CN116355299A - Standard reference glue material and its preparation method and application - Google Patents

Abstract

The invention provides a standard reference glue material, a preparation method and application thereof. The standard reference rubber material comprises a rubber base material, an ethylene-vinyl acetate copolymer, a vulcanizing agent, naphthenic oil and tire powder; wherein, based on 100 parts by weight of the total rubber substrate, the content of the ethylene-vinyl acetate copolymer is 5-20 parts, the content of the vulcanizing agent is 2-5 parts, the content of the naphthenic oil is 15-30 parts, and the content of the tire powder is 50-100 parts. The standard reference glue material has low abrasion mass loss, small relative expansion uncertainty and good abrasion test uniformity and stability (including long-term stability and short-term transportation stability).

Description

Standard reference glue material and its preparation method and application

technical field

The invention relates to a standard reference rubber material and its preparation method and application, in particular to a standard reference rubber material used in roller abrasion machine method wear test, its preparation method and application, and belongs to the field of standard materials.

Background technique

During the process of wearing and using the shoes, the soles of the shoes will be subjected to frictional forces, which will cause wear and tear. Abrasion is caused by friction between materials and other objects or by the impact of various hard particles such as sand. The wear resistance of the sole directly affects the service life of footwear products, and the wear resistance is also an important technical index to measure the quality level of footwear products. Therefore, testing and measuring the wear resistance of the sole is one of the very important routine testing items in the production and inspection of footwear products.

At present, there are five main wear testing methods for footwear products, including the whole shoe wear test method, the Akron abrasion machine method, the roller abrasion machine method, the NBS (National bureau of standard) abrasion test machine method and the Lamborn test method. The testing machine method, the 5 testing methods have different testing principles and characteristics. Among them, the wear resistance test of the roller abrasion machine method is also called DIN (Deutsches Institut Normung) abrasion test, which is an important test method in the world and domestically, and can be widely used in the wear resistance of rubber and elastomer materials at home and abroad. Testing of products such as shoe soles, tires, conveyor belts and rubber strips.

The advantages of the DIN abrasion test are the stable test process, simple and fast operation, small sample size, non-repetitive friction test track, etc., because the method uses standard reference rubber (that is, the roller wear machine method wear test standard) in the test process. Reference glue), which can effectively reduce the test error caused by the test equipment and personnel operation. At present, the standard reference rubber materials used by relevant laboratories at home and abroad are all from the BAM standard rubber produced by the German Federal Institute for Materials Testing.

With the rapid increase in the number of testing institutions and the demand for testing, the demand for test consumables and standard samples is also increasing. DIN abrasion testing has a wide range of applications and a large demand, resulting in a gradual shortage of BAM standard rubber. But in fact, the product still has shortcomings such as poor uniformity and easy frosting. Therefore, the self-developed reference rubber for roller wear machine method wear test standard has high social value and good economic benefits. Accuracy and traceability of mechanical abrasion testing.

Contents of the invention

The problem to be solved by the invention

In view of the technical problems existing in the prior art, the present invention firstly provides a standard reference glue material. The standard reference rubber material of the present invention has low abrasion mass loss and small relative expansion uncertainty, and has good abrasion test uniformity and long-term and short-term test stability.

Furthermore, the present invention also provides a preparation method of a standard reference rubber material. The preparation method of the present invention is simple and easy, and the raw materials are easy to obtain, which is suitable for mass production.

solutions to problems

A kind of standard reference rubber material of the present invention, wherein, described standard reference rubber material comprises rubber substrate, ethylene-vinyl acetate copolymer, vulcanizing agent, naphthenic oil and tire powder; Wherein,

Based on 100 parts by total mass of the rubber substrate, the content of the ethylene-vinyl acetate copolymer is 5-20 parts, the content of the vulcanizing agent is 2-5 parts, and the naphthenic oil The content is 15-30 parts, and the content of the tire powder is 50-100 parts.

According to the standard reference rubber material of the present invention, wherein, the rubber substrate comprises butadiene rubber and natural rubber; preferably, the total mass fraction of the rubber substrate is 100 parts, and the butadiene rubber The content of the natural rubber is 40-60 parts, and the content of the natural rubber is 40-60 parts.

According to the standard reference rubber material of the present invention, wherein, the standard reference rubber material also contains one or a combination of two or more of a reinforcing agent, an active agent, an anti-aging agent, and an accelerator; preferably, the The total mass of the rubber base material is 100 parts, the content of the reinforcing agent is 50-75 parts, the content of the active agent is 5-15 parts, and the content of the accelerator is 2-5 parts , the content of the anti-aging agent is 2 to 15 parts.

According to the standard reference rubber material of the present invention, the reinforcing agent includes calcium carbonate and/or white carbon black.

According to the standard reference glue material of the present invention, the active agent includes one or a combination of two or more of diethylene glycol, polyethylene glycol, stearic acid, magnesium oxide, and zinc oxide.

According to the standard reference rubber material of the present invention, wherein the anti-aging agent includes 2,2,4-trimethyl-1,2-dihydroquinoline polymer, 1,2-bis[β-(3 ,5-di-tert-butyl-4-hydroxyphenyl)propionyl]hydrazine, tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate]pentaerythritol ester, 4,4'- One or a combination of two or more of thiobis(6-tert-butyl-3-methylphenol), distearyl thiodipropionate and dilauryl thiodipropionate.

According to the standard reference glue material of the present invention, wherein, the accelerator includes N-cyclohexyl-2-benzothiazole sulfenamide, N-tert-butyl-2-benzothiazole sulfenamide, 2,2 One or a combination of two or more of '-dibenzothiazole disulfide, tetramethylthiuram monosulfide, 2-mercaptobenzothiazole, and tetramethylthiuram disulfide.

The present invention also provides a preparation method of the standard reference glue material according to the present invention, which includes the step of mixing the components of the standard reference glue material.

According to the preparation method of the present invention, wherein the preparation method comprises:

mixing each component of the standard reference rubber material and then kneading to obtain a rubber mix;

Carrying out sheet mixing to the mixed rubber to obtain a mixed rubber sheet;

The mixed rubber sheet is molded and vulcanized to obtain a standard reference rubber material.

The present invention also provides an application of the standard reference rubber material according to the present invention in the wear resistance test of the roller abrasion machine method.

The effect of the invention

The standard reference rubber material of the present invention has low abrasion mass loss, small relative expansion uncertainty, and good abrasion test uniformity and stability (including long-term stability and short-term transportation stability).

Furthermore, the preparation method of the standard reference rubber material of the present invention is simple and feasible, the raw materials are easy to obtain, and are suitable for mass production.

Detailed ways

Various exemplary embodiments, features, and aspects of the invention are described in detail below. The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as superior or better than other embodiments.

In addition, in order to better illustrate the present invention, numerous specific details are given in the specific embodiments below. It will be understood by those skilled in the art that the present invention may be practiced without certain of the specific details. In other instances, methods, means, devices and steps well known to those skilled in the art are not described in detail in order to highlight the gist of the present invention.

Unless otherwise stated, the units used in this specification are all international standard units, and the numerical values and numerical ranges appearing in the present invention should be understood as including inevitable systematic errors in industrial production.

In this specification, the meaning expressed by "may" includes the meaning of performing certain processing and not performing certain processing.

In this specification, references to "some specific/preferred embodiments", "other specific/preferred embodiments", "embodiments" and the like refer to specific elements described in relation to the embodiments (for example, A feature, structure, property, and/or characteristic) is included in at least one embodiment described herein, and may or may not be present in other embodiments. In addition, it is to be understood that the described elements may be combined in any suitable manner in the various embodiments.

In this specification, the numerical range represented by "numerical value A - numerical value B" means the range which includes numerical value A and B of an end point.

In this specification, when "normal temperature" and "room temperature" are used, the temperature may be 10-25°C.

<first aspect>

The first aspect of the present invention provides a kind of standard reference rubber material, and described standard reference rubber material comprises rubber substrate, ethylene-vinyl acetate copolymer, vulcanizing agent, naphthenic oil and tire powder; Wherein,

Based on 100 parts by total mass of the rubber substrate, the content of the ethylene-vinyl acetate copolymer is 5-20 parts, the content of the vulcanizing agent is 2-5 parts, and the naphthenic oil The content is 15-30 parts, and the content of the tire powder is 50-100 parts.

The standard reference rubber material of the present invention has low abrasion mass loss and small relative expansion uncertainty, and has good abrasion test uniformity and long-term and short-term test stability. in particular:

The rubber substrate of the present invention preferably comprises butadiene rubber and natural rubber;

The inventors of the present invention have found that natural rubber has excellent elasticity, insulation, and water barrier properties, but due to its poor aging resistance and weather resistance, it usually needs to be combined with other rubbers to improve its performance. Compared with natural rubber, butadiene rubber has excellent low temperature resistance, wear resistance, low heat generation, and dynamic mechanical properties. The blending of natural rubber and butadiene rubber can not only effectively improve the aging and wear resistance of products, but also improve the low temperature resistance of products. Therefore, it is preferable to use butadiene rubber and natural rubber as the rubber base material of the present invention.

Preferably, based on 100 parts by mass of the rubber substrate, the content of the butadiene rubber is 40 to 60 parts, for example: 42 parts, 45 parts, 48 parts, 50 parts, 52 parts, 55 parts parts, etc.; the content of the natural rubber is 40-60 parts, for example: 42 parts, 45 parts, 48 parts, 50 parts, 52 parts, 55 parts, etc. The inventors have found that when the content of butadiene rubber is 40 to 60 parts and the content of natural rubber is 40 to 60 parts, the effects of both butadiene rubber and natural rubber can be brought into play most effectively, and are suitable as the rubber base of the present application. material use.

In the present invention, the cohesiveness and processability of butadiene rubber and natural rubber are further improved by using ethylene-vinyl acetate copolymer to achieve a better thermodynamic compatibility effect, thereby obtaining a standard reference rubber material with excellent performance.

Preferably, based on 100 parts by mass of the rubber substrate, the content of the ethylene-vinyl acetate copolymer is 5 to 20 parts, for example: 8 parts, 10 parts, 12 parts, 15 parts, 18 parts parts, etc.; when the content of ethylene-vinyl acetate copolymer is 5 to 20 parts, the cohesiveness and processability between butadiene rubber and natural rubber can be further effectively improved.

In the present invention, vulcanized rubber is obtained by using a vulcanizing agent. As for the vulcanizing agent, the present invention is not particularly limited, and it may be a vulcanizing agent commonly used in the art. Specifically, in the present invention, based on 100 parts by mass of the rubber substrate, the content of the vulcanizing agent is 2 to 5 parts, for example: 2.5 parts, 3 parts, 3.5 parts, 4 parts, 4.5 parts, etc.; when the content of the vulcanizing agent is 2 to 5 parts, it is more beneficial to obtain the desired vulcanized rubber.

Generally speaking, vulcanizing agents include inorganic vulcanizing agents and organic vulcanizing agents. The inorganic vulcanizing agent includes sulfur, sulfur monochloride, selenium, tellurium and the like. Organic vulcanizing agents include sulfur-containing accelerators (such as accelerator TMTD), organic peroxides (such as benzoyl peroxide), quinone oxime compounds, polysulfide polymers, urethanes, and maleimide derivatives wait. In the present invention, sulfur is preferably used as the vulcanizing agent in consideration of not introducing other impurities.

In the present invention, the standard reference rubber material also contains naphthenic oil, based on 100 parts by mass of the rubber substrate, the content of the naphthenic oil is 15-30 parts, for example: 18 parts , 20, 22, 25, 28, etc. The naphthenic oil of the present invention can be used to reduce the Mooney viscosity to improve the fluidity in the mold, so as to form better. When the content of the naphthenic oil is 15-30 parts, the efficacy of the naphthenic oil can be most effectively exerted.

Further, the standard reference rubber material of the present invention also contains tire powder, based on 100 parts by mass of the rubber substrate, the content of the tire powder is 50-100 parts, for example: 55 parts, 60 parts parts, 65 parts, 70 parts, 75 parts, 80 parts, 85 parts, 90 parts, 95 parts, etc. The present invention reduces cost by using tire powder, and of course the more the cost is lowered, but the basic physical properties and formability of the rubber must be ensured. In addition, the inventors of the present invention found that adding tire powder to the standard reference rubber material of the present application can improve the wear uniformity and aging resistance of the standard reference rubber material. When the content of tire powder is 50-100 parts, its efficacy can be brought into play most effectively.

In some specific embodiments, the standard reference rubber material also includes one or a combination of two or more of a reinforcing agent, an active agent, an anti-aging agent, and an accelerator; preferably, the rubber base material The total mass parts is 100 parts, the content of the reinforcing agent is 50-75 parts, the content of the active agent is 5-15 parts, the content of the accelerator is 2-5 parts, the anti-aging agent The content is 2 to 15 parts.

For the reinforcing agent, the present invention can improve the mechanical strength of the rubber by using the reinforcing agent to play the role of filling reinforcement. Further, in the present invention, based on 100 parts by mass of the rubber substrate, the content of the reinforcing agent is 50-75 parts, for example: 52 parts, 55 parts, 58 parts, 60 parts , 62, 65, 68, 70, 72, etc. When the content of the reinforcing agent is 50-75 parts, the mechanical strength of the rubber can be effectively improved. Specifically, the reinforcing agent includes calcium carbonate and/or white carbon black. The white carbon black is also called precipitated hydrated silica, white smoke and the like.

As for the active agent, it can increase the activity of the vulcanization accelerator, increase the vulcanization speed and vulcanization efficiency of the rubber compound, and improve the performance of the vulcanized rubber. Further, based on 100 parts by mass of the total rubber substrate, the content of the active agent is 5-15 parts, for example: 7 parts, 9 parts, 11 parts, 13 parts, etc. When the content of the active agent is 5-15 parts, the effect of the active agent can be better exerted, the vulcanization activity can be improved, and the smoothness and texture of the surface of the vulcanized rubber can be improved.

Specifically, the active agent includes one or a combination of two or more of diethylene glycol, polyethylene glycol, stearic acid, magnesium oxide, and zinc oxide.

For the anti-aging agent, the anti-aging agent used in the present invention is to prevent the aging of rubber and prolong the service life of rubber products, so that the standard reference rubber material of the present invention has excellent anti-aging effect. Further, based on 100 parts by mass of the total rubber substrate, the content of the anti-aging agent is 2 to 15 parts, for example: 4 parts, 5 parts, 7 parts, 9 parts, 11 parts, 13 parts wait. When the content of the anti-aging agent is 2-15 parts, it can effectively prevent the aging of rubber and prolong the service life of rubber products.

Further, the anti-aging agent includes 2,2,4-trimethyl-1,2-dihydroquinoline polymer, 1,2-bis[β-(3,5-di-tert-butyl-4-hydroxy Phenyl)propionyl]hydrazine, tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate]pentaerythritol ester, 4,4'-thiobis(6-tert-butyl-3 -methylphenol), distearyl thiodipropionate and dilauryl thiodipropionate or a combination of two or more.

For the accelerator, it can accelerate the cross-linking reaction of the rubber compound, shorten the vulcanization time, lower the vulcanization temperature, and reduce the amount of vulcanizing agent. Further, in the present invention, based on 100 parts by mass of the rubber substrate, the content of the accelerator is 2 to 5 parts, for example: 2.5 parts, 3 parts, 3.5 parts, 4 parts, 4.5 parts parts, etc.; when the content of the accelerator is 2-5 parts, it can play a higher role in vulcanization acceleration and ensure the safety of scorch.

Specifically, the accelerator includes N-cyclohexyl-2-benzothiazole sulfenamide, N-tert-butyl-2-benzothiazole sulfenamide, 2,2'-dibenzothiazole disulfide, a One or a combination of two or more of tetramethylthiuram sulfide, 2-mercaptobenzothiazole, and tetramethylthiuram disulfide.

<Second aspect>

The second aspect of the present invention provides a method for preparing the standard reference adhesive material according to the first aspect of the present invention, which includes the step of mixing the components of the standard reference adhesive material.

In some specific embodiments, the preparation method comprises:

mixing each component of the standard reference rubber material and then kneading to obtain a rubber mix;

Carrying out sheet mixing to the mixed rubber to obtain a mixed rubber sheet;

The mixed rubber sheet is molded and vulcanized to obtain a standard reference rubber material.

Specifically, the preparation method comprises the following steps:

(1) After mixing natural rubber, butadiene rubber, ethylene-vinyl acetate copolymer, other additives and vulcanizing agents optionally present, to obtain a rubber compound;

(2) refining the mixed rubber to obtain a mixed film;

(3) Pressing and vulcanizing the mixed rubber sheet to obtain a standard reference rubber material.

Specifically, the preparation method of the standard reference glue material comprises the following steps:

(1) Internal mixing: plasticize natural rubber and butadiene rubber in an internal mixer, control the internal mixing temperature within the range of 55-65°C for 3-5 minutes, and the internal mixer speed at 60-70rpm; then add ethylene -Vinyl acetate copolymer, banburying for 5-8min, the banburying temperature is controlled within the range of 75-90°C; add the reinforcing agent in 2-3 times, the time interval between each addition is 1-3min, and kneading for 5-10min until the dispersion is uniform; then add tire powder, knead for 3-5 minutes until the dispersion is uniform, and control the mixing temperature within 90°C; then add active agent and anti-aging agent, knead for 2-3 minutes; control the mixing temperature at 55-65 within ℃ range; then add naphthenic oil, add vulcanizing agent and accelerator after mixing for 2-3 minutes, and discharge after mixing for 2-3 minutes to obtain mixed rubber;

(2) Sheet refining: the mixed rubber is refined on an open mill, and parked for 24 hours after the sheet is released to obtain a mixed film;

(3) Compression molding: put the mixed rubber sheet into a flat vulcanizer for molding vulcanization, the vulcanization temperature is 150-160°C, and the vulcanization time is 3-5min, and the standard reference rubber for the wear resistance test of the roller abrasion machine method is obtained. The sample size is 181mm x 181mm x 8mm.

Further, the present invention also provides a use of the standard reference rubber material according to the present invention in the wear resistance test of the roller abrasion machine method.

Example

Embodiments of the present invention will be described in detail below in conjunction with examples, but those skilled in the art will understand that the following examples are only used to illustrate the present invention, and should not be considered as limiting the scope of the present invention. Those who do not indicate the specific conditions in the examples are carried out according to the conventional conditions or the conditions suggested by the manufacturer. The reagents or instruments used were not indicated by the manufacturer, and they were all commercially available conventional products.

Example 1

The composition (mass ratio) is: 55 parts of natural rubber, 45 parts of butadiene rubber, 15 parts of ethylene-vinyl acetate copolymer, 50 parts of white carbon black, 10 parts of calcium carbonate, 80 parts of tire powder, 15 parts of naphthenic oil, oxidized 5 parts of zinc, 1.0 parts of polyethylene glycol, 1.0 parts of stearic acid, 2.5 parts of 2,2,4-trimethyl-1,2-dihydroquinoline polymer, 2,2'-dibenzo disulfide 2 parts of thiazole, 0.5 part of tetramethylthiuram disulfide, 0.6 part of N-tert-butyl-2-benzothiazole sulfenamide, and 3 parts of sulfur.

The preparation method is:

(1) Internal mixing: plasticize the natural rubber and butadiene rubber in the internal mixer, control the internal mixing temperature at 60°C for 5 minutes, and the internal mixer speed at 60rpm; then add ethylene-vinyl acetate copolymer, internal mixing 5min, the banbury temperature is controlled within the range of 90°C; then add the reinforcing agent in 3 times, the time interval between each addition is 2min, and knead for 8min until the dispersion is uniform; then add the tire powder, knead for 5min until the dispersion is uniform, dense Control the refining temperature within 90°C; add active agent and anti-aging agent, and mix for 3 minutes; control the banburying temperature within the range of 60°C; add naphthenic oil, add vulcanizing agent and accelerator, and mix for 2 minutes After that, the material can be discharged to obtain the mixed rubber;

(2) Sheet refining: the mixed rubber is refined on an open mill, and parked for 24 hours after the sheet is released to obtain a mixed film;

(3) Compression molding: Put the mixed rubber sheet into a flat vulcanizer for compression vulcanization molding. The vulcanization temperature is 155°C and the vulcanization time is 5 minutes. The standard reference rubber for wear resistance test of the roller abrasion machine method is obtained, and the sample size is 181mm. ×181mm×8mm.

Example 2

The composition (mass ratio) is: 50 parts of natural rubber, 50 parts of butadiene rubber, 15 parts of ethylene-vinyl acetate copolymer, 50 parts of white carbon black, 10 parts of calcium carbonate, 85 parts of tire powder, 15 parts of naphthenic oil, oxidized 5 parts of zinc, 1.0 parts of polyethylene glycol, 1.0 parts of stearic acid, 2.5 parts of 2,2,4-trimethyl-1,2-dihydroquinoline polymer, 2,2'-dibenzo disulfide 2 parts of thiazole, 0.5 part of tetramethylthiuram disulfide, 0.6 part of N-tert-butyl-2-benzothiazole sulfenamide, and 3 parts of sulfur.

The preparation method is:

(1) Internal mixing: masticating natural rubber and butadiene rubber in an internal mixer, controlling the internal mixing temperature at 60°C for 4 minutes, and the internal mixer speed at 60rpm; then adding ethylene-vinyl acetate copolymer, internal mixing 5min, the banbury temperature is controlled within the range of 90°C; then add the reinforcing agent in 3 times, the time interval between each addition is 2min, and knead for 8min until the dispersion is uniform; then add the tire powder, knead for 5min until the dispersion is uniform, dense Control the refining temperature within 90°C; add active agent and anti-aging agent, and mix for 3 minutes; control the banburying temperature within the range of 60°C; add naphthenic oil, add vulcanizing agent and accelerator, and mix for 2 minutes After that, the material can be discharged to obtain the mixed rubber;

(2) Sheet refining: the mixed rubber is refined on an open mill, and parked for 24 hours after the sheet is released to obtain a mixed film;

(3) Compression molding: Put the mixed rubber sheet into a flat vulcanizer for compression vulcanization molding. The vulcanization temperature is 155°C and the vulcanization time is 5 minutes. The standard reference rubber for wear resistance test of the roller abrasion machine method is obtained, and the sample size is 181mm. ×181mm×8mm.

Example 3

The composition (mass ratio) is: 45 parts of natural rubber, 55 parts of butadiene rubber, 17 parts of ethylene-vinyl acetate copolymer, 50 parts of white carbon black, 15 parts of calcium carbonate, 85 parts of tire powder, 20 parts of naphthenic oil, oxidized 5 parts of zinc, 1.0 parts of polyethylene glycol, 1.0 parts of stearic acid, 2.5 parts of 2,2,4-trimethyl-1,2-dihydroquinoline polymer, 2,2'-dibenzo disulfide 2 parts of thiazole, 0.5 part of tetramethylthiuram disulfide, 0.6 part of N-tert-butyl-2-benzothiazole sulfenamide, and 3 parts of sulfur.

The preparation method is:

(1) Internal mixing: masticate natural rubber and butadiene rubber in an internal mixer, control the internal mixing temperature within the range of 60°C for 3 minutes, and the internal mixer speed is 60rpm; then add ethylene-vinyl acetate copolymer, Mix for 5 minutes, and control the mixing temperature within the range of 90°C; then add the reinforcing agent in 3 times, with an interval of 2 minutes between each addition, and mix for 10 minutes until the dispersion is uniform; then add tire powder, and mix for 5 minutes until the dispersion is uniform , the mixing temperature is controlled within 90°C; add active agent and anti-aging agent, and mix for 3 minutes; control the banbury temperature within 60°C; add naphthenic oil, add vulcanizing agent and accelerator after mixing for 3 minutes, and mix After refining for 2 minutes, the material can be discharged to obtain the mixed rubber;

(2) Sheet refining: the mixed rubber is refined on an open mill, and parked for 24 hours after the sheet is released to obtain a mixed film;

(3) Compression molding: Put the mixed rubber sheet into a flat vulcanizer for compression vulcanization molding. The vulcanization temperature is 155°C and the vulcanization time is 4min. The standard reference rubber for wear resistance test of the roller abrasion machine method is obtained, and the sample size is 181mm. ×181mm×8mm.

Performance Testing

1. Abrasion mass loss test, hardness test

Cut the standard reference rubber materials prepared in Examples 1 to 3 into cylindrical samples with a diameter of 16mm according to the sample requirements in GB/T 9867-2008. The specified No. 1 standard is tested with reference to the test method of rubber (non-rotating sample method), and the hardness is tested according to GB/T 3903.4-2017. Among them, the model of the abrasion testing machine is Gaotie GT-7012-D, and the model of the Shore A hardness tester is Shanghai Liuling LX-A. The performance indicators are shown in Table 1.

Table 1 Standard reference rubber material wear and hardness test results

As can be seen from Table 1, the abrasion mass loss range of the roller abrasion machine method wear-resistant test standard reference rubber prepared by the present invention is (180-200) mg, and the Shore hardness A also meets GB/T 9867-2008 Requirements, the samples have good wear uniformity. Using the formula and process of Example 3 to prepare the sample wear mass loss is closer to the standard requirements, and the uniformity is the best.

2. Stability test

The sample prepared in Example 3 of the present invention has been carried out short-term stability and long-term stability (36 months) inspection, and test method is according to the test method (non-rotating sample method) of No. 1 standard reference glue specified in GB/T 9867-2008 ) was tested, and the test data was processed statistically using the t test method. The statistics of the test results showed that the calculated values of t were all less than the critical value of t, indicating that the sample had good short-term stability and long-term stability. The test results are shown in Table 2 and Table 2. 3.

Table 2 short-term stability test results

Table 3 long-term stability test result

3. Application testing

10 unit samples were randomly cut from the sample prepared in Example 3 of the present invention and the BAM standard glue, and each sample was tested by method A (non-rotating sample method) in GB/T 9867-2008, and the results were as follows Table 4 shows.

Table 4 comparison test results

Sample serial number Example 3 sample BAM standard glue SAM-001 202 211 SAM-002 202 196 SAM-003 207 201 SAM-004 197 195 SAM-005 206 201 SAM-006 199 210 SAM-007 201 208 SAM-008 207 192 SAM-009 196 213 SAM-010 198 200 mean (mg) 201 203 RSD(%) 2.03 3.63

The comparative test results in Table 4 show that the standard relative deviation of the samples prepared by the present invention is slightly lower than that of the BAM standard glue, and the uniformity and stability are good, which can completely replace the BAM standard glue.

It should be noted that although the technical solutions of the present invention are described with specific examples, those skilled in the art can understand that the present invention should not be limited thereto.

Having described various embodiments of the present invention, the foregoing description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and alterations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principle of each embodiment, practical application or technical improvement in the market, or to enable other ordinary skilled in the art to understand each embodiment disclosed herein.

Claims (10)

1. A standard reference rubber material, which is characterized by comprising a rubber base material, an ethylene-vinyl acetate copolymer, a vulcanizing agent, naphthenic oil and tire powder; wherein,,

the total mass portion of the rubber base material is 100 portions, the content of the ethylene-vinyl acetate copolymer is 5-20 portions, the content of the vulcanizing agent is 2-5 portions, the content of the naphthenic oil is 15-30 portions, and the content of the tire powder is 50-100 portions.

2. The standard reference rubber material of claim 1, wherein the rubber substrate comprises butadiene rubber and natural rubber; preferably, the butadiene rubber is contained in an amount of 40 to 60 parts by weight and the natural rubber is contained in an amount of 40 to 60 parts by weight based on 100 parts by weight of the total rubber base material.

3. The standard reference glue material according to claim 1 or 2, further comprising one or a combination of two or more of a reinforcing agent, an active agent, an anti-aging agent, and an accelerator; preferably, the content of the reinforcing agent is 50-75 parts, the content of the active agent is 5-15 parts, the content of the accelerator is 2-5 parts, and the content of the anti-aging agent is 2-15 parts based on 100 parts by weight of the total mass of the rubber substrate.

4. A standard reference gel material according to claim 3, wherein the reinforcing agent comprises calcium carbonate and/or white carbon black.

5. The standard reference gel material of claim 3 or 4, wherein the active agent comprises one or a combination of more than two of diethylene glycol, polyethylene glycol, stearic acid, magnesium oxide, zinc oxide.

6. The standard reference gel material of any one of claims 3-5, wherein the anti-aging agent comprises one or a combination of two or more of 2, 4-trimethyl-1, 2-dihydroquinoline polymer, 1, 2-bis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionyl ] hydrazine, tetrakis [ β - (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] pentaerythritol ester, 4' -thiobis (6-tert-butyl-3-methylphenol), distearyl thiodipropionate, and dilauryl thiodipropionate.

7. The standard reference gel material of any one of claims 3-6, wherein the accelerator comprises one or a combination of two or more of N-cyclohexyl-2-benzothiazole sulfenamide, N-t-butyl-2-benzothiazole sulfenamide, 2' -dibenzothiazyl disulfide, tetramethylthiuram monosulfide, 2-mercaptobenzothiazole, tetramethylthiuram disulfide.

8. A method of preparing a standard reference gel material according to any one of claims 1 to 7, comprising the step of mixing the components of the standard reference gel material.

9. The method of manufacturing according to claim 8, characterized in that the method of manufacturing comprises:

mixing the components of the standard reference rubber material, and then mixing to obtain a mixed rubber;

refining the rubber compound to obtain a rubber compound;

and carrying out compression molding vulcanization molding on the mixed rubber sheet to obtain the standard reference rubber material.

10. Use of a standard reference gel material according to any one of claims 1-7 in a roller abrader wear test.