CN114891292A - Light oil-resistant anti-skid foamed sole and preparation method thereof - Google Patents
Light oil-resistant anti-skid foamed sole and preparation method thereof Download PDFInfo
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- 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
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
- C08J9/102—Azo-compounds
- C08J9/103—Azodicarbonamide
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/02—Soles; Sole-and-heel integral units characterised by the material
- A43B13/04—Plastics, rubber or vulcanised fibre
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- 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
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- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/0066—Use of inorganic compounding ingredients
- C08J9/0071—Nanosized fillers, i.e. having at least one dimension below 100 nanometers
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- C08J9/0085—Use of fibrous compounding ingredients
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- C08J2205/00—Foams characterised by their properties
- C08J2205/04—Foams characterised by their properties characterised by the foam pores
- C08J2205/052—Closed cells, i.e. more than 50% of the pores are closed
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- 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
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- C08J2351/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
- C08J2351/06—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
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- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—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
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Abstract
A light oil-resistant anti-skid foamed sole and a preparation method thereof are disclosed, wherein the light oil-resistant anti-skid foamed sole comprises the following raw materials: the foaming agent comprises an ethylene-vinyl acetate copolymer, maleic anhydride grafted EVA, nitrile rubber, an SBS thermoplastic elastomer, a foaming agent, an accelerator, a crosslinking agent, a nano filler, zinc stearate and naphthenic oil, wherein the nano filler is composed of attapulgite, asbestos fiber and mica powder according to the mass ratio of 1:2-3: 1.5-2.2.
Description
Technical Field
The invention belongs to the field of preparation of foamed soles, and particularly relates to a light oil-resistant anti-skid foamed sole and a preparation method thereof.
Background
At present, people no longer consider the aesthetic measure of shoes alone when buying shoes, and simultaneously also consider the security of shoes emphatically, and especially antiskid performance is especially important, and catering trade staff walks inside and outside the kitchen for a long time, and the subaerial liquid medium such as many water oil that often remains in the kitchen has reduced the frictional force between sole and the ground, and frictional force can be said to be almost zero, and at this moment, people's slip very easily takes place the accident, and the potential safety hazard is big.
The anti-slip oil-resistant shoes on the market at present are not only complex in manufacturing process, but also several times as expensive as common shoes, and are very limited in applicable environment. In addition, in order to be portable during work, the density of the sole is often required to be low, so that the weight of the shoe is reduced, and the shoe is convenient to move.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a light oil-resistant anti-skid foamed sole, and also aims to provide a method for preparing the foamed sole.
The invention adopts the following technical scheme:
a light oil-resistant anti-skid foamed sole comprises the following raw materials in parts by weight:
the nano filler is composed of attapulgite, asbestos fiber and mica powder according to the mass ratio of 1:2-3: 1.5-2.2.
Further, the accelerator consists of fatty alcohol-polyoxyethylene ether sodium sulfate, stearic acid and dimethyl siloxane according to the mass ratio of 0.27-0.36:1: 1.27-1.49.
Further, the foaming agent is azodicarbonamide.
Further, the cross-linking agent is a cross-linking agent BIBP.
Further, the acrylonitrile-butadiene rubber contains 18-24% of acrylonitrile.
A preparation method of light oil-resistant anti-slip rubber foamed soles comprises the following steps:
firstly, placing the raw materials except the foaming agent, the accelerant and the cross-linking agent into an internal mixer for internal mixing, discharging rubber when the internal mixing temperature reaches 112-115 ℃, and placing the internal mixer at room temperature for more than 24 hours;
mixing the internally mixed mixture on a double-roller open mill, adding accurately weighed foaming agent, accelerator and crosslinking agent, uniformly mixing, and performing sheet-shaped discharge to obtain a foamed sheet;
and step three, cutting the foamed sheet into a sole shape, placing the sole shape into a sole mold, and foaming and molding at the foaming temperature of 145-155 ℃ to obtain the light oil-resistant anti-slip foamed sole.
Further, in the first step, the banburying process specifically includes: firstly, mixing ethylene-vinyl acetate copolymer, maleic anhydride grafted EVA, SBS thermoplastic elastomer and nitrile rubber, and banburying in a banbury mixer for 15 min; continuously adding the raw materials except the foaming agent, the accelerant and the cross-linking agent, and mixing and banburying for 10 min; then adjusting the banburying temperature to 90 ℃, keeping for 5min and then turning for one time; when the banburying temperature is raised to 98 ℃, performing secondary material turning; when the banburying temperature is increased to 103 ℃, turning materials for three times; stirring for four times when the banburying temperature is increased to 108 ℃; and (4) after the banburying temperature is raised to 112-115 ℃, performing five times of material turning, banburying for 2min, discharging rubber, and standing at room temperature for more than 24 h.
Further, in the second step, the EVA foaming sheet is thinned at least twice in a two-roll open mill and is taken out with the thickness of 2-3 mm.
As can be seen from the above description of the present invention, compared with the prior art, the beneficial effects of the present invention are:
firstly, the application limits that ethylene-vinyl acetate copolymer, nitrile rubber and SBS thermoplastic elastomer are mutually mixed, and maleic anhydride grafted EVA is added to increase compatibility and adhesion among raw materials, so that oil resistance and skid resistance of the prepared foamed sole are improved, and the overall mechanical property of the foamed sole is ensured; the mica powder is added as a part of filler, has strong adhesive force, plays a role of ground grasping, is matched with the nitrile rubber, improves the oil resistance and the anti-skid property, and ensures that the prepared sole has the anti-skid coefficient of more than 0.32 on an oil pollution interface;
secondly, the shrinkage rate of the foamed sole during molding is large due to the addition of the nitrile rubber, and the shrinkage rate of the foamed sole during molding can be effectively reduced by adding the SBS thermoplastic elastomer and matching with the attapulgite powder and the asbestos fiber which are used as fillers, so that the overall mechanical property of the prepared foamed sole is ensured; the asbestos fiber is a good light material and is matched with the SBS thermoplastic elastomer, so that the overall density of the foamed sole can be effectively reduced, the quality of the foamed sole is reduced, and the use requirement is met;
and thirdly, the compounding of the sodium alcohol ether sulphate, the stearic acid and the dimethyl siloxane is limited to be used as an accelerant, and the accelerant is matched with a foaming agent, so that the vulcanization speed and the foaming speed of the rubber compound are approximately synchronous, a uniform closed cell structure is obtained, the formed closed cell structures are mutually independent, and air bubbles are not communicated, so that the prepared foamed sole has better mechanical properties.
Detailed Description
The invention is further described below by means of specific embodiments.
A light oil-resistant anti-skid foamed sole comprises the following raw materials in parts by weight:
wherein the nano-filler is composed of attapulgite, asbestos fiber and mica powder according to the mass ratio of 1:2-3: 1.5-2.2; the accelerator consists of fatty alcohol-polyoxyethylene ether sodium sulfate, stearic acid and dimethyl siloxane according to the mass ratio of 0.27-0.36:1: 1.27-1.49; the foaming agent is azodicarbonamide; the cross-linking agent is a cross-linking agent BIBP; the acrylonitrile-butadiene rubber contains 18-24% of acrylonitrile.
The preparation method comprises the following steps:
firstly, mixing ethylene-vinyl acetate copolymer, maleic anhydride grafted EVA, SBS thermoplastic elastomer and nitrile rubber, and banburying in a banbury mixer for 15 min; continuously adding the raw materials except the foaming agent, the accelerant and the cross-linking agent, and mixing and banburying for 10 min; then adjusting the banburying temperature to 90 ℃, keeping for 5min and then turning for one time; when the banburying temperature is raised to 98 ℃, performing secondary material turning; when the banburying temperature is increased to 103 ℃, turning materials for three times; stirring for four times when the banburying temperature is raised to 108 ℃; when the banburying temperature is raised to 112-;
mixing the internally mixed mixture on a double-roller open mill, adding accurately weighed foaming agent, accelerator and crosslinking agent, uniformly mixing, and performing sheet-shaped discharge to obtain a foamed sheet;
and step three, cutting the foamed sheet into a sole shape, placing the sole shape into a sole mold, and foaming and molding at the foaming temperature of 145-155 ℃ to obtain the light oil-resistant anti-slip foamed sole.
Wherein, the EVA foaming sheet is thinned at least twice in a double-roller open mill and is taken out with the thickness of 2-3 mm.
Example 1
A light oil-resistant anti-skid foamed sole comprises the following raw materials in parts by weight:
wherein the nano filler is composed of attapulgite, asbestos fiber and mica powder according to the mass ratio of 1:2: 1.5; the accelerator consists of fatty alcohol-polyoxyethylene ether sodium sulfate, stearic acid and dimethyl siloxane according to the mass ratio of 0.27:1: 1.49; the acrylonitrile-butadiene rubber contains 18-24% of acrylonitrile.
The preparation method comprises the following steps:
firstly, mixing ethylene-vinyl acetate copolymer, maleic anhydride grafted EVA, SBS thermoplastic elastomer and nitrile rubber, and banburying in a banbury mixer for 15 min; continuously adding the raw materials except the foaming agent, the accelerant and the cross-linking agent, and mixing and banburying for 10 min; then adjusting the banburying temperature to 90 ℃, keeping for 5min and then turning for one time; when the banburying temperature is raised to 98 ℃, performing secondary material turning; when the banburying temperature is increased to 103 ℃, turning materials for three times; stirring for four times when the banburying temperature is raised to 108 ℃; after the banburying temperature is raised to 112 ℃, the materials are turned over for five times, banburying is carried out for 2min, the rubber is discharged, and the mixture is placed at room temperature for more than 24 h;
mixing the internally mixed mixture on a double-roller open mill, adding accurately weighed foaming agent, accelerator and crosslinking agent, uniformly mixing, and performing sheet-shaped discharge to obtain a foamed sheet;
and step three, cutting the foamed sheet into a sole shape, placing the sole shape into a sole mold, and foaming and molding at the foaming temperature of 145 ℃ to obtain the light oil-resistant anti-skid foamed sole.
The EVA foamed sheet is thinned at least twice in a double-roll open mill and is taken out with the thickness of 2 mm.
Example 2
A light oil-resistant anti-skid foamed sole comprises the following raw materials in parts by weight:
wherein the nano filler is composed of attapulgite, asbestos fiber and mica powder according to the mass ratio of 1:3: 2.2; the accelerator consists of fatty alcohol-polyoxyethylene ether sodium sulfate, stearic acid and dimethyl siloxane according to the mass ratio of 0.36:1: 1.27; the acrylonitrile-butadiene rubber contains 18-24% of acrylonitrile.
The preparation method comprises the following steps:
firstly, mixing ethylene-vinyl acetate copolymer, maleic anhydride grafted EVA, SBS thermoplastic elastomer and nitrile rubber, and banburying in a banbury mixer for 15 min; continuously adding the raw materials except the foaming agent, the accelerant and the cross-linking agent, and mixing and banburying for 10 min; then adjusting the banburying temperature to 90 ℃, keeping for 5min and then turning for one time; when the banburying temperature is raised to 98 ℃, performing secondary material turning; when the banburying temperature is increased to 103 ℃, turning materials for three times; stirring for four times when the banburying temperature is increased to 108 ℃; after the banburying temperature is raised to 115 ℃, the materials are turned for five times, banburying is carried out for 2min, the rubber is discharged, and the mixture is placed at room temperature for more than 24 h;
mixing the internally mixed mixture on a double-roller open mill, adding accurately weighed foaming agent, accelerator and crosslinking agent, uniformly mixing, and performing sheet-shaped discharge to obtain a foamed sheet;
and step three, cutting the foaming sheet into a sole shape, placing the sole shape into a sole mold, and foaming and molding at the foaming temperature of 155 ℃ to obtain the light oil-resistant anti-slip foaming sole.
The EVA foamed sheet is thinned at least twice in a double-roll open mill and is taken out with the thickness of 3 mm.
Example 3
A light oil-resistant anti-skid foamed sole comprises the following raw materials in parts by weight:
wherein the nano filler is composed of attapulgite, asbestos fiber and mica powder according to the mass ratio of 1:2.6: 1.8; the accelerator consists of fatty alcohol-polyoxyethylene ether sodium sulfate, stearic acid and dimethyl siloxane according to the mass ratio of 0.32:1: 1.35; the acrylonitrile content in the nitrile rubber is 18-24%.
The preparation method comprises the following steps:
firstly, mixing ethylene-vinyl acetate copolymer, maleic anhydride grafted EVA, SBS thermoplastic elastomer and nitrile rubber, and banburying in a banbury mixer for 15 min; continuously adding the raw materials except the foaming agent, the accelerant and the cross-linking agent, and mixing and banburying for 10 min; then adjusting the banburying temperature to 90 ℃, keeping for 5min and then turning for one time; when the banburying temperature is raised to 98 ℃, performing secondary material turning; when the banburying temperature is increased to 103 ℃, turning materials for three times; stirring for four times when the banburying temperature is increased to 108 ℃; after the banburying temperature is raised to 113 ℃, the materials are turned over for five times, banburying is carried out for 2min, the rubber is discharged, and the mixture is placed at room temperature for more than 24 h;
mixing the internally mixed mixture on a double-roller open mill, adding accurately weighed foaming agent, accelerator and crosslinking agent, uniformly mixing, and performing sheet-shaped discharge to obtain a foamed sheet;
and step three, cutting the foaming sheet into a sole shape, placing the sole shape into a sole mold, and foaming and molding at the foaming temperature of 150 ℃ to obtain the light oil-resistant anti-skid foaming sole.
The EVA foamed sheet is thinned at least twice in a double-roll open mill and is taken out with the thickness of 2 mm.
The commercially available oil-resistant and non-slip foamed shoe soles as comparative example 1 and the commercially available oil-resistant and non-slip rubber shoe soles as comparative example 2 were subjected to respective tests with the oil-resistant and non-slip foamed shoe soles prepared in examples 1 to 3, and the following data were obtained:
wherein the oil resistance test is according to ISO 20344: 2011 testing; static slip factor as per F1677: 2005, dynamic slip coefficient according to ISO 13287: 2012 test SRB model (Glycerol solution dropped on the Steel plate)
Table 1 table of test data of each example
| Item | Example 1 | Example 2 | Example 3 | Comparative example 1 | Comparative example 2 |
| Density (g/cm) 3 ) | 0.76 | 0.75 | 0.74 | 0.91 | 1.19 |
| Oil resistance test (%) | 4.7 | 9.5 | 3.3 | 11.0 | 9.8 |
| Static non-slip coefficient (high oil) | 0.58 | 0.57 | 0.59 | 0.42 | 0.47 |
| Static non-slip coefficient (high oil and water) | 0.58 | 0.56 | 0.58 | 0.40 | 0.44 |
| Dynamic non-slip coefficient (heel) | 0.33 | 0.34 | 0.35 | 0.15 | 0.18 |
| Dynamic non-slip coefficient (smooth) | 0.34 | 0.35 | 0.37 | 0.21 | 0.23 |
According to the tables, the oil resistance and the skid resistance of the light oil-resistant skid-proof foamed sole prepared by the method are slightly higher than those of oil-resistant skid-proof soles sold in the prior art, the weight of the light oil-resistant skid-proof foamed sole is far smaller than that of the oil-resistant skid-proof soles sold in the prior art, and the light oil-resistant skid-proof foamed sole can be worn and used in places with higher requirements on the oil-resistant skid-proof performance, such as places with oil accumulation or oil splashing on the ground, such as ships, petrochemical plants, automobile repair plants, grease factories and the like; and the manufacturing process is simple, the industrial production is easy, and the market prospect is good.
The application limits the mutual mixing of the ethylene-vinyl acetate copolymer, the nitrile rubber and the SBS thermoplastic elastomer, and adds the maleic anhydride grafted EVA to increase the compatibility and the adhesion among the raw materials so as to improve the oil resistance and the skid resistance of the prepared foamed sole and ensure the overall mechanical property of the foamed sole; the mica powder is added as a part of filler, has strong adhesive force, plays a role of ground grasping, is matched with the nitrile rubber, improves the oil resistance and the anti-skid property, and ensures that the prepared sole has the anti-skid coefficient of more than 0.32 on an oil pollution interface.
The above description is only a preferred embodiment of the present invention, and therefore should not be taken as limiting the scope of the invention, which is defined by the appended claims and their equivalents and modifications within the scope of the description.
Claims (8)
1. The utility model provides a light resistant oily antiskid foaming sole which characterized in that: the feed comprises the following raw materials in parts by weight:
the nano filler is composed of attapulgite, asbestos fiber and mica powder according to the mass ratio of 1:2-3: 1.5-2.2.
2. The lightweight oil-resistant anti-slip foamed shoe sole according to claim 1, wherein: the accelerator consists of fatty alcohol-polyoxyethylene ether sodium sulfate, stearic acid and dimethyl siloxane according to the mass ratio of 0.27-0.36:1: 1.27-1.49.
3. The lightweight oil-resistant anti-slip foamed shoe sole according to claim 1, wherein: the foaming agent is azodicarbonamide.
4. The lightweight oil-resistant anti-slip foamed shoe sole according to claim 1, wherein: the cross-linking agent is a cross-linking agent BIBP.
5. The lightweight oil-resistant anti-slip foamed shoe sole according to claim 1, wherein: the acrylonitrile-butadiene rubber contains 18-24% of acrylonitrile.
6. A preparation method of light oil-resistant anti-slip rubber foamed soles is characterized by comprising the following steps: the method comprises the following steps:
firstly, placing the raw materials except the foaming agent, the accelerant and the cross-linking agent into an internal mixer for internal mixing, discharging rubber when the internal mixing temperature reaches 112-115 ℃, and placing the internal mixer at room temperature for more than 24 hours;
mixing the internally mixed mixture on a double-roller open mill, adding accurately weighed foaming agent, accelerator and crosslinking agent, uniformly mixing, and performing sheet-shaped discharge to obtain a foamed sheet;
and step three, cutting the foamed sheet into a sole shape, placing the sole shape into a sole mold, and foaming and molding at the foaming temperature of 145-155 ℃ to obtain the light oil-resistant anti-slip foamed sole.
7. The preparation method of the light oil-resistant anti-skid foamed sole according to claim 6, wherein the preparation method comprises the following steps: in the first step, the banburying process specifically comprises the following steps: firstly, mixing ethylene-vinyl acetate copolymer, maleic anhydride grafted EVA, SBS thermoplastic elastomer and nitrile rubber, and banburying in a banbury mixer for 15 min; continuously adding the raw materials except the foaming agent, the accelerant and the cross-linking agent, and mixing and banburying for 10 min; then adjusting the banburying temperature to 90 ℃, keeping for 5min and then turning for one time; when the banburying temperature is raised to 98 ℃, performing secondary material turning; when the banburying temperature is increased to 103 ℃, turning materials for three times; stirring for four times when the banburying temperature is increased to 108 ℃; and (4) after the banburying temperature is raised to 112-115 ℃, performing five times of material turning, banburying for 2min, discharging rubber, and standing at room temperature for more than 24 h.
8. The preparation method of the light oil-resistant anti-skid foamed sole according to claim 6, wherein the preparation method comprises the following steps: and in the second step, thinning the EVA foaming sheet at least twice in a double-roll open mill, and discharging the EVA foaming sheet with the thickness of 2-3 mm.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104277316A (en) * | 2014-08-07 | 2015-01-14 | 茂泰(福建)鞋材有限公司 | Antiskid EVA sole and preparation method thereof |
| CN113004606A (en) * | 2021-03-05 | 2021-06-22 | 泉州龙步鞋业有限公司 | Wear-resistant EVA (ethylene vinyl acetate) foamed sole and processing technology thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104277316A (en) * | 2014-08-07 | 2015-01-14 | 茂泰(福建)鞋材有限公司 | Antiskid EVA sole and preparation method thereof |
| CN113004606A (en) * | 2021-03-05 | 2021-06-22 | 泉州龙步鞋业有限公司 | Wear-resistant EVA (ethylene vinyl acetate) foamed sole and processing technology thereof |
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