CN113637278B - Short fiber toughened water-absorbent acrylate polymer material and preparation method thereof - Google Patents
Short fiber toughened water-absorbent acrylate polymer material and preparation method thereof Download PDFInfo
- Publication number
- CN113637278B CN113637278B CN202111094976.6A CN202111094976A CN113637278B CN 113637278 B CN113637278 B CN 113637278B CN 202111094976 A CN202111094976 A CN 202111094976A CN 113637278 B CN113637278 B CN 113637278B
- Authority
- CN
- China
- Prior art keywords
- short fiber
- water
- methacrylate
- acrylate
- stirring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- C08L33/04—Homopolymers or copolymers of esters
- C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
- C08L33/08—Homopolymers or copolymers of acrylic acid esters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1808—C8-(meth)acrylate, e.g. isooctyl (meth)acrylate or 2-ethylhexyl (meth)acrylate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/12—Esters of monohydric alcohols or phenols
- C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
- C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
- C08F220/1818—C13or longer chain (meth)acrylate, e.g. stearyl (meth)acrylate
-
- 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
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polymerisation Methods In General (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
The invention discloses a short fiber toughened water-absorbent acrylate polymer material and a preparation method thereof, wherein the polymer material is prepared from the following raw materials in parts by weight: the invention adds short fiber into the raw material, which effectively enhances the strength and toughness of the material and greatly reduces the fracture of the material and the finished product in the using process. Meanwhile, the dredging performance of the material is increased, the back-osmosis performance of the material is improved, the dryness of the finished product is greatly improved, and the product is beneficial to the physical and psychological health of consumers; the preparation method comprises the steps of preparing an oil phase and a water phase, emulsifying, adding short fibers, adding an initiator, curing by steam, washing and drying, creatively applies a short fiber mixed polymerization and emulsification technology to replace the traditional wood pulp and SAP, improves the safety of products, protects the green ecology and the environment, improves the dryness, enhances the strength and the toughness of the products and improves the production efficiency.
Description
Technical Field
The invention relates to a water-absorbing material, in particular to a water-absorbing acrylate polymer material and a preparation method thereof.
Background
With the development of economy and the improvement of living standard, the consumption demand of people for disposable sanitary products is more and more. Meanwhile, as the consumption concept is becoming more mature and open, consumers want to use more comfortable and safe products.
The common disposable absorbent products such as sanitary towels and paper diapers all use the mode of mixing wood pulp or dust-free paper with SAP (super absorbent polymer) as an absorbent material, and the SAP is in a particle form, so that particles are easy to transfer to the surface of a product through a surface layer in the using process of the sanitary towels, and the main component of the SAP is an acrylate substance, and the SAP is formed by chemical processing, has a certain proportion of chemical residues, is in a gel form after absorbing water, and can bring potential safety risks to consumers if being transferred to the surface or the interior of a human body.
In addition, in the production process of the absorbent material containing the SAP, the SAP is easy to fall and disperse, the environmental pollution is caused, the foreign matters are easy to be absorbed by operators, the health is damaged, and meanwhile, wood pulp is made of plants such as trees, so that the resource regeneration and the environmental protection are negatively affected by a large amount of felling and consumption.
In view of the above factors, some manufacturers develop and apply acrylic foam materials to replace fluff pulp and SAP, but the strength and toughness of such materials are poor, the breaking strength is below 3N/25mm, the materials are easy to break during use, the use of products is affected, and meanwhile, the materials are easy to break during mechanized continuous mass production, and the quality and efficiency are affected.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a short fiber toughened water-absorbent acrylate polymer material and a preparation method thereof.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a short fiber toughened water-absorbent acrylate high polymer material is prepared from the following raw materials in parts by weight: 2-5 parts of acrylate monomer, 0.2-3 parts of emulsifier, 0.1-1 part of short fiber, 0.2-2 parts of initiator and 89-97.5 parts of electrolyte solution.
The acrylate monomer consists of a skeleton monomer and a crosslinking monomer, wherein the skeleton monomer is a combination of two or more of methyl methacrylate, ethyl dimethacrylate, butyl methacrylate, isobutyl methacrylate, hexyl methacrylate, lauryl methacrylate, isobornyl methacrylate, cyclohexyl methacrylate, isooctyl methacrylate, n-decyl methacrylate, isodecyl methacrylate, tetradecyl methacrylate, octadecyl methacrylate, isooctyl acrylate, n-decyl acrylate, isodecyl acrylate, tetradecyl acrylate and octadecyl acrylate; the crosslinking monomer is one or the combination of more than one of 1, 6-hexanediol diacrylate, 1, 4-butanediol dimethacrylate, trimethylolpropane triacrylate, trimethylolpropane trimethacrylate, 1, 12-dodecyl dimethacrylate, 1, 14-tetradecanediol dimethacrylate, ethylene glycol dimethacrylate and neopentyl triacrylate.
The short fiber is one or a mixture of two of polyethylene/polypropylene composite short fiber, polypropylene short fiber, polyester fiber, viscose fiber and wood fiber in any proportion.
The length of the short fiber is 2-10mm, and the fineness of the short fiber is 1-5D.
The emulsifier is a water-in-oil emulsifier with HLB value of 3-6; the initiator is one of ammonium persulfate, sodium persulfate or potassium persulfate.
The electrolyte solution is calcium chloride solution or sodium chloride solution, and the concentration of the electrolyte solution is 1-4%.
A method for preparing the polymer material comprises the following steps:
(1) Preparing an oil phase: heating an oil phase mixing pot to 45-55 ℃, simultaneously putting the acrylate monomers and the emulsifier in parts by weight into the pot, and starting stirring at the stirring speed of 100-800 r/min for 15-30 min to obtain an oil phase for later use.
(2) And preparing a water phase: adding calcium chloride and water into the water phase mixing pot, starting stirring at the stirring speed of 30-50 r/min for 15-30 min until the calcium chloride and the water are fully dissolved to obtain a water phase for later use.
(3) And emulsification: transferring the water phase into a high-speed homogenizing emulsifying pot, heating to 75-80 deg.C, stirring at 1100-1300 rpm, gradually dripping oil phase via a flow injection device, starting homogenizing emulsifying machine at 8000-10000 rpm, homogenizing and emulsifying for 5-10 min to obtain primary emulsion.
(4) Adding short fibers: and (3) closing the homogenizing emulsifying machine, continuously stirring the primary emulsion at the stirring speed of 1100-1300 rpm, adding short fibers in three times in equal amount, and keeping stirring for 20-30 minutes to obtain mixed emulsion.
(5) And adding an initiator: adding an initiator into the mixed emulsion to enable the emulsion to be subjected to cross-linking polymerization, and keeping stirring at the stirring speed of 1100-1300 rpm until a viscous polymerization emulsion is formed.
(6) And (3) steam curing: transferring the polymerized emulsion into a forming die and carrying out steam curing at the temperature of 100-120 ℃ for 5-20 minutes.
(7) And washing: and washing the material subjected to steam curing by using deionized water mixed with a surfactant solution, and then washing by using deionized water to remove residual monomers.
(8) And drying: transferring the washed material to a negative pressure high temperature drying pan for drying and dehydration for 2-4 hours.
The invention has the beneficial effects that: the invention adds short fibers in the raw materials, effectively enhances the strength and toughness of the material, and greatly reduces the fracture of the material and the finished product in the using process. Meanwhile, the dredging performance of the material is increased, the back-osmosis performance of the material is improved, the dryness of the finished product is greatly improved, and the product is beneficial to the physical and psychological health of consumers; the scheme creatively applies the short fiber mixed polymerization emulsification technology on the preparation method, replaces the traditional wood pulp and SAP, improves the safety of products, protects the green ecology and the environment, improves the dryness, enhances the strength and the toughness of the products and improves the production efficiency.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic process flow diagram of the present invention.
Detailed Description
In the present example, the temperature and pressure are not particularly emphasized, and they are both normal temperature and normal pressure.
Referring to fig. 1, a short fiber toughened water-absorbent acrylate polymer material is prepared from the following raw materials in parts by weight: 2-5 parts of acrylate monomer, 0.2-3 parts of emulsifier, 0.1-1 part of short fiber, 0.2-2 parts of initiator and 89-97.5 parts of electrolyte solution. The invention adds short fiber in the raw material, increases the dredging performance of the material, greatly improves the back-seepage performance of the material, greatly improves the dryness of the finished product, and is beneficial to improving the physical and mental health of consumers.
The acrylate monomer consists of a skeleton monomer and a crosslinking monomer, wherein the skeleton monomer is methyl methacrylate (chemical formula is C) 5 H 8 O 2 ) Ethyl methacrylate (chemical formula C) 6 H 10 O 2 ) Ethyl dimethacrylate (chemical formula is C) 7 H 12 O 2 ) Butyl methacrylate (chemical formula C) 8 H 14 O 2 ) Isobutyl methacrylate (chemical formula C) 8 H 14 O 2 ) Hexyl methacrylate (chemical formula C) 10 H 18 O 2 ) Lauryl methacrylate (chemical formula C) 16 H 30 O 2 ) Isobornyl methacrylate (chemical formula C) 14 H 22 O 2 ) Cyclohexyl methacrylate (chemical formula is C) 10 H 16 O 2 ) Isooctyl methacrylate (chemical formula C) 12 H 22 O 2 ) N-decyl methacrylate (chemical formula C) 14 H 26 O 2 ) Isodecyl methacrylate (chemical formula C) 14 H 26 O 2 ) Tetradecyl methacrylate (chemical formula C) 18 H 34 O 2 ) Octadecyl methacrylate (chemical formula C) 22 H 43 O 2 ) Isooctyl acrylate (chemical formula is C) 11 H 20 O 2 ) N-decyl acrylate (chemical formula C) 13 H 24 O 2 ) Isodecyl acrylate (chemical formula C) 13 H 24 O 2 ) Tetradecyl acrylate (chemical formula C) 17 H 32 O 2 ) And octadecyl acrylate (formula C) 21 H 40 O 2 ) Two or a combination of two or more of (a); the crosslinking monomer is 1, 6-hexanediol diacrylate (chemical formula is C) 12 H 18 O 4 ) 1, 4-butanediol dimethacrylate (chemical formula C) 12 H 18 O 4 ）、Trimethylolpropane triacrylate (chemical formula C) 15 H 20 O 6 ) Trimethylolpropane trimethacrylate (chemical formula is C) 18 H 26 O 6 ) 1, 12-dodecyl dimethacrylate (formula C) 20 H 34 O 4 ) 1, 14-tetradecanediol dimethacrylate (chemical formula C) 22 H 38 O 4 ) Ethylene glycol dimethacrylate (molecular formula is C) 10 H 14 O 4 ) And neopentyl triacrylate (formula C) 8 H 14 O 2 ) One or a combination of more than one of them. The skeleton monomer accounts for 50-80% of the total amount of the acrylate monomer; the crosslinking monomer accounts for 20-50% of the total amount of the acrylate monomer.
The short fiber accounts for 0.1-1% of the mass ratio of the polymerization solution, the short fiber is one or two of polyethylene/polypropylene composite short fiber (PE/PP concentric composite fiber), polypropylene short fiber (PP short fiber), polyester fiber (PET fiber), viscose fiber and wood fiber which are mixed in any proportion, and can be various and freely controlled according to actual requirements, the length of the short fiber is 2-10mm, and the fineness of the short fiber is 1-5D.
The emulsifier is a water-in-oil emulsifier with HLB value of 3-6, the emulsifier used in this example is diglycerol isostearate (73296-86-2 dispersant manufactured by Wuhan eosin Biotech Co., ltd.), and the initiator is ammonium persulfate (chemical formula (NH) 4 ) 2 S 2 O 8 ) Sodium persulfate (chemical formula is Na) 2 S 2 O 8 ) Or potassium persulfate (chemical formula K) 2 S 2 O 8 ) To (3) is provided.
The electrolyte solution is calcium chloride (chemical formula is CaCl) 2 ) The electrolyte solution is a solution or a sodium chloride (chemical formula is NaCl) solution, the solvent adopts distilled water or purified water, and the concentration of the electrolyte solution is 1-4%.
A method for preparing the short fiber toughened water-absorbent acrylate polymer material comprises the following steps:
(1) Preparing an oil phase: heating an oil phase mixing pot to 45-55 ℃, simultaneously putting the acrylate monomers and the emulsifier in parts by weight into the pot, and starting stirring at the stirring speed of 100-800 r/min for 15-30 min to obtain an oil phase for later use.
(2) Preparing an aqueous phase (preparing an electrolyte aqueous solution): adding weighed salt (calcium chloride is adopted in the embodiment) and water into a water phase mixing pot, preparing a 3% salt (calcium chloride) solution, starting stirring at the stirring speed of 30-50 r/min for 15-30 min until the salt is fully dissolved to obtain a water phase for later use.
(3) And (3) emulsification: transferring the water phase into a high-speed homogenizing emulsifying pot, heating to 75-80 ℃, starting stirring at the stirring speed of 1100-1300 r/min, gradually dripping the oil phase by a flow liquid injector, wherein the dripping speed is calculated according to the volume of the oil phase and is finished within 20-30 min, starting a homogenizing emulsifying machine after finishing feeding, and homogenizing and emulsifying for 5-10 min at the rotation speed of a homogenizing head of 8000-10000 r/min to obtain the primary emulsion.
(4) And adding short fibers: turning off the homogenizing emulsifying machine, continuously stirring the primary emulsion at the stirring speed of 1100-1300 rpm, gradually adding short fiber in three times at equal amount (each time is one third of the total amount), and stirring for 20-30 min to obtain mixed emulsion.
(5) And adding an initiator: adding an initiator into the mixed emulsion to ensure that the emulsion is subjected to cross-linking polymerization, and keeping stirring at the stirring speed of 1100-1300 rpm until a viscous polymerization emulsion is formed.
(6) And (3) steam curing: transferring the polymerized emulsion into a forming mold and performing steam curing at 100-120 deg.C (above 100 deg.C) for 5-20 min.
(7) And washing: washing the material after steam curing by using deionized water mixed with a surfactant solution, and then washing by using deionized water to remove residual monomers (acrylate monomers) until the content of the residual monomers meets the acceptance standard.
(8) And drying: transferring the solidified and washed material into a negative pressure high temperature drying pot for drying and dewatering, wherein the drying time is 2-4 hours (more than 2 hours) until the moisture content meets the acceptance standard, wherein the negative pressure value and the temperature are set according to the rules of instruments, and no special requirement is required.
The preparation method creatively applies short fiber blending emulsification technology to replace the traditional wood pulp and SAP, improves the safety of the product, protects the green ecology and the environment, and greatly improves the strength and the toughness besides the absorption performance of the material.
Specific example 1: 3kg of acrylate monomers (wherein 1.5kg of isooctyl acrylate, 0.7kg of butyl methacrylate and 0.8kg of ethylene glycol dimethacrylate); diglycerol isostearate (emulsifier) 0.5kg; 0.2kg of PP short fibers; ammonium persulfate (initiator) 0.3kg; 96kg of electrolyte salt aqueous solution (3% calcium chloride solution).
The process comprises the following steps:
1) Preparation of oil and aqueous phases: preparing an oil phase: heating the oil phase mixing kettle to 45-55 ℃, putting the weighed acrylate monomers and the emulsifier into the kettle, starting stirring at the stirring speed of 100-800 r/min for 15-30 min until the mixture is uniform for later use; preparing an aqueous phase: and (3) preparing 96kg of 3% calcium chloride solution in a water phase mixing pot at the rotating speed of 30-50 r/min, and stirring for 15-30 min until the calcium chloride solution is fully dissolved for later use.
2) Transferring the water phase into a high-speed homogenizing emulsifying pot, heating to 75-80 deg.C, stirring at 1100-1300 rpm, gradually dripping oil phase via a flow injection device, and starting homogenizing emulsifying machine with homogenizing head rotation speed of 8000-10000 rpm. Keeping homogenizing and emulsifying for 5-10 minutes to form primary emulsion with the same grade of dispersion and particles, then closing homogenizing, starting high-speed stirring at 1100-1300 r/min, gradually adding short fiber in three equal amounts, and keeping stirring for 20-30 minutes.
3) Adding an initiator into the mixed emulsion in the emulsifying pot to enable the emulsion to be cross-linked and polymerized, and keeping stirring until a viscous polymerized emulsion is formed.
4) The polymerized emulsion is transferred to a forming mold and cured by steam. The temperature is above 100 ℃, and the curing time is 5-20 minutes.
5) And washing the material after curing, washing the material after steam curing by using deionized water mixed with a surfactant solution, and then washing by using deionized water to remove residual monomers until the content of the residual monomers meets the acceptance standard.
6) Transferring the solidified and washed polymer into a negative pressure high temperature drying pot for drying and dehydration. And drying for more than 2 hours until the moisture content meets the acceptance standard.
The results of the main performance tests on the material obtained in example 1 are as follows:
| serial number | Main test item | Unit of measurement | Test method and execution standard | Test results |
| 1 | Water content ratio | % | Less than 9%. According to the GB/T462 method | 7.86 |
| 2 | Multiple of water absorption | Multiple times | Not less than 7 times, according to GB 8939.4 method | 13.5 |
| 3 | Amount of reverse osmosis | Keke (Chinese character of 'Keke') | Dripping 5ml of standard synthetic liquid into the center of the material, covering filter paper, pressing for 1 minute by using a pressing block with the pressure of 30g/cm < 2 >, weighing the mass difference of the filter paper | 0.08 |
| 4 | Longitudinal breaking Strength MD | N/25mm | Cutting a sample with the length of 120mm, the width of 25mm, the clamping distance of 100mm and the stretching speed of 500m/min | 6.56 |
| 5 | Transverse rupture Strength MD | N/25mm | The sample is cut to have the length of 120mm, the width of 25mm, the clamping distance of 100mm and the configuration speed of 500m/min | 3.95 |
Specific example 2: 5kg of an acrylate monomer (wherein 2.5kg of octadecyl acrylate, 0.8kg of n-octadecyl methacrylate and 1, 4-butanediol dimethacrylate is present in an amount of 2.7 kg); 1kg of diglycerol isostearate (emulsifier); 0.6kg of PP short fibers; ammonium persulfate (initiator) 0.4kg; 93kg of an electrolyte salt aqueous solution (3% calcium chloride solution).
The process comprises the following steps:
1) Preparation of oil and aqueous phases: preparing an oil phase: heating the oil phase mixing kettle to 45-55 ℃, putting the weighed acrylate monomers and the emulsifier into the kettle, starting stirring at the stirring speed of 500-1000 r/min for 30-60 min until the mixture is uniform for later use; preparing a water phase: and (3) preparing 93kg of 3% calcium chloride solution in a water phase mixing pot at the rotating speed of 30-50 r/min, and stirring for 15-30 min until the calcium chloride solution is fully dissolved for later use.
2) Transferring the water phase into a high-speed homogenizing emulsifying pot, heating to 75-80 deg.C, stirring at 1100-1300 rpm, gradually dripping oil phase via a flow injector, and starting homogenizing emulsifying machine at 8000-10000 rpm after finishing feeding. Keeping homogenizing and emulsifying for 5-10 minutes to form primary emulsion with the same grade of dispersion and particles, then closing homogenizing, starting high-speed stirring at 1100-1300 r/min, gradually adding short fiber in three equal amounts, and keeping stirring for 20-30 minutes.
3) Adding an initiator into the mixed emulsion in the emulsifying pot to enable the emulsion to be crosslinked and polymerized, and keeping stirring until viscous polymerization emulsion is formed.
4) The polymerized emulsion is transferred to a forming mold and cured by steam. The temperature is above 100 ℃, and the curing time is 5-20 minutes.
5) And washing the material after curing, washing the material after steam curing by using deionized water mixed with a surfactant solution, and then washing by using deionized water to remove residual monomers until the content of the residual monomers meets the acceptance standard.
6) Transferring the solidified and washed polymer into a negative pressure high temperature drying pot for drying and dehydration. And drying for more than 2 hours until the moisture content meets the acceptance standard.
The results of the main performance tests on the material obtained in example 2 are as follows:
| serial number | Main test item | Measurement unit | Test method and execution standard | Test results |
| 1 | Water content ratio | % | Less than 9%. According to GB/T462 method | 7.53 |
| 2 | Multiple of water absorption | Multiple times | Not less than 7 times, according to GB 8939.4 method | 16.8 |
| 3 | Amount of reverse osmosis | Gram (R) | Dripping 5ml of standard synthetic liquid into the center of the material, covering filter paper, pressing with a press block with the pressure of 30g/cm2 for 1 minute, weighing the mass difference of the filter paper | 0.06 |
| 4 | Longitudinal breaking Strength MD | N/25mm | Cutting a sample with the length of 120mm, the width of 25mm, the clamping distance of 100mm and the stretching speed of 500m/min | 7.89 |
| 5 | Transverse rupture Strength MD | N/25mm | The sample is cut to have the length of 120mm, the width of 25mm, the clamping distance of 100mm and the configuration speed of 500m/min | 5.42 |
In conclusion, two groups of experimental result data show that compared with the prior art, the dredging performance and the rewet performance of the invention are greatly improved, the dryness, the strength and the toughness of the finished product are greatly improved, the longitudinal fracture strength is more than 5N/25mm, and the transverse fracture strength is more than 3N/25 mm.
The above embodiments do not limit the scope of the present invention, and those skilled in the art can make equivalent modifications and variations without departing from the overall concept of the present invention.
Claims (4)
1. A preparation method of a short fiber toughened water-absorbent acrylate high polymer material is prepared from the following raw materials in parts by weight: 2-5 parts of acrylate monomer, 0.2-3 parts of emulsifier, 0.1-1 part of short fiber, 0.2-2 parts of initiator and 89-97.5 parts of electrolyte solution; the short fiber is one or a mixture of two of polyethylene/polypropylene composite short fiber, polypropylene short fiber, polyester fiber, viscose fiber and wood fiber in any proportion; the length of the short fiber is 2-10mm, and the fineness of the short fiber is 1-5D;
the preparation method of the short fiber toughened water-absorbent acrylate polymer material is characterized by comprising the following steps:
(1) Preparing an oil phase: heating an oil phase mixing pot to 45-55 ℃, simultaneously putting the acrylic ester monomer and the emulsifier in parts by weight into the pot, and starting stirring at the stirring speed of 100-800 revolutions per minute for 15-30 minutes to obtain an oil phase for later use;
(2) And preparing a water phase: adding calcium chloride and water into a water phase mixing pot, starting stirring at the stirring speed of 30-50 revolutions per minute for 15-30 minutes until the calcium chloride and the water are fully dissolved to obtain a water phase for later use;
(3) And emulsification: transferring the water phase into a high-speed homogenizing emulsifying pot, heating to 75-80 ℃, starting stirring at the speed of 1100-1300 rpm, gradually dripping the oil phase into the high-speed homogenizing emulsifying pot through a flow injector, starting a homogenizing emulsifying machine after finishing feeding, and carrying out homogenizing emulsification for 5-10 minutes at the rotation speed of a homogenizing head of 8000-10000 rpm to obtain primary emulsion;
(4) Adding short fibers: turning off the homogenizing emulsifying machine, continuously stirring the primary emulsion at the stirring speed of 1100-1300 rpm, adding short fiber in three times with equal amount, and stirring for 20-30 min to obtain mixed emulsion;
(5) And adding an initiator: adding an initiator into the mixed emulsion to enable the emulsion to be subjected to cross-linking polymerization, and keeping stirring at the stirring speed of 1100-1300 rpm until a viscous polymerization emulsion is formed;
(6) And (3) steam curing: transferring the polymerized emulsion into a forming die and carrying out steam curing at the temperature of 100-120 ℃ for 5-20 minutes;
(7) And washing: washing the material after steam curing by using deionized water mixed with a surfactant solution, and then washing by using deionized water to remove residual monomers;
(8) And drying: transferring the washed material to a negative pressure high temperature drying pan for drying and dehydration for 2-4 hours.
2. The method for preparing short fiber toughened water-absorbing acrylate polymer material according to claim 1, wherein the acrylate monomer is composed of a skeleton monomer and a crosslinking monomer, the skeleton monomer is two or more of methyl methacrylate, ethyl dimethacrylate, butyl methacrylate, isobutyl methacrylate, hexyl methacrylate, lauryl methacrylate, isobornyl methacrylate, cyclohexyl methacrylate, isooctyl methacrylate, n-decyl methacrylate, isodecyl methacrylate, tetradecyl methacrylate, octadecyl methacrylate, isooctyl acrylate, n-decyl acrylate, isodecyl acrylate, tetradecyl acrylate and octadecyl acrylate; the crosslinking monomer is one or the combination of more than one of 1, 6-hexanediol diacrylate, 1, 4-butanediol dimethacrylate, trimethylolpropane triacrylate, trimethylolpropane trimethacrylate, 1, 12-dodecyl dimethacrylate, 1, 14-tetradecanediol dimethacrylate, ethylene glycol dimethacrylate and neopentyl triacrylate.
3. The method for preparing the short fiber toughened water-absorbent acrylate polymer material according to claim 1, wherein the emulsifier is a water-in-oil emulsifier having an HLB value of 3 to 6; the initiator is one of ammonium persulfate, sodium persulfate or potassium persulfate.
4. The method for preparing the short fiber toughened water absorbent acrylate polymer material according to claim 1, wherein the electrolyte solution is a calcium chloride solution or a sodium chloride solution, and the concentration of the electrolyte solution is 1-4%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111094976.6A CN113637278B (en) | 2021-09-17 | 2021-09-17 | Short fiber toughened water-absorbent acrylate polymer material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111094976.6A CN113637278B (en) | 2021-09-17 | 2021-09-17 | Short fiber toughened water-absorbent acrylate polymer material and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113637278A CN113637278A (en) | 2021-11-12 |
| CN113637278B true CN113637278B (en) | 2022-10-21 |
Family
ID=78425992
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111094976.6A Active CN113637278B (en) | 2021-09-17 | 2021-09-17 | Short fiber toughened water-absorbent acrylate polymer material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113637278B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114874382B (en) * | 2022-05-30 | 2023-10-03 | 佛山市嘉信盈科技有限公司 | Method for preparing acrylic ester foam material by double-initiation and double-solidification through water bath microwave method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4654039A (en) * | 1985-06-18 | 1987-03-31 | The Proctor & Gamble Company | Hydrogel-forming polymer compositions for use in absorbent structures |
| US5567478A (en) * | 1994-06-09 | 1996-10-22 | Chemische Fabrik Stockhausen Gmbh | Process for producing a water-absorbing sheet material and the use thereof |
| CN1441813A (en) * | 2000-04-13 | 2003-09-10 | 三洋化成工业株式会社 | Crosslinked polymer, process for producing same, absorbent structure and absorbent article |
| CN103936918A (en) * | 2014-04-14 | 2014-07-23 | 广东联塑科技实业有限公司 | Water-absorbing acrylate foam material and preparation method and application thereof |
| CN104193886A (en) * | 2014-07-23 | 2014-12-10 | 佛山市联塑万嘉新卫材有限公司 | High-breathability water absorbable acrylic ester foamed material as well as preparation method and application thereof |
| CN110258140A (en) * | 2019-07-01 | 2019-09-20 | 鲁泰纺织股份有限公司 | The preparation method of acrylic ester monomer modified cellulose fibre fabric |
| CN111978456A (en) * | 2020-08-11 | 2020-11-24 | 中颉化工科技(上海)有限公司 | Absorbent resin particle, method for producing same, and absorbent article |
-
2021
- 2021-09-17 CN CN202111094976.6A patent/CN113637278B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4654039A (en) * | 1985-06-18 | 1987-03-31 | The Proctor & Gamble Company | Hydrogel-forming polymer compositions for use in absorbent structures |
| US5567478A (en) * | 1994-06-09 | 1996-10-22 | Chemische Fabrik Stockhausen Gmbh | Process for producing a water-absorbing sheet material and the use thereof |
| CN1441813A (en) * | 2000-04-13 | 2003-09-10 | 三洋化成工业株式会社 | Crosslinked polymer, process for producing same, absorbent structure and absorbent article |
| CN103936918A (en) * | 2014-04-14 | 2014-07-23 | 广东联塑科技实业有限公司 | Water-absorbing acrylate foam material and preparation method and application thereof |
| CN104193886A (en) * | 2014-07-23 | 2014-12-10 | 佛山市联塑万嘉新卫材有限公司 | High-breathability water absorbable acrylic ester foamed material as well as preparation method and application thereof |
| CN110258140A (en) * | 2019-07-01 | 2019-09-20 | 鲁泰纺织股份有限公司 | The preparation method of acrylic ester monomer modified cellulose fibre fabric |
| CN111978456A (en) * | 2020-08-11 | 2020-11-24 | 中颉化工科技(上海)有限公司 | Absorbent resin particle, method for producing same, and absorbent article |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113637278A (en) | 2021-11-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE69728349T2 (en) | A water-absorbing agent and process for the preparation thereof | |
| KR100678288B1 (en) | Water-absorbent resin and its production process | |
| CN113637278B (en) | Short fiber toughened water-absorbent acrylate polymer material and preparation method thereof | |
| CN104652119B (en) | A kind of preparation method of double-network hydrogel fiber and products thereof | |
| CN104624162B (en) | A kind of method that oil absorption material is prepared by matrix modification of palm fibre | |
| CN107502966A (en) | A kind of multifunctional composite fiber cellulose fiber and preparation method thereof | |
| CN108659434A (en) | Water-absorbent resin and method for producing same | |
| CN106009011A (en) | Method for preparing vinyl modified collagen membrane | |
| CN107854223B (en) | Water-absorbent resin suitable for wood pulp core paper diaper and preparation method thereof | |
| CN103113508A (en) | Super absorbent resin with lower liquid absorbing rate, and preparation method and application thereof | |
| CN106267366A (en) | A kind of method that high-strength and high ductility polyion hydrogel scaffold is prepared in the 3D of utilization printing | |
| CN101812806A (en) | Processing technology for smooth and non-shrinkable wool yarns | |
| CN109251278A (en) | A kind of preparation method of mushroom bran base high water-absorption resin | |
| DE19813443A1 (en) | New polymer particles which are useful for absorption of aqueous fluids | |
| CN102504460B (en) | Sweetcane bark fiber composite and preparation method thereof | |
| CN114288091B (en) | Preparation method of plant-based foam core | |
| CN113771439A (en) | Non-woven fabric toughened water-absorbing acrylate high polymer material and preparation method thereof | |
| CN105926056A (en) | Hydrogel fiber production technology and equipment | |
| CN105803666A (en) | Super-water-absorbent food packaging material and preparation method thereof | |
| CN1584148A (en) | Oil absorbing fibre and perparing method thereof | |
| CN109053968A (en) | A kind of high expansion multiplying power injectable water swelling bone cement and preparation method thereof | |
| CN110776598B (en) | Super absorbent resin and application thereof in diaper | |
| WO2017039392A1 (en) | Method for manufacturing super absorbent polymer fiber | |
| CN107670091A (en) | A kind of diaper super moisture absorbing resin material and preparation method thereof | |
| DK160254B (en) | Photopolymerized, hydrophilic interpolymer of acrylic acid and polyfunctional cross-linking agents, and object for absorbing body fluids which contains it |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |