CN108162520B - A kind of anti-static rubber slab and preparation method thereof - Google Patents
A kind of anti-static rubber slab and preparation method thereof Download PDFInfo
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- CN108162520B CN108162520B CN201711404459.8A CN201711404459A CN108162520B CN 108162520 B CN108162520 B CN 108162520B CN 201711404459 A CN201711404459 A CN 201711404459A CN 108162520 B CN108162520 B CN 108162520B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B25/00—Layered products comprising a layer of natural or synthetic rubber
- B32B25/04—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B25/08—Layered products comprising a layer of natural or synthetic rubber comprising rubber as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/002—Methods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/22—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
- B29C43/24—Calendering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
- C08L9/02—Copolymers with acrylonitrile
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/39—Aldehyde resins; Ketone resins; Polyacetals
- D06M15/41—Phenol-aldehyde or phenol-ketone resins
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
- D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M15/53—Polyethers
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
- D06M15/693—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with natural or synthetic rubber, or derivatives thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
- B32B2260/04—Impregnation, embedding, or binder material
- B32B2260/046—Synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/20—Properties of the layers or laminate having particular electrical or magnetic properties, e.g. piezoelectric
- B32B2307/21—Anti-static
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/50—Properties of the layers or laminate having particular mechanical properties
- B32B2307/582—Tearability
- B32B2307/5825—Tear resistant
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/001—Conductive additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/04—Antistatic
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/32—Polyesters
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/16—Synthetic fibres, other than mineral fibres
- D06M2101/30—Synthetic polymers consisting of macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- D06M2101/34—Polyamides
Abstract
The present invention provides a kind of anti-static rubber slabs, belong to technical field of composite materials.The antistatic strength cloth that the present invention is added to one layer of dipping process among anti-static rubber slab is casing play, increase tearing strength, extend service life, and can be combined together by the raw material in the antistatic strength cloth and surface layer of dipping process, increase the bonding on surface layer and antistatic strength cloth.Embodiment statistics indicate that, anti-static rubber slab tearing strength provided by the invention is up to 72kN/m, tensile strength 15MPa, elongation at break 150%, and setafter break rate is 20%, hardness 65, aging coefficient 0.70, and sheet resistance is 1 × 107Ω expands the application range of anti-static rubber slab.
Description
Technical field
The present invention relates to technical field of composite materials more particularly to a kind of anti-static rubber slab and preparation method thereof.
Background technique
Anti-static rubber slab is the emerging product that the nineties are risen, developed, and effect is: big in rubber by conductive material
Molecular surface forms conductive layer, to constitute electrostatic catharsis channel, reaches to effectively remove and generates because of equipment rotation, object friction etc.
Electrostatic purpose, it prevents fire incident to protection human health, keeps the Gao Ling of the normal turn of equipment, instrument and instrument
Sensitivity has important role.
Anti-static rubber slab material of main part is nitrile rubber and conductive black, and nitrile rubber is passed through by butadiene and acrylonitrile
Made from emulsion polymerization, oil resistivity is fabulous, and wearability is higher, and heat resistance is preferable, and bonding force is strong；Conductive black partial size is small, than
Surface area is big and coarse, has low resistance, can assign product conduction or anti-static electrification.In the prior art, anti-static rubber slab
There is a problem of that tearing strength is low, tearing strength is only 20kN/m, and vehicle etc. limits antistatic rubber by being easy that it is made to fracture
The application range of offset plate.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of anti-static rubber slabs and preparation method thereof.The present invention provides
Anti-static rubber slab tearing strength it is high, there is excellent tear resistance.
In order to achieve the above-mentioned object of the invention, the present invention the following technical schemes are provided:
A kind of anti-static rubber slab, the anti-static rubber slab have three layers of sandwich structure, the sandwich layer of the sandwich structure
For the antistatic strength cloth of dipping process, the surface layer of the sandwich structure includes the component of following parts by weight:
100 parts of nitrile rubber, 60 parts of conductive black, 20 parts of aromatic naphtha, 5 parts of zinc oxide, 1.2 parts of stearic acid, captax
1.2 parts, 1 part of antioxidant 4010,2.0 parts of Sulfur.
Preferably, the antistatic strength cloth is EP200 cloth.
Preferably, the dipping solution that the impregnation uses includes the component of following parts by weight:
70 parts of RFI solution, 20 parts of RF resin liquid, 10 parts of conduction liquid nonylphenol polyoxyethylene ether.
Preferably, the RFI solution includes the component of following mass fraction: 95 parts of Heveatex, resorcinol-formaldehyde tree
5 parts of rouge.
Preferably, the preparation method of the RF resin liquid is the following steps are included: resorcinol, formaldehyde are mixed with NaOH,
Polymerization reaction occurs, obtains RF resin liquid.
Preferably, the mass ratio of the resorcinol, formaldehyde and NaOH are 1:7:1.
Preferably, the dipping process the following steps are included:
The antistatic strength cloth is after dipping solution impregnates successively through hot-stretch, thermal finalization and cooling treatment.
Preferably, the temperature of the hot-stretch is 185 ± 5 DEG C, and the time of hot-stretch is 2~2.5min, of hot-stretch
Power is 20000~22000N.
Preferably, the temperature of the thermal finalization is 185 ± 5 DEG C, and the time of thermal finalization is 2~2.5min, of hot-stretch
Power is 20000~22000N.
The present invention also provides the preparation methods of anti-static rubber slab described in above-mentioned technical proposal, comprising the following steps:
(1) nitrile rubber weighs raw material according to the formula on surface layer and is kneaded, obtain rubber compound after over-mastication is handled；
(2) rubber compound that the step (1) obtains is rolled, obtains film；
(3) the antistatic strength cloth of film and dipping process that the step (2) obtains is formed, obtains three layers of folder
Cored structure molded rubber plate；
(4) the molded rubber plate that the step (3) obtains is vulcanized, obtains anti-static rubber slab.
The present invention provides a kind of anti-static rubber slab, the anti-static rubber slab has three layers of sandwich structure, the folder
The sandwich layer of cored structure is the strength cloth of dipping process, and the surface layer of the sandwich structure includes the component of following parts by weight: butyronitrile
100 parts of rubber, 60 parts of conductive black, 20 parts of aromatic naphtha, 5 parts of zinc oxide, 1.2 parts of stearic acid, 1.2 parts of captax, anti-aging agent
40101 parts, 2.0 parts of Sulfur.The antistatic strength cloth that the present invention is added to one layer of dipping process among anti-static rubber slab is
Casing play increases tearing strength, extends service life, and can combine by the antistatic strength cloth and surface layer of dipping process
Together, the bonding on surface layer and antistatic strength cloth is increased.Embodiment statistics indicate that, antistatic rubber provided by the invention
Plate tearing strength is up to 72kN/m, and tensile strength 15MPa expands the application range of anti-static rubber slab.
Specific embodiment
The present invention provides a kind of anti-static rubber slab, the anti-static rubber slab has three layers of sandwich structure, the folder
The sandwich layer of cored structure is the antistatic strength cloth of dipping process, and the surface layer of the sandwich structure includes the group of following parts by weight
Point:
100 parts of nitrile rubber, 60 parts of conductive black, 20 parts of aromatic naphtha, 5 parts of zinc oxide, 1.2 parts of stearic acid, captax
1.2 part, 1 part of antioxidant 4010,2.0 parts of Sulfur.
The present invention is casing play by being added to the antistatic strength cloth of one layer of dipping process among anti-static rubber slab,
Tearing strength is increased, service life is extended.
In the present invention, the antistatic strength cloth is preferably EP200 cloth.In the present invention, the EP200 cloth is through to being
Polyester, broadwise are polyamides, and the performance of the EP200 cloth is as follows:
Square metre dry mass of the EP200 cloth is 1308gm-2, with a thickness of 1.51mm, insulation.The present invention is to described
The source of EP200 cloth does not have any special restriction, using commercial goods well known to those skilled in the art.
In the present invention, the thickness of the antistatic strength cloth of the dipping process is preferably 0.5mm；The present invention is to the table
The thickness of layer does not have special restriction, and the thickness using rubber slab in anti-static rubber slab well known to those skilled in the art is
Can, specifically, such as 0.5 millimeter, 1 millimeter, 1.5 millimeters etc..
The present invention is to the nitrile rubber, conductive black, aromatic naphtha, zinc oxide, stearic acid, captax, antioxidant 4010
And the source of Sulfur does not have special restriction, using commercial goods well known to those skilled in the art.
In the present invention, the dipping solution that the impregnation uses preferably includes the component of following parts by weight:
70 parts of RFI solution, 20 parts of RF resin liquid, 10 parts of conduction liquid nonylphenol polyoxyethylene ether.
In the present invention, the RFI solution preferably includes the component of following mass fraction: 95 parts of Heveatex, isophthalic two
5 parts of resinox.In the present invention, the hydrogen bond between the resorcinol-formaldehyde resin and Heveatex is there are polarity,
It not only has good intermiscibility, also has good reinforcing effect, Heveatex has great dipole, with resorcinol-
Oxygen key interaction in formaldehyde resin, generates very strong condensed system by intermolecular physical entanglement, condensed system is in rubber
Function served as bridge is played between antistatic strength cloth, i.e. resorcinol-formaldehyde resin and antistatic strength is furnished with fairly good
Also there is a fairly good combination in conjunction with, Heveatex and surface layer, combination principle is methylol in resorcinol-formaldehyde resin and anti-
Dehydrating polycondensation, i.e., methylol and polyamides in resorcinol-formaldehyde resin occur for the active oxygen in electrostatic strength cloth fiber molecule
Dehydration occurs between the amide group of amine, it is living between RFI solution and antistatic strength measuring fiber during dehydration
Bold and vigorous oxygen is combined, and the bonding force between antistatic strength cloth and surface layer is improved.
The present invention does not have special restriction to the source of the Heveatex, using well known to those skilled in the art commercially available
Commodity.
In the present invention, the hydroxyl value of the conduction liquid nonylphenol polyoxyethylene ether is preferably 85 ± 3mg KOH/g, and pH value is excellent
6.0~7.0 are selected as, water content (wt)≤0.8%, cloud point is 60~67 DEG C.The present invention is to the nonylphenol polyoxyethylene ether
Source there is no special restriction, using commercial goods well known to those skilled in the art.
In the present invention, the preparation method of the RF resin liquid preferably includes following steps: by resorcinol, formaldehyde with
NaOH mixing, occurs polymerization reaction, obtains RF resin liquid.
In the present invention, the mass ratio of the resorcinol, formaldehyde and NaOH are preferably 1:7:1.
In the present invention, the temperature of the polymerization reaction is preferably room temperature, does not need additional heating or cooling, more preferably
It is 26 DEG C；The time of the polymerization reaction is preferably 1~2 day.
In the present invention, the pH value of the dipping solution is preferably 10.0~11.0；The present invention reaches institute by adding ammonium hydroxide
State pH value.In the present invention, the mass concentration of the ammonium hydroxide is preferably 28%.In the present invention, ammonium hydroxide can postpone RFI solution
Reduction will not lead to the reduction of RFI solution bonding force because storing for a long time so that the bonding force of dipping solution is stablized.
In the present invention, the dipping process preferably includes following steps:
The antistatic strength cloth is after dipping solution impregnates successively through hot-stretch, thermal finalization and cooling treatment.
In the present invention, the antistatic strength cloth is impregnated through dipping solution, obtains antistatic strength cloth after impregnation.The present invention
There is no special restriction to the concrete mode of the immersion, using immersion way well known to those skilled in the art, specifically
, it is carried out such as in impregnation equipment, the impregnation equipment includes steeping vat, hothouse, heat stretch machine and devices for taking-up.
It obtains after impregnation after antistatic strength cloth, the present invention is preferably by antistatic strength cloth after the impregnation successively through hot-drawn
It stretches, thermal finalization and cooling treatment.In the present invention, the temperature of the hot-stretch is preferably 185 ± 5 DEG C, and more preferably 180 DEG C；
The time of the hot-stretch is preferably 2~2.5min, more preferably 2min；The tension of the hot-stretch is preferably 20000~
22000N.In the present invention, the molecule when hot-stretch in dipping solution is more active, and when hot-stretch is easy to carrying out molecule into weight
New marshalling tends to orient, available excellent hot-stretch effect.
After the completion of hot-stretch, the present invention carries out thermal finalization to hot-stretch product.In the present invention, the temperature of the thermal finalization
Preferably 185 ± 5 DEG C, more preferably 180 DEG C；The time of the thermal finalization is preferably 2~2.5min, more preferably 2min；Institute
The tension for stating thermal finalization is preferably 20000~22000N.In the present invention, of the tension of the thermal finalization lower than hot-stretch
Power, so that the antistatic strength after hot-stretch is furnished with a certain amount of retraction, plastic deformation part is fixed, elastic part
Restore, and then eliminates internal stress.
After the completion of thermal finalization, the present invention cools down thermal finalization product, obtains the antistatic strength cloth of dipping process.?
In the present invention, the final temperature of the cooling is preferably room temperature, and more preferably 22 ± 5 DEG C.Concrete mode of the present invention to the cooling
There is no special restriction, using the type of cooling well known to those skilled in the art, specifically, such as natural cooling.In this hair
In bright, the hot-stretch, thermal finalization and cooling treatment can reduce positive carry elongation and percent thermal shrinkage, improve rubber board size
Stability extends the service life of rubber slab.
The present invention also provides the preparation methods of anti-static rubber slab described in above-mentioned technical proposal, comprising the following steps:
(1) nitrile rubber weighs raw material according to the formula on surface layer and is kneaded, obtain rubber compound after over-mastication is handled；
(2) rubber compound that the step (1) obtains is rolled, obtains film；
(3) the antistatic strength cloth of film and dipping process that the step (2) obtains is formed, obtains three layers of folder
The molded rubber plate of cored structure；
(4) the molded rubber plate that the step (3) obtains is vulcanized, obtains anti-static rubber slab.
In the present invention, nitrile rubber weighs raw material according to the formula on surface layer and is kneaded, mixed after over-mastication is handled
Refining glue.It in the present invention, further preferably include cutting glue before the nitrile rubber is plasticated.In the present invention, the glue of cutting is by nitrile rubber
Dispersion convenient for ingredient, is plasticated and mixed refining process.The present invention does not have special restriction to the concrete mode for cutting glue, using this
Glue mode is cut known to the technical staff of field.
After cutting glue, the present invention plasticates the nitrile rubber after cutting glue.In the present invention, the temperature plasticated is preferably 50
~80 DEG C, more preferably 60~70 DEG C.In the present invention, described plasticate can reduce the elasticity of nitrile rubber, increase plasticity, and
Mobility appropriate is obtained, to meet the requirement for being kneaded, roll, forming, vulcanizing machining process.The present invention plasticates to described
Device there is no special restriction, using open mill well known to those skilled in the art.
After the completion of nitrile rubber is plasticated, the present invention weighs raw material according to the formula on surface layer and is kneaded, and obtains rubber compound.This
Invention does not have special restriction to the device of the mixing, using mixer well known to those skilled in the art.
After obtaining rubber compound, the present invention rolls the rubber compound, obtains film.In the present invention, the film
It is preferably dimensioned to be width 1100 × thickness, 1.6 × length 40000mm.The present invention does not have special limit to the device of the calendering
It is fixed, using calender well known to those skilled in the art, specifically, such as two roller L type calenders.
In the present invention, heat refining is preferably carried out before the mixing rubber calendering.Heat refining uses opening rubber mixing machine, in the present invention
In, the heat refining successively includes thick refining and refining, and thick refining roll spacing is 2-3 millimeters, and refining roll spacing is 1 millimeter hereinafter, the thick refining
Temperature be preferably 40~50 DEG C；The temperature of preliminary roller is preferably 50~60 DEG C when the refining, and the temperature of back roller is preferably 45~
55℃。
After obtaining film, the present invention forms the antistatic strength cloth of the film and dipping process, obtains three layers
The molded rubber plate of sandwich structure.In the present invention, the molding specific steps include: to decontrol the film, stretch it is flat, so
The antistatic strength cloth of dipping process is taped against above afterwards, both sides are overlapped, and drag flat, then an other film are placed in dipping process
On the surface of antistatic strength cloth, stretch flat.
After obtaining molded rubber plate, the present invention vulcanizes the molded rubber plate, obtains anti-static rubber slab.At this
In invention, the temperature of the vulcanization is preferably 145 ± 5 DEG C, and the pressure of the vulcanization is preferably 15 ± 0.5MPa, the vulcanization
Speed is preferably 0.5 ± 0.01 meter/and it is per second.
The present invention does not have special restriction to the device of the vulcanization, is using vulcanizer well known to those skilled in the art
Can, specifically, such as drum vulcanizer.
After the completion of vulcanization, sulfur product is obtained anti-static rubber slab by conventional cooling, deburring, arrangement by the present invention.
Anti-static rubber slab provided by the invention and preparation method thereof is described in detail below with reference to embodiment, but
It is that they cannot be interpreted as limiting the scope of the present invention.
Embodiment 1
By 100 parts of nitrile rubber of formula, 60 parts of conductive black, 20 parts of aromatic naphtha, 5 parts of zinc oxide, 1.2 parts of stearic acid, promote
Each raw material is weighed into 1.2 parts of agent M, 1 part of antioxidant 4010,2.0 parts of Sulfur.
95 parts of Heveatex are taken, 5 parts of resorcinol-formaldehyde resin mixing obtain RFI solution；5 parts of resorcinol are taken, first
35 parts of aldehyde, at 26 DEG C, 5 parts of NaOH is added, are stirred condensation reaction 1 day, obtain RF resin liquid；70 parts of RFI solution are taken, RF
20 parts of resin liquid, 10 parts of conduction liquid nonylphenol polyoxyethylene ether and ammonium hydroxide (mass concentration 28%) mix, and obtain dipping solution,
The pH value of dipping solution is 11.0, and dipping solution is placed in the steeping vat in impregnation equipment, EP200 cloth is immersed in dipping solution,
Hot-stretch 2min is carried out under 185 DEG C, tension 22000N, thermal finalization 2min is carried out under 185 DEG C, tension 22000N, then
22 DEG C are naturally cooled to, the antistatic strength cloth of dipping process is obtained.
Nitrile rubber is after cutting glue and 50 DEG C of processing of plasticating；It is mixed in mixer that raw material is weighed according to the formula on surface layer
Refining, obtains rubber compound；Rubber compound is first slightly refined at 40 DEG C, is then refined, has been refined at 50 DEG C of preliminary roller, 45 DEG C of back roller
Roll in two roller L type calenders after, obtains the film of width 1100 × thickness, 1.6 × length 40000mm；Film exists
Decontroled in case, stretch flat, then the antistatic strength cloth of dipping process is taped against above, both sides are overlapped, drag it is flat, then other one
Film is placed on the surface of antistatic strength cloth of dipping process, stretches flat, obtains molded rubber plate, molded rubber plate is in temperature
Be 145 DEG C, pressure 15MPa, speed is after being vulcanized in 0.49 meter/drum vulcanizer per second, by conventional cooling,
Deburring, arrangement obtain anti-static rubber slab.
Embodiment 2
By 100 parts of nitrile rubber of formula, 60 parts of conductive black, 20 parts of aromatic naphtha, 5 parts of zinc oxide, 1.2 parts of stearic acid, promote
Each raw material is weighed into 1.2 parts of agent M, 1 part of antioxidant 4010,2.0 parts of Sulfur.
95 parts of Heveatex are taken, 5 parts of resorcinol-formaldehyde resin mixing obtain RFI solution；5 parts of resorcinol are taken, first
35 parts of aldehyde, at 26 DEG C, 5 parts of NaOH is added, are stirred condensation reaction 2 days, obtain RF resin liquid；70 parts of RFI solution are taken, RF
20 parts of resin liquid, 10 parts of conduction liquid nonylphenol polyoxyethylene ether and ammonium hydroxide (mass concentration 28%) mix, and obtain dipping solution,
The pH value of dipping solution is 10.0, and dipping solution is placed in the steeping vat in impregnation equipment, EP200 cloth is immersed in dipping solution,
Hot-stretch 2min is carried out under 180 DEG C, tension 22000N, thermal finalization 2min is carried out under 180 DEG C, tension 22000N, then
27 DEG C are naturally cooled to, the antistatic strength cloth of dipping process is obtained.
Nitrile rubber is after cutting glue and 80 DEG C of processing of plasticating；It is mixed in mixer that raw material is weighed according to the formula on surface layer
Refining, obtains rubber compound；Rubber compound is first slightly refined at 50 DEG C, is then refined, has been refined at 60 DEG C of preliminary roller, 55 DEG C of back roller
Roll in two roller L type calenders after, obtains the film of width 1100 × thickness, 1.6 × length 40000mm；Film exists
Decontroled in case, stretch flat, then the antistatic strength cloth of dipping process is taped against above, both sides are overlapped, drag it is flat, then other one
Film is placed on the surface of antistatic strength cloth of dipping process, stretches flat, obtains molded rubber plate, molded rubber plate is in temperature
It is 140 DEG C, pressure 14.5MPa, speed is, by conventional cold after being vulcanized in 0.5 meter/drum vulcanizer per second
But, deburring, arrangement obtain anti-static rubber slab.
Comparative example 1
Anti-static rubber slab is prepared using with the identical preparation method of embodiment 1, difference, which is only that, does not add impregnation
The antistatic strength cloth of processing.
The performance of anti-static rubber slab made from Examples 1 to 2 and comparative example is tested, the results are shown in Table 1,
As can be seen from Table 1, it is skeleton that the present invention is added to the antistatic strength cloth of one layer of dipping process among anti-static rubber slab
Layer, increases tearing strength, extends service life, and by the raw material meeting in the antistatic strength cloth and surface layer of dipping process
It is combined together, increases the bonding on surface layer and antistatic strength cloth.
The performance test results of anti-static rubber slab made from 1 Examples 1 to 2 of table and comparative example
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (7)
1. a kind of anti-static rubber slab, which is characterized in that the anti-static rubber slab has three layers of sandwich structure, the sandwich knot
The sandwich layer of structure is the antistatic strength cloth of dipping process, and the surface layer of the sandwich structure includes the component of following parts by weight:
100 parts of nitrile rubber, 60 parts of conductive black, 20 parts of aromatic naphtha, 5 parts of zinc oxide, 1.2 parts of stearic acid, captax 1.2
Part, 1 part of antioxidant 4010,2.0 parts of Sulfur；
The dipping solution that the dipping process uses includes the component of following parts by weight:
70 parts of RFI solution, 20 parts of RF resin liquid, 10 parts of conduction liquid nonylphenol polyoxyethylene ether；
For the preparation method of the RF resin liquid the following steps are included: resorcinol, formaldehyde are mixed with NaOH, generation polymerization is anti-
It answers, obtains RF resin liquid, the mass ratio of the resorcinol, formaldehyde and NaOH is 1:7:1.
2. anti-static rubber slab according to claim 1, which is characterized in that the antistatic strength cloth is EP200 cloth.
3. anti-static rubber slab according to claim 1, which is characterized in that the RFI solution includes following mass fraction
Component: 95 parts of Heveatex, 5 parts of resorcinol-formaldehyde resin.
4. anti-static rubber slab according to claim 1, which is characterized in that the dipping process the following steps are included:
The antistatic strength cloth is after dipping solution impregnates successively through hot-stretch, thermal finalization and cooling treatment.
5. anti-static rubber slab according to claim 4, which is characterized in that the temperature of the hot-stretch is 185 ± 5 DEG C,
The time of hot-stretch is 2~2.5min, and the tension of hot-stretch is 20000~22000N.
6. anti-static rubber slab according to claim 5, which is characterized in that the temperature of the thermal finalization is 185 ± 5 DEG C,
The time of thermal finalization is 2~2.5min, and the tension of thermal finalization is 20000~22000N.
7. the preparation method of anti-static rubber slab described in claim 1~6 any one, comprising the following steps:
(1) nitrile rubber weighs raw material according to the formula on surface layer and is kneaded, obtain rubber compound after over-mastication is handled；
(2) rubber compound that the step (1) obtains is rolled, obtains film；
(3) the antistatic strength cloth of film and dipping process that the step (2) obtains is formed, obtains three layers of sandwich knot
The molded rubber plate of structure；
(4) the molded rubber plate that the step (3) obtains is vulcanized, obtains anti-static rubber slab.
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| CN112060720A (en) * | 2020-09-26 | 2020-12-11 | 萧县奥新农业科技有限公司 | Anti-static rubber plate and splicing method thereof |
| CN115056552A (en) * | 2022-06-21 | 2022-09-16 | 三河市长城橡胶有限公司 | Rubber pad and preparation method and application thereof |
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