CN109912906A - A kind of tabletting of washing machine outer cylinder PVC elastomeric material and preparation method - Google Patents
A kind of tabletting of washing machine outer cylinder PVC elastomeric material and preparation method Download PDFInfo
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Abstract
The present invention discloses a kind of washing machine outer cylinder tabletting PVC elastomeric material and preparation method, the tabletting of washing machine outer cylinder is made of with PVC elastomeric material PVC resin powder, powdered nitrile rubber, compatilizer, epoxidized soybean oil, plasticizer, stabilizer and inorganic filler, the preparation method of washing machine outer cylinder tabletting PVC elastomeric material, comprising the following steps: weighing；It impregnates；Mixing；It is granulated；Extrusion molding is cut；Welding fabrication.PVC elastomeric material resistance to ag(e)ing provided by the invention is good, solvent resistance is good, wear-resisting tear-resistant and excellent water resistance, compared with ethylene-propylene diene copolymer, material of the present invention can satisfy the requirement of sweat soldering, without vulcanization, high production efficiency, it is at low cost, washing machine outer cylinder tabletting substitution ethylene-propylene diene copolymer tabletting can be used as.
Description
Technical field
The present invention relates to the tabletting of washing machine outer cylinder PVC elastomeric materials and preparation method field, particularly belong to one kind and wash
The clothing tabletting of machine outer cylinder PVC elastomeric material and preparation method.
Background technique
A seed type of the roller washing machine as washing machine, is widely used in the daily life of the people, wherein outer cylinder
Tabletting is the important composition component in roller washing machine.The outer cylinder tabletting of roller washing machine has ethylene-propylene-diene monomer glue material mostly at present
Material is made.Ethylene propylene diene rubber is the terpolymer of ethylene, propylene and non-conjugated diene hydrocarbon.Ethylene propylene diene rubber need through
Cross it is high temperature vulcanized after, could have resistance to ozone, heat-resisting, weather-proof, water-fast ageing-resistant superperformance.The high temperature of ethylene propylene diene rubber
Vulcanization production efficiency is low, and energy consumption is high, while the leftover pieces occurred in its subsequent deep-processing process are difficult to recycle, be easy to cause
The waste of material.Although and common flexible PVC material can produce outer cylinder pressure by the way of squeezing out welding without vulcanization
Piece, high production efficiency.But common flexible PVC material is not able to satisfy the aging requirement that its heat resisting temperature is 80~100 DEG C, together
The flexible PVC material of Shi Putong is during welding fabrication, the phenomenon that commissure is cracked often.
Summary of the invention
It is an object of the present invention to provide a kind of tabletting of washing machine outer cylinder PVC elastomeric material and preparation methods, can solve
State the problem of mentioning in background technique.It is suitble to promote the use of in the outer cylinder tabletting of production roller washing machine.
The technical solution adopted in the present invention is as follows:
A kind of washing machine outer cylinder tabletting PVC elastomeric material, it is characterised in that by PVC resin powder, powdered nitrile rubber, compatible
Agent, epoxidized soybean oil, plasticizer, stabilizer and inorganic filler composition, wherein the weight ratio of each component addition are as follows: PVC
Resin-oatmeal is 100 parts, powdered nitrile rubber is 20~60 parts, compatilizer is 5~10 parts, epoxidized soybean oil is 3~8 parts, plasticizer is
40~80 parts, stabilizer be 5 parts, inorganic filler is 20~40 parts, the mixed proportion of the PVC resin powder and powdered nitrile rubber is
1:0.2~1:0.6, the PVC resin powder have the one or more of other different polymerization degree Corvics of the degree of polymerization 1300 multiple
It is configured to, the main body of the powdered nitrile rubber is butadiene nitrile polymer, the powder that wherein acrylonitrile content is 30%~40%
Last butyronitrile is preferably to be blended with PVC resin powder, and the addition of powdered nitrile rubber can make material have caoutchouc elasticity, can reduce
The dosage of plasticizer promotes the whole solvent resistance of material, the temperature classification of material can be made to be increased to 80~100 DEG C, institute
The terpolymer that compatilizer is stated by methyl methacrylate, butadiene, styrene is made, and can increase powdered nitrile rubber and PVC
The compatibility of resin-oatmeal, epoxide number >=6.6 of the epoxidized soybean oil, iodine value≤3.0 of epoxidized soybean oil, the plasticizer are
One or more of this diformazan dioctyl phthalate, trioctyl trimellitate (TOTM) and polyester plasticizer compounding are made, the stabilizer
For calcium-zinc composite stabilizing agent, stabilizer includes zinc stearate, calcium stearate, hydrotalcite, stearic acid and antibacterial mildew inhibitor, also includes
At least one of antioxidant and ultraviolet absorber are made, and the antibacterial mildew inhibitor is the double phenoxazine arsenic of 10,10 '-oxos, to hydroxyl
Benzoic ether, N, in N- dimethyl-N '-phenyl (- N- fluorine dichloro methyl mercapto) sulfamide, isothiazolinone and its derivative
One or more of compoundings be made, the antioxidant is at least one of antioxidant 1010, antioxidant 1076 and irgasfos 168
It is made, the ultraviolet absorber is that at least one of ultraviolet absorber UV327, UV329, UV531 and UV770 are made, described
Inorganic filler is made of powdered whiting or precipitated calcium carbonate.
Using a kind of preparation method of above-mentioned washing machine outer cylinder tabletting PVC elastomeric material, the specific steps are that:
Step 1: it weighing: by each component according to the number range in claim 1, is precisely weighed；
Step 2: it impregnates: the plasticizer of the powdered nitrile rubber after being precisely weighed according to claim 1 is impregnated 6~12 hours
For use；
Step 3: mixing: using high-speed mixer by the PVC resin powder after being precisely weighed according to claim 1, stabilizer
It is mixed with epoxidized soybean oil, increases high-speed mixer temperature and pass through height when the temperature of high-speed mixer is increased to 90~95 DEG C
The powdered nitrile rubber and plasticizer that the barrel addition of fast mixing machine was impregnated with plasticizer, then sequentially add compatilizer, stabilizer
It is sufficiently mixed with inorganic filler, discharges from high-speed mixer, it is subsequent spare to obtain mixture；
Step 4: it is granulated: mixture being granulated using double rank granulation machine, the temperature of double rank granulation machine Duan Yiqu to 8th area
Degree parameter is set as 95 DEG C~120 DEG C, and double rank granulation machine Duan Jiuqu to No.12 District temperature parameter is set as 100 DEG C~130 DEG C, machine
Head temperature be 125 DEG C~150 DEG C, engine speed be 180~300 turns/min, control the residence time of mixture, mixture at
Under conditions of group, residence time of the mixture in pelletizer is reduced as far as possible, the temperature near double rank granulation machine hopper should
It is minimum, it then gradually rises, temperature reaches highest at the mouth mold of double rank granulation machine rear end, and the material air after granulation is cooled to often
Wen Hou obtains modified mixture pellet；
Step 5: extrusion molding is cut: above-mentioned modified mixture pellet being carried out extrusion molding through single screw extrusion machine, is passed through
The compound particles pellet after being granulated plasticizing is crossed, fluidity of molten improves after fusing, and the control of extrusion molding temperature is appropriate, and single screw rod is squeezed
It is 125 DEG C~130 DEG C that the parameter of machine, which is set as area's temperature, out, and two area's temperature are 130 DEG C~140 DEG C, and three area's temperature are 140 DEG C
~145 DEG C, four area's temperature are 145 DEG C~150 DEG C, and five area's temperature are 145 DEG C~150 DEG C, and head temperature is 150 DEG C, host frequency
30~50HZ of rate, cooling in cold rinse bank from entering after single screw extrusion machine depanning, the temperature of extruded material is reduced to 25 DEG C~30
DEG C when, cut according to the size of regulation, obtain washing machine outer cylinder tabletting PVC elastomeric material.
Compared with the prior art, beneficial effects of the present invention are as follows:
Compared with the prior art, the present invention is solved is washed using the roller that high temperature vulcanized ethylene propylene diene monomer (EPDM) material makes
The problem of clothing machine outer cylinder tabletting, production efficiency is low, and energy consumption is high, and leftover pieces are difficult to recycle, be easy to cause the waste of material；
Solve the external cylinder of drum-type washing machine tabletting made using common flexible PVC material, be not able to satisfy its heat resisting temperature be 80~
100 DEG C of aging requirement, while common flexible PVC material, during welding fabrication, what cracking occurred often in commissure asks
Topic.Present invention has the advantage that 1) powdered nitrile rubber addition cooperation PVC resin powder, compatilizer, epoxidized soybean oil, plasticizer,
Stabilizer and inorganic filler have both the elasticity of rubber so that the temperature resistant grade of PVC elastomeric material is increased to 80~100 DEG C,
The additive amount for reducing plasticizer improves the performance of the whole organic solvent-resistant of material；2) PVC elastomeric material has good
Resistance to ozone and weather-resistant performance, the good integral strength of material, improve the tear resistance and flame resistance of material, improve
Oil resistant and chemical resistance, solvent resistance is good, has both good processing performance, is conducive to squeeze out welding fabrication；3) its
Used in compatilizer be methyl methacrylate, butadiene, styrene terpolymer (referred to as: MBS resin), MBS tree
Rouge compatilizer and the thermodynamic compatibility of PVC material are good, integrally improve the processing fluidity of material system.
Material of the present invention is the high-elasticity thermoplastic elastic material easily welded, is compounded using PVC material with powdered nitrile rubber
Formula system has both the workability of thermoplastic material so that the elasticity of the existing rubber of material, organic solvent resistance, resistance to smelly
Oxygen performance, weather-resistant performance, oil resistant and chemical-resistant resistance it is functional, there is certain anti-flammability, processing fluidity
It is good, it is easy to carry out extrusion welding fabrication, while leftover pieces can be recycled, be suitble to when manufacturing the tabletting of washing machine outer cylinder
It promotes the use of.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, below by specific embodiment to this
Invention is described further, and technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described
Embodiment be only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ability
Domain those of ordinary skill every other embodiment obtained without creative efforts belongs to invention protection
Range.
Below with reference to embodiment and specific embodiment, the present invention is described in further detail.
A kind of washing machine outer cylinder tabletting PVC elastomeric material, it is characterised in that by PVC resin powder, powdered nitrile rubber, compatible
Agent, epoxidized soybean oil, plasticizer, stabilizer and inorganic filler composition, wherein the weight ratio of each component addition are as follows: PVC
Resin-oatmeal is 100 parts, powdered nitrile rubber is 20~60 parts, compatilizer is 5~10 parts, epoxidized soybean oil is 3~8 parts, plasticizer is
40~80 parts, stabilizer be 5 parts, inorganic filler is 20~40 parts, the mixed proportion of the PVC resin powder and powdered nitrile rubber is
1:0.2~1:0.6, the PVC resin powder have the one or more of other different polymerization degree Corvics of the degree of polymerization 1300 multiple
It is configured to, the main body of the powdered nitrile rubber is butadiene nitrile polymer, the powder that wherein acrylonitrile content is 30%~40%
Last butyronitrile is preferably to be blended with PVC resin powder, and the addition of powdered nitrile rubber can make material have caoutchouc elasticity, can reduce
The dosage of plasticizer promotes the whole solvent resistance of material, the temperature classification of material can be made to be increased to 80~100 DEG C, institute
The terpolymer that compatilizer is stated by methyl methacrylate, butadiene, styrene is made, and can increase powdered nitrile rubber and PVC
The compatibility of resin-oatmeal, epoxide number >=6.6 of the epoxidized soybean oil, iodine value≤3.0 of epoxidized soybean oil, the plasticizer are
One or more of this diformazan dioctyl phthalate, trioctyl trimellitate (TOTM) and polyester plasticizer compounding are made, the stabilizer
For calcium-zinc composite stabilizing agent, stabilizer includes zinc stearate, calcium stearate, hydrotalcite, stearic acid and antibacterial mildew inhibitor, also includes
At least one of antioxidant and ultraviolet absorber are made, and the antibacterial mildew inhibitor is the double phenoxazine arsenic of 10,10 '-oxos, to hydroxyl
Benzoic ether, N, in N- dimethyl-N '-phenyl (- N- fluorine dichloro methyl mercapto) sulfamide, isothiazolinone and its derivative
One or more of compoundings be made, the antioxidant is at least one of antioxidant 1010, antioxidant 1076 and irgasfos 168
It is made, the ultraviolet absorber is that at least one of ultraviolet absorber UV327, UV329, UV531 and UV770 are made, described
Inorganic filler is made of powdered whiting or precipitated calcium carbonate.
Using a kind of preparation method of above-mentioned washing machine outer cylinder tabletting PVC elastomeric material, the specific steps are that:
Step 1: it weighing: by each component according to the number range in claim 1, is precisely weighed；
Step 2: it impregnates: the plasticizer of the powdered nitrile rubber after being precisely weighed according to claim 1 is impregnated 6~12 hours
For use；
Step 3: mixing: using high-speed mixer by the PVC resin powder after being precisely weighed according to claim 1, stabilizer
It is mixed with epoxidized soybean oil, increases high-speed mixer temperature and pass through height when the temperature of high-speed mixer is increased to 90~95 DEG C
The powdered nitrile rubber and plasticizer that the barrel addition of fast mixing machine was impregnated with plasticizer, then sequentially add compatilizer, stabilizer
It is sufficiently mixed with inorganic filler, discharges from high-speed mixer, it is subsequent spare to obtain mixture；
Step 4: it is granulated: mixture being granulated using double rank granulation machine, the temperature of double rank granulation machine Duan Yiqu to 8th area
Degree parameter is set as 95 DEG C~120 DEG C, and double rank granulation machine Duan Jiuqu to No.12 District temperature parameter is set as 100 DEG C~130 DEG C, machine
Head temperature be 125 DEG C~150 DEG C, engine speed be 180~300 turns/min, control the residence time of mixture, mixture at
Under conditions of group, residence time of the mixture in pelletizer is reduced as far as possible, the temperature near double rank granulation machine hopper should
It is minimum, it then gradually rises, temperature reaches highest at the mouth mold of double rank granulation machine rear end, and the material air after granulation is cooled to often
Wen Hou obtains modified mixture pellet；
Step 5: extrusion molding is cut: above-mentioned modified mixture pellet being carried out extrusion molding through single screw extrusion machine, is passed through
The compound particles pellet after being granulated plasticizing is crossed, fluidity of molten improves after fusing, and the control of extrusion molding temperature is appropriate, and single screw rod is squeezed
It is 125 DEG C~130 DEG C that the parameter of machine, which is set as area's temperature, out, and two area's temperature are 130 DEG C~140 DEG C, and three area's temperature are 140 DEG C
~145 DEG C, four area's temperature are 145 DEG C~150 DEG C, and five area's temperature are 145 DEG C~150 DEG C, and head temperature is 150 DEG C, host frequency
30~50HZ of rate, cooling in cold rinse bank from entering after single screw extrusion machine depanning, the temperature of extruded material is reduced to 25 DEG C~30
DEG C when, cut according to the size of regulation, obtain washing machine outer cylinder tabletting PVC elastomeric material.
In following embodiment, PVC resin powder is unified into purchased from Zhenjiang, model US-70；Powdered nitrile rubber is purchased from French Erie
Europe, model P83；Compatilizer is MBS, purchased from South Korea LG chemistry, model MB885；Epoxidized soybean oil is purchased from Haier's Ma, model
For HM-01R.
Embodiment one:
The tabletting of washing machine outer cylinder presses following material number accurate weighing with PVC elastomeric material in the present invention:
PVC resin powder is 100 parts, powdered nitrile rubber is 20~60 parts, compatilizer is 5~10 parts, epoxidized soybean oil is 3~8
Part, plasticizer are 40~80 parts, stabilizer is 5 parts, inorganic filler is 20~40 parts；
Powdered nitrile rubber after being precisely weighed plasticizer is impregnated 12 hours for use；
PVC resin powder after being precisely weighed, stabilizer and epoxidized soybean oil are mixed, high-speed mixer temperature is increased, when
When the temperature of high-speed mixer is increased to 90~95 DEG C, the powder that was impregnated by the barrel addition of high-speed mixer with plasticizer
It is sufficiently mixed then to sequentially add compatilizer, calcium-zinc composite stabilizing agent, antibacterial mildew inhibitor and inorganic filler for butyronitrile and plasticizer
It closes, discharges from high-speed mixer, it is subsequent spare to obtain mixture；
Above-mentioned mixture is added in double rank granulation machine and is granulated, the temperature parameter of double rank granulation machine Duan Yiqu to 8th area
95 DEG C~120 DEG C are set as, double rank granulation machine Duan Jiuqu to No.12 District temperature parameter is set as 100 DEG C~130 DEG C, head temperature
It is 125 DEG C~150 DEG C, engine speed is 180~300 turns/min, the residence time of mixture is controlled, in the pockets of item of mixture
Under part, residence time of the mixture in pelletizer is reduced as far as possible, the temperature near double rank granulation machine hopper should be minimum, with
After gradually rise, temperature reaches highest at the mouth mold of double rank granulation machine rear end, after the material air after granulation is cooled to room temperature, obtains
To modified mixture pellet；
The above-mentioned modified mixture pellet made is subjected to extrusion molding through single screw extrusion machine, after being granulated plasticizing
Compound particles pellet, fluidity of molten improves after fusing, as far as possible residence time of the reduction material in screw rod, extrusion molding temperature
Degree control is appropriate, and it is 125 DEG C~130 DEG C that the parameter of single screw extrusion machine, which is set as area's temperature, and two area's temperature are 130 DEG C~
135 DEG C, three area's temperature are 130 DEG C~135 DEG C, and four area's temperature are 130 DEG C~135 DEG C, and five area's temperature are 130 DEG C~135 DEG C, machine
Head temperature is 135 DEG C, host 30~50HZ of frequency, cooling in cold rinse bank from entering after single screw extrusion machine depanning, extruded material
Temperature when being reduced to 25 DEG C~30 DEG C, cut according to the size of regulation, obtain washing machine outer cylinder tabletting PVC elastomer
Material；
After the above-mentioned size according to regulation is cut, obtained washing machine outer cylinder tabletting PVC elastomeric material gum cover is pressed
According to defined size, welding lopping shape processing is carried out using PVC gum cover bonding machine, the specific size for enclosing shape carries out according to the rules,
Obtain the washing machine outer cylinder tabletting finished product made of above-mentioned PVC elastomeric material.
Embodiment two:
The tabletting of washing machine outer cylinder presses following material number accurate weighing with PVC elastomeric material in the present invention:
Powdered nitrile rubber after being precisely weighed plasticizer is impregnated 8 hours for use；
PVC resin powder after being precisely weighed, stabilizer and epoxidized soybean oil are mixed, high-speed mixer temperature is increased, when
When the temperature of high-speed mixer is increased to 90~95 DEG C, the powder that was impregnated by the barrel addition of high-speed mixer with plasticizer
It is sufficiently mixed then to sequentially add compatilizer, calcium-zinc composite stabilizing agent, antibacterial mildew inhibitor and inorganic filler for butyronitrile and plasticizer
It closes, discharges from high-speed mixer, it is subsequent spare to obtain mixture；
Above-mentioned mixture is added in double rank granulation machine and is granulated, the temperature parameter of double rank granulation machine Duan Yiqu to 8th area
95 DEG C~120 DEG C are set as, double rank granulation machine Duan Jiuqu to No.12 District temperature parameter is set as 100 DEG C~130 DEG C, head temperature
It is 125 DEG C~150 DEG C, engine speed is 180~300 turns/min, the residence time of mixture is controlled, in the pockets of item of mixture
Under part, residence time of the mixture in pelletizer is reduced as far as possible, the temperature near double rank granulation machine hopper should be minimum, with
After gradually rise, temperature reaches highest at the mouth mold of double rank granulation machine rear end, after the material air after granulation is cooled to room temperature, obtains
To modified mixture pellet；
The above-mentioned modified mixture pellet made is subjected to extrusion molding through single screw extrusion machine, after being granulated plasticizing
Compound particles pellet, fluidity of molten improves after fusing, as far as possible residence time of the reduction material in screw rod, extrusion molding temperature
Degree control is appropriate, and it is 130 DEG C~135 DEG C that the parameter of single screw extrusion machine, which is set as area's temperature, and two area's temperature are 135 DEG C~
140 DEG C, three area's temperature are 135 DEG C~140 DEG C, and four area's temperature are 135 DEG C~140 DEG C, and five area's temperature are 135 DEG C~140 DEG C, machine
Head temperature is 140 DEG C, host 30~50HZ of frequency, cooling in cold rinse bank from entering after single screw extrusion machine depanning, extruded material
Temperature when being reduced to 25 DEG C~30 DEG C, cut according to the size of regulation, obtain washing machine outer cylinder tabletting PVC elastomer
Material；
After the above-mentioned size according to regulation is cut, obtained washing machine outer cylinder tabletting PVC elastomeric material gum cover is pressed
According to defined size, welding lopping shape processing is carried out using PVC gum cover bonding machine, the specific size for enclosing shape carries out according to the rules,
Obtain the washing machine outer cylinder tabletting finished product made of above-mentioned PVC elastomeric material.
Embodiment three:
The tabletting of washing machine outer cylinder presses following material number accurate weighing with PVC elastomeric material in the present invention:
Powdered nitrile rubber after being precisely weighed plasticizer is impregnated 8 hours for use；
PVC resin powder after being precisely weighed, stabilizer and epoxidized soybean oil are mixed, high-speed mixer temperature is increased, when
When the temperature of high-speed mixer is increased to 90~95 DEG C, the powder that was impregnated by the barrel addition of high-speed mixer with plasticizer
It is sufficiently mixed then to sequentially add compatilizer, calcium-zinc composite stabilizing agent, antibacterial mildew inhibitor and inorganic filler for butyronitrile and plasticizer
It closes, discharges from high-speed mixer, it is subsequent spare to obtain mixture；
Above-mentioned mixture is added in double rank granulation machine and is granulated, the temperature parameter of double rank granulation machine Duan Yiqu to 8th area
95 DEG C~120 DEG C are set as, double rank granulation machine Duan Jiuqu to No.12 District temperature parameter is set as 100 DEG C~130 DEG C, head temperature
It is 125 DEG C~150 DEG C, engine speed is 180~300 turns/min, the residence time of mixture is controlled, in the pockets of item of mixture
Under part, residence time of the mixture in pelletizer is reduced as far as possible, the temperature near double rank granulation machine hopper should be minimum, with
After gradually rise, temperature reaches highest at the mouth mold of double rank granulation machine rear end, after the material air after granulation is cooled to room temperature, obtains
To modified mixture pellet；
The above-mentioned modified mixture pellet made is subjected to extrusion molding through single screw extrusion machine, after being granulated plasticizing
Compound particles pellet, fluidity of molten improves after fusing, as far as possible residence time of the reduction material in screw rod, extrusion molding temperature
Degree control is appropriate, and it is 125 DEG C~130 DEG C that the parameter of single screw extrusion machine, which is set as area's temperature, and two area's temperature are 130 DEG C~
135 DEG C, three area's temperature are 130 DEG C~135 DEG C, and four area's temperature are 130 DEG C~135 DEG C, and five area's temperature are 130 DEG C~135 DEG C, machine
Head temperature is 135 DEG C, host 30~50HZ of frequency, cooling in cold rinse bank from entering after single screw extrusion machine depanning, extruded material
Temperature when being reduced to 25 DEG C~30 DEG C, cut according to the size of regulation, obtain washing machine outer cylinder tabletting PVC elastomer
Material；
After the above-mentioned size according to regulation is cut, obtained washing machine outer cylinder tabletting PVC elastomeric material gum cover is pressed
According to defined size, welding lopping shape processing is carried out using PVC gum cover bonding machine, the specific size for enclosing shape carries out according to the rules,
Obtain the washing machine outer cylinder tabletting finished product made of above-mentioned PVC elastomeric material.
Washing machine outer cylinder pressure made of PVC elastomeric material and PVC elastomeric material obtained in above-described embodiment 1~3
Piece, it is as follows that specific experiment tests structure:
Using the shore hardness of PVC elastomeric material obtained in GB/T 2411-2008 method testing example 1~3,
The experimental results are shown inthe following table；
Tension using PVC elastomeric material obtained in GB/T 1040.3-2006 method testing example 1~3 is strong
Degree, the experimental results are shown inthe following table；
Washing machine outer cylinder tabletting made of PVC elastomeric material obtained in Examples 1 to 3 is welded according to the rules respectively
10, no problem is installed on washing machine, carries out system test, tabletting passes through without cracking, test after the completion of test；
Washing machine outer cylinder pressure made of the PVC elastomeric material obtained using GB 21551.4-2010 method test 1~3
The mould proof grade of piece, the experimental results are shown inthe following table.
In summary: laundry made of the PVC elastomeric material and PVC elastomeric material being prepared in Examples 1 to 3
Machine outer cylinder tabletting finished product, the elasticity of existing rubber have both the workability of thermoplastic material, organic solvent resistance, resistance to ozone
Performance, weather-resistant performance, oil resistant and chemical-resistant resistance it is functional, there is certain anti-flammability, processing fluidity is good,
It is easy to carry out extrusion welding fabrication, while leftover pieces can be recycled.Suitable for production external cylinder of drum-type washing machine pressure
Piece substitutes high temperature vulcanized ethylene propylene diene rubber, the rubber material of common flexible PVC material and similar applications.
What has been described above is only a preferred embodiment of the present invention, it is noted that for those of ordinary skill in the art
For, without departing from the concept of the premise of the invention, various modifications and improvements can be made, these belong to the present invention
Protection scope.
Claims (2)
1. a kind of washing machine outer cylinder tabletting PVC elastomeric material, it is characterised in that by PVC resin powder, powdered nitrile rubber, compatible
Agent, epoxidized soybean oil, plasticizer, stabilizer and inorganic filler composition, wherein the weight ratio of each component addition are as follows: PVC
Resin-oatmeal is 100 parts, powdered nitrile rubber is 20~60 parts, compatilizer is 5~10 parts, epoxidized soybean oil is 3~8 parts, plasticizer is
40~80 parts, stabilizer be 5 parts, inorganic filler is 20~40 parts, the mixed proportion of the PVC resin powder and powdered nitrile rubber is
1:0.2~1:0.6, the PVC resin powder have the one or more of other different polymerization degree Corvics of the degree of polymerization 1300 multiple
It is configured to, the main body of the powdered nitrile rubber is butadiene nitrile polymer, the powder that wherein acrylonitrile content is 30%~40%
Last butyronitrile is preferably to be blended with PVC resin powder, and the addition of powdered nitrile rubber can make material have caoutchouc elasticity, can reduce
The dosage of plasticizer promotes the whole solvent resistance of material, the temperature classification of material can be made to be increased to 80~100 DEG C, institute
The terpolymer that compatilizer is stated by methyl methacrylate, butadiene, styrene is made, and can increase powdered nitrile rubber and PVC
The compatibility of resin-oatmeal, epoxide number >=6.6 of the epoxidized soybean oil, iodine value≤3.0 of epoxidized soybean oil, the plasticizer are
One or more of this diformazan dioctyl phthalate, trioctyl trimellitate (TOTM) and polyester plasticizer compounding are made, the stabilizer
For calcium-zinc composite stabilizing agent, stabilizer includes zinc stearate, calcium stearate, hydrotalcite, stearic acid and antibacterial mildew inhibitor, also includes
At least one of antioxidant and ultraviolet absorber are made, and the antibacterial mildew inhibitor is the double phenoxazine arsenic of 10,10 '-oxos, to hydroxyl
Benzoic ether, N, in N- dimethyl-N '-phenyl (- N- fluorine dichloro methyl mercapto) sulfamide, isothiazolinone and its derivative
One or more of compoundings be made, the antioxidant is at least one of antioxidant 1010, antioxidant 1076 and irgasfos 168
It is made, the ultraviolet absorber is that at least one of ultraviolet absorber UV327, UV329, UV531 and UV770 are made, described
Inorganic filler is made of powdered whiting or precipitated calcium carbonate.
2. a kind of preparation method of washing machine outer cylinder tabletting PVC elastomeric material according to claim 1, specific to walk
Suddenly are as follows:
1) it weighs: by each component according to the number range in claim 1, being precisely weighed；
2) it impregnates: the plasticizer of the powdered nitrile rubber after being precisely weighed according to claim 1 is impregnated 6~12 hours for use；
3) mixing: using high-speed mixer that the PVC resin powder after being precisely weighed according to claim 1, stabilizer and epoxy is big
Soya-bean oil mixing increases high-speed mixer temperature and passes through high-speed mixer when the temperature of high-speed mixer is increased to 90~95 DEG C
Barrel the addition powdered nitrile rubber and plasticizer that were impregnated with plasticizer, then sequentially add compatilizer, stabilizer and inorganic fill out
It fills agent to be sufficiently mixed, discharge from high-speed mixer, it is subsequent spare to obtain mixture；
4) it is granulated: mixture being granulated using double rank granulation machine, the temperature parameter in double rank granulation machine Duan Yiqu to 8th area is set
95 DEG C~120 DEG C are set to, double rank granulation machine Duan Jiuqu to No.12 District temperature parameter is set as 100 DEG C~130 DEG C, and head temperature is
125 DEG C~150 DEG C, engine speed is 180~300 turns/min, the residence time of mixture is controlled, in the pockets of condition of mixture
Under, residence time of the mixture in pelletizer is reduced as far as possible, and the temperature near double rank granulation machine hopper should be minimum, then
It gradually rises, temperature reaches highest at the mouth mold of double rank granulation machine rear end, after the material air after granulation is cooled to room temperature, obtains
Modified mixture pellet；
5) extrusion molding is cut: above-mentioned modified mixture pellet being carried out extrusion molding through single screw extrusion machine, is moulded by being granulated
Compound particles pellet after change, fluidity of molten improves after fusing, and the control of extrusion molding temperature is appropriate, the ginseng of single screw extrusion machine
It is 125 DEG C~130 DEG C that number, which is set as area's temperature, and two area's temperature are 130 DEG C~140 DEG C, and three area's temperature are 140 DEG C~145 DEG C,
Four area's temperature are 145 DEG C~150 DEG C, and five area's temperature are 145 DEG C~150 DEG C, and head temperature is 150 DEG C, host frequency 30~
50HZ, it is cooling in cold rinse bank from entering after single screw extrusion machine depanning, when the temperature of extruded material is reduced to 25 DEG C~30 DEG C, press
It is cut according to defined size, obtains washing machine outer cylinder tabletting PVC elastomeric material.
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| CN111286137A (en) * | 2020-04-09 | 2020-06-16 | 宁波尚瑞塑胶实业有限公司 | Modified PVC (polyvinyl chloride) particles and preparation method thereof |
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