CN110819055A - Sole wear-resistant performance standard sample material and preparation method thereof - Google Patents
Sole wear-resistant performance standard sample material and preparation method thereof Download PDFInfo
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- CN110819055A CN110819055A CN201911119297.2A CN201911119297A CN110819055A CN 110819055 A CN110819055 A CN 110819055A CN 201911119297 A CN201911119297 A CN 201911119297A CN 110819055 A CN110819055 A CN 110819055A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
- C08L53/025—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes modified
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/062—HDPE
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
A standard sample material for the antiwear performance of sole is prepared from hydrogenated styrene-butadiene block copolymer (SEBS), Polystyrene (PS), ethylene-vinyl acetate copolymer (EVA) and high-density polyethylene (HDPE). The SEBS has good performances of aging resistance, high temperature resistance, chemical corrosion resistance and the like; PS has good processing fluidity, chemical corrosion resistance, good impact resistance and the like; the EVA has the characteristics of light specific gravity, high molding speed, good dimensional stability and the like; the HDPE has the characteristics of good wear resistance, toughness, cold resistance, chemical stability and the like. The wear-resisting performance standard sample of the sole is prepared by adopting a vertical injection compression molding process, and has good weather resistance; good chemical resistance; low shrinkage, high dimensional stability, low resilience; good abrasion uniformity and stability; good processing fluidity and the like.
Description
Technical Field
The invention relates to a sole wear-resisting property standard sample material and a preparation method thereof, which are mainly used for quality control, method evaluation, accuracy verification of the method and check during detection equipment of sole wear-resisting property detection of shoes, and can also be used for production control, finished product analysis, quality monitoring and the like of shoe products.
Background
As a world shoe-making big country, shoes play an important role in the economic construction of China and the daily life of the masses. When the shoe is worn and used, the sole can be under the action of friction force, and then abrasion is generated. Abrasion is caused by the material rubbing against other objects or being impacted by various hard particles such as sand. The wear resistance of the sole is directly related to the durability of the shoe product, and meanwhile, the wear resistance of the sole is also an important technical index for measuring the quality grade of the shoe product. Therefore, the test measurement of the wear resistance of the sole is one of the most important routine test items in the production and inspection of footwear products.
As GB/T3903.2-2017 wear resistance of the whole shoe test method for shoes is published, the fact that a wear resistance tester needs to set a reasonable verification period according to the use frequency is clearly noted, and a standard sole wear resistance sample needs to be used for verifying a grinding wheel, the development of the standard sole wear resistance sample can promote the implementation and the implementation of related character standards, and can improve the accuracy of the sole wear resistance test and the traceability of results of a detection mechanism, thereby constantly improving the international competitiveness of the shoe manufacturing industry in China.
The main technical indexes of the sole wear-resisting performance standard sample relate to three different wear-resisting levels, namely three different lengths of grinding marks, steel grinding wheels are selected for sole wear-resisting tests and are tested on a balance, and the grinding wheels can heat up and generate certain shearing force for test materials in the test process, so that the test has higher requirements on the sole wear-resisting performance standard sample, if the sample cannot jump in the test process, the sole wear-resisting performance standard sample has certain damping characteristics, the grinding marks do not have the phenomena of wheel sticking, unclear edges and the like, and meanwhile, the sole wear-resisting performance standard sample has good test uniformity (in the sample and between the samples) and test stability in a short period (high temperature or low temperature) and a long period (0-15 months).
Disclosure of Invention
The invention mainly aims at the vacancy of a sole wear-resisting property standard sample in the current domestic shoe detection industry and solves a series of problems which are easy to generate in the sole wear-resisting test process, and provides a sole wear-resisting property standard sample material and a preparation method thereof.
The technical scheme of the invention is as follows:
a sole wear-resisting property standard sample material is characterized by comprising the following components in parts by weight:
50-60% of hydrogenated styrene-butadiene block copolymer
5-20 parts of polystyrene
5-10% of ethylene-vinyl acetate copolymer
1.0 to 5.0 parts by weight of high density polyethylene
5 to 20 parts of reinforcing agent
1.0-2.0% of an active agent
5-30% of naphthenic oil.
The preparation method of the sole wear-resistant performance standard sample material is characterized by comprising the following steps:
(1) banburying: plasticating the high-density polyethylene and the naphthenic oil in an internal mixer for 3-5min, wherein the rotating speed of the internal mixer is 60-70 rpm; adding polystyrene, high density polyethylene and ethylene-vinyl acetate copolymer, and banburying for 5-8 min; adding reinforcing agent, mixing for 5-10min until the filler is uniformly dispersed; adding activator, and mixing for 2-3 min; the banburying temperature of all the raw materials is 170-195 ℃ according to the weight parts;
(2) and (3) extruding and granulating: extruding and granulating the internally mixed materials;
(3) and (3) cooling and drying: drying the granulated and cooled particles to obtain blended particles;
(4) compression molding: and (4) putting the blended granules into a mould to be cooled and formed into a sole wear-resisting property standard sample.
The invention has the advantages that: the matrix adopted by the material is hydrogenated styrene-butadiene block copolymer (SEBS), Polystyrene (PS), ethylene-vinyl acetate copolymer (EVA) and high-density polyethylene (HDPE). The SEBS has good performances of aging resistance, high temperature resistance, chemical corrosion resistance and the like; PS has good processing fluidity, chemical corrosion resistance, good impact resistance and the like; the EVA has the characteristics of light specific gravity, high molding speed, good dimensional stability and the like; the HDPE has the characteristics of good wear resistance, toughness, cold resistance, chemical stability and the like. The wear-resistant performance standard sample of the sole is prepared by adopting a vertical injection compression molding process, and the material has the following advantages: (1) good weather resistance; (2) good chemical resistance; (3) low shrinkage, high dimensional stability, low resilience; (4) good abrasion uniformity and stability; (5) good processing fluidity.
Detailed Description
The invention relates to a sole wear-resisting property standard sample material which is characterized by comprising the following components in parts by weight:
50-60% of hydrogenated styrene-butadiene block copolymer
5-20 parts of polystyrene
5-10% of ethylene-vinyl acetate copolymer
1.0 to 5.0 parts by weight of high density polyethylene
5 to 20 parts of reinforcing agent
1.0-2.0% of an active agent
5-30% of naphthenic oil.
The reinforcing agent is one or two of magnesium silicate monohydrate (talcum powder) and precipitated hydrated silicon dioxide (also called white carbon black and white smoke) which are mixed according to any proportion.
The active agent is at least one of diethylene glycol, polyethylene glycol (PEG 4000), stearic acid and magnesium oxide.
The invention relates to a preparation method of a sole wear-resisting property standard sample material, which comprises the following steps:
(1) banburying: plasticating the high-density polyethylene and the naphthenic oil in an internal mixer for 3-5min, wherein the rotating speed of the internal mixer is 60-70 rpm; adding polystyrene, high density polyethylene and ethylene-vinyl acetate copolymer, and banburying for 5-8 min; adding reinforcing agent, mixing for 5-10min until the filler is uniformly dispersed; adding activator, and mixing for 2-3 min; the raw materials are mixed according to the weight portion, and the banburying temperature is 170-195 ℃. The reinforcing agent is added for 2-3 times, and the time interval of each addition is 1-3 minutes;
(2) and (3) extruding and granulating: and extruding and granulating the internally mixed materials. Extruding and granulating by adopting a double-screw extruder, wherein the temperature of a feeding section of the extruder is 175-185 ℃, and the temperature of a machine head is 190-200 ℃;
(3) and (3) cooling and drying: drying the granulated and cooled mixture to obtain blended granules, and drying the blended granules to constant weight to obtain the blended granules;
(4) compression molding: and (4) putting the blended granules into a mould to be cooled and formed into a sole wear-resisting property standard sample.
Adopting a vertical injection molding machine to perform injection molding, wherein the temperature of 1-4 sections of the vertical injection molding machine is respectively 175 ℃ for 170-.
Other processing aids commonly used in the art, such as pigments, optical brighteners, light stabilizers, and the like, may also be added to the materials of the present invention.
A series of sole wear-resistant performance standard sample materials are mainly prepared, and details are shown in examples 1-3.
Example 1:
the components (mass ratio) are as follows: 60 parts of SEBS, 10 parts of PS, 5 parts of EVA (ethylene-vinyl acetate), 2.5 parts of HDPE (high-density polyethylene), 5 parts of naphthenic oil, 15 parts of talcum powder, 5.0 parts of white carbon black, 1.5 parts of stearic acid and 40001.0 parts of PEG.
The materials are weighed according to the proportion, and are mixed, extruded and granulated, and injected and molded according to the feeding sequence and the preparation process.
Example 2:
the components (mass ratio) are as follows: 55 parts of SEBS, 5 parts of PS, 5 parts of EVA, 2.5 parts of HDPE, 15 parts of naphthenic oil, 10 parts of talcum powder, 5.0 parts of white carbon black, 1.5 parts of stearic acid and 40001.0 parts of PEG.
The materials are weighed according to the proportion, and are mixed, extruded and granulated, and injected and molded according to the feeding sequence and the preparation process.
Example 3:
the components (mass ratio) are as follows: 50 parts of SEBS, 5 parts of PS, 10 parts of EVA, 1.0 part of HDPE, 25 parts of naphthenic oil, 5 parts of talcum powder, 2.0 parts of white carbon black, 1.5 parts of stearic acid and 40001.0 parts of PEG.
The materials are weighed according to the proportion, and are mixed, extruded and granulated, and injected and molded according to the feeding sequence and the preparation process.
The performance indexes of the sole wear-resistant performance standard sample materials prepared in the embodiments 1-3 are shown in table 1. The wear resistance is tested according to GB/T3903.2-2017, the dimensional stability is tested according to GB/T3903.13-200, and the hardness is tested according to GB/T3903.4-2017 by a Shore A hardness tester; the impact resilience test is carried out according to GB/T1681-2009.
TABLE 1 EXAMPLES 1 TO 3 AND THE INDICATIES OF THE PRESENT PRODUCTS
| Detecting items | Example 1 | Example 2 | Example 3 |
| Grinding scar length (mm) | 7.2±0.3 | 8.7±0.2 | 14.6±0.5 |
| Dimensional stability (%) | ≤0.3 | ≤0.3 | ≤0.5 |
| Hardness (Shao Er A) | 65±2 | 62±2 | 40±2 |
| Impact resilience (%) | 23±2 | 26±3 | 31±2 |
As can be seen from Table 1, the sole wear-resistant performance standard sample material prepared by the invention comprises three different wear-resistant levels, the lengths of the grinding marks are respectively (7.2 +/-0.3) mm, (8.7 +/-0.2) mm and (14.6 +/-0.5) mm, and the sole wear-resistant performance standard sample material has good dimensional stability and lower impact resilience, and the phenomena of grinding wheel jumping, wheel sticking, unclear grinding mark edges and the like are avoided in the test process. The uniformity and stability of three samples with different wear resistance levels are tested, wherein the uniformity test experimental data are subjected to data statistical treatment by adopting a one-factor variance analysis method, and the statistical calculation F values of the wear resistance performances of the three wear resistance levels are smaller than a test critical value through the calculation and statistics of test results, so that the standard samples have no significant difference between the samples and in the samples, and the material uniformity of the standard samples of the wear resistance performances of the soles in the batch is good; meanwhile, the short-term stability (different environmental temperatures) and the long-term stability (15 months) of the sole wear-resisting property standard sample material prepared by the invention are tested, the test data are subjected to data statistical treatment by adopting a t test method, and the test result statistics show that t calculated values are all smaller than a t critical value, which shows that the sole wear-resisting property standard sample of the batch has good short-term stability and long-term stability.
In conclusion, according to the preparation method of the sole wear-resistant performance standard sample material, the sole wear-resistant performance standard sample with different wear-resistant levels, high dimensional stability, strong weather resistance and good test uniformity and stability can be prepared, and the application field of the material relates to wear-resistant performance tests of whole shoes, soles, sole material test pieces and the like (the test method standard is GB/T3903.2-2017 shoe whole shoe test method wear-resistant performance).
The raw materials used in the invention are all commercial products, wherein the hydrogenated styrene-butadiene block copolymer (SEBS) is produced by Shell company of America and is sold under the brand number KRATON G1651; polystyrene (PS), manufactured by taiwan chemical company, taiwan, china, under the designation 5250; low density polyethylene (HDPE), china petrochemical Yangzi petrochemical company Limited, designation 5000S; ethylene-vinyl acetate copolymer (EVA) is a petrochemical product of Yanshan mountain China, and is provided with the trademark of 14J 4.
The detailed conditions of the instrument names, the models and the test conditions of all the whole shoe abrasion resistance testing machines are as follows:
(1) testing an instrument: the whole shoe abrasion resistance tester has the model of a high-speed rail GT-7012-NGB
(2) And (3) testing conditions are as follows: load carrying capacity: 4.9N; the rotating speed of the grinding wheel is (191 +/-5) r/min; the test time was 20min continuously.
Claims (7)
1. A sole wear-resisting property standard sample material is characterized by comprising the following components in parts by weight:
50-60% of hydrogenated styrene-butadiene block copolymer
5-20 parts of polystyrene
5-10% of ethylene-vinyl acetate copolymer
1.0 to 5.0 parts by weight of high density polyethylene
5 to 20 parts of reinforcing agent
1.0-2.0% of an active agent
5-30% of naphthenic oil.
2. The wear-resistant performance standard sample material for soles according to claim 1, wherein the reinforcing agent is one or both of magnesium silicate monohydrate and precipitated silica hydrate mixed in an arbitrary ratio.
3. The wear-resistant performance standard sample material for shoe soles according to claim 1, wherein the active agent is at least one of diethylene glycol, polyethylene glycol, stearic acid and magnesium oxide.
4. A method for preparing the standard sample material for the wear resistance of the sole as recited in claim 1, comprising the steps of:
(1) banburying: plasticating the high-density polyethylene and the naphthenic oil in an internal mixer for 3-5min, wherein the rotating speed of the internal mixer is 60-70 rpm; adding polystyrene, high density polyethylene and ethylene-vinyl acetate copolymer, and banburying for 5-8 min; adding reinforcing agent, mixing for 5-10min until the filler is uniformly dispersed; adding activator, and mixing for 2-3 min; the banburying temperature of all the raw materials is 170-195 ℃ according to the weight parts;
(2) and (3) extruding and granulating: extruding and granulating the internally mixed materials;
(3) and (3) cooling and drying: drying the granulated and cooled granules to constant weight at the drying temperature of 60 ℃ to obtain blended granules;
(4) compression molding: and (4) putting the blended granules into a mould to be cooled and formed into a sole wear-resisting property standard sample.
5. The method according to claim 4, wherein in step (1), the strengthening agent is added in 2-3 times, and the time interval between each addition is 1-3 minutes.
6. The method as claimed in claim 4, wherein in the step (2), a twin-screw extruder is used for extrusion and granulation, the temperature of the feeding section of the extruder is 175-.
7. The method as claimed in claim 4, wherein in the step (4), a vertical injection molding machine is used for injection molding, the temperatures of the sections 1-4 of the vertical injection molding machine are respectively 175 ℃, 165-, 170 ℃, 160-, 165 ℃ and 155-, 160 ℃, the injection flow rate is 40-50ml/s, and the injection pressure is 55-60Pa, and the standard sample material for the wear resistance of the sole is prepared by cooling and molding in a mold for 15-20s and then discharging the sheet.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116355299A (en) * | 2023-04-11 | 2023-06-30 | 四川大学 | Standard reference glue material and preparation method and application thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1327000A (en) * | 2001-07-16 | 2001-12-19 | 余阿文 | Improved thermoplastic elastomer material and its preparing method |
| KR100679553B1 (en) * | 2006-04-27 | 2007-02-06 | 이창호 | Ps complex material manufacturing method and ps complex material |
| KR20090060520A (en) * | 2007-12-10 | 2009-06-15 | 윤정식 | Low specific gravity foam with shock absorbing property and there of |
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2019
- 2019-11-15 CN CN201911119297.2A patent/CN110819055B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1327000A (en) * | 2001-07-16 | 2001-12-19 | 余阿文 | Improved thermoplastic elastomer material and its preparing method |
| KR100679553B1 (en) * | 2006-04-27 | 2007-02-06 | 이창호 | Ps complex material manufacturing method and ps complex material |
| KR20090060520A (en) * | 2007-12-10 | 2009-06-15 | 윤정식 | Low specific gravity foam with shock absorbing property and there of |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116355299A (en) * | 2023-04-11 | 2023-06-30 | 四川大学 | Standard reference glue material and preparation method and application thereof |
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