CN117264243A - Method for treating glove cores by using aqueous PU foaming composite latex - Google Patents
Method for treating glove cores by using aqueous PU foaming composite latex Download PDFInfo
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- CN117264243A CN117264243A CN202211715977.2A CN202211715977A CN117264243A CN 117264243 A CN117264243 A CN 117264243A CN 202211715977 A CN202211715977 A CN 202211715977A CN 117264243 A CN117264243 A CN 117264243A
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- 238000005187 foaming Methods 0.000 title claims abstract description 79
- 229920000126 latex Polymers 0.000 title claims abstract description 66
- 239000004816 latex Substances 0.000 title claims abstract description 65
- 239000002131 composite material Substances 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 70
- 150000003839 salts Chemical class 0.000 claims abstract description 28
- 239000000701 coagulant Substances 0.000 claims abstract description 21
- 238000007598 dipping method Methods 0.000 claims abstract description 18
- 238000001035 drying Methods 0.000 claims abstract description 17
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 16
- 238000005507 spraying Methods 0.000 claims abstract description 16
- 238000002791 soaking Methods 0.000 claims abstract description 14
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical group OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 30
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 20
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical group [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 20
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 claims description 20
- 239000002994 raw material Substances 0.000 claims description 20
- 238000004513 sizing Methods 0.000 claims description 20
- 239000002562 thickening agent Substances 0.000 claims description 14
- 239000000945 filler Substances 0.000 claims description 13
- 239000004088 foaming agent Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 12
- 150000002825 nitriles Chemical class 0.000 claims description 12
- 239000003381 stabilizer Substances 0.000 claims description 12
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 10
- 229960000583 acetic acid Drugs 0.000 claims description 10
- 239000003945 anionic surfactant Substances 0.000 claims description 10
- 238000011033 desalting Methods 0.000 claims description 10
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical group [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 10
- 239000012362 glacial acetic acid Substances 0.000 claims description 10
- 238000002360 preparation method Methods 0.000 claims description 10
- 239000011780 sodium chloride Substances 0.000 claims description 10
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 10
- 238000005406 washing Methods 0.000 claims description 10
- 229920003063 hydroxymethyl cellulose Polymers 0.000 claims description 9
- 229940031574 hydroxymethyl cellulose Drugs 0.000 claims description 9
- 229920002125 Sokalan® Polymers 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 8
- 239000004584 polyacrylic acid Substances 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- 239000004743 Polypropylene Substances 0.000 claims description 7
- -1 polypropylene Polymers 0.000 claims description 7
- 229920001155 polypropylene Polymers 0.000 claims description 7
- 239000011787 zinc oxide Substances 0.000 claims description 5
- 238000004073 vulcanization Methods 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 3
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 2
- 125000004069 aziridinyl group Chemical group 0.000 claims description 2
- 239000004005 microsphere Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 229920000570 polyether Polymers 0.000 claims description 2
- 238000004381 surface treatment Methods 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000003960 organic solvent Substances 0.000 abstract description 4
- 230000035699 permeability Effects 0.000 abstract description 2
- KVNRLNFWIYMESJ-UHFFFAOYSA-N butyronitrile Chemical compound CCCC#N KVNRLNFWIYMESJ-UHFFFAOYSA-N 0.000 abstract 1
- 238000004528 spin coating Methods 0.000 abstract 1
- 239000002341 toxic gas Substances 0.000 abstract 1
- 239000004814 polyurethane Substances 0.000 description 82
- 229920002635 polyurethane Polymers 0.000 description 81
- NOWKCMXCCJGMRR-UHFFFAOYSA-N Aziridine Chemical compound C1CN1 NOWKCMXCCJGMRR-UHFFFAOYSA-N 0.000 description 8
- 238000000265 homogenisation Methods 0.000 description 8
- 238000007654 immersion Methods 0.000 description 8
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- 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
-
- A—HUMAN NECESSITIES
- A41—WEARING APPAREL
- A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A41D19/00—Gloves
- A41D19/0055—Plastic or rubber gloves
- A41D19/0058—Three-dimensional gloves
-
- 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
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0014—Use of organic additives
- C08J9/0028—Use of organic additives containing nitrogen
-
- 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
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0061—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
-
- 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
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0066—Use of inorganic compounding ingredients
-
- 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
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/30—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by mixing gases into liquid compositions or plastisols, e.g. frothing with air
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
- C08J2375/08—Polyurethanes from polyethers
-
- 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
- C08J2409/00—Characterised by the use of homopolymers or copolymers of conjugated diene hydrocarbons
- C08J2409/02—Copolymers with acrylonitrile
- C08J2409/04—Latex
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Manufacturing & Machinery (AREA)
- Dispersion Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Textile Engineering (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
The invention provides a method for processing a glove core by utilizing aqueous PU foaming composite latex, which comprises the following steps: firstly preparing composite latex, then mechanically foaming the latex, dipping the glove core after preheating treatment into a coagulating agent, dipping the latex, carrying out spin coating treatment, then spraying salt for surface treatment, then drying, soaking, vulcanizing, and finally demolding. Obtaining the water-based PU foaming frosted glove. The aqueous PU foaming glove disclosed by the invention does not contain an organic solvent or DMF, reduces the emission of toxic gas in the production process, and reduces the pollution of a production workshop, thereby improving the operation environment. In addition, the glove is crosslinked with the water-based PU by adding the butyronitrile latex with a certain proportion and the crosslinking agent with a certain proportion, so that the necessary comfort level, softness and air permeability of the glove are obtained, the water resistance, wear resistance and mechanical strength of the water-based PU foaming glove are also provided, and finally, the matte appearance, good slip resistance and grip strength are obtained through salt spraying surface treatment, and meanwhile, the wearing is convenient.
Description
Technical Field
The invention relates to the field of glove production, in particular to a method for processing glove cores by using aqueous PU foaming composite latex.
Background
Polyurethane (PU), english is polyurethane, and the full name is polyurethane. PU is generally classified into aqueous PU and oily PU, and accordingly, in glove production at present, treatment of the glove surface includes treatment with oily PU and treatment with aqueous PU. Among them, gloves treated with oily PU feel comfortable, but have residual organic solvents such as DMF. The existing glove treated by the aqueous PU is made of the aqueous PU non-foaming sizing material, so that the air permeability and the water resistance of the glove are poor, and the grip strength is poor. Therefore, there are disadvantages in practical use.
Disclosure of Invention
The present invention is directed to a method of treating a glove core with an aqueous PU foamed composite latex that addresses one or more of the problems of the prior art described above.
According to the invention, the existing water-based PU formula is changed, so that on one hand, the durability and comfort of the glove can be improved, and on the other hand, the surface of the sizing material is frosted by spraying salt, so that the gripping force of the glove is improved. The method comprises the following specific steps:
s1: the preparation method of the aqueous PU foaming composite latex comprises the following raw materials in parts by weight: 80-120 parts of water-based PU, 10-300 parts of nitrile latex, 0.5-2 parts of cross-linking agent, 1-5 parts of foaming agent, 1-4 parts of stabilizer, 0-4 parts of zinc oxide, 0-2 parts of filler, 1-3 parts of polypropylene wax, 2-6 parts of thickener and 10 parts of water; mixing and stirring the raw materials, and mechanically foaming to prepare the water-based PU foaming composite latex for later use; s2: sleeving the glove core on the hand mould, and performing preheating treatment; s3: dipping the glove core which is preheated by the S2 into a coagulating agent; s4: dipping the glove core subjected to the dipping treatment in the aqueous PU foaming composite latex; s5: salt spraying treatment is carried out on the surface of the glove core treated by the step S4, and frosting is formed on the surface of the sizing material which is not completely solidified; s6: putting the glove cores treated by the step S5 into a baking oven for baking, and then washing and desalting by using water; s7: putting the glove cores treated by the step S6 into an oven for drying and vulcanizing; s8: and (5) demolding to obtain the water-based PU foaming frosted glove.
In some embodiments, in the S1, the aqueous PU is a polyether aqueous PU; the cross-linking agent is aziridine; the thickening agent is polyacrylic acid or water-based PU association thickening agent or hydroxymethyl cellulose or any mixture of the polyacrylic acid, the water-based PU association thickening agent and the hydroxymethyl cellulose.
In some embodiments, in S1, the foaming agent is sodium dodecyl benzene sulfonate, and the foaming multiple is 1.1 to 1.3.
In some embodiments, in S1, the stabilizer is an anionic surfactant.
In some embodiments, in S1, the filler is hollow glass microsphere, and the performance index is: particle diameter 20-80 μm, wall thickness 5-10 μm, density 0.1-0.14 g/cm3, thermal conductivity 0.05-0.08W/m.K.
In some embodiments, in S2, the preheating treatment is specifically performed by placing the glove core into an oven and baking at 50-70 ℃ for 10-15 min.
In some embodiments, in S3, the coagulant is a methanol solution containing 1 to 5% glacial acetic acid or 1 to 2% calcium nitrate, and the immersion homogenization time is 60 to 90S.
In some embodiments, the S4 glove cores are impregnated with the aqueous PU foamed composite latex for a time period of 15-25 seconds.
In some embodiments, in S5, the salt used in the salt spraying treatment is 80-100 mesh, and the salt is sodium chloride.
In some embodiments, in S6, the drying temperature is 40-80 ℃, the soaking temperature is 20-30 ℃, and the soaking time is 15-20 min.
In some embodiments, in S7, the high temperature vulcanization is at a temperature of 80 to 110 ℃ and the high temperature vulcanization is for a time of 1 to 2 hours.
The invention has the beneficial effects that: the water-based PU foaming glove does not use toxic organic solvents in the manufacturing process, so that the water-based PU foaming glove has no organic volatilization, no pollution and no toxic DMF. The invention properly adds the nitrile latex into the water PU, strengthens the deficiency of the rubber strength of the water PU resin, adds the cross-linking agent into the latex, keeps the cross-linking agent in proper proportion, is used for cross-linking active groups of two latices (the water PU resin and the nitrile latex), such as carboxyl and the like, and effectively enhances the mechanical strength and the water resistance of products. Proved by warm water soaking and rubbing, the addition of the cross-linking agent can effectively improve the strength and the water resistance of the product. In addition, the water-based PU glove is frosted in a salt spraying mode, so that the prepared water-based PU glove has frosted matte rough surfaces, the grasping force of the water-based PU glove can be enhanced, and the water-based PU glove has better grasping performance.
Detailed Description
The technical scheme of the present invention will be clearly and completely described in the following examples.
Example 1:
the method comprises the following steps:
s1: the preparation method of the aqueous PU foaming composite latex comprises the following raw materials in parts by weight: 80 parts of water-based PU, 10 parts of nitrile latex, 1 part of aziridine crosslinking agent, 1 part of sodium dodecyl benzene sulfonate (foaming multiple 1.1) serving as a foaming agent, 1.5 parts of stabilizer anionic surfactant, 1 part of zinc oxide, 1 part of filler, 10 parts of water, and 8 parts of 3.5% hydroxymethyl cellulose and polyacrylic acid. Mixing and stirring the raw materials, and mechanically foaming to obtain the aqueous PU foaming composite latex;
s2: sleeving the glove core on a hand mould, putting the glove core into an oven, baking for 15min at 50 ℃, and performing preheating treatment;
s3: taking the glove core of the step S2 to impregnate with the coagulant, wherein the impregnating and homogenizing time is 60S; the coagulant is methanol solution containing 1-5% glacial acetic acid or 1-2% calcium nitrate;
s4: dipping the glove core in the step S3 into the aqueous PU foaming composite latex, and uniformly sizing for 20S to obtain a dipped glove core;
s5: spraying salt on the surface of the glove core in the step S4 to form frosted surface of the sizing material which is not completely solidified, wherein the salt is sodium chloride with the mesh of 80-100;
s6: putting the glove cores subjected to surface treatment in the step S5 into an oven at 80 ℃ for drying for 40min, and then soaking, washing and desalting with water at 25 ℃;
s7: taking the glove cores obtained in the step S6, and putting the glove cores into a 100 ℃ oven for drying and vulcanizing for 60 minutes;
s8: and (5) demolding to obtain the water-based PU foaming frosted glove.
Example 2
The method comprises the following steps:
s1: the preparation method of the aqueous PU foaming composite latex comprises the following raw materials in parts by weight: 100 parts of water-based PU, 20 parts of nitrile latex, 0.5 part of aziridine crosslinking agent, 2 parts of sodium dodecyl benzene sulfonate (foaming multiple 1.2) serving as a foaming agent, 2 parts of anionic surfactant serving as a stabilizer, 0.5 part of filler, 1 part of polypropylene wax, 10 parts of water, 3.5% of hydroxymethyl cellulose and 9 parts of polyacrylic acid. The raw materials are mixed and stirred, and are mechanically foamed to prepare the aqueous PU foaming composite latex.
S2: sleeving the glove core on a hand mould, putting the glove core into an oven, baking for 15min at 55 ℃, and performing preheating treatment;
s3: taking the glove cores of the S2 to be immersed with the coagulant, wherein the immersion homogenization time is 65S; the coagulant is methanol solution containing 1-5% glacial acetic acid or 1-2% calcium nitrate;
s4: dipping the glove core of the S3 into the aqueous PU foaming composite latex, and uniformly sizing for 20S to obtain a dipped glove core;
s5: salt spraying treatment is carried out on the surface of the glove core of the S4, frosting is formed on the surface of the sizing material which is not completely solidified, and sodium chloride with 80-100 meshes is used as salt;
s6: putting the glove cores subjected to the S5 surface treatment into a 70 ℃ oven for drying for 50min, and then soaking, washing and desalting with water at 25 ℃;
s7: taking the glove cores of the S6, and putting the glove cores into a baking oven at 110 ℃ for baking and vulcanizing for 60 minutes;
s8: and (5) demolding to obtain the water-based PU foaming frosted glove.
Example 3
The method comprises the following steps:
s1: the preparation method of the aqueous PU foaming composite latex comprises the following raw materials in parts by weight: 100 parts of water-based PU, 15 parts of nitrile latex, 1 part of aziridine crosslinking agent, 1.5 parts of sodium dodecyl benzene sulfonate (foaming multiple 1.2) serving as a foaming agent, 2 parts of anionic surfactant serving as a stabilizing agent, 2 parts of zinc oxide, 1 part of filler and 9 parts of water-based PU associative thickener. Mixing and stirring the raw materials, and mechanically foaming to obtain the aqueous PU foaming composite latex;
s2: sleeving the glove core on a hand mould, putting the glove core into an oven, baking for 15min at 60 ℃, and performing preheating treatment;
s3: taking the glove cores of the S2 to be immersed with the coagulant, wherein the immersion homogenization time is 80S; the coagulant is methanol solution containing 1-5% glacial acetic acid or 1-2% calcium nitrate;
s4: dipping the glove core of the S3 into the aqueous PU foaming composite latex, and uniformly sizing for 20S to obtain a dipped glove core;
s5: salt spraying treatment is carried out on the surface of the glove core of the S4, frosting is formed on the surface of the sizing material which is not completely solidified, and sodium chloride with 80-100 meshes is used as salt;
s6: putting the glove cores subjected to the S5 surface treatment into an oven at 80 ℃ for drying for 40min, and then soaking, washing and desalting with water at 25 ℃;
s7: taking the glove cores of the S6, and putting the glove cores into a baking oven at 900 ℃ for baking and vulcanizing for 60 minutes;
s8: and (5) demolding to obtain the water-based PU foaming frosted glove.
Example 4
The method comprises the following steps:
s1: the preparation method of the aqueous PU foaming composite latex comprises the following raw materials in parts by weight: 120 parts of water-based PU, 25 parts of nitrile latex, 2.5 parts of aziridine crosslinking agent, 3 parts of sodium dodecyl benzene sulfonate serving as a foaming agent (foaming multiple 1.2), 3 parts of anionic surfactant serving as a stabilizer, 1.5 parts of filler, 2 parts of polypropylene wax, 3.5% hydroxymethyl cellulose and 9 parts of water-based PU associative thickener. Mixing and stirring the raw materials, and mechanically foaming to obtain the aqueous PU foaming composite latex;
s2: sleeving the glove core on a hand mould, putting the glove core into an oven, baking for 15min at 60 ℃, and performing preheating treatment;
s3: taking the glove cores of the S2 to be immersed with the coagulant, wherein the immersion homogenization time is 60S; the coagulant is methanol solution containing 1-5% glacial acetic acid or 1-2% calcium nitrate;
s4: dipping the glove core of the S3 into the aqueous PU foaming composite latex, and uniformly sizing for 20S to obtain a dipped glove core;
s5: salt spraying treatment is carried out on the surface of the glove core of the S4, frosting is formed on the surface of the sizing material which is not completely solidified, and sodium chloride with 80-100 meshes is used as salt;
s6: putting the glove cores subjected to the S5 surface treatment into an oven at 80 ℃ for drying for 40min, and then soaking, washing and desalting with water at 25 ℃;
s7: taking the glove cores of the S6, and putting the glove cores into an oven at 800 ℃ for drying and vulcanizing for 60 minutes;
s8: and (5) demolding to obtain the water-based PU foaming frosted glove.
Example 5
The method comprises the following steps:
s1: the preparation method of the aqueous PU foaming composite latex comprises the following raw materials in parts by weight: 120 parts of water-based PU, 30 parts of nitrile latex, 3 parts of aziridine crosslinking agent, 1 part of ZnO, 4 parts of sodium dodecyl benzene sulfonate (foaming multiple 1.3) serving as a foaming agent, 4 parts of stabilizer anionic surfactant, 1 part of filler, 3 parts of polypropylene wax, 10 parts of water, 2% hydroxymethyl cellulose and 10 parts of water-based PU association thickener. Mixing and stirring the raw materials, and mechanically foaming to obtain the aqueous PU foaming composite latex;
s2: sleeving the glove core on a hand mould, putting the glove core into an oven, baking for 15min at 65 ℃, and performing preheating treatment;
s3: taking the glove cores of the S2 to be immersed with the coagulant, wherein the immersion homogenization time is 50S; the coagulant is methanol solution containing 1-5% glacial acetic acid or 1-2% calcium nitrate;
s4: dipping the glove core of the S3 into the aqueous PU foaming composite latex, and uniformly sizing for 20S to obtain a dipped glove core;
s5: salt spraying treatment is carried out on the surface of the glove core of the S4, frosting is formed on the surface of the sizing material which is not completely solidified, and sodium chloride with 80-100 meshes is used as salt;
s6: putting the glove cores subjected to the S5 surface treatment into a 70 ℃ oven for drying for 40min, and then soaking, washing and desalting with 25 ℃ water;
s7: taking the glove cores of the S6, and putting the glove cores into a baking oven at 100 ℃ for baking and vulcanizing for 60 minutes;
s8: and (5) demolding to obtain the water-based PU foaming frosted glove.
Example 6
The method comprises the following steps:
s1: the preparation method of the aqueous PU foaming composite latex comprises the following raw materials in percentage by mass: 80 parts of water-based PU, 20 parts of nitrile latex, 0.5 part of aziridine crosslinking agent, 1.5 parts of sodium dodecyl benzene sulfonate (foaming multiple 1.2) serving as a foaming agent, 2 parts of anionic surfactant serving as a stabilizer, 0.5 part of filler and 8 parts of polyacrylic acid and water-based PU associative thickener. Mixing and stirring the raw materials, and mechanically foaming to obtain the aqueous PU foaming composite latex;
s2: sleeving the glove core on a hand mould, putting the glove core into an oven, baking for 15min at 70 ℃, and performing preheating treatment;
s3: taking the glove cores of the S2 to be immersed with the coagulant, wherein the immersion homogenization time is 60S; the coagulant is methanol solution containing 1-5% glacial acetic acid or 1-2% calcium nitrate;
s4: dipping the glove core of the S3 into the aqueous PU foaming composite latex, and uniformly sizing for 20S to obtain a dipped glove core;
s5: salt spraying treatment is carried out on the surface of the glove core of the S4, frosting is formed on the surface of the sizing material which is not completely solidified, and sodium chloride with 80-100 meshes is used as salt;
s6: putting the glove cores subjected to the S5 surface treatment into a 70 ℃ oven for drying for 40min, and then soaking, washing and desalting with 25 ℃ water;
s7: taking the glove cores of the S6, and putting the glove cores into an oven at 800 ℃ for drying and vulcanizing for 60 minutes;
s8: and (5) demolding to obtain the water-based PU foaming frosted glove.
Example 7
The method comprises the following steps:
s1: the preparation method of the aqueous PU foaming composite latex comprises the following raw materials in percentage by mass: 100 parts of water-based PU, 20 parts of nitrile latex, 2 parts of aziridine crosslinking agent, 2 parts of foaming agent sodium dodecyl benzene sulfonate (foaming multiple 1.2), 2 parts of stabilizer anionic surfactant, 0.5 part of filler, 10 parts of water, and 9 parts of 2% hydroxymethyl cellulose and polyacrylic thickener. The raw materials are mixed and stirred, and are mechanically foamed to prepare the aqueous PU foaming composite latex.
S2: sleeving the glove core on a hand mould, putting the glove core into an oven, baking for 15min at 70 ℃, and performing preheating treatment;
s3: taking the glove cores of the S2 to be immersed with the coagulant, wherein the immersion homogenization time is 80S; the coagulant is methanol solution containing 1-5% glacial acetic acid or 1-2% calcium nitrate;
s4: dipping the glove core of the S3 into the aqueous PU foaming composite latex, and uniformly sizing for 20S to obtain a dipped glove core;
s5: salt spraying treatment is carried out on the surface of the glove core of the S4, frosting is formed on the surface of the sizing material which is not completely solidified, and sodium chloride with 80-100 meshes is used as salt;
s6: putting the glove cores subjected to the S5 surface treatment into an oven at 80 ℃ for drying for 40min, and then soaking, washing and desalting with water at 25 ℃;
s7: taking the glove cores of the S6, and putting the glove cores into a baking oven at 90 ℃ for baking and vulcanizing for 60 minutes;
s8: and (5) demolding to obtain the water-based PU foaming frosted glove.
Example 8
The method comprises the following steps:
s1: the preparation method of the aqueous PU foaming composite latex comprises the following raw materials in percentage by mass: 100 parts of water-based PU; 30 parts of nitrile latex, 1 part of aziridine crosslinking agent, 3 parts of sodium dodecyl benzene sulfonate (foaming multiple 1.1) serving as a foaming agent, 2 parts of stabilizer anionic surfactant, 0.5 part of filler, 2 parts of polypropylene wax, 10 parts of water and 9 parts of polyacrylic acid and water-based PU associative thickener. Mixing and stirring the raw materials, and mechanically foaming to obtain the aqueous PU foaming composite latex;
s2: sleeving the glove core on a hand mould, putting the glove core into an oven, baking for 15min at 70 ℃, and performing preheating treatment;
s3: taking the glove cores of the S2 to be immersed with the coagulant, wherein the immersion homogenization time is 60S; the coagulant is methanol solution containing 1-5% glacial acetic acid or 1-2% calcium nitrate;
s4: dipping the glove core of the S3 into the aqueous PU foaming composite latex, and uniformly sizing for 20S to obtain a dipped glove core;
s5: salt spraying treatment is carried out on the surface of the glove core of the S4, frosting is formed on the surface of the sizing material which is not completely solidified, and sodium chloride with 80-100 meshes is used as salt;
s6: putting the glove cores subjected to the S5 surface treatment into a 70 ℃ oven for drying for 40min, and then soaking, washing and desalting with 25 ℃ water;
s7: taking the glove cores of the S6, and putting the glove cores into an oven at 80 ℃ for drying and vulcanizing for 60min;
s8: and (5) demolding to obtain the water-based PU foaming sand glove.
The performance indexes of the different embodiments are analyzed through experiments, and the specific grades of each performance are shown in the following table:
| tearing off | Puncture needle | Wear-resistant | |
| Example 1 | L2 | L1 | L3 |
| Example 2 | L2 | L1 | L3 |
| Example 3 | L3 | L1 | L3 |
| Example 4 | L2 | L1 | L3 |
| Example 5 | L3 | L1 | L3 |
| Example 6 | L2 | L1 | L3 |
| Example 7 | L2 | L1 | L3 |
| Example 8 | L2 | L1 | L3 |
According to the experimental data, visual feeling and hand feeling, the water-based PU foaming frosted glove has good grasping power and comfort, wherein the improvement of the proportion of glass bead filler and the increase of viscosity have certain influence on the softness and wear resistance of the glove. In addition, the foam quantity control and the use of the polypropylene wax can give consideration to the hand feeling and the light weight of the glove to a certain extent, and fully highlight the advantages of comfortable wearing and flexible use of the water-based PU foaming frosted glove. Meanwhile, the water-based PU has the characteristics of environmental protection, namely water solubility, does not contain organic solvents, is not inflammable and explosive, effectively reduces environmental pollution and effectively reduces occupational hazards. Has wide market application prospect.
The above description is only of a preferred form of the invention, it being understood that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the inventive concept, which shall be regarded as being within the scope of the invention.
Claims (11)
1. A method for processing a glove core by using aqueous PU foaming composite latex, which is characterized by comprising the following steps:
s1: the preparation method of the aqueous PU foaming composite latex comprises the following raw materials in parts by weight: 80-120 parts of water-based PU, 10-300 parts of nitrile latex, 0.5-2 parts of cross-linking agent, 1-5 parts of foaming agent, 1-4 parts of stabilizer, 0-4 parts of zinc oxide, 0-2 parts of filler, 1-3 parts of polypropylene wax, 2-6 parts of thickener and 10 parts of water; mixing and stirring the raw materials, and mechanically foaming to prepare the water-based PU foaming composite latex for later use;
s2: sleeving the glove core on the hand mould, and performing preheating treatment;
s3: dipping the glove core which is preheated by the S2 into a coagulating agent;
s4: dipping the glove core subjected to the dipping treatment in the aqueous PU foaming composite latex;
s5: salt spraying treatment is carried out on the surface of the glove core treated by the step S4, and frosting is formed on the surface of the sizing material which is not completely solidified;
s6: putting the glove cores treated by the step S5 into a baking oven for baking, and then washing and desalting by using water;
s7: putting the glove cores treated by the step S6 into an oven for drying and vulcanizing;
s8: and (5) demolding to obtain the water-based PU foaming frosted glove.
2. The method for treating a glove core with an aqueous PU foamed composite latex according to claim 1, wherein in S1, the aqueous PU is a polyether aqueous PU; the cross-linking agent is aziridine; the thickening agent is polyacrylic acid or water-based PU association thickening agent or hydroxymethyl cellulose or any mixture of the polyacrylic acid, the water-based PU association thickening agent and the hydroxymethyl cellulose.
3. The method for treating a glove core by using the aqueous PU foaming composite latex according to claim 1, wherein in the S1, the foaming agent is sodium dodecyl benzene sulfonate, and the foaming multiple is 1.1-1.3.
4. The method for treating a glove core with an aqueous PU foamed composite latex according to claim 1, wherein in S1, the stabilizer is an anionic surfactant.
5. The method for processing glove cores by using the aqueous PU foamed composite latex according to claim 1, wherein in S1, the filler is hollow glass microspheres, and the performance indexes are as follows: particle diameter 20-80 μm, wall thickness 5-10 μm, density 0.1-0.14 g/cm3, thermal conductivity 0.05-0.08W/m.K.
6. The method for treating a glove core with an aqueous PU foamed composite latex according to claim 1, wherein in S2, the preheating treatment is specifically performed by placing the glove core into an oven and baking the glove core at 50-70 ℃ for 10-15 min.
7. The method for treating a glove core by using the aqueous PU foaming composite latex according to claim 1, wherein in the step S3, the coagulating agent is a methanol solution containing 1-5% glacial acetic acid or 1-2% calcium nitrate, and the dipping and homogenizing time is 60-90S.
8. The method for treating a glove core by using the aqueous PU foaming composite latex according to claim 1, wherein the dipping time of the glove core in the aqueous PU foaming composite latex is 15-25S.
9. The method for treating a glove core by using the aqueous PU foaming composite latex according to claim 1, wherein in the step S5, the salt used in the salt spraying treatment is 80-100 meshes, and the salt is sodium chloride.
10. The method for treating a glove core by using the aqueous PU foaming composite latex according to claim 1, wherein in the S6, the drying temperature is 40-80 ℃, the soaking temperature is 20-30 ℃, and the soaking time is 15-20 min.
11. The method for treating a glove core with an aqueous PU foaming composite latex according to claim 1, wherein in S7, the high temperature vulcanization temperature is 80-110 ℃, and the high temperature vulcanization time is 1-2 hours.
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