CN106832663B - graphene-PVC composite slurry and preparation method and application thereof - Google Patents
graphene-PVC composite slurry and preparation method and application thereof Download PDFInfo
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D19/00—Gloves
- A41D19/0055—Plastic or rubber gloves
- A41D19/0058—Three-dimensional gloves
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- 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
- B29C41/00—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor
- B29C41/02—Shaping by coating a mould, core or other substrate, i.e. by depositing material and stripping-off the shaped article; Apparatus therefor for making articles of definite length, i.e. discrete articles
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/06—Pretreated ingredients and ingredients covered by the main groups C08K3/00 - C08K7/00
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
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- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/10—Esters; Ether-esters
- C08K5/12—Esters; Ether-esters of cyclic polycarboxylic acids
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- 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
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/17—Amines; Quaternary ammonium compounds
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- 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
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/48—Wearing apparel
- B29L2031/4842—Outerwear
- B29L2031/4864—Gloves
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- 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
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- 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
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids
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Abstract
The invention provides graphene-PVC composite slurry and a preparation method and application thereof, wherein the graphene-PVC composite slurry comprises PVC paste powder, graphene and a plasticizer; the weight ratio of the PVC paste powder to the graphene is 100 (0.025-5); the weight ratio of the PVC paste powder to the plasticizer is 1: 0.9-1. The PVC gloves prepared from the composite slurry have excellent antibacterial effect, meet the international standard IS022196 and the American standard AATCC100, and have the antibacterial rate of over 99 percent; and the conventional performances of gloves such as high wear resistance, tear resistance and the like, and high chemical resistance such as methanol permeation resistance, sodium hydroxide permeation resistance and sulfuric acid permeation resistance are maintained.
Description
Technical Field
The invention relates to graphene-PVC composite slurry and a preparation method and application thereof.
Background
The polyvinyl chloride paste resin has a fine particle size, is like talc in texture, and has no flowability. Polyvinyl chloride paste resins are mixed with plasticizers and stirred to form a stable suspension, i.e. to form a PVC paste, or PVC plastisol, PVC sol, and are used in this form for processing into finished products. During the paste making process, various fillers, diluents, heat stabilizers, foaming agents, light stabilizers and the like are added according to different product requirements.
The PVC gloves are made by adopting the PVC plastification paste and a special process. The disposable PVC gloves have the advantages that the disposable PVC gloves are mainly used in the market, have good flexibility and touch feeling, are convenient and comfortable to wear, and can be used in a dust-free environment. However, the PVC gloves used for industrial protection in the market are not of a plurality of varieties, and the PVC gloves have the problems of easy degradation, color change, overhigh viscosity and the like.
The graphene is a two-dimensional nano material, the crystal lattice of the graphene is a hexagon consisting of six carbon atoms, the thickness of the graphene is one atomic layer, the carbon atoms are connected by s bonds in an sp bonding mode2And through hybridization, the s bonds endow graphene with extremely excellent mechanical properties and structural rigidity, and the strength of the graphene is 100 times stronger than that of the best steel. The graphene has high conductivity, and the electron mobility of the graphene exceeds 15000cm at normal temperature2V.s; the heat conductivity coefficient is as high as 5300W/m.K, which is higher than that of carbon nano tube and diamond, and the graphene also has the functions of antibiosis, flame retardance, radiation resistance and the like. However, no report on the application of graphene to PVC gloves is found.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides graphene-PVC composite slurry and a preparation method and application thereof.
The purpose of the invention is realized by the following technical scheme:
the invention relates to graphene-PVC composite slurry, which comprises PVC paste powder, graphene and a plasticizer; the weight ratio of the PVC paste powder to the graphene is 100 (0.025-5); the weight ratio of the PVC paste powder to the plasticizer is 1: 0.9-1.
Preferably, the composite slurry also comprises a synergist, and the weight ratio of the synergist to the PVC paste powder is (0.01-0.2): 100; the synergist is one or a mixture of glyceryl monostearate, oleic acid, oleylamine, polyoxyethylene, Span, Tween or ethanolamine.
Preferably, the composite slurry further comprises a solvent, and the solvent is at least one of dichloroethane and tetrahydrofuran.
Preferably, the PVC paste powder comprises the following components in percentage by mass: 85-95% of PVC paste resin and 5-15% of calcium carbonate;
preferably, the plasticizer is one or more of cyclohexane 1, 2-dicarboxylic acid diisononyl ester, tri-n-butyl citrate, and dioctyl terephthalate.
Preferably, the type of the graphene is selected from one or more of graphene prepared by a chemical vapor deposition method, carbon dioxide supercritical expansion exfoliated graphene, chemical oxidation exfoliated graphene oxide, coupling agent modified graphene oxide, amino polymer modified graphene oxide, cationic surfactant modified graphene oxide, bromododecane modified graphene oxide, bromohexadecane modified graphene oxide, bromooctadecane modified graphene oxide, reduced graphene oxide obtained by high-temperature thermal expansion, reduced graphene oxide obtained by low-temperature thermal expansion, graphene obtained by electrochemical exfoliation, modified electrochemical exfoliated graphene, mechanical ball milling exfoliated graphene and three-roll grinding mechanical exfoliated graphene.
Preferably, the composite paste also comprises a calcium zinc stabilizer, and the weight ratio of the calcium zinc stabilizer to the PVC paste powder is (0.5-2): 100.
The invention also relates to a preparation method of the graphene-PVC composite slurry, which comprises the following steps:
mixing the graphene with PVC paste powder, a plasticizer, a synergist and a calcium-zinc stabilizer, fully stirring, and standing after uniformly mixing;
or mixing the PVC paste powder with a plasticizer, a synergist and a calcium-zinc stabilizer to form a first mixture, mixing the graphene with a solvent to form a second mixture, finally mixing the first mixture and the second mixture, fully stirring, uniformly mixing and standing.
Preferably, in the step A3, the stirring time is 45-60 minutes, the stirring temperature is 30-35 ℃, and the mixture is placed for 12-16 hours.
The invention also relates to application of the graphene-PVC composite slurry in preparation of PVC gloves.
The invention also relates to a preparation method of the PVC gloves, which comprises the following steps:
A. taking the graphene-PVC composite slurry to form a first slurry for slurry rolling and a first slurry spraying process; taking the graphene-PVC composite slurry, adding a plasticizer, wherein the weight part ratio of the graphene-PVC composite slurry to the plasticizer is (190-210) to (10-30), and uniformly stirring to form a second slurry for a second slurry spraying process;
B. the PVC gloves are prepared by the processes of glove covering, singeing, first slurry rolling, first slurry spraying, first drying, first cooling, second slurry rolling, second slurry spraying, second drying, second cooling and glove removing in sequence.
Preferably, in the step A, the temperature of the first slurry and the temperature of the second slurry are 18-50 ℃, the viscosity of the first slurry is controlled to be 3000-4000 mPa.s, and the viscosity of the second slurry is controlled to be 1000-2000 mPa.s; in the step B, the mold temperature of a hand touch in the glove covering process is controlled to be 55-65 ℃, the first slurry rolling time and the second slurry rolling time are respectively 15-20 seconds independently, the first slurry spraying time and the second slurry spraying time are respectively 10-15 minutes independently, the first drying temperature is 100-120 ℃, the first drying time is 6-8 minutes, the second drying temperature is 180-220 ℃, and the second drying time is 10-20 minutes.
Preferably, the preparation method further comprises the procedures of sand soaking and third drying after the second drying; the sand leaching process adopts a mixed solution of PVC particles with the leaching degree of 1000, a plasticizer and PVC paste powder; the proportions of the mixed liquid of the PVC particles with the polymerization degree of 1000, the plasticizer and the PVC paste powder are respectively (50-70): 100: (5-15); the plasticizer is one or more of cyclohexane 1, 2-diisononyl phthalate, tri-n-butyl citrate and dioctyl terephthalate.
Preferably, the temperature of the third drying is 180-220 ℃, and the drying time is 10-20 minutes.
Preferably, the first slurry and the second slurry need to be subjected to vacuum defoaming for 35-50 minutes before use.
Compared with the prior art, the invention has the following beneficial effects:
1) the product has excellent antibacterial effect, meets the international standard IS022196 and the American standard AATCC100, and has an antibacterial rate of over 99 percent.
2) The PVC gloves prepared from the graphene-PVC composite slurry have the conventional glove performances of high wear resistance, tear resistance and the like, and also have three chemical resistance performances of methanol permeation resistance, sodium hydroxide permeation resistance and sulfuric acid permeation resistance.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
Example 1
The embodiment provides a graphene-PVC composite slurry and a preparation method thereof, wherein the composition and the parts by weight of the graphene-PVC composite slurry are shown in Table 1.
The preparation method of the graphene-PVC composite slurry comprises the steps of mixing graphene with PVC paste powder, a plasticizer, a synergist and a calcium-zinc stabilizer, fully stirring, uniformly mixing and then placing.
And stirring for 55 minutes at the stirring temperature of 30 ℃, uniformly mixing, and standing for 12 hours to obtain the graphene-PVC composite slurry.
Preparing the PVC gloves by using the graphene-PVC composite slurry, which comprises the following steps:
A. the graphene-PVC composite slurry prepared by the method is used as a first slurry for slurry rolling and a first slurry spraying process; adding 20 parts by weight of plasticizer (30% of cyclohexane 1, 2-diisononyl phthalate and 70% of tri-n-butyl citrate TBC) into the graphene-PVC composite slurry (200 parts by weight) prepared by the method, and uniformly stirring to obtain a second slurry for a second slurry spraying process; and carrying out vacuum defoaming on the first slurry and the second slurry for 35 minutes before use.
B. The PVC gloves are prepared by the processes of glove covering, singeing, first slurry rolling, first slurry spraying, first drying, first cooling, second slurry rolling, second slurry spraying, second drying, second cooling and glove removing in sequence.
In the step A, the temperature of the first slurry and the second slurry is 24 ℃, the viscosity of the first slurry is 3500mPa.s, and the viscosity of the second slurry is 1600 mPa.s; in the glove sleeving procedure in the step B, the temperature of a hand mold is controlled to be 55 ℃; the first slurry rolling time and the second slurry rolling time are both 20 seconds independently, and the first slurry spraying time and the second slurry spraying time are both 10 minutes; the temperature of the first drying is 100 ℃, and the drying time is 8 minutes; the temperature of the second drying is 180 ℃, and the drying time is 20 minutes.
Example 2
The embodiment provides graphene-PVC composite slurry and a preparation method thereof, wherein the composition and the parts by weight of the graphene-PVC composite slurry are shown in Table 1.
The preparation method of the graphene-PVC composite slurry comprises the steps of mixing PVC paste powder with a plasticizer, a synergist and a calcium-zinc stabilizer to form a first mixture, mixing graphene with a solvent to form a second mixture, finally mixing the first mixture with the second mixture, fully stirring, uniformly mixing and then placing. And stirring for 45 minutes at the stirring temperature of 30 ℃, uniformly mixing, and standing for 14 hours to obtain the graphene-PVC composite slurry.
The preparation method of the PVC gloves by using the graphene-PVC composite slurry comprises the following specific steps:
A. taking the graphene-PVC composite slurry as a first slurry for slurry rolling and first slurry spraying procedures; adding 15 parts by weight of plasticizer (20% cyclohexane 1, 2-diisononyl phthalate and 80% dioctyl terephthalate DOTP) into the graphene-PVC composite slurry (190 parts by weight), and uniformly stirring to obtain a second slurry for a second slurry pouring process; and carrying out vacuum defoaming on the first slurry and the second slurry for 35 minutes before use.
B. The PVC gloves are prepared by sequentially carrying out glove covering, singeing, first slurry rolling, first slurry spraying, first drying, first cooling, second slurry rolling, second slurry spraying, second drying, second cooling and glove removing.
In the step A, the temperature of the first slurry and the second slurry is 18 ℃, the viscosity of the first slurry is 4000mPa.s, and the viscosity of the second slurry is 2000 mPa.s; c, controlling the temperature of a hand mould to be 65 ℃ in the glove sleeving procedure in the step B; the first slurry rolling time and the second slurry rolling time are both 20 seconds independently, and the first slurry spraying time and the second slurry spraying time are both 15 minutes; the temperature of the first drying is 120 ℃, and the drying time is 6 minutes; the temperature of the second drying is 220 ℃, and the drying time is 10 minutes.
Example 3
The embodiment provides graphene-PVC composite slurry and a preparation method thereof, wherein the composition and the parts by weight of the graphene-PVC composite slurry are shown in Table 1.
The preparation method of the graphene-PVC composite slurry comprises the steps of mixing graphene with PVC paste powder, a plasticizer, a synergist and a calcium-zinc stabilizer, fully stirring, uniformly mixing and then placing. And the stirring temperature is 35 ℃, the stirring is carried out for 60 minutes, the mixture is uniformly mixed and then is placed for 16 hours, and the graphene-PVC composite slurry is obtained.
The preparation method of the PVC gloves by using the graphene-PVC composite slurry comprises the following specific steps:
A. taking the graphene-PVC composite slurry as a first slurry for slurry rolling and first slurry spraying procedures; adding 30 parts by weight of plasticizer (40% cyclohexane 1, 2-diisononyl phthalate and 60% dioctyl terephthalate DOTP) into the graphene-PVC composite slurry (210 parts by weight), and uniformly stirring to obtain a second slurry for a second slurry pouring process; and carrying out vacuum defoaming on the first slurry and the second slurry for 35 minutes before use.
B. The gloves are removed through the processes of glove covering, singeing, first slurry rolling, first slurry spraying, first drying, first cooling, second slurry rolling, second slurry spraying, second drying, second cooling and glove removing in sequence.
In the step A, the temperature of the first slurry and the second slurry is 40 ℃, the viscosity of the first slurry is 3000mPa.s, and the viscosity of the second slurry is 1000 mPa.s; c, controlling the temperature of a hand mould to be 60 ℃ in the glove sleeving procedure in the step B; the first slurry rolling time and the second slurry rolling time are both 18 seconds independently, and the first slurry spraying time and the second slurry spraying time are both 12 minutes; the temperature of the first drying is 110 ℃, and the drying time is 7 minutes; the temperature of the second drying is 200 ℃, and the drying time is 15 minutes.
Example 4
The embodiment provides graphene-PVC composite slurry and a preparation method thereof, wherein the composition and the parts by weight of the graphene-PVC composite slurry are shown in Table 1.
The preparation method of the graphene-PVC composite slurry comprises the steps of mixing PVC paste powder with a plasticizer, a synergist and a calcium-zinc stabilizer to form a first mixture, mixing graphene with a solvent to form a second mixed solution, finally mixing the first mixture with the second mixture, fully stirring, uniformly mixing and then placing. And the stirring temperature is 35 ℃, the stirring is carried out for 50 minutes, and the mixture is uniformly mixed and then placed for 12 hours, so that the graphene-PVC composite slurry is obtained.
The specific steps of preparing the graphene-PVC composite slurry into the PVC gloves are the same as those of example 1.
Comparative example 1
The present comparative example provides a graphene-PVC composite slurry and a method for preparing the same, the components and the method for preparing the same are substantially the same as those of example 2, except that: the present comparative example does not contain graphene.
The PVC gloves prepared from the PVC slurry are prepared by the same specific steps as in example 2.
Comparative example2
The present comparative example provides a graphene-PVC composite slurry and a method for preparing the same, the components and the method for preparing the same are substantially the same as those of example 2, except that: this comparative example contained no synergist.
The PVC gloves prepared from the PVC slurry are prepared by the same specific steps as in example 2.
Comparative example 3
The present comparative example provides a graphene-PVC composite slurry and a method for preparing the same, the components and the method for preparing the same are substantially the same as those of example 2, except that: the weight portion of the synergist in this comparative example is 0.3 portion.
The PVC gloves prepared from the PVC slurry are prepared by the same specific steps as in example 2.
Comparative example 4
The present comparative example provides a graphene-PVC composite slurry and a method for preparing the same, the components and the method for preparing the same are substantially the same as those of example 2, except that: the comparative example contained no calcium zinc stabilizer.
The PVC gloves are prepared from the PVC slurry, and the specific steps are the same as those in example 2.
TABLE 1
Performance test
The performance of the PVC glove products obtained in the above examples and comparative examples was tested using a liner with a cotton interlock blank, and the results are shown in table 2:
table 2 performance test of PVC gloves prepared from graphene-PVC composite slurry
The invention has many applications, and the above description is only a preferred embodiment of the invention. It should be noted that the above examples are only for illustrating the present invention, and are not intended to limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications can be made without departing from the spirit of the invention, and these modifications should be construed as within the scope of the invention.
Claims (10)
1. The graphene-PVC composite slurry is characterized by comprising PVC paste powder, graphene and a plasticizer; the weight ratio of the PVC paste powder to the graphene is 100 (0.025-5); the weight ratio of the PVC paste powder to the plasticizer is 1: 0.9-1;
the composite slurry also comprises a synergist, and the weight ratio of the synergist to the PVC paste powder is (0.01-0.2): 100; the synergist is one or a mixture of more of polyoxyethylene, Tween or ethanolamine;
the composite slurry also comprises a solvent, wherein the solvent is at least one of dichloroethane and tetrahydrofuran;
the PVC paste powder comprises the following components in percentage by mass: 85-95% of PVC paste resin and 5-15% of calcium carbonate;
the plasticizer is one or more of cyclohexane 1, 2-diisononyl phthalate, tri-n-butyl citrate and dioctyl terephthalate;
the composite slurry also comprises a calcium zinc stabilizer, and the weight ratio of the calcium zinc stabilizer to the PVC paste powder is (0.5-2): 100.
2. The graphene-PVC composite slurry according to claim 1, wherein the type of the graphene is selected from one or more of chemical vapor deposition method-prepared graphene, carbon dioxide supercritical expansion exfoliated graphene, chemical oxidation exfoliated graphene oxide, coupling agent modified graphene oxide, amino polymer modified graphene oxide, cationic surfactant modified graphene oxide, bromododecane modified graphene oxide, bromohexadecane modified graphene oxide, bromooctadecane modified graphene oxide, reduced graphene oxide obtained by high temperature thermal expansion, reduced graphene oxide obtained by low temperature thermal expansion, graphene obtained by electrochemical exfoliation, modified ball-milled electrochemical exfoliated graphene, mechanical exfoliated graphene, and three-roll milling mechanical exfoliated graphene.
3. A preparation method of the graphene-PVC composite paste according to any one of claims 1 to 2, wherein the method comprises the following steps:
mixing the graphene with PVC paste powder, a plasticizer, a synergist and a calcium-zinc stabilizer, fully stirring, and standing after uniformly mixing;
or mixing the PVC paste powder with a plasticizer, a synergist and a calcium-zinc stabilizer to form a first mixture, mixing the graphene with a solvent to form a second mixture, finally mixing the first mixture and the second mixture, fully stirring, uniformly mixing and standing.
4. The preparation method of the graphene-PVC composite slurry according to claim 3, wherein in the step A3, the stirring time is 45-60 minutes, the stirring temperature is 30-35 ℃, and the mixture is placed for 12-16 hours.
5. Use of the graphene-PVC composite paste according to any one of claims 1 to 2 in the preparation of PVC gloves.
6. A preparation method of PVC gloves is characterized by comprising the following steps:
A. taking the graphene-PVC composite slurry as defined in any one of claims 1-2 to form a first slurry for a first slurry rolling and first slurry pouring process; taking the graphene-PVC composite slurry as defined in any one of claims 1 to 5, adding a plasticizer, wherein the weight part ratio of the graphene-PVC composite slurry to the plasticizer is (190-210) to (10-30), and uniformly stirring to form a second slurry for a second slurry pouring process;
B. the PVC gloves are prepared by the processes of glove covering, singeing, first slurry rolling, first slurry spraying, first drying, first cooling, second slurry rolling, second slurry spraying, second drying, second cooling and glove removing in sequence.
7. The method for preparing the PVC gloves according to claim 6, wherein in the step A, the temperature of the first slurry and the temperature of the second slurry are 18-50 ℃, the viscosity of the first slurry is controlled to be 3000-4000 mPa.s, and the viscosity of the second slurry is controlled to be 1000-2000 mPa.s; in the step B, the temperature of a hand-touch mold in the glove covering process is controlled to be 55-65 ℃, the first time of pulp rolling and the second time of pulp rolling are respectively 15-20 seconds independently, the first time of pulp pouring and the second time of pulp pouring are respectively 10-15 minutes independently, the temperature of first drying is 100-120 ℃, the time of first drying is 6-8 minutes, the temperature of second drying is 180-220 ℃, and the time of second drying is 10-20 minutes.
8. The method for preparing PVC gloves according to claim 6, further comprising the steps of performing sand soaking and third drying after the second drying; the sand leaching procedure adopts a mixed solution of PVC particles with the leaching degree of 1000, a plasticizer and PVC paste powder; the proportions of the mixed liquid of the PVC particles with the polymerization degree of 1000, the plasticizer and the PVC paste powder are respectively (50-70): 100: (5-15); the plasticizer is one or more of cyclohexane 1, 2-diisononyl phthalate, tri-n-butyl citrate and dioctyl terephthalate.
9. The method for preparing PVC gloves according to claim 8, wherein the third drying temperature is 180-220 ℃ and the drying time is 10-20 minutes.
10. The method for preparing PVC gloves according to claim 6, wherein the first slurry and the second slurry are vacuum defoamed for 35-50 minutes before use.
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| CN108813763A (en) * | 2018-08-23 | 2018-11-16 | 江苏恒辉安防股份有限公司 | A kind of method that the aqueous PU composite mortar of graphene-prepares PU gloves |
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