CN114213636A - Method for manufacturing gloves made of renewable biodegradable materials - Google Patents
Method for manufacturing gloves made of renewable biodegradable materials Download PDFInfo
- Publication number
- CN114213636A CN114213636A CN202111076103.2A CN202111076103A CN114213636A CN 114213636 A CN114213636 A CN 114213636A CN 202111076103 A CN202111076103 A CN 202111076103A CN 114213636 A CN114213636 A CN 114213636A
- Authority
- CN
- China
- Prior art keywords
- drying
- gloves
- soaking
- lactic acid
- monomer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 239000000463 material Substances 0.000 title claims abstract description 14
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000001035 drying Methods 0.000 claims abstract description 20
- 239000004626 polylactic acid Substances 0.000 claims abstract description 15
- 229920000747 poly(lactic acid) Polymers 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000004310 lactic acid Substances 0.000 claims abstract description 13
- 235000014655 lactic acid Nutrition 0.000 claims abstract description 13
- 239000000178 monomer Substances 0.000 claims abstract description 12
- 238000002791 soaking Methods 0.000 claims abstract description 12
- 229920002472 Starch Polymers 0.000 claims abstract description 10
- 239000008107 starch Substances 0.000 claims abstract description 10
- 235000019698 starch Nutrition 0.000 claims abstract description 10
- 229920000642 polymer Polymers 0.000 claims abstract description 9
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims abstract description 8
- 239000000839 emulsion Substances 0.000 claims abstract description 8
- 239000008103 glucose Substances 0.000 claims abstract description 8
- JJTUDXZGHPGLLC-UHFFFAOYSA-N lactide Chemical compound CC1OC(=O)C(C)OC1=O JJTUDXZGHPGLLC-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229920002635 polyurethane Polymers 0.000 claims abstract description 8
- 239000004814 polyurethane Substances 0.000 claims abstract description 8
- 240000008042 Zea mays Species 0.000 claims abstract description 7
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 claims abstract description 7
- 235000002017 Zea mays subsp mays Nutrition 0.000 claims abstract description 7
- 230000009471 action Effects 0.000 claims abstract description 7
- 235000005822 corn Nutrition 0.000 claims abstract description 7
- 230000008569 process Effects 0.000 claims abstract description 7
- 244000017020 Ipomoea batatas Species 0.000 claims abstract description 4
- 235000002678 Ipomoea batatas Nutrition 0.000 claims abstract description 4
- 239000000701 coagulant Substances 0.000 claims abstract description 4
- 238000001816 cooling Methods 0.000 claims abstract description 4
- 238000000227 grinding Methods 0.000 claims abstract description 4
- 239000013067 intermediate product Substances 0.000 claims abstract description 4
- 238000002386 leaching Methods 0.000 claims abstract description 4
- 230000001050 lubricating effect Effects 0.000 claims abstract description 4
- 238000000746 purification Methods 0.000 claims abstract description 4
- 238000007142 ring opening reaction Methods 0.000 claims abstract description 4
- 238000007493 shaping process Methods 0.000 claims abstract description 4
- 238000005406 washing Methods 0.000 claims abstract description 4
- 238000000855 fermentation Methods 0.000 claims description 3
- 230000004151 fermentation Effects 0.000 claims description 3
- 230000000379 polymerizing effect Effects 0.000 abstract description 2
- 229920003023 plastic Polymers 0.000 description 21
- 239000004033 plastic Substances 0.000 description 21
- 239000000047 product Substances 0.000 description 11
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- 239000002994 raw material Substances 0.000 description 5
- 239000001569 carbon dioxide Substances 0.000 description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 description 4
- 240000003183 Manihot esculenta Species 0.000 description 3
- 235000016735 Manihot esculenta subsp esculenta Nutrition 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000011325 microbead Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 230000006750 UV protection Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229920006238 degradable plastic Polymers 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000010102 injection blow moulding Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002906 medical waste Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000004224 protection Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/06—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from hydroxycarboxylic acids
- C08G63/08—Lactones or lactides
-
- 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
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/042—Coating with two or more layers, where at least one layer of a composition contains a polymer binder
-
- 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
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/04—Polyesters derived from hydroxy carboxylic acids, e.g. lactones
-
- 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
- C08J2475/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2475/04—Polyurethanes
Abstract
The invention discloses a method for manufacturing renewable biodegradable material gloves, which is characterized by comprising the following steps: taking materials; crushing shell crops such as corn, sweet potato and the like, extracting starch from the crushed shell crops, and preparing the starch into unrefined glucose; fermenting; fermenting glucose to become lactic acid; an intermediate product; concentrating lactic acid monomer to convert into intermediate product-water reducing lactic acid, i.e. lactide; polymerizing; after the lactide monomer is subjected to vacuum purification, the dissolving process is used for completing the ring opening action, so that the monomer is polymerized, and the polymer is modified; washing a mold, attaching a polymer to a hand-shaped grinding tool, soaking a coagulant, and primarily drying and shaping for the first time. Cooling for 3 minutes and then drying for the second time; soaking the gloves into the waterborne polyurethane emulsion, and then drying, curling and vulcanizing; and (3) soaking the gloves into the water-based polyurethane emulsion with the lubricating effect, drying, leaching, demolding after drying and vulcanizing for the second time to obtain the polylactic acid gloves. This application is convenient for degrade, and tensile strength is high.
Description
The technical field is as follows:
the invention relates to the field of gloves, in particular to a method for manufacturing a renewable biodegradable material glove.
Background art:
plastics are widely applied in production and life and are important basic materials. The production and use of plastic products are not standardized, and the plastic wastes are recycled, so that energy resource waste and environmental pollution are caused, and the resource environmental pressure is increased. Actively cope with plastic pollution, the health of people, ecological civilization construction and high-quality development of China. Strengthening the plastic pollution treatment and establishing a long-acting management mechanism of sound plastic products.
Forbidding and limiting the production, sale and use of partial plastic products; plastic products which are forbidden to be produced and sold. And (5) popularization and application of alternative products and modes. The production and sale of ultrathin plastic shopping bags with the thickness of less than 0.025 mm and polyethylene agricultural mulching films with the thickness of less than 0.01 mm are forbidden. The manufacture of plastic products from medical waste is prohibited. The import of waste plastics is prohibited comprehensively. By the end of 2020, production and sale of disposable foamed plastic tableware and disposable plastic cotton swabs are forbidden; production of daily chemical products containing plastic microbeads is prohibited. By the end of 2022, the sale of daily chemicals containing plastic microbeads was prohibited. Plastic products are forbidden and limited to use. Non-degradable plastic bags; disposable plastic tableware; disposable plastic articles for hotels; express plastic packaging;
polylactic acid, also known as polylactide, belongs to the family of polyesters. The polylactic acid is a polymer obtained by polymerizing lactic acid serving as a main raw material, has sufficient and renewable raw material sources, and mainly takes corn, cassava and the like as raw materials. The production process of polylactic acid is pollution-free, and the product can be biodegraded, so that the polylactic acid can be recycled in nature, and is an ideal green high polymer material.
The polylactic acid has good thermal stability, the processing temperature is 170-230 ℃, the polylactic acid has good solvent resistance, and the polylactic acid can be processed in various modes, such as extrusion, spinning, biaxial stretching and injection blow molding. The product made of polylactic acid can be biodegraded, and has good biocompatibility, glossiness, transparency, hand feeling and heat resistance, and certain bacteria resistance, flame retardance and ultraviolet resistance, so the polylactic acid has wide application, can be used as packaging materials, fibers, non-woven fabrics and the like, and is mainly used in the fields of clothing (underwear and coat), industry (building, agriculture, forestry and paper making), medical sanitation and the like at present.
Most of the existing disposable gloves are plastic gloves, the market demand is large, but the gloves are difficult to degrade after being used, and the environment is polluted.
The invention content is as follows:
the invention aims to solve the technical problem of providing a biodegradable water-carbon dioxide heat-resistant composite material which can be completely biodegraded into water and carbon dioxide in natural environment and water body, and has high tensile strength, good heat resistance, multiple flexibility and good elongation.
The technical problem to be solved by the invention is realized by adopting the following technical scheme: a method for manufacturing renewable biodegradable material gloves is characterized in that:
1. taking materials
Crushing shell crops such as corn, sweet potato and the like, extracting starch from the crushed shell crops, and preparing the starch into unrefined glucose;
2. fermentation of
Fermenting glucose to become lactic acid;
3. intermediate products
Concentrating lactic acid monomer to convert into intermediate product-water reducing lactic acid, i.e. lactide;
4. polymerisation
After the lactide monomer is subjected to vacuum purification, the dissolving process is used for completing the ring opening action, so that the monomer is polymerized, and the polymer is modified;
5. washing a mold, attaching a polymer to a hand-shaped grinding tool, soaking a coagulant, and primarily drying and shaping for the first time.
6. Cooling for 3 minutes and then drying for the second time;
7. soaking the gloves into the waterborne polyurethane emulsion, and then drying, curling and vulcanizing;
8. and (3) soaking the gloves into the water-based polyurethane emulsion with the lubricating effect, drying, leaching, demolding after drying and vulcanizing for the second time to obtain the polylactic acid gloves.
The invention has the beneficial effects that: polylactic acid (PLA) is a novel bio-based and renewable biodegradable material, and is prepared from starch raw materials provided by renewable plant resources (such as corn, cassava and the like);
can be completely biodegraded into water and carbon dioxide in natural environment and water body, has the function of environmental protection, and replaces plastic glove products. The glove is high in tensile strength, good in heat resistance, multiple in flexibility and good in elongation.
The specific implementation mode is as follows:
the present invention is further described in order to make the technical means, the creation features, the achievement purposes and the effects of the present invention easy to understand.
Example 1: a method for manufacturing renewable biodegradable material gloves is characterized in that:
1. taking materials
Crushing shell crops such as corn, sweet potato and the like, extracting starch from the crushed shell crops, and preparing the starch into unrefined glucose;
2. fermentation of
Fermenting glucose to become lactic acid;
3. intermediate products
Concentrating lactic acid monomer to convert into intermediate product-water reducing lactic acid, i.e. lactide;
4. polymerisation
After the lactide monomer is subjected to vacuum purification, the dissolving process is used for completing the ring opening action, so that the monomer is polymerized, and the polymer is modified;
5. washing a mold, attaching a polymer to a hand-shaped grinding tool, soaking a coagulant, and primarily drying and shaping for the first time.
6. Cooling for 3 minutes and then drying for the second time;
7. soaking the gloves into the waterborne polyurethane emulsion, and then drying, curling and vulcanizing;
8. and (3) soaking the gloves into the water-based polyurethane emulsion with the lubricating effect, drying, leaching, demolding after drying and vulcanizing for the second time to obtain the polylactic acid gloves.
The invention has the beneficial effects that: polylactic acid (PLA) is a novel bio-based and renewable biodegradable material, and is prepared from starch raw materials provided by renewable plant resources (such as corn, cassava and the like);
can be completely biodegraded into water and carbon dioxide in natural environment and water body.
High tensile strength, good heat resistance, multiple flexibility and good elongation.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (1)
1. A method for manufacturing renewable biodegradable material gloves is characterized in that:
1. taking materials
Crushing shell crops such as corn, sweet potato and the like, extracting starch from the crushed shell crops, and preparing the starch into unrefined glucose;
2. fermentation of
Fermenting glucose to become lactic acid;
3. intermediate products
Concentrating lactic acid monomer to convert into intermediate product-water reducing lactic acid, i.e. lactide;
4. polymerisation
After the lactide monomer is subjected to vacuum purification, the dissolving process is used for completing the ring opening action, so that the monomer is polymerized, and the polymer is modified;
5. washing a mold, attaching a polymer to a hand-shaped grinding tool, soaking a coagulant, and primarily drying and shaping for the first time.
6. Cooling for 3 minutes and then drying for the second time;
7. soaking the gloves into the waterborne polyurethane emulsion, and then drying, curling and vulcanizing;
8. and (3) soaking the gloves into the water-based polyurethane emulsion with the lubricating effect, drying, leaching, demolding after drying and vulcanizing for the second time to obtain the polylactic acid gloves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111076103.2A CN114213636A (en) | 2021-09-14 | 2021-09-14 | Method for manufacturing gloves made of renewable biodegradable materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111076103.2A CN114213636A (en) | 2021-09-14 | 2021-09-14 | Method for manufacturing gloves made of renewable biodegradable materials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114213636A true CN114213636A (en) | 2022-03-22 |
Family
ID=80695933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111076103.2A Pending CN114213636A (en) | 2021-09-14 | 2021-09-14 | Method for manufacturing gloves made of renewable biodegradable materials |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114213636A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101717487A (en) * | 2009-11-20 | 2010-06-02 | 天津碧海蓝天水性高分子材料有限公司 | Polyurethane emulsion and coating agent used for aquosity coating agent of knitted lining glove as well as preparation method and coating method thereof |
| CN108102321A (en) * | 2010-06-22 | 2018-06-01 | 维健股份有限公司 | Polylactic acid gloves and its manufacturing method |
| CN109265940A (en) * | 2018-07-26 | 2019-01-25 | 嘉善天惠服饰有限公司 | One kind is for degradable PLA Biocomposite material of garment accessories and preparation method thereof |
| CN109456581A (en) * | 2018-09-30 | 2019-03-12 | 嘉兴凡高电子商务有限公司 | A kind of PLA Biocomposite material and preparation method thereof of toy for children degradation |
| CN111138818A (en) * | 2020-01-09 | 2020-05-12 | 佛山市业辉服饰配件有限公司 | Degradable environment-friendly buckle and production process thereof |
-
2021
- 2021-09-14 CN CN202111076103.2A patent/CN114213636A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101717487A (en) * | 2009-11-20 | 2010-06-02 | 天津碧海蓝天水性高分子材料有限公司 | Polyurethane emulsion and coating agent used for aquosity coating agent of knitted lining glove as well as preparation method and coating method thereof |
| CN108102321A (en) * | 2010-06-22 | 2018-06-01 | 维健股份有限公司 | Polylactic acid gloves and its manufacturing method |
| CN109265940A (en) * | 2018-07-26 | 2019-01-25 | 嘉善天惠服饰有限公司 | One kind is for degradable PLA Biocomposite material of garment accessories and preparation method thereof |
| CN109456581A (en) * | 2018-09-30 | 2019-03-12 | 嘉兴凡高电子商务有限公司 | A kind of PLA Biocomposite material and preparation method thereof of toy for children degradation |
| CN111138818A (en) * | 2020-01-09 | 2020-05-12 | 佛山市业辉服饰配件有限公司 | Degradable environment-friendly buckle and production process thereof |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220322 |
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