CN110845446B - Preparation method and application of pure cotton glove washing-free coagulator - Google Patents
Preparation method and application of pure cotton glove washing-free coagulator Download PDFInfo
- Publication number
- CN110845446B CN110845446B CN201911088112.6A CN201911088112A CN110845446B CN 110845446 B CN110845446 B CN 110845446B CN 201911088112 A CN201911088112 A CN 201911088112A CN 110845446 B CN110845446 B CN 110845446B
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- Prior art keywords
- coagulant
- drying
- washing
- glove
- yarn
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Classifications
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D301/00—Preparation of oxiranes
- C07D301/27—Condensation of epihalohydrins or halohydrins with compounds containing active hydrogen atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D303/00—Compounds containing three-membered rings having one oxygen atom as the only ring hetero atom
- C07D303/02—Compounds containing oxirane rings
- C07D303/36—Compounds containing oxirane rings with hydrocarbon radicals, substituted by nitrogen atoms
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
- D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
- D06M13/46—Compounds containing quaternary nitrogen atoms
- D06M13/463—Compounds containing quaternary nitrogen atoms derived from monoamines
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/02—Natural fibres, other than mineral fibres
- D06M2101/04—Vegetal fibres
- D06M2101/06—Vegetal fibres cellulosic
Abstract
The invention discloses a preparation method of a pure cotton glove washing-free coagulant and application thereof. Meanwhile, the problems that the conventional coagulant magnesium chloride and calcium nitrate are used as the coagulant and are required to be washed for a plurality of times after the coagulant is rubberized, and the coagulant residue is very easy to cause due to the existence of a hand mould and the strength of a rubber film is reduced due to the fact that insoluble matters such as calcium carbonate and the like are easy to form in the glove can be avoided.
Description
Technical Field
The invention belongs to a preparation method and application of a pure cotton glove washing-free coagulant.
Background
Most latex glove production in the latex industry adopts an ion deposition method (also called a coagulant dipping method) to produce latex gloves, and the latex glove is a glove method which can achieve the required film thickness by one dipping. The thickness of the deposited film of the glove produced by this method is directly related to the duration of the template residence time within the dip coagulant and the dip latex. During the production operation, the fingers of the glove model always enter the coagulant and leave the coagulant after being immersed in the coagulant, so that the number of wrists of the coagulant ion adsorption amount part of the fingers is large, and the thickness of the glove film is different between the fingers and other parts.
Disclosure of Invention
The invention aims to: in order to solve the defects in the prior art, the invention provides a preparation method and application of a pure cotton glove washing-free coagulant.
The technical scheme is as follows: a preparation method of a washing-free coagulant for pure cotton gloves comprises the following steps: adding epoxy chloropropane into a 500mL four-necked bottle with a condenser tube in a water bath at a constant temperature of 40 ℃, slowly dropwise adding dimethylamine under stirring, controlling the mol ratio of the epoxy chloropropane to the dimethylamine to be 1:1.05, continuously stirring after the dropwise addition, slowly raising the temperature to 70 ℃, and carrying out constant temperature reaction for 5-7 h to obtain the organic modified coagulant.
The application of the coagulant prepared by the preparation method of the pure cotton glove washing-free coagulant comprises the following process flows: yarn-cation modification-glove weaving-latex dipping (PU glue) -drying-leaching-drying-curling-drying-demolding; wherein:
in the cationic modification: the yarn is placed in a modifying liquid containing an organic modifying coagulant and sodium hydroxide by adopting an impregnation method, and the bath ratio is 1:10, immersing for a certain time at a certain temperature, taking out, washing with water to neutrality, and drying.
The beneficial effects are that: the invention replaces the conventional inorganic coagulant with the organic modified coagulant, and changes the process of immersing and adding the coagulant after the yarn is woven into the glove into the process of carrying out cationic modification (organic modified coagulant) treatment on the yarn in the dyeing and finishing process of the yarn before the glove is woven, thereby solving the uniformity problem, simultaneously, the organic modified coagulant is combined with the yarn in a covalent bond without washing, solving the problems that the inorganic coagulant such as calcium nitrate and the like are not removed completely, affecting the strength performance of a glue film, reducing the washing times, needing 4-5 times of circulating washing originally, only needing 1 time of washing after improvement, and having no requirement on water temperature.
According to the invention, cotton yarn is modified by developing the cationic modifier, and the modified yarn is woven into the glove, so that the problem of uneven dipping of the coagulant is solved, and the direct dipping is realized. Meanwhile, the problems that the conventional coagulant magnesium chloride and calcium nitrate are used as the coagulant and are required to be washed for a plurality of times after the coagulant is rubberized, and the coagulant residue is very easy to cause due to the existence of a hand mould and the strength of a rubber film is reduced due to the fact that insoluble matters such as calcium carbonate and the like are easy to form in the glove can be avoided.
Drawings
Fig. 1 is a schematic diagram of the principle structure of the present invention.
Description of the embodiments
The following technical solutions in the embodiments of the present invention will be clearly and completely described so that those skilled in the art can better understand the advantages and features of the present invention, thereby making a clearer definition of the protection scope of the present invention. The described embodiments of the present invention are intended to be only a few, but not all embodiments of the present invention, and all other embodiments that may be made by one of ordinary skill in the art without inventive faculty are intended to be within the scope of the present invention.
Examples
As shown in fig. 1, the principle of the present invention is as follows: the surface of the yarn is negatively charged, and the latex is added with a coagulating agent with negative charge in the preparation process, so that the surface is negatively charged, electrostatic repulsion exists between the yarn and the latex during sizing, and the surface of the fiber is positively charged by dipping inorganic salts such as calcium nitrate into the surface of the yarn, so that the colloid is easily adsorbed on the surface of the yarn during dipping the latex, and sizing is completed.
Specifically, the process flow is as follows: yarn-cation modification-glove weaving-latex dipping (PU glue) -drying-leaching-drying-curling-drying-demolding; wherein:
in the cationic modification: the yarn is placed in a modifying liquid containing an organic modifying coagulant and sodium hydroxide by adopting an impregnation method, and the bath ratio is 1:10, immersing for a certain time at a certain temperature, taking out, washing with water to neutrality, and drying.
In this example, the coagulant was prepared as follows: adding epoxy chloropropane into a 500mL four-necked bottle with a condenser tube in a water bath at a constant temperature of 40 ℃, slowly dropwise adding trimethylamine under stirring, controlling the mol ratio of the epoxy chloropropane to the trimethylamine to be 1:1.05, continuously stirring after the dropwise addition, slowly raising the temperature to 70 ℃, and carrying out constant temperature reaction for 5-7 h to obtain the organic modified coagulant. The specific reaction formula is as follows:
in this example, the cotton yarn fiber surface is negatively charged, and the surface of the fiber modified by the organically modified coagulant is positively charged, and the attraction between the positive and negative charges is much greater than the forces of hydrogen bonding and van der Waals forces during the unmodified process. Facilitating precipitation of negatively charged latex on the yarn.
The yarns of the invention are respectively treated with an inorganic coagulant Ca (NO 3 ) 2 And an organic modified coagulant, and the tensile force and elongation at break of each were measured, and are shown in Table 1 below.
Table 1 test item comparison table
| Inorganic coagulant Ca (NO) 3 ) 2 | Organic modified coagulant | |
| tension/N | 12.5 | 15.6 |
| Elongation at break/% | 625 | 715 |
The invention replaces the conventional inorganic coagulant with the organic modified coagulant, and changes the process of immersing and adding the coagulant after the yarn is woven into the glove into the process of carrying out cationic modification (organic modified coagulant) treatment on the yarn in the dyeing and finishing process of the yarn before the glove is woven, thereby solving the uniformity problem, simultaneously, the organic modified coagulant is combined with the yarn in a covalent bond without washing, solving the problems that the inorganic coagulant such as calcium nitrate and the like are not removed completely, affecting the strength performance of a glue film, reducing the washing times, needing 4-5 times of circulating washing originally, only needing 1 time of washing after improvement, and having no requirement on water temperature.
According to the invention, cotton yarn is modified by developing the cationic modifier, and the modified yarn is woven into the glove, so that the problem of uneven dipping of the coagulant is solved, and the direct dipping is realized. Meanwhile, the problems that the conventional coagulant magnesium chloride and calcium nitrate are used as the coagulant and are required to be washed for a plurality of times after the coagulant is rubberized, and the coagulant residue is very easy to cause due to the existence of a hand mould and the strength of a rubber film is reduced due to the fact that insoluble matters such as calcium carbonate and the like are easy to form in the glove can be avoided.
Claims (1)
1. The application of the coagulant prepared by the preparation method of the washing-free coagulant for the pure cotton glove is characterized in that: the preparation of the coagulant is as follows: adding epoxy chloropropane into a 500mL four-necked bottle with a condenser tube in a water bath at a constant temperature of 40 ℃, slowly dropwise adding trimethylamine under stirring, controlling the mol ratio of the epoxy chloropropane to the trimethylamine to be 1:1.05, continuously stirring after the dropwise addition is finished, slowly raising the temperature to 70 ℃, and carrying out constant temperature reaction for 5-7 hours to obtain an organic modified coagulant;
the application of the prepared coagulant comprises the following process flows: yarn, cation modification, glove weaving, PU gum dipping, drying, leaching, drying, curling, drying and demoulding; wherein:
in the cationic modification: the yarn is placed in a modifying liquid containing an organic modifying coagulant and sodium hydroxide by adopting an impregnation method, and the bath ratio is 1:10, immersing for a certain time at a certain temperature, taking out, washing with water to neutrality, and drying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911088112.6A CN110845446B (en) | 2019-11-08 | 2019-11-08 | Preparation method and application of pure cotton glove washing-free coagulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911088112.6A CN110845446B (en) | 2019-11-08 | 2019-11-08 | Preparation method and application of pure cotton glove washing-free coagulator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110845446A CN110845446A (en) | 2020-02-28 |
| CN110845446B true CN110845446B (en) | 2023-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911088112.6A Active CN110845446B (en) | 2019-11-08 | 2019-11-08 | Preparation method and application of pure cotton glove washing-free coagulator |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101838932A (en) * | 2010-04-23 | 2010-09-22 | 浙江理工大学 | Method for improving cationized modification evenness of cotton fabrics |
| CN102669855A (en) * | 2012-05-08 | 2012-09-19 | 傅玉玉 | Waterborne polyurethane coating glove and production process thereof |
| CN105884923A (en) * | 2014-12-24 | 2016-08-24 | 江南大学 | Novel preparation method for modified cationic cassia gum |
| CN207626617U (en) * | 2017-12-08 | 2018-07-20 | 天津双安劳保橡胶有限公司 | A kind of latex insulation gloves |
| CN108360257A (en) * | 2018-02-06 | 2018-08-03 | 恒天海龙（潍坊）新材料有限责任公司 | A kind of preparation method of cation-modified viscose rayon |
| CN108912654A (en) * | 2018-07-20 | 2018-11-30 | 张家港思淇科技有限公司 | A kind of PPU glue and the production technology that dipped gloves are prepared using the PPU glue |
| CN110130125A (en) * | 2019-05-27 | 2019-08-16 | 齐齐哈尔大学 | A method of improving rescutched tow dyeability |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3213779A1 (en) * | 2016-03-01 | 2017-09-06 | Chemical Intelligence Limited | Medical examination gloves |
-
2019
- 2019-11-08 CN CN201911088112.6A patent/CN110845446B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101838932A (en) * | 2010-04-23 | 2010-09-22 | 浙江理工大学 | Method for improving cationized modification evenness of cotton fabrics |
| CN102669855A (en) * | 2012-05-08 | 2012-09-19 | 傅玉玉 | Waterborne polyurethane coating glove and production process thereof |
| CN105884923A (en) * | 2014-12-24 | 2016-08-24 | 江南大学 | Novel preparation method for modified cationic cassia gum |
| CN207626617U (en) * | 2017-12-08 | 2018-07-20 | 天津双安劳保橡胶有限公司 | A kind of latex insulation gloves |
| CN108360257A (en) * | 2018-02-06 | 2018-08-03 | 恒天海龙（潍坊）新材料有限责任公司 | A kind of preparation method of cation-modified viscose rayon |
| CN108912654A (en) * | 2018-07-20 | 2018-11-30 | 张家港思淇科技有限公司 | A kind of PPU glue and the production technology that dipped gloves are prepared using the PPU glue |
| CN110130125A (en) * | 2019-05-27 | 2019-08-16 | 齐齐哈尔大学 | A method of improving rescutched tow dyeability |
Non-Patent Citations (1)
| Title |
|---|
| 棉针织衬里天然胶乳手套的试制;宋为棋等;《特种橡胶制品》;20030630;第24卷(第03期);第36-38页 * |
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| CN110845446A (en) | 2020-02-28 |
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