CN114181479A - Preparation method of high-strength high-elongation PVC gloves - Google Patents
Preparation method of high-strength high-elongation PVC gloves Download PDFInfo
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- CN114181479A CN114181479A CN202111660679.3A CN202111660679A CN114181479A CN 114181479 A CN114181479 A CN 114181479A CN 202111660679 A CN202111660679 A CN 202111660679A CN 114181479 A CN114181479 A CN 114181479A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 229920000915 polyvinyl chloride Polymers 0.000 claims abstract description 68
- 239000004800 polyvinyl chloride Substances 0.000 claims abstract description 68
- 239000004014 plasticizer Substances 0.000 claims abstract description 26
- 239000003381 stabilizer Substances 0.000 claims abstract description 23
- ZFMQKOWCDKKBIF-UHFFFAOYSA-N bis(3,5-difluorophenyl)phosphane Chemical compound FC1=CC(F)=CC(PC=2C=C(F)C=C(F)C=2)=C1 ZFMQKOWCDKKBIF-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000011347 resin Substances 0.000 claims abstract description 21
- 229920005989 resin Polymers 0.000 claims abstract description 21
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 16
- 239000002994 raw material Substances 0.000 claims abstract description 14
- IHBCFWWEZXPPLG-UHFFFAOYSA-N [Ca].[Zn] Chemical compound [Ca].[Zn] IHBCFWWEZXPPLG-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229920001971 elastomer Polymers 0.000 claims abstract description 13
- 239000000806 elastomer Substances 0.000 claims abstract description 13
- 239000003086 colorant Substances 0.000 claims abstract description 11
- 239000012760 heat stabilizer Substances 0.000 claims abstract description 11
- 239000002002 slurry Substances 0.000 claims description 70
- 238000003756 stirring Methods 0.000 claims description 67
- 238000007598 dipping method Methods 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 26
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 claims description 21
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 claims description 21
- 238000001914 filtration Methods 0.000 claims description 17
- 238000001816 cooling Methods 0.000 claims description 11
- HXNDUMRFWWGNQX-UHFFFAOYSA-N [5,5-dimethyl-1-(2-methylpropanoyloxy)hexyl] 2-methylpropanoate Chemical group C(C(C)C)(=O)OC(CCCC(C)(C)C)OC(C(C)C)=O HXNDUMRFWWGNQX-UHFFFAOYSA-N 0.000 claims description 10
- KRKNYBCHXYNGOX-UHFFFAOYSA-K Citrate Chemical compound [O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-K 0.000 claims description 8
- 239000008029 phthalate plasticizer Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 238000002791 soaking Methods 0.000 claims description 5
- 238000000465 moulding Methods 0.000 claims description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Natural products OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 abstract description 28
- -1 citric acid ester Chemical class 0.000 abstract description 14
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 abstract description 9
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 abstract description 3
- 229910001385 heavy metal Inorganic materials 0.000 abstract description 3
- 231100000331 toxic Toxicity 0.000 abstract description 3
- 230000002588 toxic effect Effects 0.000 abstract description 3
- 150000003839 salts Chemical class 0.000 abstract description 2
- 230000000704 physical effect Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000004566 building material Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000012785 packaging film Substances 0.000 description 1
- 229920006280 packaging film Polymers 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000036314 physical performance Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
Abstract
The invention discloses a preparation method of a high-strength high-elongation PVC (polyvinyl chloride) glove, which relates to the field of glove preparation and is prepared from the following raw materials in parts by weight: 80-100 parts of PVC paste resin, 75-85 parts of plasticizer component, 2-3 parts of heat stabilizer, 10-15 parts of viscosity reducer, 1-2 parts of colorant and 10-15 parts of 325 elastomer; according to the invention, the 325 elastomer is used for modifying PVC paste resin to increase the elongation and resilience, and the dioctyl adipate plasticizer and the citric acid ester are added to adjust the wearing hand feeling, so that a high-elongation comfortable PVC glove product is successfully developed; and the calcium-zinc stabilizer replaces the traditional stabilizer, so that the calcium-zinc stabilizer not only can replace toxic stabilizers such as lead-cadmium salts, organic tin and the like, but also has quite good thermal stability, light stability, transparency and tinting strength, has good processability in PVC resin products, has a thermal stability equivalent to that of lead salt stabilizers, does not contain harmful heavy metals and benzene harmful substances, and meets the requirements of environmental protection.
Description
Technical Field
The invention relates to the technical field of glove preparation, in particular to a preparation method of a high-strength high-elongation PVC glove.
Background
PVC has the advantages of excellent performance, low price, simple processing and the like, and is widely applied to various aspects of building materials, floor leathers, pipes, packaging films, foaming materials and the like, wherein, the PVC gloves are widely applied to labor protection and family sanitation in the industries of health inspection, food industry, chemical industry, electronic industry, pharmaceutical industry, paint coating industry, printing and dyeing industry and the like.
The common PVC glove product is generally composed of PVC paste resin, a plasticizer, a stabilizer and other components, the inherent properties of molecular chains of the PVC which is the main component of the glove product limit the physical properties such as tensile property and resilience property, the wearing feeling and the elongation are common, and the stabilizer adopted in the production of the traditional PVC glove is a toxic stabilizer such as lead-cadmium salts, organic tin and the like, contains harmful substances such as harmful heavy metals and benzene and does not meet the requirements of green and environmental protection of the current society.
Disclosure of Invention
The invention aims to solve the problems that the inherent properties of the molecular chain of the existing PVC glove limit the physical properties such as tensile property and resilience property, the wearing feeling and the elongation are relatively common, and the traditional stabilizer does not meet the requirements of green and environmental protection in the current society.
In order to achieve the purpose, the invention adopts the following technical scheme:
a high-strength high-elongation PVC glove is prepared from the following raw materials in parts by weight: 80-100 parts of PVC paste resin, 75-85 parts of plasticizer component, 2-3 parts of heat stabilizer, 10-15 parts of viscosity reducer, 1-2 parts of colorant and 10-15 parts of 325 elastomer.
Preferably, the PVC paste resin is polyvinyl chloride, the plasticizer component is a mixture of dioctyl phthalate, dioctyl adipate and citric acid ester, the heat stabilizer is a calcium-zinc stabilizer, and the viscosity reducer is trimethylpentanediol diisobutyrate.
Preferably, the weight part ratio of the dioctyl phthalate, the dioctyl adipate and the citric acid ester is 2:2:1, the dioctyl phthalate is 30-34 parts, the dioctyl adipate is 30-34 parts, and the citric acid ester is 15-17 parts.
A preparation method of a high-strength high-elongation PVC glove comprises the following steps:
adding the raw materials in proportion, stirring at one time, defoaming in vacuum, and standing;
filtering the obtained slurry, stirring for the second time, defoaming in vacuum, and standing;
carrying out dipping treatment on the hand mould;
and (4) putting the dipped hand mould into an oven for baking, and then cooling, demoulding and forming.
Preferably, the steps of adding the raw materials in proportion, stirring, defoaming and standing at one time specifically comprise:
sequentially adding 30-34 parts of dioctyl phthalate plasticizer, 30-34 parts of dioctyl adipate plasticizer, 15-17 parts of citrate plasticizer and 2-3 parts of calcium zinc stabilizer into a stirring barrel, stirring at a low speed, then adding 80-100 parts of PVC paste resin and 10-15 parts of 325 elastomer, finally adding 1-2 parts of coloring agent, then stirring at a high speed, then adding 10-15 parts of trimethylpentanediol diisobutyrate viscosity reducer, defoaming in vacuum, and standing for later use to form a slurry I;
the vacuum defoaming step is as follows:
putting the slurry to be treated into vacuum defoaming equipment, opening a valve to exhaust air to ensure that a pressure difference is formed between an equipment placing chamber and a vacuum pump;
opening valves of the vacuum pump and the equipment placing chamber, and exhausting gas in the equipment under the action of the air pressure difference;
and opening the pneumatic gate after the exhaust process is finished, and taking out the treated slurry to compact the surface of the slurry, thereby repeatedly working.
Preferably, the slow stirring speed is 100-200r/min, the stirring time is 10-20min, the fast stirring speed is 1000-1200r/min, the stirring time is 2-3h, and the temperature of the slurry during stirring is 30-50 ℃.
Preferably, the filtering, secondary stirring and vacuum defoaming specifically include:
and putting the slurry I into a filter vat for filtering, wherein the filter vat needs to be vibrated in the process to ensure that the vibration frequency is 60-80Hz, the viscosity of the slurry obtained by filtering is 600-800pa.s, then carrying out secondary stirring on the obtained slurry, and standing for later use after vacuum defoaming.
Preferably, the secondary stirring rotation speed is 200-300r/min, the stirring time is 5-10min, and the slurry temperature is 30-40 ℃ during stirring.
Preferably, the dipping treatment of the hand mold specifically includes:
preheating the hand mould to 60-70 ℃, then soaking the hand mould in the prepared second slurry for 30-40s, controlling the temperature of the second slurry to be 20-30 ℃, taking out the hand mould after the hand mould is soaked, and dripping for 1-2min until the slurry on the hand mould is completely drained.
Preferably, the hand mold after dipping is put into an oven for baking, and then is cooled, demoulded and formed, and the method specifically comprises the following steps:
placing the hand mould after the dipping treatment into an oven with the temperature of 190 ℃ of 170-;
taking out the hand mold after baking, putting the hand mold into the slurry II again, dipping for 20-30s, taking out the hand mold after dipping, dripping for 1-2min, and then putting the hand mold after secondary dipping into an oven at the temperature of 100-150 ℃ for baking for 5-8 min;
and taking out the hand mold after the secondary baking, naturally cooling to 50-60 ℃ in the air, curling by a curling machine, and demolding to obtain the finished glove.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the 325 elastomer is used for modifying the PVC paste resin to increase the elongation and resilience, and the dioctyl adipate plasticizer and the citric acid ester are added for adjusting the wearing hand feeling, so that the elongation of the produced PVC gloves can reach 430%, the strength is stable at 19MPa, and the wearing hand feeling is also improved to a great extent.
2. The invention replaces the traditional stabilizer with the calcium-zinc stabilizer, not only can replace toxic stabilizers such as lead-cadmium salts, organic tin and the like, but also has quite good thermal stability, light stability, transparency and tinting strength, has good processing performance in PVC resin products, has the thermal stability equivalent to that of lead salt stabilizers, does not contain harmful heavy metals, does not contain benzene harmful substances, and meets the requirements of environmental protection.
3. The invention replaces the traditional plasticizer with the dioctyl phthalate plasticizer, has the advantages of good comprehensive performance, good mixing performance, high plasticizing efficiency, good heat resistance and weather resistance of the processed plastic, low volatility and good electrical insulation performance, can reduce the total amount of the system plasticizer, can improve the physical performance of gloves, reduce the process temperature, improve the utilization rate of fire coal, is beneficial to reducing the production cost of enterprises and improve the economic benefit of the enterprises.
Drawings
FIG. 1 is a flow chart of the steps of a method for preparing a high-strength high-elongation PVC glove according to the present invention;
FIG. 2 is a block diagram of raw material components for preparing a high-strength high-elongation PVC glove provided by the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
The first embodiment is as follows: a high-strength high-elongation PVC glove is prepared from the following raw materials in parts by weight: 80 parts of PVC paste resin, 75 parts of plasticizer component, 2 parts of heat stabilizer, 10 parts of viscosity reducer, 1 part of colorant and 10 parts of 325 elastomer.
Wherein, the PVC paste resin is polyvinyl chloride, the plasticizer component is a mixture of dioctyl phthalate, dioctyl adipate and citric acid ester, the heat stabilizer is a calcium-zinc stabilizer, and the viscosity reducer is trimethyl pentanediol diisobutyrate.
Wherein the weight part ratio of the dioctyl phthalate to the dioctyl adipate to the citric acid ester is 2:2:1, the dioctyl phthalate is 30 parts, the dioctyl adipate is 30 parts, and the citric acid ester is 15 parts.
A preparation method of a high-strength high-elongation PVC glove comprises the following steps:
s1, adding the raw materials in proportion, stirring once, defoaming in vacuum, and standing, wherein the method specifically comprises the following steps:
sequentially adding 30 parts of dioctyl phthalate plasticizer, 30 parts of dioctyl adipate plasticizer, 15 parts of citrate plasticizer and 2 parts of calcium zinc stabilizer into a stirring barrel, slowly stirring at the stirring speed of 100r/min for 10min, then adding 80 parts of PVC paste resin and 10 parts of 325 elastomer, finally adding 1 part of coloring agent, then quickly stirring at the stirring speed of 1000r/min for 2h, adding 10 parts of trimethylpentanediol diisobutyrate viscosity reducer when stirring at the slurry temperature of 30 ℃, standing for later use after vacuum defoaming, and forming slurry I;
wherein the vacuum defoaming step comprises the following steps:
putting the slurry to be treated into vacuum defoaming equipment, opening a valve to exhaust air to ensure that a pressure difference is formed between an equipment placing chamber and a vacuum pump;
opening valves of the vacuum pump and the equipment placing chamber, and exhausting gas in the equipment under the action of the air pressure difference;
and opening the pneumatic gate after the exhaust process is finished, and taking out the treated slurry to compact the surface of the slurry, thereby repeatedly working.
S2, filtering the obtained slurry, stirring for the second time, defoaming in vacuum, and standing:
and putting the first slurry into a filter vat for filtering, wherein the filter vat needs to be vibrated in the process to ensure that the vibration frequency is 60Hz, the viscosity of the slurry obtained by filtering is 600pa.s, then carrying out secondary stirring on the obtained slurry at the stirring speed of 200r/min for 5min, the temperature of the slurry during stirring is 30 ℃, and then standing for later use after vacuum defoaming.
S3, dipping the hand mold, which specifically comprises the following steps:
preheating the hand mould to 60 ℃, then soaking the hand mould in the prepared second slurry for 30s, controlling the temperature of the second slurry at the moment to be 20 ℃, taking out the hand mould after the hand mould is soaked, and dripping for 1min until the slurry on the hand mould is completely drained.
S4, placing the dipped hand mold into an oven for baking, cooling immediately, demolding and molding, and specifically comprising the following steps:
placing the hand mould subjected to the dipping treatment into an oven at 170 ℃ for baking for 3min, wherein the hand mould keeps rotating at a constant speed in the baking process, so that the hand mould is heated uniformly;
taking out the hand mold after baking, putting the hand mold into the second slurry again, dipping for 20s, taking out the hand mold after dipping, dripping for 1min, and then putting the hand mold after secondary dipping into an oven at 100 ℃ for baking for 5 min;
and taking out the hand mold after the secondary baking, naturally cooling to 50 ℃ in the air, curling by a curling machine, and demolding to obtain the finished glove.
The physical property of the PVC gloves in the first embodiment of the invention is detected, and the detection steps are as follows: 4 sliced samples were cut from the obtained PVC gloves, and the tensile strength and elongation of the sliced samples were measured according to ASTM D412, and the results are shown in the following table:
| slice thickness (mm) | Tensile Strength (MPa) | Elongation (%) | |
| 1 | 0.065 | 18.3 | 425 |
| 2 | 0.068 | 18.8 | 428 |
| 3 | 0.070 | 19.3 | 432 |
| 4 | 0.071 | 19.6 | 435 |
| Mean value of | 0.0685 | 19 | 430 |
As can be seen from the table, the PVC gloves obtained in example one have an average tensile strength of 19MPa and an average elongation of 430%.
Example two: a high-strength high-elongation PVC glove is prepared from the following raw materials in parts by weight: 90 parts of PVC paste resin, 80 parts of plasticizer component, 2 parts of heat stabilizer, 12 parts of viscosity reducer, 1 part of colorant and 12 parts of 325 elastomer.
Wherein, the PVC paste resin is polyvinyl chloride, the plasticizer component is a mixture of dioctyl phthalate, dioctyl adipate and citric acid ester, the heat stabilizer is a calcium-zinc stabilizer, and the viscosity reducer is trimethyl pentanediol diisobutyrate.
Wherein the weight part ratio of the dioctyl phthalate to the dioctyl adipate to the citric acid ester is 2:2:1, the dioctyl phthalate is 32 parts, the dioctyl adipate is 32 parts, and the citric acid ester is 16 parts.
A preparation method of a high-strength high-elongation PVC glove comprises the following steps:
s1, adding the raw materials in proportion, stirring once, defoaming in vacuum, and standing, wherein the method specifically comprises the following steps:
adding 32 parts of dioctyl phthalate plasticizer, 32 parts of dioctyl adipate plasticizer, 16 parts of citrate plasticizer and 2 parts of calcium zinc stabilizer into a stirring barrel in sequence, stirring at a slow speed of 150r/min for 15min, then adding 90 parts of PVC paste resin and 12 parts of 325 elastomer, finally adding 1 part of coloring agent, then stirring at a fast speed of 1100r/min for 2.5h, adding 12 parts of trimethylpentanediol diisobutyrate viscosity reducer when stirring at the slurry temperature of 40 ℃, and standing for later use after vacuum defoaming to form slurry I;
wherein the vacuum defoaming step comprises the following steps:
putting the slurry to be treated into vacuum defoaming equipment, opening a valve to exhaust air to ensure that a pressure difference is formed between an equipment placing chamber and a vacuum pump;
opening valves of the vacuum pump and the equipment placing chamber, and exhausting gas in the equipment under the action of the air pressure difference;
and opening the pneumatic gate after the exhaust process is finished, and taking out the treated slurry to compact the surface of the slurry, thereby repeatedly working.
S2, filtering the obtained slurry, stirring for the second time, defoaming in vacuum, and standing:
and putting the first slurry into a filter vat for filtering, wherein the filter vat needs to be vibrated in the process to ensure that the vibration frequency is 70Hz, the viscosity of the slurry obtained by filtering is 700pa.s, then carrying out secondary stirring on the obtained slurry, wherein the stirring speed is 250r/min, the stirring time is 8min, the temperature of the slurry during stirring is 35 ℃, and then standing for later use after vacuum defoaming.
S3, dipping the hand mold, which specifically comprises the following steps:
preheating the hand mould to 65 ℃, then soaking the hand mould in the prepared second slurry for 35s, controlling the temperature of the second slurry to be 25 ℃, taking out the hand mould after the hand mould is soaked, and dripping for 1.5min until the slurry on the hand mould is completely drained.
Putting the dipped hand mould into an oven for baking, and cooling, demoulding and forming immediately, wherein the method specifically comprises the following steps:
placing the hand mould subjected to the dipping treatment into an oven at 180 ℃ for baking for 4min, wherein the hand mould keeps rotating at a constant speed in the baking process, so that the hand mould is heated uniformly;
taking out the hand mold after baking, putting the hand mold into the second slurry again, dipping for 25s, taking out the hand mold after dipping, dripping for 1.5min, and then putting the hand mold after secondary dipping into an oven at 125 ℃ for baking for 6 min;
and taking out the hand mold after the secondary baking, naturally cooling to 55 ℃ in the air, curling by a curling machine, and demolding to obtain the finished glove.
The physical property of the PVC gloves in the second embodiment of the invention is detected, and the detection steps are as follows: 4 sliced samples were cut from the obtained PVC gloves, and the tensile strength and elongation of the sliced samples were measured according to ASTM D412, and the results are shown in the following table:
as can be seen from the table, the average value of the tensile strength and the average value of the elongation of the PVC gloves obtained in example two were 18.5MPa and 420%
Example three: a high-strength high-elongation PVC glove is prepared from the following raw materials in parts by weight: 100 parts of PVC paste resin, 85 parts of plasticizer component, 3 parts of heat stabilizer, 15 parts of viscosity reducer, 2 parts of colorant and 15 parts of 325 elastomer.
Wherein, the PVC paste resin is polyvinyl chloride, the plasticizer component is a mixture of dioctyl phthalate, dioctyl adipate and citric acid ester, the heat stabilizer is a calcium-zinc stabilizer, and the viscosity reducer is trimethyl pentanediol diisobutyrate.
Wherein the weight part ratio of the dioctyl phthalate to the dioctyl adipate to the citric acid ester is 2:2:1, the dioctyl phthalate is 34 parts, the dioctyl adipate is 34 parts, and the citric acid ester is 17 parts.
A preparation method of a high-strength high-elongation PVC glove comprises the following steps:
s1, adding the raw materials in proportion, stirring once, defoaming in vacuum, and standing, wherein the method specifically comprises the following steps:
adding 34 parts of dioctyl phthalate plasticizer, 34 parts of dioctyl adipate plasticizer, 17 parts of citrate plasticizer and 3 parts of calcium-zinc stabilizer into a stirring barrel in sequence, stirring at a slow speed, wherein the stirring speed is 200r/min, the stirring time is 20min, then adding 100 parts of PVC paste resin and 15 parts of 325 elastomer, finally adding 2 parts of coloring agent, then stirring at a fast speed, the stirring speed is 1200r/min, the stirring time is 3h, the temperature of the slurry during stirring is 50 ℃, then adding 15 parts of trimethylpentanediol diisobutyrate viscosity reducer, and standing for later use after vacuum defoaming to form a slurry I;
wherein the vacuum defoaming step comprises the following steps:
putting the slurry to be treated into vacuum defoaming equipment, opening a valve to exhaust air to ensure that a pressure difference is formed between an equipment placing chamber and a vacuum pump;
opening valves of the vacuum pump and the equipment placing chamber, and exhausting gas in the equipment under the action of the air pressure difference;
and opening the pneumatic gate after the exhaust process is finished, and taking out the treated slurry to compact the surface of the slurry, thereby repeatedly working.
S2, filtering the obtained slurry, stirring for the second time, defoaming in vacuum, and standing:
and putting the first slurry into a filter vat for filtering, wherein the filter vat needs to be vibrated in the process to ensure that the vibration frequency is 80Hz, the viscosity of the slurry obtained by filtering is 800pa.s, then carrying out secondary stirring on the obtained slurry, wherein the stirring speed is 300r/min, the stirring time is 10min, the temperature of the slurry during stirring is 40 ℃, and then standing for later use after vacuum defoaming.
S3, dipping the hand mold, which specifically comprises the following steps:
preheating the hand mould to 70 ℃, then soaking the hand mould in the prepared second slurry for 40s, controlling the temperature of the second slurry at the moment to be 30 ℃, taking out the hand mould after the hand mould is soaked, and dripping for 2min until the slurry on the hand mould is completely drained.
S4, placing the dipped hand mold into an oven for baking, cooling immediately, demolding and molding, and specifically comprising the following steps:
placing the hand mould subjected to the dipping treatment into an oven at 190 ℃ for baking for 5min, wherein the hand mould keeps rotating at a constant speed in the baking process, so that the hand mould is heated uniformly;
taking out the hand mold after baking, putting the hand mold into the second slurry again, dipping for 30s, taking out the hand mold after dipping, dripping for 2min, and then putting the hand mold after secondary dipping into an oven at 150 ℃ for baking for 8 min;
and taking out the hand mold after the secondary baking, naturally cooling to 60 ℃ in the air, curling by a curling machine, and demolding to obtain the finished glove.
The physical properties of the PVC gloves in the third embodiment of the invention are detected, and the detection steps are as follows: 4 sliced samples were cut from the obtained PVC gloves, and the tensile strength and elongation of the sliced samples were measured according to ASTM D412, and the results are shown in the following table:
| slice thickness (mm) | Tensile Strength (MPa) | Elongation (%) | |
| 1 | 0.069 | 17.5 | 420 |
| 2 | 0.069 | 17.8 | 423 |
| 3 | 0.071 | 18.2 | 427 |
| 4 | 0.071 | 18.5 | 430 |
| Mean value of | 0.070 | 18.0 | 425 |
As can be seen from the table, the average value of the tensile strength and the average value of the elongation of the PVC gloves obtained in example three were 18MPa and 425%
By combining the experimental results, the elongation of the produced PVC gloves can reach 430%, the strength is stable at 19MPa, and the wearing hand feeling is also improved to a great extent.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. The high-strength high-elongation PVC gloves are characterized by being prepared from the following raw materials in parts by weight: 80-100 parts of PVC paste resin, 75-85 parts of plasticizer component, 2-3 parts of heat stabilizer, 10-15 parts of viscosity reducer, 1-2 parts of colorant and 10-15 parts of 325 elastomer.
2. A high strength, high elongation PVC glove as claimed in claim 1 wherein said PVC paste resin is polyvinyl chloride, said plasticizer component is a mixture of dioctyl phthalate, dioctyl adipate, and citrate, said heat stabilizer is calcium zinc stabilizer, and said viscosity reducing agent is trimethylpentanediol bis isobutyrate.
3. A high strength high elongation PVC glove according to claim 2, wherein the ratio of the parts by weight of dioctyl phthalate, dioctyl adipate, and citrate is 2:2:1, the dioctyl phthalate is 30-34 parts, the dioctyl adipate is 30-34 parts, and the citrate is 15-17 parts.
4. A preparation method of a high-strength high-elongation PVC glove is characterized by comprising the following steps:
adding the raw materials in proportion, stirring at one time, defoaming in vacuum, and standing;
filtering the obtained slurry, stirring for the second time, defoaming in vacuum, and standing;
carrying out dipping treatment on the hand mould;
and (4) putting the dipped hand mould into an oven for baking, and then cooling, demoulding and forming.
5. The method for preparing the high-strength and high-elongation PVC gloves according to claim 4, wherein the steps of adding the raw materials in proportion, stirring, defoaming and standing for one time specifically comprise:
sequentially adding 30-34 parts of dioctyl phthalate plasticizer, 30-34 parts of dioctyl adipate plasticizer, 15-17 parts of citrate plasticizer and 2-3 parts of calcium zinc stabilizer into a stirring barrel, stirring at a low speed, then adding 80-100 parts of PVC paste resin and 10-15 parts of 325 elastomer, finally adding 1-2 parts of coloring agent, then stirring at a high speed, then adding 10-15 parts of trimethylpentanediol diisobutyrate viscosity reducer, defoaming in vacuum, and standing for later use to form a slurry I;
the vacuum defoaming step is as follows:
putting the slurry to be treated into vacuum defoaming equipment, and opening a valve of the vacuum defoaming equipment to exhaust air so as to form a pressure difference between an equipment placing chamber and a vacuum pump;
opening valves of the vacuum pump and the equipment placing chamber, and exhausting gas in the vacuum defoaming equipment under the action of air pressure difference;
and opening the pneumatic gate after the exhaust process is finished, taking out the treated slurry, and compacting the surface of the slurry, so that repeated work is carried out to finish defoaming.
6. The method for preparing high-strength and high-elongation PVC gloves according to claim 5, wherein the slow stirring speed is 100-200r/min, the stirring time is 10-20min, the fast stirring speed is 1000-1200r/min, the stirring time is 2-3h, and the temperature of the slurry during stirring is 30-50 ℃.
7. The method for preparing the high-strength and high-elongation PVC gloves according to claim 4, wherein the filtering, secondary stirring and vacuum defoaming specifically comprise the following steps:
and putting the slurry I into a filter vat for filtering, wherein the filter vat needs to be vibrated in the process to ensure that the vibration frequency is 60-80Hz, the viscosity of the slurry obtained by filtering is 600-800pa.s, then carrying out secondary stirring on the obtained slurry, and standing for later use after vacuum defoaming.
8. The method for preparing high-strength high-elongation PVC gloves according to claim 7, wherein the secondary stirring speed is 200-300r/min, the stirring time is 5-10min, and the slurry temperature during stirring is 30-40 ℃.
9. The method for preparing the high-strength high-elongation PVC gloves according to claim 4, wherein the step of dipping the hand mold specifically comprises the following steps:
preheating the hand mould to 60-70 ℃, then soaking the hand mould in the prepared second slurry for 30-40s, controlling the temperature of the second slurry to be 20-30 ℃, taking out the hand mould after the hand mould is soaked, and dripping for 1-2min until the slurry on the hand mould is completely drained.
10. The method for preparing the high-strength high-elongation PVC gloves according to claim 4, wherein the step of putting the dipped hand mold into an oven for baking, and then cooling, demolding and molding comprises the following specific steps:
placing the hand mould after the dipping treatment into an oven with the temperature of 190 ℃ of 170-;
taking out the hand mold after baking, putting the hand mold into the slurry II again, dipping for 20-30s, taking out the hand mold after dipping, dripping for 1-2min, and then putting the hand mold after secondary dipping into an oven at the temperature of 100-150 ℃ for baking for 5-8 min;
and taking out the hand mold after the secondary baking, naturally cooling to 50-60 ℃ in the air, curling by a curling machine, and demolding to obtain the finished glove.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114773750A (en) * | 2022-05-20 | 2022-07-22 | 泗洪捍福康医疗科技有限公司 | Blue butyronitrile-simulated PVC gloves with super-high elasticity and production process thereof |
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| US20050015848A1 (en) * | 2003-06-23 | 2005-01-27 | Hao Junjie | Disposable gloves |
| CN110305343A (en) * | 2019-07-26 | 2019-10-08 | 山东蓝帆新材料有限公司 | A kind of PVC glove and preparation method thereof |
| CN113121934A (en) * | 2021-06-03 | 2021-07-16 | 江苏华源医疗科技有限公司 | PVC frosted glove and preparation process thereof |
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| US20050015848A1 (en) * | 2003-06-23 | 2005-01-27 | Hao Junjie | Disposable gloves |
| CN110305343A (en) * | 2019-07-26 | 2019-10-08 | 山东蓝帆新材料有限公司 | A kind of PVC glove and preparation method thereof |
| CN113121934A (en) * | 2021-06-03 | 2021-07-16 | 江苏华源医疗科技有限公司 | PVC frosted glove and preparation process thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114773750A (en) * | 2022-05-20 | 2022-07-22 | 泗洪捍福康医疗科技有限公司 | Blue butyronitrile-simulated PVC gloves with super-high elasticity and production process thereof |
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