced. On the other hand, after repeated water immersion experiments, the water absorption multiplying power of the water-absorbent rubber composite material added with the special multifunctional water absorption auxiliary agent still reaches a higher level, is obviously higher than that of the water-absorbent rubber without the water-absorbent rubber, and has higher mechanical property. Compared with the compatibilizer styrene-maleic anhydride (STAM), the multifunctional water-absorbing aid special for water-absorbing rubber provided by the invention has better volume expansion ratio and shorter time for reaching balance, and after repeated water immersion experiments, the tensile strength, the elongation at break and the volume expansion ratio are higher than those of a composite material using the compatibilizer styrene-maleic anhydride (STAM).
The multifunctional water-absorbing auxiliary special for water-absorbing rubber and the preparation method thereof provided by the invention have the advantages of no pollution, environmental protection, good dispersibility, simple and convenient preparation method, no harm to human body, improved strength of rubber material, reduced production cost of water-absorbing rubber composite material, improved water-absorbing performance of water-absorbing rubber composite material product, increased water-absorbing rate, improved quality stability and capability of solving the problem of allergy of workers. The multifunctional water-absorbing auxiliary agent special for the water-absorbing rubber provided by the invention can reduce the addition amount of the water-absorbing resin to a certain extent, effectively improve the mechanical property of the water-absorbing rubber, increase the compatibility of the water-absorbing resin and a matrix material, promote the dispersion of the water-absorbing resin, reduce the precipitation of the water-absorbing resin, reduce the viscosity of a composite material system, improve the fluidity, improve the processing performance of the composite material and improve the mechanical property of the water-absorbing rubber composite material.
Claims (10)
1. The multifunctional water absorption auxiliary agent special for water absorption rubber is characterized by comprising the following components in parts by mass: 15-40 parts of white carbon black, 5-30 parts of bentonite, 5-30 parts of hydrophilic and oleophilic compatibilizer, 2-10 parts of surfactant and 1-5 parts of separant.
2. The multifunctional water-absorbing auxiliary agent special for water-absorbing rubber as claimed in claim 1, wherein the white carbon black is precipitated white carbon black.
3. The multifunctional water-absorbing additive special for water-absorbing rubber as claimed in claim 1 or 2, wherein the mesh number of the white carbon black is 100-500 meshes.
4. The multifunctional water-absorbing additive special for water-absorbing rubber according to claim 1, wherein the bentonite is one or both of sodium bentonite and calcium bentonite.
5. The multifunctional water-absorbing additive special for water-absorbing rubber as claimed in claim 1 or 4, wherein the mesh number of the bentonite is 800-2000 mesh.
6. The multifunctional water-absorbing additive special for water-absorbing rubber as claimed in claim 1, wherein the hydrophilic and lipophilic compatibilizer is one or more of glycerin fatty acid ester, sucrose fatty acid ester, sorbitan fatty acid ester, propylene glycol fatty acid ester, nonylphenol polyethylene glycol ether polyurethane, linear alkyl benzene sulfonate, fatty alcohol-polyoxyethylene ether sodium sulfate, and fatty alcohol-polyoxyethylene ether ammonium sulfate.
7. The multifunctional water absorption auxiliary agent special for water absorption rubber as claimed in claim 1, wherein the surfactant is one or a mixture of polyethylene glycol and stearic acid.
8. The preparation method of the multifunctional water absorption auxiliary agent special for water absorption rubber as claimed in claim 7, wherein the polyethylene glycol is one of PEG1500, PEG2000, PEG3000, PEG4000 and PEG 6000.
9. The multifunctional water-absorbing additive as claimed in claim 1, wherein the isolating agent is one or a mixture of ultrafine talc powder and zinc stearate, and the mesh number of the ultrafine talc powder is 1000-3000 meshes.
10. The preparation method of the special multifunctional water absorption auxiliary agent for water absorption rubber as claimed in claim 1, is characterized in that the specific preparation method comprises the following steps: placing the hydrophilic oleophylic compatibilizer in an oven to be dried for 1-2 hours at the temperature of 20-30 ℃, taking the white carbon black, the bentonite, the surfactant, the separant and the dried hydrophilic oleophylic compatibilizer according to the formula ratio, sending the components into a high-speed mixer to be mixed and stirred for 3-8 s, controlling the stirring speed of the mixer to be 15000-25000r/min, and discharging to obtain the special multifunctional water-absorbing auxiliary agent for the water-absorbing rubber.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114106424A (en) * | 2021-11-26 | 2022-03-01 | 浙江天铁实业股份有限公司 | Rubber with high water-absorption expansion rate and water-swelling property and preparation method thereof |
| CN114437418A (en) * | 2022-03-01 | 2022-05-06 | 青岛科技大学 | High-performance water-swelling rubber composite material and preparation method thereof |
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2019
- 2019-12-10 CN CN201911258296.6A patent/CN110951232A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114106424A (en) * | 2021-11-26 | 2022-03-01 | 浙江天铁实业股份有限公司 | Rubber with high water-absorption expansion rate and water-swelling property and preparation method thereof |
| CN114437418A (en) * | 2022-03-01 | 2022-05-06 | 青岛科技大学 | High-performance water-swelling rubber composite material and preparation method thereof |
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