CN108102205B - Disposable green environment-friendly gloves and preparation method thereof - Google Patents
Disposable green environment-friendly gloves and preparation method thereof Download PDFInfo
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- CN108102205B CN108102205B CN201711469350.2A CN201711469350A CN108102205B CN 108102205 B CN108102205 B CN 108102205B CN 201711469350 A CN201711469350 A CN 201711469350A CN 108102205 B CN108102205 B CN 108102205B
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/04—Homopolymers or copolymers of ethene
- C08L23/08—Copolymers of ethene
- C08L23/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
- C08L23/0853—Vinylacetate
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- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D19/00—Gloves
- A41D19/015—Protective 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
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/08—Copolymers of ethene
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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
- C08J2403/00—Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
- C08J2403/04—Starch derivatives
- C08J2403/06—Esters
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/06—Biodegradable
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Chemical Kinetics & Catalysis (AREA)
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- Polymers & Plastics (AREA)
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- Health & Medical Sciences (AREA)
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- Gloves (AREA)
Abstract
The invention provides a disposable green environment-friendly glove which is prepared from a mixture comprising the following components in parts by weight: 100 parts of ethylene-vinyl acetate resin; 20-40 parts of an environment-friendly plasticizer; 10-20 parts of modified starch; 25-45 parts of an organic solvent; 20-40 parts of a viscosity reducer; 0.5-2 parts of a release agent; 0.5-1 part of dispersing agent. The disposable green environment-friendly gloves are made of ethylene-vinyl acetate resin as a main raw material, and the elasticity, the hand feeling and the durability of the gloves are superior to those of PE and PVC gloves; has obvious cost advantage and is not easy to cause allergy. The ethylene-vinyl acetate resin can be biologically degraded in nature, and the disposable environment-friendly glove introduces modified starch in the formula, so that the cost of the glove is reduced, and the degradation rate of the glove in the natural environment is greatly increased. The invention also provides a preparation method of the disposable green environment-friendly gloves.
Description
Technical Field
The invention belongs to the technical field of high polymer materials, and particularly relates to a disposable environment-friendly glove and a preparation method thereof.
Background
Disposable protective gloves are widely used in the fields of food processing, medical protection, electronic processing, industrial labor protection and the like. Most of the disposable gloves on the current market are made of polyethylene, polyvinyl chloride, nitrile rubber and latex. The disposable gloves made of the materials can not be degraded or are difficult to degrade after being used and discarded, have great environmental pollution and are not green and environment-friendly.
The development of the disposable environment-friendly gloves is an important research direction in the field of current glove protection, the disposable environment-friendly gloves not only can protect consumers when worn, but also are environment-friendly, and the disposable environment-friendly gloves can be degraded in the natural environment after being used, have no pollution to the environment, are environment-friendly, and greatly relieve the problem of white pollution faced currently.
Disclosure of Invention
The invention aims to provide a disposable environment-friendly glove and a preparation method thereof.
The invention provides a disposable green environment-friendly glove which is prepared from a mixture comprising the following components in parts by weight:
preferably, in the ethylene-vinyl acetate resin, the mass fraction of vinyl acetate monomer is 10-20%.
Preferably, the environment-friendly plasticizer is one or more of acetyl butyl citrate, epoxidized soybean oil and chlorinated palm oil methyl ester;
the weight portion of the environment-friendly plasticizer is 25-35.
Preferably, the modified starch is acetate type modified starch;
the weight part of the modified starch is 13-18 parts.
Preferably, the organic solvent is one or more of butyl acetate, ethyl acetate, acetone, methyl ethyl ketone, DMF and DMSO;
the organic solvent is 30-40 parts by weight.
Preferably, the release agent is nano-scale talcum powder and/or calcium stearate;
the weight part of the release agent is 1-1.5 parts.
Preferably, the dispersant is triethyl hexyl phosphoric acid and/or fatty acid polyglycol ester
The weight portion of the dispersing agent is 0.7-0.8.
Preferably, the weight part of the viscosity reducer is 25-35 parts.
The issue provides a preparation method of disposable green environment-friendly gloves, which comprises the following steps:
stirring 100 parts by weight of ethylene-vinyl acetate resin and 25-45 parts by weight of organic solvent until the ethylene-vinyl acetate resin is completely dissolved, then adding 20-40 parts by weight of environment-friendly plasticizer, 10-20 parts by weight of modified starch, 0.5-2 parts by weight of release agent and 0.5-1 part by weight of dispersant, continuously stirring, and finally adding 20-40 parts by weight of viscosity reducer to obtain ethylene-vinyl acetate resin slurry;
preheating the hand mold to 60-70 ℃, soaking the ethylene-vinyl acetate resin slurry, taking out, baking, cooling and stripping to obtain the disposable green environment-friendly gloves.
The invention provides a disposable green environment-friendly glove which is prepared from a mixture comprising the following components in parts by weight: 100 parts of ethylene-vinyl acetate resin; 20-40 parts of an environment-friendly plasticizer; 10-20 parts of modified starch; 25-45 parts of an organic solvent; 20-40 parts of a viscosity reducer; 0.5-2 parts of a release agent; 0.5-1 part of dispersing agent. The disposable green environment-friendly gloves adopt ethylene-vinyl acetate resin as a main raw material, and compared with the disposable PE and PVC gloves in the prior art, the gloves have better elasticity, hand feeling and durability than the PE and PVC gloves; compared with disposable butyronitrile and latex gloves, the gloves have obvious cost advantage and are not easy to cause allergy. The ethylene-vinyl acetate resin can be biologically degraded in nature, and the disposable environment-friendly glove introduces modified starch in the formula, so that the cost of the glove is reduced, and the degradation rate of the glove in the natural environment is greatly increased. This disposable green gloves is after the use, can degrade under natural environment, and is pollution-free to the environment, and current white pollution problem has been alleviated greatly to green.
Detailed Description
The invention provides a disposable green environment-friendly glove which is prepared from a mixture comprising the following components in parts by weight:
in the invention, the mass fraction of the vinyl acetate monomer in the ethylene-vinyl acetate resin is preferably 10-20%, the performance of the ethylene-vinyl acetate resin has a great relationship with the content of the vinyl acetate monomer, and the ethylene-vinyl acetate resin with the content of the vinyl acetate monomer within the range of 10-20% is selected, so that the ethylene-vinyl acetate resin is softer than polyethylene while the plastic performance of the resin is maintained, and the impact strength is better. From the aspect of cost, the cost of the ethylene-vinyl acetate resin is correspondingly increased along with the increase of the content of the vinyl acetate monomer, and obviously, the lower the cost is, the more favorable the market popularization is as the main material of the disposable glove.
The environment-friendly plasticizer is preferably one or more of acetyl butyl citrate, epoxidized soybean oil and chlorinated palm oil methyl ester; the weight part of the environment-friendly plasticizer is preferably 25-35 parts, and more preferably 30 parts. The plasticizer is added to weaken the molecular acting force among raw materials, enhance the plasticity of the product and reduce the temperature in the processing process. The green environment-friendly plasticizer used in the invention is a natural organic acid ester plasticizer, and is green and environment-friendly.
The modified starch is acetate type modified starch. The acetate modified starch is prepared by acetylating hydroxyl of starch into acetate, and the acetylated modified starch greatly improves the fat solubility of common starch. The weight part of the modified starch is preferably 13-18 parts, and more preferably 15 parts.
The organic solvent is preferably one or more of butyl acetate, ethyl acetate, acetone, methyl ethyl ketone, DMF and DMSO, and is more preferably a mixture of ethyl acetate, butyl acetate, methyl ethyl ketone and DMF; the organic solvents have similar polarity with ethylene-vinyl acetate resin, good compatibility and can rapidly dissolve the resin. The weight part of the organic solvent is preferably 30-40 parts.
The release agent is nano-scale talcum powder and/or calcium stearate; the preferable weight part of the release agent is 1-1.5 parts; the addition of the release agent helps the glove to release from the hand mold smoothly.
The dispersing agent is triethyl hexyl phosphoric acid and/or fatty acid polyglycol ester, and the nano-scale talcum powder and calcium stearate of the release agent can be better dispersed into the slurry by adding the dispersing agent. The weight portion of the dispersing agent is 0.7-0.8.
The viscosity reducer is preferably D70, belongs to saturated alkane, can effectively reduce the viscosity of ethylene-vinyl acetate resin slurry, reduces the generation of bubbles, and is easy to control the gram weight of gloves in production. The weight part of the viscosity reducer is 25-35 parts.
The invention also provides a preparation method of the disposable green environment-friendly gloves, which comprises the following steps:
stirring 100 parts by weight of ethylene-vinyl acetate resin and 25-45 parts by weight of organic solvent until the ethylene-vinyl acetate resin is completely dissolved, then adding 20-40 parts by weight of environment-friendly plasticizer, 10-20 parts by weight of modified starch, 0.5-2 parts by weight of release agent and 0.5-1 part by weight of dispersant, continuously stirring, and finally adding 20-40 parts by weight of viscosity reducer to obtain ethylene-vinyl acetate resin slurry;
the viscosity of the ethylene-vinyl acetate resin slurry is preferably 70-80 mpa.s.
Preheating the hand mold to 60-70 ℃, soaking the ethylene-vinyl acetate resin slurry, taking out, baking, cooling and stripping to obtain the disposable green environment-friendly gloves.
In the present invention, the kinds, amounts and sources of the raw materials are the same as those of the raw materials, and thus, the detailed description thereof is omitted.
The baking temperature is preferably 120-150 ℃, and more preferably 130-140 ℃; the baking time is preferably 10-15 min.
And after cooling to 80-90 ℃, stripping the glove from the hand mold.
The disposable green environment-friendly gloves have the beneficial effects that: compared with the disposable PE and PVC gloves in the prior art, the elasticity, hand feeling and durability of the gloves are superior to those of the PE and PVC gloves; compared with disposable butyronitrile and latex gloves, the gloves have obvious cost advantage and are not easy to cause allergy. The ethylene-vinyl acetate resin is biodegradable in nature, and the modified starch is introduced into the formula of the disposable environment-friendly glove, so that the cost of the glove is reduced, and the degradation rate of the glove in the natural environment is greatly increased. This disposable green gloves is after the use, can degrade under natural environment, and is pollution-free to the environment, and green has alleviated the white pollution problem that faces at present greatly. The disposable green environment-friendly glove is formed by dipping, has simple production process and low cost, and has obvious market competitiveness.
Moreover, the glove is degraded only in the natural environment, and the normal storage and use are not different from the common disposable glove.
In order to further illustrate the present invention, the following examples are provided to describe the disposable green environmental-friendly glove and the method for making the same in detail, but should not be construed as limiting the scope of the present invention.
Example 1
Gloves were prepared according to the following mass fractions:
preparing ethylene-vinyl acetate resin slurry: 10kg of ethylene-vinyl acetate resin and 3kg of organic solvent (mixture of ethyl acetate, butyl acetate, methyl ethyl ketone and DMF) are mixed and stirred for 4 hours, after the resin is completely dissolved, 3kg of plasticizer (mixture of acetyl butyl citrate, epoxidized soybean oil and chlorinated palm oil methyl ester), 1.5kg of modified starch, 0.1kg of release agent calcium stearate and 0.08kg of dispersant fatty acid polyglycol ester are added and stirred for 2.5 hours. And finally, adding 2.5kg of D70 viscosity reducer, and adjusting the viscosity of the slurry to 70-80 mpa.s to obtain the ethylene-vinyl acetate resin slurry.
Preparing disposable green environment-friendly gloves: preheating the hand mold to 62 ℃, then soaking the hand mold in the ethylene-vinyl acetate resin slurry, baking for 13 minutes at 138 ℃, taking out the hand mold after baking is finished, curling, cooling to 85 ℃, and then stripping the glove from the hand mold to obtain the glove.
3 glove samples were randomly sampled and the physical property measurements are shown in Table 1.
TABLE 1 results of physical Properties measurements of glove samples of example 1 of the present invention
Example 2
Gloves were prepared according to the following mass fractions:
preparing ethylene-vinyl acetate resin slurry: 10kg of ethylene-vinyl acetate resin and 3kg of organic solvent (mixture of ethyl acetate, butyl acetate, methyl ethyl ketone and DMF) are mixed and stirred for 4 hours, after the resin is completely dissolved, 3kg of plasticizer (mixture of diisononyl phthalate, dioctyl-iso-phthalate and dibutyl phthalate), 1.5kg of modified starch, 0.1kg of release agent calcium stearate and 0.08kg of dispersant fatty acid polyethylene glycol ester are added, and stirring is continued for 2.5 hours. And finally, adding 2.5kg of D70 viscosity reducer, and adjusting the viscosity of the slurry to 70-80 mpa.s to obtain the ethylene-vinyl acetate resin slurry.
Preparing disposable green environment-friendly gloves: preheating the hand mold to 62 ℃, then soaking the hand mold in ethylene-vinyl acetate resin slurry, baking for 13 minutes at 138 ℃, taking out the hand mold after baking is finished, curling, cooling to 85 ℃, and then stripping the glove from the hand mold to obtain the glove.
3 glove samples were randomly sampled and the physical property measurements are shown in Table 2.
TABLE 2 results of physical Properties measurements of glove samples of example 2 of the present invention
Example 3
Gloves were prepared according to the following mass fractions:
preparing ethylene-vinyl acetate resin slurry: 10kg of ethylene-vinyl acetate resin and 3kg of organic solvent (mixture of ethyl acetate, butyl acetate, methyl ethyl ketone and DMF) are mixed and stirred for 4 hours, after the resin is completely dissolved, 3kg of plasticizer (mixture of acetyl butyl citrate, epoxidized soybean oil and chlorinated palm oil methyl ester), 0.1kg of release agent calcium stearate and 0.08kg of dispersant fatty acid polyglycol ester are added and stirred for 2.5 hours. And finally, adding 2.5kg of D70 viscosity reducer, and adjusting the viscosity of the slurry to 70-80 mpa.s to obtain the ethylene-vinyl acetate resin slurry.
3 glove samples were randomly sampled and the physical property measurements are shown in Table 3.
Table 3 glove sample physical property test results in example 3 of the present invention
Preparing disposable green environment-friendly gloves: preheating the hand mold to 62 ℃, then soaking the hand mold in ethylene-vinyl acetate resin slurry, baking for 13 minutes at 138 ℃, taking out the hand mold after baking is finished, curling, cooling to 85 ℃, and then stripping the glove from the hand mold to obtain the glove.
Respectively taking disposable PE gloves produced by Shandong Huahai plastic product factories sold in the market; disposable PVC gloves and disposable butyronitrile gloves produced by blue sail medical treatment; a comparison experiment is carried out on disposable latex gloves produced by 3M and disposable green environment-friendly gloves prepared by the preparation methods and raw materials of the invention, the gloves are buried in soil, and the degradation condition of the gloves is checked regularly.
TABLE 4 degradation of gloves according to the invention in examples 1 to 3
| Group of | Buried in soil for 1 month | Buried in soil for 2 months | Burying in soil for 4 months | Buried in soil for 6 months |
| Example 1 | The degradation rate is 55 percent | The degradation rate is 82 percent | Complete degradation of | Complete degradation of |
| Example 2 | The degradation rate is 38 percent | The degradation rate is 59 percent | The degradation rate is 86 percent | The degradation rate is 98 percent |
| Example 3 | The degradation rate is 47 percent | The degradation rate is 74% | The degradation rate is 93% | Complete degradation of |
| PE gloves | Does not degrade | Does not degrade | The degradation rate is 2% | The degradation rate is 5 percent |
| PVC gloves | Does not degrade | Does not degrade | Does not degrade | The degradation rate is 1% |
| Butyronitrile gloves | Does not degrade | Does not degrade | The degradation rate is 1% | The degradation rate is 3 percent |
| Latex gloves | Does not degrade | Does not degrade | The degradation rate is 3 percent | The degradation rate is 5 percent |
From the comparison results, the degradation rate of the disposable gloves 1-3 in the embodiment is obviously superior to that of the disposable PE, PVC, butyronitrile gloves and disposable latex gloves on the market. The disposable environment-friendly glove can be completely degraded in nature, has no pollution to the environment, and is environment-friendly. Compared with the embodiment 1-3, the modified starch and the natural organic acid ester plasticizer can accelerate the degradation rate of the glove.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (9)
1. A disposable green environment-friendly glove is prepared from a mixture comprising the following components in parts by weight:
2. the disposable environment-friendly gloves according to claim 1, wherein the ethylene-vinyl acetate resin contains 10-20% by mass of vinyl acetate monomer.
3. The disposable environment-friendly gloves according to claim 1, wherein the natural organic acid ester plasticizer is one or more of acetyl butyl citrate, epoxidized soybean oil and methyl chloropalmitolate;
the weight part of the natural organic acid ester plasticizer is 25-35 parts.
4. The disposable environment-friendly gloves according to claim 1, wherein the acetate modified starch is present in an amount of 13 to 18 parts by weight.
5. The disposable environment-friendly gloves according to claim 1, wherein the organic solvent is one or more of butyl acetate, ethyl acetate, acetone, methyl ethyl ketone, DMF and DMSO;
the organic solvent is 30-40 parts by weight.
6. The disposable green environmental glove of claim 1, wherein the release agent is nano-sized talc and/or calcium stearate;
the weight part of the release agent is 1-1.5 parts.
7. The disposable green environmental glove according to claim 1, wherein the dispersant is triethylhexylphosphoric acid and/or fatty acid polyethylene glycol ester;
the weight portion of the dispersing agent is 0.7-0.8.
8. The disposable environment-friendly gloves according to claim 1, wherein the weight part of the viscosity reducer is 25-35 parts.
9. A preparation method of disposable green environment-friendly gloves comprises the following steps:
stirring 100 parts by weight of ethylene-vinyl acetate resin and 25-45 parts by weight of organic solvent until the ethylene-vinyl acetate resin is completely dissolved, then adding 20-40 parts by weight of natural organic acid ester plasticizer, 10-20 parts by weight of acetate modified starch, 0.5-2 parts by weight of release agent and 0.5-1 part by weight of dispersant, continuously stirring, and finally adding 20-40 parts by weight of viscosity reducer to obtain ethylene-vinyl acetate resin slurry;
preheating the hand mold to 60-70 ℃, soaking the ethylene-vinyl acetate resin slurry, taking out, baking, cooling and stripping to obtain the disposable green environment-friendly gloves.
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| CN115316732B (en) * | 2022-10-13 | 2023-01-31 | 山东恒昌医疗科技股份有限公司 | Moisture-absorbing and sweat-releasing PVC gloves and preparation method thereof |
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| CN101870774A (en) * | 2010-05-10 | 2010-10-27 | 梁雄辉 | Biological starch degradable plastic master batches, production method and degradable plastic thereof |
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| CN101870774A (en) * | 2010-05-10 | 2010-10-27 | 梁雄辉 | Biological starch degradable plastic master batches, production method and degradable plastic thereof |
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