CN110372894B - PVC gloves and preparation method thereof - Google Patents
PVC gloves and preparation method thereof Download PDFInfo
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- CN110372894B CN110372894B CN201910682684.0A CN201910682684A CN110372894B CN 110372894 B CN110372894 B CN 110372894B CN 201910682684 A CN201910682684 A CN 201910682684A CN 110372894 B CN110372894 B CN 110372894B
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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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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/02—Direct processing of dispersions, e.g. latex, to articles
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2327/00—Characterised by the use 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; Derivatives of such polymers
- C08J2327/02—Characterised by the use 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; Derivatives of such polymers not modified by chemical after-treatment
- C08J2327/04—Characterised by the use 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; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08J2327/06—Homopolymers or copolymers of vinyl chloride
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
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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
- C08K5/11—Esters; Ether-esters of acyclic polycarboxylic acids
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- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Gloves (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
The invention relates to the technical field of plastic glove production, in particular to a PVC glove and a preparation method thereof, wherein the preparation method comprises the following steps: A) mixing PVC paste resin, a plasticizer, a stabilizer and a viscosity reducer to obtain slurry; the plasticizer comprises butyl octyl acetyl citrate; B) dipping the glove model into the slurry, taking out, and baking and plasticizing to obtain a hand model coated with an adhesive film; C) and (3) dipping the hand mold coated with the adhesive film into polyurethane slurry, and baking and forming to obtain the PVC gloves. According to the invention, a specific plasticizer is adopted, PVC paste resin, a stabilizer and a viscosity reducer are matched to prepare slurry of glove raw materials, the hand mold is immersed in the slurry, and the hand mold coated with a glue film is obtained after baking and plasticizing. And then soaking the mixture in polyurethane slurry, and baking and forming to obtain the PVC gloves. The PVC gloves prepared by the invention have better tensile strength and elongation. In addition, the raw materials of the PVC gloves provided by the invention are green and environment-friendly.
Description
Technical Field
The invention relates to the technical field of plastic glove production, in particular to a PVC glove and a preparation method thereof.
Background
Disposable PVC gloves are an emerging industry, originating in the united states, and are gradually developing in japan. Compared with butyronitrile gloves, the PVC gloves have more outstanding cost advantages, are comfortable to wear, have good protection effect, and occupy most market shares in disposable protective gloves. China is currently the world's leading supply of PVC gloves. The main consumer population of the PVC gloves is concentrated in industrially developed countries such as America, Europe, Japan and the like, and the PVC gloves are widely applied to the fields of medical examination, nursing, food processing, fast food service and the like. With the increasing domestic consumption level, more and more industries such as the medical industry and the catering industry begin to pay more attention to the important function of wearing gloves, the consumption of the gloves is on a rapid growth trend in the domestic market share, and the market of the PVC gloves is gradually growing.
With the wider and wider use of PVC gloves, the performance requirements of the gloves by customers are higher and higher.
Disclosure of Invention
In view of the above, the technical problem to be solved by the invention is to provide a PVC glove and a preparation method thereof.
The invention provides a preparation method of PVC gloves, which comprises the following steps:
A) mixing PVC paste resin, a plasticizer, a stabilizer and a viscosity reducer to obtain slurry; the plasticizer is acetyl butyl octyl citrate;
B) dipping the glove model in the slurry, and baking and plasticizing to obtain a hand model coated with an adhesive film;
C) and (3) dipping the hand mould coated with the adhesive film into the polyurethane slurry, and baking and forming to obtain the PVC gloves.
Preferably, in step a), the stabilizer comprises a calcium zinc stabilizer; the viscosity reducer comprises D70.
Preferably, in the step a), the mass ratio of the PVC paste resin, the plasticizer, the stabilizer and the viscosity reducer is 100: 50-100: 0.5-2: 20 to 50.
Preferably, in the step A), the mixing temperature is 15-55 ℃, and the mixing time is 1-6 h.
Preferably, in the step a), vacuum defoaming is further included after the mixing;
the temperature of the vacuum defoaming is 15-40 ℃, and the time of the vacuum defoaming is 1-3 h.
Preferably, in the step B), the temperature of the glove model during dipping is 65-90 ℃, and the dipping time is 2-10 s.
Preferably, in the step B), the temperature for baking and plasticizing is 180-220 ℃, and the time for baking and plasticizing is 5-9 min.
Preferably, in the step C), the temperature of the hand mold covered with the adhesive film during dipping is 110-140 ℃, and the dipping time is 2-10 s.
Preferably, in the step C), the baking forming temperature is 120-170 ℃, and the baking forming time is 0.5-2 min.
The invention also provides a PVC glove prepared by the preparation method.
The invention provides a preparation method of PVC gloves, which comprises the following steps: A) mixing PVC paste resin, a plasticizer, a stabilizer and a viscosity reducer to obtain slurry; the plasticizer is acetyl butyl octyl citrate; B) dipping the glove model in the slurry, and baking and plasticizing to obtain a hand model coated with an adhesive film; C) and (3) dipping the hand mold coated with the adhesive film into polyurethane slurry, and baking and molding to obtain the PVC glove. According to the invention, a specific plasticizer is adopted, and PVC paste resin, a stabilizer and a viscosity reducer are matched to prepare slurry of glove raw materials, then, a hand mold is soaked in the slurry, and then, the hand mold is baked and plasticized to obtain the hand mold coated with an adhesive film. And then, dipping the hand mold coated with the adhesive film into the polyurethane slurry, and baking and forming to obtain the PVC gloves. The PVC gloves prepared by the invention have better tensile strength and elongation. Compared with the common conventional gloves, the PVC gloves provided by the invention do not contain benzene ring structures, are low in toxicity, excellent in safety performance, green and environment-friendly, and improve the market competitiveness.
Experimental results show that the average value of the tensile strength of the PVC gloves prepared by the invention is higher than 22.0MPa, and the average value of the elongation is higher than 415%.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a preparation method of PVC gloves, which comprises the following steps:
A) mixing PVC paste resin, a plasticizer, a stabilizer and a viscosity reducer to obtain slurry; the plasticizer is acetyl butyl octyl citrate;
B) dipping the glove model in the slurry, and baking and plasticizing to obtain a hand model coated with an adhesive film;
C) and (3) dipping the hand mold coated with the adhesive film into polyurethane slurry, and baking and molding to obtain the PVC glove.
In the invention, the plasticizer is acetyl butyl octyl citrate. The source of the butyl octyl acetylcitrate is not particularly limited, and the butyl octyl acetylcitrate can be generally commercially available. In certain embodiments of the present invention, the butyl octyl acetylcitrate is butyl octyl acetylcitrate produced by Shandong blue Sail chemical Co. The plasticizer adopted by the invention is non-aromatic, the structure of the plasticizer does not contain benzene rings, and finally the prepared PVC gloves are benzene-free PVC gloves, so that the gloves are low in toxicity, excellent in safety performance and environment-friendly.
In an embodiment of the invention, the viscosity reducer comprises D70.
In an embodiment of the invention, the stabilizer comprises a calcium zinc stabilizer. In certain embodiments of the invention, the calcium zinc stabilizer is south Asian calcium zinc 46P and/or Falca SBA-203 CZ-G.
In the embodiment of the present invention, the mass ratio of the PVC paste resin, the plasticizer, the stabilizer, and the viscosity reducer is 100: 50-100: 0.5-2: 20 to 50. In certain embodiments of the present invention, the mass ratio of the PVC paste resin, the plasticizer, the stabilizer, and the viscosity reducer is 100: 50: 0.5: 20. 100, and (2) a step of: 65: 1: 30. 100, and (2) a step of: 75: 1.5: 40 or 100: 90: 2: 50.
the PVC paste resin, the plasticizer, the stabilizer and the viscosity reducer are mixed to obtain slurry.
In the embodiment of the invention, the temperature of the mixing is 15-55 ℃. In certain embodiments, the temperature of the mixing is 15 ℃, 30 ℃, 40 ℃, or 55 ℃. In the embodiment of the invention, the mixing time is 1-6 h. In certain embodiments, the time of mixing is 1h, 2h, 3h, or 5 h.
In certain embodiments of the invention, the mixing is stirred mixing. The stirring method for the stirring and mixing is not particularly limited in the present invention, and a stirring method known to those skilled in the art may be employed. In certain embodiments of the invention, the mixing is performed in a batching tank.
In certain embodiments of the present invention, the mixing further comprises vacuum debubbling. The vacuum degree of the vacuum defoaming is not particularly limited in the present invention, and a vacuum degree of vacuum defoaming known to those skilled in the art may be used. In the embodiment of the invention, the temperature of the vacuum defoaming is 15-40 ℃. In certain embodiments, the temperature of the vacuum debubbling is 15 ℃, 30 ℃, or 40 ℃. In the embodiment of the invention, the vacuum defoaming time is 1-3 h. In certain embodiments, the vacuum debubbling time is 1h, 2h, or 3 h.
And after the slurry is obtained, dipping the glove model into the slurry, taking out, and baking and plasticizing to obtain the hand model coated with the adhesive film.
In the embodiment of the invention, the temperature of the glove model during dipping is 65-90 ℃. In certain embodiments, the glove former has a temperature of 70 ℃, 80 ℃, or 90 ℃ when dipped. In the embodiment of the invention, the dipping time is 2-10 s. In certain embodiments, the time of immersion is 6s or 4 s. In certain embodiments of the invention, the glove former is a ceramic hand former.
In the embodiment of the invention, the temperature for baking and plasticizing is 180-220 ℃. In certain embodiments, the temperature of the bake plastification is 180 ℃, 190 ℃, 210 ℃, or 220 ℃. In the embodiment of the invention, the baking and plasticizing time is 300-540 s. In certain embodiments, the bake plastication time is 320s, 360s, 420s, or 540 s. In certain embodiments of the present invention, the apparatus for toasting plasticization is an oven.
And after the hand mold coated with the adhesive film is obtained, dipping the hand mold coated with the adhesive film into the polyurethane slurry, taking out the hand mold, and baking and forming to obtain the PVC gloves.
In some embodiments of the present invention, the cooling step is further included before the hand mold covered with the adhesive film is dipped in the polyurethane paste. The temperature after cooling is the temperature of the hand mould covered with the adhesive film during dipping. In some embodiments of the invention, the cooling is by natural cooling.
In the embodiment of the invention, the temperature of the hand mold covered with the adhesive film during dipping is 110-140 ℃. In some embodiments of the present invention, the temperature of the hand mold coated with the adhesive film is 120 ℃, 110 ℃, 130 ℃ or 140 ℃ at the time of dipping. In the embodiment of the invention, the dipping time is 2-10 s. In certain embodiments of the invention, the time of the impregnation is 5s, 8s or 2 s.
The method for preparing the polyurethane slurry is not particularly limited, and the method for preparing the polyurethane slurry known to those skilled in the art can be used. In certain embodiments of the present invention, the polyurethane slurry is prepared by mixing polyurethane and demineralized water. Specifically, the weight ratio of the Lin 191PU to the softened water is 1: 20 by mixing.
In the embodiment of the invention, the temperature of the baking forming is 120-170 ℃. In certain embodiments of the invention, the temperature of the bake form is 120 ℃, 130 ℃, 150 ℃ or 170 ℃. In the embodiment of the invention, the baking and forming time is 0.5-2 min. In certain embodiments of the invention, the bake forming time is 1.5min, 1.0min, or 0.5 min.
In some embodiments of the present invention, after the baking and forming, cooling, curling and demolding are further included. In certain embodiments, the cooling is natural cooling to ambient temperature.
The source of the raw material components used in the present invention is not particularly limited, and may be generally commercially available.
The invention also provides the PVC gloves prepared by the preparation method. The PVC gloves of the invention have excellent tensile strength and elongation.
The invention provides a preparation method of PVC gloves, which comprises the following steps: A) mixing PVC paste resin, a plasticizer, a stabilizer and a viscosity reducer to obtain slurry; the plasticizer is acetyl butyl octyl citrate; B) dipping the glove model in the slurry, and baking and plasticizing to obtain a hand model coated with an adhesive film; C) and (3) dipping the hand mold coated with the adhesive film into polyurethane slurry, and baking and molding to obtain the PVC glove. According to the invention, a specific plasticizer is adopted, and PVC paste resin, a stabilizer and a viscosity reducer are matched to prepare slurry of glove raw materials, then, a hand mold is soaked in the slurry, and then, the hand mold is baked and plasticized to obtain the hand mold coated with an adhesive film. And then, dipping the hand mold coated with the adhesive film into the polyurethane slurry, and baking and forming to obtain the PVC gloves. The PVC gloves prepared by the invention have better tensile strength and elongation. Compared with the common conventional gloves, the PVC gloves provided by the invention do not contain benzene ring structures, are low in toxicity, excellent in safety performance, green and environment-friendly, and improve the market competitiveness.
Experimental results show that the average value of the tensile strength of the PVC gloves prepared by the invention is higher than 22.0MPa, and the average value of the elongation is higher than 415%.
In order to further illustrate the present invention, the following examples are provided to describe in detail a PVC glove and a method for preparing the same, but they should not be construed as limiting the scope of the present invention.
The raw materials used in the following examples are all commercially available, and the polyurethane slurry is prepared from 191PU and softened water according to a mass ratio of 1: 20 by mixing.
Example 1
Putting 100 parts by weight of PVC paste resin, 50 parts by weight of butyl octyl acetyl citrate, 0.5 part by weight of south Asian calcium zinc 46P and 20 parts by weight of viscosity reducer D70 into a mixing tank, stirring and mixing for 5 hours at 15 ℃, and defoaming for 3 hours in vacuum at 15 ℃ to obtain slurry;
and heating the ceramic hand mold to 70 ℃, then soaking the ceramic hand mold in the slurry for 6s, taking out the ceramic hand mold, and baking the ceramic hand mold in an oven at 220 ℃ for 320s for plasticizing to obtain the hand mold coated with the adhesive film.
And after the hand mold covered with the glue film is taken out of the oven, naturally cooling to 120 ℃, then soaking in the polyurethane slurry for 5s, taking out, baking in the oven at 120 ℃ for 1.5min, naturally cooling to normal temperature, curling and demolding to obtain the PVC gloves.
6 cut pieces were cut from the obtained PVC gloves, and the tensile strength and elongation of the cut pieces were measured according to ASTM D412, and the results are shown in Table 1.
Table 1 physical property test results of PVC gloves of example 1 of the present invention
| Slice thickness (mm) | Tensile Strength (MPa) | Elongation (%) | |
| 1 | 0.069 | 25.9 | 417 |
| 2 | 0.072 | 25.4 | 420 |
| 3 | 0.070 | 24.3 | 432 |
| 4 | 0.070 | 24.2 | 399 |
| 5 | 0.071 | 25.9 | 413 |
| 6 | 0.072 | 24.7 | 425 |
| Mean value of | 0.071 | 25.1 | 417 |
As can be seen from Table 1, the PVC gloves obtained in example 1 had an average tensile strength of 25.1MPa and an average elongation of 417%.
Example 2
Putting 100 parts by weight of PVC paste resin, 65 parts by weight of butyl octyl acetyl citrate, 1 part by weight of Faai SBA-203CZ-G and 30 parts by weight of viscosity reducer D70 into a batching tank, stirring and mixing for 3h at 30 ℃, and defoaming for 2h in vacuum at 30 ℃ to obtain slurry;
and heating the ceramic hand mold to 80 ℃, then soaking the ceramic hand mold in the slurry for 4s, taking out the ceramic hand mold, and baking the ceramic hand mold in an oven for 540s at 180 ℃ for plasticizing to obtain the hand mold coated with the adhesive film.
And after the hand mold covered with the glue film is taken out of the oven, naturally cooling to 110 ℃, then soaking in the polyurethane slurry for 8s, taking out, baking in the oven at 130 ℃ for 1.0min, naturally cooling to normal temperature, curling and demolding to obtain the PVC gloves.
6 cut pieces were cut from the obtained PVC gloves, and the tensile strength and elongation of the cut pieces were measured according to ASTM D412, and the results are shown in Table 2.
Table 2 physical property test results of PVC gloves according to example 2 of the present invention
| Slice thickness (mm) | Tensile Strength (MPa) | Elongation (%) | |
| 1 | 0.070 | 24.8 | 419 |
| 2 | 0.072 | 23.9 | 409 |
| 3 | 0.068 | 24.5 | 424 |
| 4 | 0.070 | 24.6 | 425 |
| 5 | 0.071 | 25.2 | 439 |
| 6 | 0.073 | 24.9 | 438 |
| Mean value of | 0.071 | 24.7 | 426 |
As can be seen from Table 2, the PVC gloves obtained in example 2 had an average tensile strength of 24.7MPa and an average elongation of 426%.
Example 3
Putting 100 parts by weight of PVC paste resin, 75 parts by weight of butyl octyl acetyl citrate, 1.5 parts by weight of south Asia calcium zinc 46P and 40 parts by weight of viscosity reducer D70 into a mixing tank, stirring and mixing for 2 hours at 40 ℃, and defoaming for 1 hour at 40 ℃ in vacuum to obtain slurry;
and heating the ceramic hand mold to 90 ℃, then soaking the ceramic hand mold in the slurry for 4s, taking out the ceramic hand mold, and then baking the ceramic hand mold in an oven at 190 ℃ for 420s for plasticizing to obtain the hand mold coated with the adhesive film.
And after the hand mold covered with the glue film is taken out of the oven, naturally cooling to 130 ℃, then soaking in the polyurethane slurry for 2s, taking out, baking in the oven at 150 ℃ for 0.5min, naturally cooling to normal temperature, curling and demolding to obtain the PVC gloves.
6 cut pieces were cut from the obtained PVC gloves, and the cut pieces were tested for tensile strength and elongation according to ASTM D412, and the test results are shown in Table 3.
Table 3 physical property test results of PVC gloves of example 3 of the present invention
| Slice thickness (mm) | Tensile Strength (MPa) | Elongation (%) | |
| 1 | 0.072 | 22.2 | 428 |
| 2 | 0.069 | 22.8 | 432 |
| 3 | 0.072 | 23.1 | 441 |
| 4 | 0.070 | 24.9 | 453 |
| 5 | 0.071 | 24.1 | 442 |
| 6 | 0.071 | 21.2 | 421 |
| Mean value of | 0.071 | 23.1 | 436 |
As can be seen from Table 3, the PVC gloves obtained in example 3 had an average tensile strength of 23.1MPa and an average elongation of 436%.
Example 4
Putting 100 parts by weight of PVC paste resin, 90 parts by weight of butyl octyl acetylcitrate, 2 parts by weight of FAMIA SBA-203CZ-G and 50 parts by weight of viscosity reducer D70 into a batching tank, stirring and mixing for 1h at 55 ℃, and defoaming for 1h in vacuum at 40 ℃ to obtain slurry;
and heating the ceramic hand mold to 90 ℃, then soaking the ceramic hand mold in the slurry for 4s, taking out the ceramic hand mold, and then baking the ceramic hand mold in an oven at 210 ℃ for 360s for plasticizing to obtain the hand mold coated with the adhesive film.
And after the hand mold covered with the glue film is taken out of the oven, naturally cooling to 140 ℃, then soaking in the polyurethane slurry for 2s, taking out, baking in the oven at 170 ℃ for 0.5min, naturally cooling to normal temperature, curling and demolding to obtain the PVC gloves.
6 cut pieces were cut from the obtained PVC gloves, and the cut pieces were tested for tensile strength and elongation according to ASTM D412, and the test results are shown in Table 4.
Table 4 physical property test results of PVC gloves of example 4 of the present invention
| Slice thickness (mm) | Tensile Strength (MPa) | Elongation (%) | |
| 1 | 0.071 | 20.6 | 420 |
| 2 | 0.070 | 23.7 | 468 |
| 3 | 0.071 | 21.0 | 431 |
| 4 | 0.069 | 22.1 | 436 |
| 5 | 0.069 | 22.7 | 447 |
| 6 | 0.070 | 23.0 | 448 |
| Mean value of | 0.070 | 22.2 | 442 |
As can be seen from Table 4, the PVC gloves obtained in example 4 had an average tensile strength of 22.2MPa and an average elongation of 442%.
Comparative example 1
Putting 100 parts by weight of PVC paste resin, 75 parts by weight of DOTP (diisooctyl terephthalate), 1.5 parts by weight of south Asian calcium and zinc 46P and 40 parts by weight of viscosity reducer D70 into a batching tank, stirring and mixing for 2 hours at 40 ℃, and defoaming for 1 hour in vacuum at 40 ℃ to obtain slurry;
and heating the ceramic hand mold to 90 ℃, then soaking the ceramic hand mold in the slurry for 4s, taking out the ceramic hand mold, and then baking the ceramic hand mold in an oven at 190 ℃ for 420s for plasticizing to obtain the hand mold coated with the adhesive film.
And after the hand mold covered with the glue film is taken out of the oven, naturally cooling to 130 ℃, then soaking in the polyurethane slurry for 2s, taking out, baking in the oven at 150 ℃ for 0.5min, naturally cooling to normal temperature, curling and demolding to obtain the PVC gloves.
Immediately, 6 cut samples were cut from the obtained PVC gloves, and the tensile strength and elongation of the cut samples were measured according to ASTM D412, and the measurement results are shown in Table 5.
TABLE 5 physical Properties test results of PVC gloves of comparative example 1 of the present invention
| Slice thickness (mm) | Tensile Strength (MPa) | Elongation (%) | |
| 1 | 0.070 | 18.8 | 392 |
| 2 | 0.070 | 18.1 | 409 |
| 3 | 0.071 | 18.0 | 389 |
| 4 | 0.069 | 20.2 | 385 |
| 5 | 0.069 | 17.1 | 376 |
| 6 | 0.070 | 16.7 | 372 |
| Mean value of | 0.070 | 18.2 | 387 |
As can be seen from Table 5, the PVC gloves obtained in comparative example 1 had an average tensile strength of 18.2MPa and an average elongation of 387%.
Comparative example 2
Putting 100 parts by weight of PVC paste resin, 75 parts by weight of tributyl citrate, 1.5 parts by weight of south Asia calcium zinc 46P and 40 parts by weight of viscosity reducer D70 into a mixing tank, stirring and mixing for 2 hours at 40 ℃, and defoaming for 1 hour at 40 ℃ in vacuum to obtain slurry;
and heating the ceramic hand mold to 90 ℃, then soaking the ceramic hand mold in the slurry for 4s, taking out the ceramic hand mold, and then baking the ceramic hand mold in an oven at 190 ℃ for 420s for plasticizing to obtain the hand mold coated with the adhesive film.
And after the hand mold coated with the adhesive film is taken out of the oven, naturally cooling to 130 ℃, then soaking in the polyurethane slurry for 2s, taking out, baking in the oven at 150 ℃ for 0.5min, naturally cooling to normal temperature, then curling and demolding to obtain the PVC gloves.
6 cut pieces were cut from the obtained PVC gloves, and the tensile strength and elongation of the cut pieces were measured according to ASTM D412, and the results are shown in Table 6.
TABLE 6 physical Properties test results of PVC gloves of comparative example 2 of the present invention
| Slice thickness (mm) | Tensile Strength (MPa) | Elongation (%) | |
| 1 | 0.072 | 17.0 | 362 |
| 2 | 0.069 | 16.9 | 355 |
| 3 | 0.072 | 17.5 | 348 |
| 4 | 0.070 | 17.8 | 354 |
| 5 | 0.071 | 16.8 | 342 |
| 6 | 0.071 | 17.2 | 357 |
| Mean value of | 0.071 | 17.2 | 351 |
As can be seen from Table 6, the PVC gloves obtained in comparative example 2 had an average tensile strength of 17.2MPa and an average elongation of 351%.
Experimental results show that the average value of the tensile strength of the PVC gloves prepared by the invention is higher than 22.0MPa, and the average value of the elongation is higher than 415%.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (9)
1. A preparation method of PVC gloves comprises the following steps:
A) mixing PVC paste resin, a plasticizer, a stabilizer and a viscosity reducer to obtain slurry; the plasticizer is acetyl butyl octyl citrate; the mass ratio of the PVC paste resin to the plasticizer to the stabilizer to the viscosity reducer is 100: 50-100: 0.5-2: 20 to 50 parts by weight;
B) dipping the glove model in the slurry, and baking and plasticizing to obtain a hand model coated with an adhesive film;
C) dipping the hand mold coated with the adhesive film into polyurethane slurry, and baking and molding to obtain a PVC glove;
the temperature of the hand mold covered with the adhesive film is 110-140 ℃ during dipping;
the temperature of the baking forming is 120-170 ℃.
2. The method of claim 1, wherein in step a), the stabilizer comprises a calcium zinc stabilizer; the viscosity reducer comprises D70.
3. The method according to claim 1, wherein the mixing temperature in step A) is 15-55 ℃ and the mixing time is 1-6 h.
4. The method according to claim 1, wherein in step a), the mixing further comprises vacuum defoaming;
the temperature of the vacuum defoaming is 15-40 ℃, and the time of the vacuum defoaming is 1-3 h.
5. The method for preparing the glove mold according to claim 1, wherein in the step B), the temperature of the glove mold during dipping is 65-90 ℃, and the dipping time is 2-10 s.
6. The preparation method of claim 1, wherein in the step B), the temperature for baking and plasticizing is 180-220 ℃, and the time for baking and plasticizing is 5-9 min.
7. The method according to claim 1, wherein the time for the impregnation in step C) is 2 to 10 seconds.
8. The preparation method according to claim 1, wherein in the step C), the baking time is 0.5-2 min.
9. PVC gloves produced by the process according to any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910682684.0A CN110372894B (en) | 2019-07-26 | 2019-07-26 | PVC gloves and preparation method thereof |
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| CN112239548A (en) * | 2020-10-16 | 2021-01-19 | 江苏世恒医疗科技有限公司 | Reinforced disposable PVC (polyvinyl chloride) glove and processing technology thereof |
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| JP2002194159A (en) * | 2000-12-25 | 2002-07-10 | Kanegafuchi Chem Ind Co Ltd | Vinyl chloride-based paste resin composition and disposable glove |
| CN103552324A (en) * | 2013-11-08 | 2014-02-05 | 福州大学 | Polyester fiber reinforced PVC (polyvinyl chloride) composite material with intermediate foaming layer |
| CN107841069A (en) * | 2017-12-06 | 2018-03-27 | 蓝帆医疗股份有限公司 | A kind of PVC based composition and use thereof in packaging, foaming PVC gloves and preparation method thereof |
| CN107955293A (en) * | 2017-12-06 | 2018-04-24 | 蓝帆医疗股份有限公司 | A kind of PVC bases composition, PVC glove and preparation method thereof |
| CN109749299A (en) * | 2018-12-03 | 2019-05-14 | 顶级手套(兴化)有限公司 | A kind of novel PVC environmental protection gloves and preparation method |
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| KR101674317B1 (en) * | 2015-02-12 | 2016-11-08 | 주식회사 엘지화학 | Plasticizer, resin composition and method for preparing them |
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| JP2002194159A (en) * | 2000-12-25 | 2002-07-10 | Kanegafuchi Chem Ind Co Ltd | Vinyl chloride-based paste resin composition and disposable glove |
| CN103552324A (en) * | 2013-11-08 | 2014-02-05 | 福州大学 | Polyester fiber reinforced PVC (polyvinyl chloride) composite material with intermediate foaming layer |
| CN107841069A (en) * | 2017-12-06 | 2018-03-27 | 蓝帆医疗股份有限公司 | A kind of PVC based composition and use thereof in packaging, foaming PVC gloves and preparation method thereof |
| CN107955293A (en) * | 2017-12-06 | 2018-04-24 | 蓝帆医疗股份有限公司 | A kind of PVC bases composition, PVC glove and preparation method thereof |
| CN109749299A (en) * | 2018-12-03 | 2019-05-14 | 顶级手套(兴化)有限公司 | A kind of novel PVC environmental protection gloves and preparation method |
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