CN107955312A - A kind of preparation method and application of composite polrvinyl chloride Plastic valve material - Google Patents
A kind of preparation method and application of composite polrvinyl chloride Plastic valve material Download PDFInfo
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- CN107955312A CN107955312A CN201711318777.2A CN201711318777A CN107955312A CN 107955312 A CN107955312 A CN 107955312A CN 201711318777 A CN201711318777 A CN 201711318777A CN 107955312 A CN107955312 A CN 107955312A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L51/00—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L51/003—Compositions of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers grafted on to macromolecular compounds obtained by reactions only involving unsaturated carbon-to-carbon bonds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F259/00—Macromolecular compounds obtained by polymerising monomers on to polymers of halogen containing monomers as defined in group C08F14/00
- C08F259/02—Macromolecular compounds obtained by polymerising monomers on to polymers of halogen containing monomers as defined in group C08F14/00 on to polymers containing chlorine
- C08F259/04—Macromolecular compounds obtained by polymerising monomers on to polymers of halogen containing monomers as defined in group C08F14/00 on to polymers containing chlorine on to polymers of vinyl chloride
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/10—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polymers containing more than one epoxy radical per molecule
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
Abstract
The invention discloses a kind of preparation method and applications of composite polrvinyl chloride Plastic valve material, this method is used ultrasound, filtering, drying after polyvinyl chloride, methacrylic acid, epoxy resin, o-phthalic acid dibutyl ester, mica, deionized water mixing, then add the peroxidation acid tert-butyl ester, alkyl benzene sulfonic acid ester is modified reaction, modified mixture is added in high-speed mixer again, add 3 sulfopropyl dodecyldimethylammonium hydroxide inner salt high-temperature activations, finally activation modification mixture is polymerize, is suppressed, obtains finished-product material.The Plastic valve material being prepared, its ring stiffness grade is high, tensile strength and compression strength are excellent, has a good application prospect in water supply and sewage work.
Description
Technical field
The present invention relates to this technical field of plastic material, is related specifically to a kind of composite polrvinyl chloride Plastic valve material
Preparation method and application.
Background technology
Valve is for being opened and closed pipeline, control flow direction, the parameter (temperature, pressure and flow) for adjusting and controlling pumped (conveying) medium
Pipeline fittings.According to its function, shut-off valve, check-valves, regulating valve etc. can be divided into.Valve is also divided into cast iron valve according to material
Door, cast steel valve, stainless valve (201,304,316 etc.), chrome-molybdenum steel valve, Chrominm-molybdenum-vanadium steel valve, dual phase steel valve, plastics
Valve, nonstandard customized valve etc..
With the continuous improvement of plastic piping proportion in cold and hot feedwater and industrial pipeline engineer application, plastic conduit
The quality control of Plastic valve, which increasingly seems, in system is even more important.Due to light weight possessed by Plastic valve, it is corrosion-resistant,
Do not adsorb incrustation scale, can it is integrated with plastic piping connection and service life it is long the advantages that, Plastic valve feedwater (especially hot water
With heating) and the plastic piping system of other industrial fluids in, the advantage of its application aspect is that other valves can not be compared.
The main element of Plastic valve is manufactured by injection mold, in recent years, numerically-controlled machine tool is fast-developing, constantly updates, is promoted
The development of mold manufacturing industry, the appearance of precision die, large mold and precise injection molding equipment, make producing for Plastic valve
To fast development.
Polyvinyl chloride, English abbreviation PVC is vinyl chloride monomer in initiators such as peroxide, azo-compounds；Or
The polymer being polymerized under light, heat effect by mechanism of free-radical polymerization.According to the difference of application range, PVC can be divided into：
Universal polyvinyl chloride resin, PVC with high, crosslinked PVC resin.Universal polyvinyl chloride resin is in initiator by vinyl chloride monomer
Under the action of polymerization formed；PVC with high refers to add chain extender polymerization in polymerization of vinyl choride monomer system
The resin formed；Crosslinked PVC resin is to add to polymerize containing the crosslinking agent of diene and polyenoid in polymerization of vinyl choride monomer system
The resin formed.Common polyvinyl chloride valve material, its elongation at break, cold resistance are preferable, but brittleness, hardness, stretching are by force
Degree deficiency, this just needs to be improved pvc material, to meet the application of wider scope.
The content of the invention
In order to solve the above technical problems, the present invention provide a kind of composite polrvinyl chloride Plastic valve material preparation method and
Using this method is used polyvinyl chloride, methacrylic acid, epoxy resin, o-phthalic acid dibutyl ester, mica, deionized water
Ultrasound, filtering, drying after mixing, then add the peroxidation acid tert-butyl ester, alkyl benzene sulfonic acid ester is modified reaction, then will change
Property mixture be added in high-speed mixer, add 3- sulfopropyl dodecyldimethylammonium hydroxide inner salt high-temperature activations, finally will be living
Change modified mixture to be polymerize, suppressed, obtain finished-product material.The Plastic valve material being prepared, its ring stiffness grade height,
Tensile strength and compression strength are excellent, have a good application prospect in water supply and sewage work.
The purpose of the present invention can be achieved through the following technical solutions：
A kind of preparation method of composite polrvinyl chloride Plastic valve material, comprises the following steps：
(1) it is 60-66 parts of polyvinyl chloride, 52-58 parts of methacrylic acid, 25-35 parts of epoxy resin, phthalic acid two is pungent
500 parts of 16-20 parts of fat, 4-6 parts of mica powder, deionized water mixing, when stirring 6-8 is small at 70 DEG C, after then raising temperature to 90 DEG C
Ultrasonic disperse, is washed with deionized filtering mixture 2 times after filtering, when vacuum drying 18-22 is small at 85 DEG C, obtain primary mixed
Compound；
(2) deionized water of 10 times of weight is added in the primary mix obtained to step (1), while it is pungent to add peroxidating
6-8 parts of tert-butyl acrylate, 3-5 parts of alkyl benzene sulfonic acid ester, adjust pH to 5.5 with acetic acid solution, solution system are heated to 80-90 DEG C
Reaction mixture, is cooled to room temperature and carries out high speed centrifugation with centrifugal precipitation mechanism by insulation reaction 30-50 minutes after stopping reaction
Precipitation, adds deionized water and disperses again, centrifugation again, obtains modified mixture；
(3) high-speed mixer is warming up to 160 DEG C, adds the modified mixture that step (2) obtains, while add deionization
250 parts of water, first stirring at low speed mix 6-8min, then high-speed stirred mixing 15-20min, when material temperature reaches 120-130 DEG C, add
Enter 3-5 parts of 3- sulfopropyl dodecyldimethylammonium hydroxide inner salts, continue to carry out after high-speed stirred reaches 140-150 DEG C to material temperature cold
But, activation modification mixture is obtained；
(4) the activation modification mixture for obtaining step (3) imports polycondensation vessel, and controlling reaction temperature is 220-230 DEG C,
Polymerisation is carried out under the conditions of high vacuum environment and strong stirring, obtains polymer；
(5) polymer for obtaining step (4) adds plastic molding machine, through compression molding, finished product.
Preferably, ultrasonic disperse is preferably that first ultrasonic disperse 1.5 is small under conditions of power 250W in the step (1)
When, then again when ultrasonic disperse 2.5 is small under the conditions of power 500W.
Preferably, the vacuum of polymerisation is -0.1MPa in the step (4), and mixing speed is 3000 revs/min.
Preferably, the molding in the step (5) is cold-pressed two steps after being divided to first hot pressing, and hot pressing temperature is 150-160 DEG C, preheating
Time is 20 minutes, pressure 120-130MPa, and the time is 10-15 minutes；Temperature of colding pressing is 30-40 DEG C, pressure 80-
100MPa, time are 10-15 minutes.
Further, the invention also discloses the composite polrvinyl chloride Plastic valve material that the preparation method obtains to
Application in drainage system.
Compared with prior art, the present invention its advantage is：
(1) preparation method of composite polrvinyl chloride Plastic valve material of the invention is used polyvinyl chloride, metering system
Ultrasound, filtering, drying after acid, epoxy resin, o-phthalic acid dibutyl ester, mica, deionized water mixing, then add peroxidating
Octanoic acid ter-butyl ester, alkyl benzene sulfonic acid ester are modified reaction, then modified mixture is added in high-speed mixer, add 3- sulphurs
Activation modification mixture, is finally polymerize, is suppressed by propyl group dodecyldimethylammonium hydroxide inner salt high-temperature activation, obtains finished product material
Material.The Plastic valve material being prepared, its ring stiffness grade is high, tensile strength and compression strength are excellent, in water supply and sewage work
In have a good application prospect.
(2) present invention employs the peroxidation acid tert-butyl ester, alkyl benzene sulfonic acid ester to have carried out effectively Plastic valve material
Modification, although in these modifying process material therefor be not first Application in Plastic valve material, according to a certain ratio
After amount combination, it is aided with corresponding modification mode, is brought to the Plastic valve material being finally prepared in performance
Increase substantially, this is never to report in conventional research, for realize the present invention technique effect play certainly
Qualitatively act on.
Embodiment
The technical solution of invention is described in detail with reference to specific embodiment.
Embodiment 1
(1) by 60 parts of polyvinyl chloride, 52 parts of methacrylic acid, 25 parts of epoxy resin, 16 parts of o-phthalic acid dibutyl ester, cloud
500 parts of 4 parts of female powder, deionized water mixing, when stirring 6 is small at 70 DEG C, ultrasonic disperse after then raising temperature to 90 DEG C, first in power
When ultrasonic disperse 1.5 is small under conditions of 250W, then spent again when ultrasonic disperse 2.5 is small under the conditions of power 500W after filtering
Ionized water washing and filtering mixture 2 times, when vacuum drying 18 is small at 85 DEG C, obtains primary mix；
(2) deionized water of 10 times of weight is added in the primary mix obtained to step (1), while it is pungent to add peroxidating
6 parts of tert-butyl acrylate, 3 parts of alkyl benzene sulfonic acid ester, pH to 5.5 is adjusted with acetic acid solution, and it is anti-that solution system is heated to 80 DEG C of insulations
Answer 30 minutes, reaction mixture is cooled to room temperature after stopping reaction and carries out high speed centrifugation precipitation with centrifugal precipitation mechanism, add
Deionized water is disperseed again, again centrifugation, obtains modified mixture；
(3) high-speed mixer is warming up to 160 DEG C, adds the modified mixture that step (2) obtains, while add deionization
250 parts of water, first stirring at low speed mix 6min, then high-speed stirred mixing 15min, when material temperature reaches 120 DEG C, add 3- sulfopropyls
3 parts of dodecyldimethylammonium hydroxide inner salt, continues to be cooled down after high-speed stirred to material temperature reaches 140 DEG C, obtains activation modification and mix
Compound；
(4) the activation modification mixture for obtaining step (3) imports polycondensation vessel, and controlling reaction temperature is 220 DEG C, in Gao Zhen
Carry out polymerisation under the conditions of Altitude and strong stirring, the vacuum of polymerisation is -0.1MPa, mixing speed 3000
Rev/min, obtain polymer；
(5) polymer for obtaining step (4) adds plastic molding machine, carries out compression molding, cold after the first hot pressing of molding point
Two steps are pressed, hot pressing temperature is 150 DEG C, and preheating time is 20 minutes, pressure 120MPa, and the time is 10 minutes；Temperature of colding pressing is
30 DEG C, pressure 80MPa, the time is 10 minutes, finished product after the completion of molding.
The performance test results of obtained composite polrvinyl chloride Plastic valve material are as shown in table 1.
Embodiment 2
(1) by 63 parts of polyvinyl chloride, 55 parts of methacrylic acid, 30 parts of epoxy resin, 18 parts of o-phthalic acid dibutyl ester, cloud
500 parts of 5 parts of female powder, deionized water mixing, when stirring 7 is small at 70 DEG C, ultrasonic disperse after then raising temperature to 90 DEG C, first in power
When ultrasonic disperse 1.5 is small under conditions of 250W, then spent again when ultrasonic disperse 2.5 is small under the conditions of power 500W after filtering
Ionized water washing and filtering mixture 2 times, when vacuum drying 20 is small at 85 DEG C, obtains primary mix；
(2) deionized water of 10 times of weight is added in the primary mix obtained to step (1), while it is pungent to add peroxidating
7 parts of tert-butyl acrylate, 4 parts of alkyl benzene sulfonic acid ester, pH to 5.5 is adjusted with acetic acid solution, and it is anti-that solution system is heated to 85 DEG C of insulations
Answer 40 minutes, reaction mixture is cooled to room temperature after stopping reaction and carries out high speed centrifugation precipitation with centrifugal precipitation mechanism, add
Deionized water is disperseed again, again centrifugation, obtains modified mixture；
(3) high-speed mixer is warming up to 160 DEG C, adds the modified mixture that step (2) obtains, while add deionization
250 parts of water, first stirring at low speed mix 7min, then high-speed stirred mixing 18min, when material temperature reaches 125 DEG C, add 3- sulfopropyls
4 parts of dodecyldimethylammonium hydroxide inner salt, continues to be cooled down after high-speed stirred to material temperature reaches 145 DEG C, obtains activation modification and mix
Compound；
(4) the activation modification mixture for obtaining step (3) imports polycondensation vessel, and controlling reaction temperature is 225 DEG C, in Gao Zhen
Carry out polymerisation under the conditions of Altitude and strong stirring, the vacuum of polymerisation is -0.1MPa, mixing speed 3000
Rev/min, obtain polymer；
(5) polymer for obtaining step (4) adds plastic molding machine, carries out compression molding, cold after the first hot pressing of molding point
Two steps are pressed, hot pressing temperature is 155 DEG C, and preheating time is 20 minutes, pressure 125MPa, and the time is 12 minutes；Temperature of colding pressing is
35 DEG C, pressure 90MPa, the time is 12 minutes, finished product after the completion of molding.
The performance test results of obtained composite polrvinyl chloride Plastic valve material are as shown in table 1.
Embodiment 3
(1) by 66 parts of polyvinyl chloride, 58 parts of methacrylic acid, 35 parts of epoxy resin, 20 parts of o-phthalic acid dibutyl ester, cloud
500 parts of 6 parts of female powder, deionized water mixing, when stirring 8 is small at 70 DEG C, ultrasonic disperse after then raising temperature to 90 DEG C, first in power
When ultrasonic disperse 1.5 is small under conditions of 250W, then spent again when ultrasonic disperse 2.5 is small under the conditions of power 500W after filtering
Ionized water washing and filtering mixture 2 times, when vacuum drying 22 is small at 85 DEG C, obtains primary mix；
(2) deionized water of 10 times of weight is added in the primary mix obtained to step (1), while it is pungent to add peroxidating
8 parts of tert-butyl acrylate, 5 parts of alkyl benzene sulfonic acid ester, pH to 5.5 is adjusted with acetic acid solution, and it is anti-that solution system is heated to 90 DEG C of insulations
Answer 50 minutes, reaction mixture is cooled to room temperature after stopping reaction and carries out high speed centrifugation precipitation with centrifugal precipitation mechanism, add
Deionized water is disperseed again, again centrifugation, obtains modified mixture；
(3) high-speed mixer is warming up to 160 DEG C, adds the modified mixture that step (2) obtains, while add deionization
250 parts of water, first stirring at low speed mix 8min, then high-speed stirred mixing 20min, when material temperature reaches 130 DEG C, add 3- sulfopropyls
5 parts of dodecyldimethylammonium hydroxide inner salt, continues to be cooled down after high-speed stirred to material temperature reaches 150 DEG C, obtains activation modification and mix
Compound；
(4) the activation modification mixture for obtaining step (3) imports polycondensation vessel, and controlling reaction temperature is 230 DEG C, in Gao Zhen
Carry out polymerisation under the conditions of Altitude and strong stirring, the vacuum of polymerisation is -0.1MPa, mixing speed 3000
Rev/min, obtain polymer；
(5) polymer for obtaining step (4) adds plastic molding machine, carries out compression molding, cold after the first hot pressing of molding point
Two steps are pressed, hot pressing temperature is 160 DEG C, and preheating time is 20 minutes, pressure 130MPa, and the time is 15 minutes；Temperature of colding pressing is
40 DEG C, pressure 100MPa, the time is 15 minutes, finished product after the completion of molding.
The performance test results of obtained composite polrvinyl chloride Plastic valve material are as shown in table 1.
Comparative example 1
(1) by 63 parts of polyvinyl chloride, 55 parts of methacrylic acid, 30 parts of epoxy resin, 18 parts of o-phthalic acid dibutyl ester, cloud
500 parts of 5 parts of female powder, deionized water mixing, when stirring 7 is small at 70 DEG C, ultrasonic disperse after then raising temperature to 90 DEG C, first in power
When ultrasonic disperse 1.5 is small under conditions of 250W, then spent again when ultrasonic disperse 2.5 is small under the conditions of power 500W after filtering
Ionized water washing and filtering mixture 2 times, when vacuum drying 20 is small at 85 DEG C, obtains primary mix；
(2) deionized water of 10 times of weight is added in the primary mix obtained to step (1), while adds benzene sulfonamide
4 parts of acid esters, pH to 5.5 is adjusted with acetic acid solution, and solution system is heated to 85 DEG C of insulation reactions 40 minutes, and stopping will after reaction
Reaction mixture is cooled to room temperature and carries out high speed centrifugation precipitation with centrifugal precipitation mechanism, adds deionized water and disperses again, again
Centrifugation, obtains modified mixture；
(3) high-speed mixer is warming up to 160 DEG C, adds the modified mixture that step (2) obtains, while add deionization
250 parts of water, first stirring at low speed mix 7min, then high-speed stirred mixing 18min, when material temperature reaches 125 DEG C, add 3- sulfopropyls
4 parts of dodecyldimethylammonium hydroxide inner salt, continues to be cooled down after high-speed stirred to material temperature reaches 145 DEG C, obtains activation modification and mix
Compound；
(4) the activation modification mixture for obtaining step (3) imports polycondensation vessel, and controlling reaction temperature is 225 DEG C, in Gao Zhen
Carry out polymerisation under the conditions of Altitude and strong stirring, the vacuum of polymerisation is -0.1MPa, mixing speed 3000
Rev/min, obtain polymer；
(5) polymer for obtaining step (4) adds plastic molding machine, carries out compression molding, cold after the first hot pressing of molding point
Two steps are pressed, hot pressing temperature is 155 DEG C, and preheating time is 20 minutes, pressure 125MPa, and the time is 12 minutes；Temperature of colding pressing is
35 DEG C, pressure 90MPa, the time is 12 minutes, finished product after the completion of molding.
The performance test results of obtained Plastic valve material are as shown in table 1.
Comparative example 2
(1) by 63 parts of polyvinyl chloride, 55 parts of methacrylic acid, 30 parts of epoxy resin, 18 parts of o-phthalic acid dibutyl ester, cloud
500 parts of 5 parts of female powder, deionized water mixing, when stirring 7 is small at 70 DEG C, ultrasonic disperse after then raising temperature to 90 DEG C, first in power
When ultrasonic disperse 1.5 is small under conditions of 250W, then spent again when ultrasonic disperse 2.5 is small under the conditions of power 500W after filtering
Ionized water washing and filtering mixture 2 times, when vacuum drying 20 is small at 85 DEG C, obtains primary mix；
(2) deionized water of 10 times of weight is added in the primary mix obtained to step (1), while it is pungent to add peroxidating
7 parts of tert-butyl acrylate, pH to 5.5 is adjusted with acetic acid solution, and solution system is heated to 85 DEG C of insulation reactions 40 minutes, stops reaction
Reaction mixture is cooled to room temperature afterwards and carries out high speed centrifugation precipitation with centrifugal precipitation mechanism, deionized water is added and disperses again,
Centrifugation again, obtains modified mixture；
(3) high-speed mixer is warming up to 160 DEG C, adds the modified mixture that step (2) obtains, while add deionization
250 parts of water, first stirring at low speed mix 7min, then high-speed stirred mixing 18min, when material temperature reaches 125 DEG C, add 3- sulfopropyls
4 parts of dodecyldimethylammonium hydroxide inner salt, continues to be cooled down after high-speed stirred to material temperature reaches 145 DEG C, obtains activation modification and mix
Compound；
(4) the activation modification mixture for obtaining step (3) imports polycondensation vessel, and controlling reaction temperature is 225 DEG C, in Gao Zhen
Carry out polymerisation under the conditions of Altitude and strong stirring, the vacuum of polymerisation is -0.1MPa, mixing speed 3000
Rev/min, obtain polymer；
(5) polymer for obtaining step (4) adds plastic molding machine, carries out compression molding, cold after the first hot pressing of molding point
Two steps are pressed, hot pressing temperature is 155 DEG C, and preheating time is 20 minutes, pressure 125MPa, and the time is 12 minutes；Temperature of colding pressing is
35 DEG C, pressure 90MPa, the time is 12 minutes, finished product after the completion of molding.
The performance test results of obtained Plastic valve material are as shown in table 1.
Comparative example 3
(1) by 63 parts of polyvinyl chloride, 55 parts of methacrylic acid, 30 parts of epoxy resin, 18 parts of o-phthalic acid dibutyl ester, cloud
500 parts of 5 parts of female powder, deionized water mixing, when stirring 7 is small at 70 DEG C, ultrasonic disperse after then raising temperature to 90 DEG C, first in power
When ultrasonic disperse 1.5 is small under conditions of 250W, then spent again when ultrasonic disperse 2.5 is small under the conditions of power 500W after filtering
Ionized water washing and filtering mixture 2 times, when vacuum drying 20 is small at 85 DEG C, obtains primary mix；
(2) deionized water of 10 times of weight is added in the primary mix obtained to step (1), pH is adjusted with acetic acid solution
To 5.5, solution system is heated to 85 DEG C of insulation reactions 40 minutes, stops being cooled to room temperature reaction mixture after reaction being used in combination
Centrifugal precipitation mechanism carries out high speed centrifugation precipitation, adds deionized water and disperses again, centrifugation again, obtains modified mixture；
(3) high-speed mixer is warming up to 160 DEG C, adds the modified mixture that step (2) obtains, while add deionization
250 parts of water, first stirring at low speed mix 7min, then high-speed stirred mixing 18min, when material temperature reaches 125 DEG C, add 3- sulfopropyls
4 parts of dodecyldimethylammonium hydroxide inner salt, continues to be cooled down after high-speed stirred to material temperature reaches 145 DEG C, obtains activation modification and mix
Compound；
(4) the activation modification mixture for obtaining step (3) imports polycondensation vessel, and controlling reaction temperature is 225 DEG C, in Gao Zhen
Carry out polymerisation under the conditions of Altitude and strong stirring, the vacuum of polymerisation is -0.1MPa, mixing speed 3000
Rev/min, obtain polymer；
(5) polymer for obtaining step (4) adds plastic molding machine, carries out compression molding, cold after the first hot pressing of molding point
Two steps are pressed, hot pressing temperature is 155 DEG C, and preheating time is 20 minutes, pressure 125MPa, and the time is 12 minutes；Temperature of colding pressing is
35 DEG C, pressure 90MPa, the time is 12 minutes, finished product after the completion of molding.
The performance test results of obtained Plastic valve material are as shown in table 1.
The obtained Plastic valve material of embodiment 1-3 and comparative example 1-3 is subjected to ring stiffness grade, tensile strength respectively
With this several performance tests of compression strength.
Table 1
The preparation method of the Plastic valve material of the present invention is used polyvinyl chloride, methacrylic acid, epoxy resin, adjacent benzene
Ultrasound, filtering, drying after dioctyl phthalate dibutyl ester, mica, deionized water mixing, then add the peroxidation acid tert-butyl ester, alkyl
Benzene sulfonate is modified reaction, then modified mixture is added in high-speed mixer, addition 3- sulfopropyls dodecyl two
Activation modification mixture, is finally polymerize, is suppressed, obtain finished-product material by methyl betaine high-temperature activation.It is prepared
Plastic valve material, its ring stiffness grade is high, tensile strength and compression strength are excellent, has good answer in water supply and sewage work
Use prospect.Also, present invention employs the peroxidation acid tert-butyl ester, alkyl benzene sulfonic acid ester to have carried out effectively Plastic valve material
Modification, although in these modifying process material therefor be not first Application in Plastic valve material, according to a certain ratio
After amount combination, it is aided with corresponding modification mode, is brought to the Plastic valve material being finally prepared in performance
Increase substantially, this is never to report in conventional research, for realize the present invention technique effect play certainly
Qualitatively act on.
The foregoing is merely the embodiment of the present invention, is not intended to limit the scope of the invention, every to utilize this hair
The equivalent structure or equivalent flow shift that bright description is made, is directly or indirectly used in other relevant technology necks
Domain, is included within the scope of the present invention.
Claims (5)
1. a kind of preparation method of composite polrvinyl chloride Plastic valve material, it is characterised in that comprise the following steps：
(1) by 60-66 parts of polyvinyl chloride, 52-58 parts of methacrylic acid, 25-35 parts of epoxy resin, o-phthalic acid dibutyl ester
16-20 parts, 4-6 parts of mica powder, the mixing of 500 parts of deionized water, stirred at 70 DEG C 6-8 it is small when, surpass after then raising temperature to 90 DEG C
Sound disperses, and filtering mixture is washed with deionized after filtering 2 times, when vacuum drying 18-22 is small at 85 DEG C, obtains primary mixing
Thing；
(2) deionized water of 10 times of weight is added in the primary mix obtained to step (1), while adds peroxidation acid uncle
6-8 parts of butyl ester, 3-5 parts of alkyl benzene sulfonic acid ester, pH to 5.5 is adjusted with acetic acid solution, and solution system is heated to 80-90 DEG C of insulation
Reaction mixture, is cooled to room temperature and carries out high speed centrifugation precipitation with centrifugal precipitation mechanism by reaction 30-50 minutes after stopping reaction,
Add deionized water again to disperse, centrifugation again, obtains modified mixture；
(3) high-speed mixer is warming up to 160 DEG C, adds the modified mixture that step (2) obtains, while add deionized water
250 parts, first stirring at low speed mixes 6-8min, then high-speed stirred mixing 15-20min, when material temperature reaches 120-130 DEG C, adds
3-5 parts of 3- sulfopropyl dodecyldimethylammonium hydroxide inner salts, continue to be cooled down after high-speed stirred reaches 140-150 DEG C to material temperature,
Obtain activation modification mixture；
(4) the activation modification mixture for obtaining step (3) imports polycondensation vessel, and controlling reaction temperature is 220-230 DEG C, in Gao Zhen
Polymerisation is carried out under the conditions of Altitude and strong stirring, obtains polymer；
(5) polymer for obtaining step (4) adds plastic molding machine, through compression molding, finished product.
2. the preparation method of composite polrvinyl chloride Plastic valve material according to claim 1, it is characterised in that the step
Suddenly ultrasonic disperse is preferably first when ultrasonic disperse 1.5 is small under conditions of power 250W, then again in power 500W conditions in (1)
When lower ultrasonic disperse 2.5 is small.
3. the preparation method of composite polrvinyl chloride Plastic valve material according to claim 1, it is characterised in that the step
Suddenly the vacuum of polymerisation is -0.1MPa in (4), and mixing speed is 3000 revs/min.
4. the preparation method of composite polrvinyl chloride Plastic valve material according to claim 1, it is characterised in that the step
Suddenly the molding in (5) is cold-pressed two steps after being divided to first hot pressing, and hot pressing temperature is 150-160 DEG C, and preheating time is 20 minutes, and pressure is
120-130MPa, time are 10-15 minutes；Temperature of colding pressing is 30-40 DEG C, pressure 80-100MPa, and the time is 10-15 minutes.
5. the composite polrvinyl chloride Plastic valve material obtained according to claim 1-4 any one of them preparation methods is in discharge
Application in Hydraulic Projects.
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| CN201711318777.2A CN107955312A (en) | 2017-12-12 | 2017-12-12 | A kind of preparation method and application of composite polrvinyl chloride Plastic valve material |
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| CN201711318777.2A CN107955312A (en) | 2017-12-12 | 2017-12-12 | A kind of preparation method and application of composite polrvinyl chloride Plastic valve material |
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| CN201711318777.2A Withdrawn CN107955312A (en) | 2017-12-12 | 2017-12-12 | A kind of preparation method and application of composite polrvinyl chloride Plastic valve material |
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| Country | Link |
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| CN (1) | CN107955312A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010280103A (en) * | 2009-06-03 | 2010-12-16 | Daikin Ind Ltd | Laminate, molding, fuel hose and method for manufacturing the laminate |
| CN103195983A (en) * | 2013-04-17 | 2013-07-10 | 孔少云 | Polyvinyl chloride ribbed glass-reinforced-plastic-reinforced composite tube and preparation method thereof |
| CN105037925A (en) * | 2015-06-17 | 2015-11-11 | 黄惠娟 | Composite plastic pipe |
-
2017
- 2017-12-12 CN CN201711318777.2A patent/CN107955312A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010280103A (en) * | 2009-06-03 | 2010-12-16 | Daikin Ind Ltd | Laminate, molding, fuel hose and method for manufacturing the laminate |
| CN103195983A (en) * | 2013-04-17 | 2013-07-10 | 孔少云 | Polyvinyl chloride ribbed glass-reinforced-plastic-reinforced composite tube and preparation method thereof |
| CN105037925A (en) * | 2015-06-17 | 2015-11-11 | 黄惠娟 | Composite plastic pipe |
Non-Patent Citations (2)
| Title |
|---|
| 李国能: "《塑料模压成型技术问答》", 30 June 2012, 印刷工业出版社 * |
| 温变英: "《高分子材料加工 （第二版）》", 30 June 2016, 中国轻工业出版社 * |
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