CN109337151A - A kind of water swelling rubber and preparation method thereof - Google Patents
A kind of water swelling rubber and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of water swelling rubbers and preparation method thereof, belong to technical field of rubber material.The constituent of the rubber includes 25~65 parts of raw rubber, 35~75 parts of reclaimed rubber, 40~80 parts of water imbibition ion-exchange fibre, 5~20 parts of white carbon black, 10~25 parts of naphthenic oil, 1~3 part of paraffin, 0.5~1.5 part of anti-aging agent, 0.5~1.5 part of sulphur, 0.3~0.5 part of captax, 0.5~1.0 part of altax, 1~8 part of zinc oxide, 1~3 part of magnesia, 1~5 part of stearic acid, 5~20 parts of polyethylene glycol 400.The preparation method of the rubber includes that raw material is weighed, plasticated, being kneaded and vulcanization process.The present invention is by adding water imbibition ion-exchange fibre to rubber system in raw material, using plasticating, be kneaded, sulfuration process, and plasticating temperature, mixing time and curing temperature, pressure, time are optimized, to prepare with the rubber compared with high water absorption expansion rate, while improving the intensity, toughness of rubber, wearability and the performances such as anti-aging.
Description
Technical field
The invention belongs to technical field of rubber material, specifically a kind of water swelling rubber and preparation method thereof.
Background technique
Water swelling rubber is a kind of new functional macromolecule material by elastic packing and the dual sealing of water swelling,
It is widely used as the sealing material, sealing material, filler etc. of civil construction.The high resiliency of water swelling rubber and preferable machinery are strong
Degree can overcome rubber material because of permanent deformation, creep and interlocking material so that rubber may expand several to hundred times after absorbing water
The brings lose effectiveness in sealing defect such as cure shrinkage.Water swelling rubber can introduce the rubber of hydrophilic functional group by chemical modification
Matrix body material is made, and blending can also be carried out by rubber material and hydrophilic chemical substance and is made.
The principle that basis material determines in water swelling rubber is: elasticity is good, and processing performance is good, has certain intensity.
Common rubber has natural rubber, neoprene, butyl rubber, ethylene propylene diene rubber and thermoplastic SBS etc..Hydrophily
Substance is learned frequently with water-absorbing resins, the intensity and processing performance of rubber can be improved.Water-absorbing resins require that granularity is small, water absorption rate
Greatly, keep water ability it is strong, be mostly water-soluble resin through it is partial cross-linked or saponification and made of generally particulate powder,
Their overwhelming majority are not easy to disperse in rubber, and disperse unevenly, and the resin on surface will be extracted out by water when meeting water, thus shadow
Ring the water absorption rate of product.Usually water-absorbing resin and water-swellable polyurethane are used in combination, together with compounding rubber, producing has not
With the water swelling rubber of expansion rate of water absorption and mechanical property, and to guarantee certain expansion rate, it need to usually add a large amount of suction
Water-resin, but the excessive physical mechanical property that will affect rubber of dosage.Water swelling rubber is in moist rugged environment mostly
It is lower to use, if when containing metal ion in water, such as the ocean engineering with contact with sea water, when in the water of rainwater or mud
Containing metal ion, the water-swelling property for the water swelling rubber being blended using water-absorbing resins with rubber material just be will receive
It influences.So finding suitable water swelling rubber co-mixing system is always the target that this synthesis technology is pursued.
Through retrieving, Chinese invention patent, application number: 201510053336.9, date of publication: 2016.08.17 discloses one
Kind hydro-expansive rubber, belongs to field of rubber materials, consisting of: raw rubber, KS base polyurethane prepolymer for use as, sodium bentonite, cycloalkanes
Oil, paraffin, antioxidant D, sulphur S, captax, altax, zinc oxide, magnesia, stearic acid SA, ethylene glycol；The invention is
With KS base polyurethane prepolymer for use as main body water uptake expansion material, while assisting its KS poly- using neoprene+sodium bentonite
Urethane performed polymer carries out water swelling, has unique water-stagnating effect: on the one hand there is the elasticity and extensibility of rubber product, it can be with
Play elastic packing；On the other hand have the function of water-swellable, with water sealing, be a kind of function with dual sealing effect
The formula of energy property material, the service life of product obtained greatly improve, and use scope substantially increases.But the physical machine of the rubber
Tool performance is poor, and when containing metal ion in water, the water-swelling property of the rubber will be affected.
Summary of the invention
Technical problems to be solved by the inivention
It is poly- generally by the addition water-absorbing resin in rubber and water-swellable for water swelling rubber in the prior art
The problem of urethane is prepared, and water-absorbing resin dosage will affect greatly the physical mechanical property of rubber, the present invention provides a kind of suctions
Water-expansible rubber and preparation method thereof, by the way that water imbibition ion-exchange fibre is added into rubber, and using specific preparation work
Skill enhances obtained water swelling rubber water-swelling property, mechanical performance etc..
Technical solution
To solve the above problems, technical solution provided by the invention are as follows:
A kind of water swelling rubber, the raw material including following parts by weight, in which:
25~65 parts of raw rubber, 35~75 parts of reclaimed rubber, 40~80 parts of water imbibition ion-exchange fibre, white carbon black 5~20
Part, 10~25 parts of naphthenic oil, 1~3 part of paraffin, 0.5~1.5 part of anti-aging agent, 0.5~1.5 part of sulphur, captax 0.3~0.5
Part, 0.5~1.0 part of altax, 1~8 part of zinc oxide, 1~3 part of magnesia, 1~5 part of stearic acid, polyethylene glycol 400 5~
20 parts.
Further, the raw rubber includes 5~30 parts of natural gum, 20~55 parts of synthetic rubber.
Further, the synthetic rubber is neoprene or butadiene rubber or both mixing.
Further, the white carbon black is superfine white carbon black, and superfine white carbon black compares common white carbon black, tight with surface
The features such as coordination of weight is insufficient, huge specific surface area and surface are oxygen debt, makes it show extremely strong activity, greatly enhances it
With the binding ability and distributing homogeneity of rubber, to improve the intensity, toughness of rubber, wearability and the performances such as anti-aging.
Further, the anti-aging agent is amines antioxidants, such as anti-aging agent 7PPD, antioxidant D TPD, antioxidant D FC-34
Deng making rubber not only has thermo oxidative aging, ozone-resistant aging characteristics, while the protection to agings such as copper ion, light and flexions
Also there is significant effect；In addition, rush can also be played to Vulcanization Process of Rubber when amines antioxidants additional amount reaches certain component
Into effect, and then improve the mechanical property of rubber.
Further, the zinc oxide is nano zine oxide, and the magnesia is nano magnesia.It nano zine oxide and receives
Rice magnesia has large specific surface area, can preferably rubber material mix, promote and activation effect is more preferable；Rubber is improved simultaneously
The performances such as the fire-retardant of glue, antiultraviolet, antibacterial bacteriostatic, the anti-enzyme of taste of dispelling, in addition, have the function of vulcanizing activator and reinforcing agent,
Improve rubber performance.
Further, the water imbibition ion-exchange fibre is in polyolefin, polyacrylonitrile, polyvinyl alcohol and polyvinyl chloride
One or more matrix fibers mixing formed through function dough.
A kind of preparation method of the water swelling rubber, step are as follows:
Step 1: raw material weighs: weighed respectively according to quality proportioning raw rubber, reclaimed rubber, water imbibition ion-exchange fibre,
White carbon black, naphthenic oil, paraffin, anti-aging agent, sulphur, captax, altax, zinc oxide, magnesia, stearic acid and poly- second two
Alcohol；
Step 2: plasticating: raw rubber and reclaimed rubber being mixed to be placed under 35~45 DEG C of working temperatures and plasticated, is plasticated
Glue；It plasticates under the conditions of the temperature, the plasticity and mobility of obtained broken-down rubber are preferable, allow to carry out subsequent mixing
When, water imbibition ion-exchange fibre and the broken-down rubber more sufficiently, can be mixed uniformly, to improve the water swelling
The mechanical performance of rubber product and water-swelling property etc.；
Step 3: being kneaded:
A, white carbon black, naphthenic oil, paraffin, anti-aging agent, zinc oxide, magnesia, tristearin are sequentially added into the broken-down rubber
Acid and polyethylene glycol 400, carry out mixing 5min；
B, water imbibition ion-exchange fibre is added, sulphur, captax and altax are eventually adding, carries out mixing 15
~20min, obtains rubber compound；
Step 4: vulcanization: under 160~170 DEG C, 13MPa operating condition, the rubber compound being carried out 15~20min of vulcanization, is made
It is standby to arrive water swelling rubber.
Further, the step of described matrix fiber function dough are as follows:
Step 1: raw material weighs: weighing described matrix fiber on demand；
Step 2: Carboxylation processing: being slowly added to propionic aldehyde, hydrazine hydrate and water into described matrix fiber, stir at normal temperature
It mixes to be placed under 80 DEG C of environment and reacts 2h；The purpose of Carboxylation processing is to make to generate weakly acidic functional group in fiber, is generated in weak
Acid water imbibition ion-exchange fibre；
Step 3: filtering: being filtered to remove solvent, obtain intermediate product, the intermediate product is to contain reaction solution impurity
Water imbibition ion-exchange fibre；
Step 4: washing: intermediate product successively is cleaned with water and 3% hydrochloric acid, final rinse water to flushing liquor is neutrality,
Obtain weakly acidic water imbibition ion-exchange fibre.
Further, propionic aldehyde, hydrazine hydrate, water imbibition ion-exchange fibre described in the processing of described matrix fiber function dough
Quality proportioning with water is 1: 0.05~5: 0.01~2: 0.05~5.
Beneficial effect
Using technical solution provided by the invention, compared with prior art, have the following beneficial effects:
(1) a kind of water swelling rubber provided by the invention, which, which passes through, is added water imbibition ion-exchange fibre ingredient,
By the characteristics such as water imbibition ion-exchange fibre mass transfer is big apart from short, exchange capacity, water flowing resistance is small, there is rubber faster
Adsorption and desorption speed and " high dispersive " behavior, to make rubber that there is quick water-swelling property, and expansion rate of water absorption mentions significantly
Height, expansion rate of water absorption can have reached 400%；
(2) a kind of water swelling rubber provided by the invention, which, which passes through, is added water imbibition ion-exchange fibre ingredient,
Keep the intensity of rubber higher；
(3) a kind of water swelling rubber provided by the invention, the rubber is by being added weakly acidic water imbibition ion exchange
Fibre composition has rubber and adsorbs micro metal ion ability, and then makes rubber intensity is more preferable after absorbing water, moreover it is possible to improve
The rigidity of rubber material after water suction；
(4) a kind of water swelling rubber provided by the invention, the white carbon black being added in the rubber are superfine white carbon black, significantly
Enhance its binding ability and distributing homogeneity with rubber, to improve the intensity, toughness of rubber, wearability and the property such as anti-aging
Energy；
(5) a kind of water swelling rubber provided by the invention, the anti-aging agent being added in the rubber are amines antioxidants, make rubber
Glue not only has thermo oxidative aging, ozone-resistant aging characteristics, while also having significantly to the protection of the agings such as copper ion, light and flexion
Effect；In addition, when amines antioxidants additional amount reaches certain component facilitation can also be played to Vulcanization Process of Rubber, into
And improve the mechanical property of rubber；
(6) a kind of water swelling rubber provided by the invention, the zinc oxide and magnesia being added in the rubber are respectively to receive
Rice zinc oxide and nano magnesia, nano zine oxide and nano magnesia have large specific surface area, being capable of better rubber material
Mixing, promotes and activation effect is more preferable；The property such as the fire-retardant of rubber, antiultraviolet, antibacterial bacteriostatic, the anti-enzyme of taste of dispelling are improved simultaneously
Can, in addition, having the function of vulcanizing activator and reinforcing agent, improve rubber performance；
(7) a kind of water swelling rubber provided by the invention, preparation process is simple, is recycled absorption parsing 500 times or more,
Service life is high, and preparation cost and use cost are substantially reduced；
(8) preparation method of a kind of water swelling rubber provided by the invention, the water imbibition ion-exchange fibre used are
By the way that propionic aldehyde, hydrazine hydrate, water is added according to a certain ratio into matrix fiber, stirring at normal temperature 50min is placed on 80 DEG C of working temperatures
Then lower reaction 2h the techniques such as is filtered, is cleaned and being made, production method is simple, efficiently, at low cost, without using chloromethyl ether etc.
Strong toxic agent, safety non-pollution, and obtained weakly acidic ion-exchange fibre exchange capacity is big, water suction and adsorbing metal from
The ability of son is strong；
(9) preparation method of a kind of water swelling rubber provided by the invention, plasticating temperature is 35~45 DEG C, in the temperature
Under the conditions of plasticate, the plasticity and mobility of obtained broken-down rubber are preferable, when allowing to carry out subsequent mixing, water imbibition ion
Exchange fiber and the broken-down rubber more sufficiently, can be mixed uniformly, to improve the machine of the water swelling rubber product
Tool performance and water-swelling property etc.；
(10) preparation method of a kind of water swelling rubber provided by the invention, preparation section is simple, low cost, Neng Goushi
Existing magnanimity production.
Specific embodiment
To further appreciate that the contents of the present invention, the invention will be further described combined with specific embodiments below.
Embodiment 1
A kind of water swelling rubber of the present embodiment, is made of the raw material of following parts by weight, in which:
5 parts of natural gum, 35 parts of reclaimed rubber, 20 parts of neoprene, 40 parts of water imbibition ion-exchange fibre, superfine white carbon black
5 parts, 10 parts of naphthenic oil, 1 part of paraffin, 0.5 part of anti-aging agent 7PPD, 0.5 part of sulphur, 0.3 part of captax, altax 0.5
Part, 1 part of nano zine oxide, 1 part of nano magnesia, 1 part of stearic acid, 5 parts of polyethylene glycol 400.
Water imbibition ion-exchange fibre is by one of polyolefin, polyacrylonitrile, polyvinyl alcohol and polyvinyl chloride or more
The mixing of kind of matrix fiber, after the methods of chemically modified, graft copolymerization processing, generate active site include acid, alkalinity and
The chemical functional groups such as chelating.
Inventor has found that water imbibition ion-exchange fibre is because having biggish external surface area and rubber in the course of the research
Glue material thermodynamic compatibility is preferable, can form preferable mixing system after mixing according to a certain ratio, it is miscible after by water imbibition
The characteristics such as ion-exchange fibre mass transfer is big apart from short, exchange capacity, water flowing resistance is small, make rubber have faster Adsorption and desorption
Speed and " high dispersive " behavior, so that rubber be made to have quick water-swelling property, expansion rate of water absorption is greatly improved, while rubber
As long as applying certain pressure after water suction can be dehydrated, water imbibition and exchange are held when having Ke Xunhuanliyong characteristic, and recycling
Amount is basically unchanged；Due to water imbibition ion-exchange fibre intensity with higher itself, water imbibition ion exchange is added in rubber
Fiber keeps the intensity of rubber higher, is recycled absorption parsing, and number is recycled and greatly improves；In addition, weakly acidic water imbibition
Ion-exchange fibre can be such that rubber has and adsorb micro metal ion ability, and then make rubber product intensity after absorbing water
More preferably, moreover it is possible to which the rigidity for improving rubber material after water suction makes rubber have apparent kinetic advantage.
In the present embodiment, preparing matrix fiber used in the water imbibition ion-exchange fibre is polyvinyl alcohol, preparation step
Suddenly are as follows:
Step 1: raw material weighs: weighing the polyvinyl alcohol；
Step 2: Carboxylation processing: being slowly added to propionic aldehyde, hydrazine hydrate and water, every 20g polyethylene into the polyvinyl alcohol
Propionic aldehyde 500ml, hydrazine hydrate 20g, water 20ml is added in alcohol；Stirring at normal temperature 50min, which is placed under 80 DEG C of working temperatures, reacts 2h；
Step 3: filtering: being filtered to remove solvent, obtain intermediate product；
Step 4: washing: intermediate product successively is cleaned with water and 3% hydrochloric acid, final rinse water to flushing liquor is neutrality,
Obtain weakly acidic water imbibition ion-exchange fibre.
The preparation method of the water swelling rubber of the present embodiment, comprising the following steps:
Step 1: raw material weighs: weighed respectively according to quality proportioning natural gum, reclaimed rubber, neoprene, water imbibition from
It is sub- exchange fiber, superfine white carbon black, naphthenic oil, paraffin, anti-aging agent 7PPD, sulphur, captax, altax, nano oxidized
Zinc, nano magnesia, stearic acid and polyethylene glycol 400；
Step 2: plasticating: natural gum, reclaimed rubber and neoprene being mixed and are put into open mill in 35~45 DEG C of operating conditions
At a temperature of plasticate 5min, obtain broken-down rubber；
Step 3: being kneaded:
A, sequentially added into the broken-down rubber superfine white carbon black, naphthenic oil, paraffin, anti-aging agent 7PPD, nano zine oxide,
Nano magnesia, stearic acid and polyethylene glycol 400 carry out mixing 5min；
B, water imbibition ion-exchange fibre is added, sulphur, captax and altax are eventually adding, continues to mix
15~20min is refined, rubber compound is obtained；
Step 4: vulcanization: under 160~170 DEG C, 13MPa operating condition, the rubber compound being carried out 15~20min of vulcanization, is made
It is standby to obtain water swelling rubber.
The water imbibition expanded rubber obtained in the present embodiment is taken to carry out related experiment, measuring expansion rate of water absorption is
400%, tensile strength 19.6Mpa, elongation rate of tensile failure 463% can be recycled 500 times or more.
Embodiment 2
A kind of water swelling rubber of the present embodiment, the preparation method is the same as that of Example 1, different and the improvement is that, the suction
Water-expansible rubber is made of the raw material of following parts by weight, in which:
5 parts of natural gum, 75 parts of reclaimed rubber, 20 parts of butadiene rubber, 50 parts of water imbibition ion-exchange fibre, superfine white carbon black
10 parts, 15 parts of naphthenic oil, 1 part of paraffin, 1 part of antioxidant D FC-34,1 part of sulphur, 0.5 part of captax, altax 0.8
Part, 6 parts of nano zine oxide, 2 parts of nano magnesia, 2 parts of stearic acid, 10 parts of polyethylene glycol 400；
Preparing matrix fiber used in the water imbibition ion-exchange fibre is polyvinyl alcohol, and the preparation method is the same as that of Example 1；
The expansion rate of water absorption of water imbibition expanded rubber obtained in the present embodiment be 380%, tensile strength 14.6Mpa,
Elongation rate of tensile failure is 435%, be can be recycled 500 times or more.
Embodiment 3
A kind of water swelling rubber of the present embodiment, the preparation method is the same as that of Example 1, different and the improvement is that, the suction
Water-expansible rubber is made of the raw material of following parts by weight, in which:
10 parts of natural gum, 50 parts of reclaimed rubber, 25 parts of neoprene, 10 parts of butadiene rubber, water imbibition ion-exchange fibre
65 parts, 5 parts of superfine white carbon black, 15 parts of naphthenic oil, 1 part of paraffin, 1 part of anti-aging agent 7PPD, 1 part of sulphur, 0.5 part of captax, rush
Into 0.8 part of agent DM, 6 parts of nano zine oxide, 2 parts of nano magnesia, 2 parts of stearic acid, 5 parts of polyethylene glycol 400；
Preparing matrix fiber used in the water imbibition ion-exchange fibre is polyvinyl alcohol, and the preparation method is the same as that of Example 1；
The expansion rate of water absorption of water imbibition expanded rubber obtained in the present embodiment be 300%, tensile strength 13.9Mpa,
Elongation rate of tensile failure is 416%, be can be recycled 500 times or more.
Embodiment 4
A kind of water swelling rubber of the present embodiment, the preparation method is the same as that of Example 1, different and the improvement is that, the suction
Water-expansible rubber is made of the raw material of following parts by weight, in which:
30 parts of natural gum, 55 parts of reclaimed rubber, 15 parts of butadiene rubber, 80 parts of water imbibition ion-exchange fibre, ultra-fine hard charcoal
Black 20 parts, 25 parts of naphthenic oil, 3 parts of paraffin, 1.5 parts of antioxidant D TPD, 1.5 parts of sulphur, 0.5 part of captax, altax
1.0 parts, 8 parts of nano zine oxide, 3 parts of nano magnesia, 5 parts of stearic acid, 20 parts of polyethylene glycol 400；
Preparing matrix fiber used in the water imbibition ion-exchange fibre is polyvinyl alcohol, and the preparation method is the same as that of Example 1；
The expansion rate of water absorption of water imbibition expanded rubber obtained in the present embodiment be 260%, tensile strength 13.6Mpa,
Elongation rate of tensile failure is 412%, be can be recycled 500 times or more.
Embodiment 5
A kind of water swelling rubber of the present embodiment, the preparation method is the same as that of Example 1, different and the improvement is that, the suction
Water-expansible rubber is made of the raw material of following parts by weight, in which:
10 parts of natural gum, 35 parts of reclaimed rubber, 25 parts of butadiene rubber, 30 parts of neoprene, water imbibition ion-exchange fibre
70 parts, 10 parts of superfine white carbon black, 15 parts of naphthenic oil, 1 part of paraffin, 1 part of antioxidant D TPD, 1 part of sulphur, 0.5 part of captax,
0.8 part of altax, 6 parts of nano zine oxide, 2 parts of nano magnesia, 2 parts of stearic acid, 10 parts of polyethylene glycol 400；
Preparing matrix fiber used in the water imbibition ion-exchange fibre is polyacrylonitrile, preparation step are as follows:
Step 1: raw material weighs: weighing the polyacrylonitrile；
Step 2: Carboxylation processing: being slowly added to propionic aldehyde, hydrazine hydrate and water, every 20g polypropylene into the polyacrylonitrile
Propionic aldehyde 500ml, hydrazine hydrate 85g, water 100ml is added in nitrile；Stirring at normal temperature 50min, which is placed under 80 DEG C of working temperatures, reacts 2h；
Step 3: filtering: being filtered to remove solvent, obtain intermediate product；
Step 4: washing: intermediate product successively is cleaned with water and 3% hydrochloric acid, final rinse water to flushing liquor is neutrality,
Obtain weakly acidic water imbibition ion-exchange fibre.
The expansion rate of water absorption of water imbibition expanded rubber obtained in the present embodiment be 320%, tensile strength 15.6Mpa,
Elongation rate of tensile failure is 442%, be can be recycled 500 times or more.
Embodiment 6
A kind of water swelling rubber of the present embodiment, the raw material composition and the same embodiment of preparation method of the water swelling rubber
1, different and the improvement is that, the matrix fiber that when water imbibition ion-exchange fibre preparation in raw material composition uses is poly-
Alkene, preparation step are as follows:
Step 1: raw material weighs: weighing the polyolefin；
Step 2: Carboxylation processing: propionic aldehyde, hydrazine hydrate and water are slowly added into the polyolefin, in every 20g polyolefin
Propionic aldehyde 500ml, hydrazine hydrate 85g, water 100ml is added；Stirring at normal temperature 50min, which is placed under 80 DEG C of working temperatures, reacts 2h；
Step 3: filtering: being filtered to remove solvent, obtain intermediate product；
Step 4: washing: intermediate product successively is cleaned with water and 3% hydrochloric acid, final rinse water to flushing liquor is neutrality,
Obtain weakly acidic water imbibition ion-exchange fibre.
The expansion rate of water absorption of water imbibition expanded rubber obtained in the present embodiment be 330%, tensile strength 18.3Mpa,
Elongation rate of tensile failure is 451%, be can be recycled 500 times or more.
Embodiment 7
A kind of water swelling rubber of the present embodiment, the raw material composition and the same embodiment of preparation method of the water swelling rubber
2, different and the improvement is that, the matrix fiber that when water imbibition ion-exchange fibre preparation in raw material composition uses is poly-
Vinyl alcohol and poly (vinyl chloride) blend, preparation step are as follows:
Step 1: raw material weighs: weighing polyvinyl alcohol and polyvinyl chloride；
Step 2: Carboxylation processing: be slowly added into polyvinyl alcohol and poly (vinyl chloride) blend propionic aldehyde, hydrazine hydrate and
Propionic aldehyde 500ml, hydrazine hydrate 85g, water 60ml are added in every 20g mixture for water；Stirring at normal temperature 50min is placed on 80 DEG C of operating condition temperature
Degree is lower to react 2h；
Step 3: filtering: being filtered to remove solvent, obtain intermediate product；
Step 4: washing: intermediate product successively is cleaned with water and 3% hydrochloric acid, final rinse water to flushing liquor is neutrality,
Obtain weakly acidic water imbibition ion-exchange fibre.
The expansion rate of water absorption of water imbibition expanded rubber obtained in the present embodiment be 310%, tensile strength 16.4Mpa,
Elongation rate of tensile failure is 445%, be can be recycled 500 times or more.
Embodiment 8
A kind of water swelling rubber of the present embodiment, the raw material composition and the same embodiment of preparation method of the water swelling rubber
3, different and the improvement is that, the matrix fiber that when water imbibition ion-exchange fibre preparation in raw material composition uses is poly-
Alkene, polyacrylonitrile and poly (vinyl chloride) blend, preparation step are as follows:
Step 1: raw material weighs: weighing polyolefin, polyacrylonitrile and polyvinyl chloride；
Step 2: Carboxylation processing: being slowly added to propionic aldehyde, water into polyolefin, polyacrylonitrile and poly (vinyl chloride) blend
Hydrazine and water are closed, propionic aldehyde 500ml, hydrazine hydrate 60g, water 80ml is added in every 20g mixture；Stirring at normal temperature 50min is placed on 80 DEG C
2h is reacted under working temperature；
Step 3: filtering: being filtered to remove solvent, obtain intermediate product；
Step 4: washing: intermediate product successively is cleaned with water and 3% hydrochloric acid, final rinse water to flushing liquor is neutrality,
Obtain weakly acidic water imbibition ion-exchange fibre.
The expansion rate of water absorption of water imbibition expanded rubber obtained in the present embodiment be 290%, tensile strength 13.7Mpa,
Elongation rate of tensile failure is 414%, be can be recycled 500 times or more.
Embodiment 9
A kind of water swelling rubber of the present embodiment, the raw material composition and the same embodiment of preparation method of the water swelling rubber
4, different and the improvement is that, the matrix fiber that when water imbibition ion-exchange fibre preparation in raw material composition uses is poly-
Vinyl chloride, preparation step are as follows:
Step 1: raw material weighs: weighing polyvinyl chloride；
Step 2: Carboxylation processing: propionic aldehyde, hydrazine hydrate and water are slowly added into polyvinyl chloride, in every 20g polyvinyl chloride
Propionic aldehyde 500ml, hydrazine hydrate 85g, water 100ml is added；Stirring at normal temperature 50min, which is placed under 80 DEG C of working temperatures, reacts 2h；
Step 3: filtering: being filtered to remove solvent, obtain intermediate product；
Step 4: washing: intermediate product successively is cleaned with water and 3% hydrochloric acid, final rinse water to flushing liquor is neutrality,
Obtain weakly acidic water imbibition ion-exchange fibre.
The expansion rate of water absorption of water imbibition expanded rubber obtained in the present embodiment be 260%, tensile strength 13.4Mpa,
Elongation rate of tensile failure is 410%, be can be recycled 500 times or more.
The present invention is described according to specific embodiment, but it will be understood by those skilled in the art that not departing from this hair
When bright range, various change and equivalent replacement can be carried out.In addition, to adapt to the specific occasion of the technology of the present invention or material, it can be right
The present invention carries out many modifications without departing from its protection scope.Therefore, the present invention is not limited to specific embodiment disclosed herein,
And including all embodiments for dropping into claims.
Claims (10)
1. a kind of water swelling rubber, which is characterized in that the raw material including following parts by weight, in which:
25~65 parts of raw rubber, 35~75 parts of reclaimed rubber, 40~80 parts of water imbibition ion-exchange fibre, 5~20 parts of white carbon black, ring
10~25 parts of alkane oil, 0.5~1.5 part of anti-aging agent, 0.5~1.5 part of sulphur, 0.3~0.5 part of captax, promotees 1~3 part of paraffin
Into 0.5~1.0 part of agent DM, 1~8 part of zinc oxide, 1~3 part of magnesia, 1~5 part of stearic acid, 5~20 parts of polyethylene glycol 400.
2. a kind of water swelling rubber according to claim 1, it is characterised in that: the raw rubber includes natural gum 5~30
Part, 20~55 parts of synthetic rubber.
3. a kind of water swelling rubber according to claim 2, it is characterised in that: the synthetic rubber be neoprene or
Butadiene rubber or both mixing.
4. a kind of water swelling rubber according to claim 1, it is characterised in that: the white carbon black is superfine white carbon black.
5. a kind of water swelling rubber according to claim 1, it is characterised in that: the anti-aging agent is amines antioxidants.
6. a kind of water swelling rubber according to claim 1, it is characterised in that: the zinc oxide is nano zine oxide,
The magnesia is nano magnesia.
7. a kind of water swelling rubber according to claim 1, it is characterised in that: the water imbibition ion-exchange fibre is
One of polyolefin, polyacrylonitrile, polyvinyl alcohol and polyvinyl chloride or the mixing of a variety of matrix fibers are formed through function dough.
8. a kind of preparation method of any water swelling rubber of claim 1 to 7, which is characterized in that step are as follows:
Step 1: raw material weighs: weighing raw rubber, reclaimed rubber, water imbibition ion-exchange fibre, hard charcoal respectively according to quality proportioning
Black, naphthenic oil, paraffin, anti-aging agent, sulphur, captax, altax, zinc oxide, magnesia, stearic acid and polyethylene glycol；
Step 2: plasticating: raw rubber and reclaimed rubber being mixed to be placed under 35~45 DEG C of working temperatures and plasticated, broken-down rubber is obtained；
Step 3: being kneaded:
A, sequentially added into the broken-down rubber white carbon black, naphthenic oil, paraffin, anti-aging agent, zinc oxide, magnesia, stearic acid and
Polyethylene glycol 400 carries out mixing 5min；
B, add water imbibition ion-exchange fibre, be eventually adding sulphur, captax and altax, carry out mixing 15~
20min obtains rubber compound；
Step 4: vulcanization: under 160~170 DEG C, 13MPa operating condition, the rubber compound being carried out 15~20min of vulcanization, is prepared into
Water swelling rubber.
9. a kind of preparation method of water swelling rubber according to claim 7, which is characterized in that described matrix fiber official
The step of energy dough are as follows:
Step 1: raw material weighs: weighing described matrix fiber on demand；
Step 2: Carboxylation processing: propionic aldehyde, hydrazine hydrate and water are slowly added into described matrix fiber, after stirring at normal temperature
It is placed under 80 DEG C of environment and reacts 2h；
Step 3: filtering: being filtered to remove solvent, obtain intermediate product；
Step 4: washing: successively cleaning intermediate product with water and 3% hydrochloric acid, final rinse water to flushing liquor is neutrality, is obtained
Weakly acidic water imbibition ion-exchange fibre.
10. a kind of preparation method of water swelling rubber according to claim 9, it is characterised in that: described matrix fiber
Propionic aldehyde described in the processing of function dough, hydrazine hydrate, water imbibition ion-exchange fibre and water quality proportioning be 1: 0.05~5:
0.01~2: 0.05~5.
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| CN110591328A (en) * | 2019-08-26 | 2019-12-20 | 青岛科技大学 | Spunlace-induced response rubber composite material and preparation method thereof |
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