阅读说明：本技术 一种白色非发泡轻质橡塑共混鞋底胶料及其制备方法 (White non-foamed light rubber-plastic blended sole rubber material and preparation method thereof ) 是由 龚城建 龚晓春 龚航逸 于 2021-08-09 设计创作，主要内容包括：本发明公开了一种白色非发泡轻质橡塑共混鞋底胶料,所述白色非发泡轻质橡塑共混鞋底胶料由以下重量百分比的组分构成：异戊二烯橡胶5～15%、高顺式聚丁二烯橡胶15～25%、乳液聚合丁苯橡胶5～15%、热塑性弹性体10～20%、无机金属盐补强剂4～8%、轻质回收粉10%～20%、石油系增塑剂15～20%、活化体系3～4%、交联体系1.5～3.0%和老化防护体系0.5～1.5%。本发明中,首先,所提供胶料的配方中含有10%～20%的塑料回收粉,回收粉组分占比较大,既能降低材料成本又能降低材料总体的密度,其次,白色轻质胶料具有密度小于1g/cm～(3)、耐磨好、耐水解性好和加工性能好的特点,适用于通用成型加工工艺,在轻质鞋底方面有良好的应用前景及巨大潜在经济价值。(The invention discloses a white non-foamed light rubber-plastic blended sole rubber material which comprises the following components in percentage by weight: 5-15% of isoprene rubber, 15-25% of high cis-polybutadiene rubber, 5-15% of emulsion polymerized styrene-butadiene rubber, 10-20% of thermoplastic elastomer, 4-8% of inorganic metal salt reinforcing agent, 10-20% of light recovery powder, 15-20% of petroleum plasticizer, 3-4% of activation system, 1.5-3.0% of crosslinking system and aging protectorIs 0.5 to 1.5%. According to the invention, firstly, the formula of the provided rubber compound contains 10-20% of plastic recovery powder, the components of the recovery powder have a large proportion, the material cost can be reduced, the overall density of the material can be reduced, and secondly, the white light rubber compound has a density less than 1g/cm 3 The wear-resistant and hydrolysis-resistant sole has the characteristics of good wear resistance, good hydrolysis resistance and good processability, is suitable for a general forming and processing process, and has good application prospect and huge potential economic value in the aspect of light soles.)

1. The white non-foamed light rubber-plastic blended sole rubber material is characterized by comprising a white non-foamed light rubber-plastic blended sole rubber material, wherein the white non-foamed light rubber-plastic blended sole rubber material is composed of the following components in percentage by weight: 5-15% of isoprene rubber, 15-25% of high cis-polybutadiene rubber, 5-15% of emulsion polymerization butadiene styrene rubber, 10-20% of thermoplastic elastomer, 4-8% of inorganic metal salt reinforcing agent, 10-20% of light recovery powder, 15-20% of petroleum plasticizer, 3-4% of activation system, 1.5-3.0% of crosslinking system and 0.5-1.5% of aging protection system.

2. The white non-foamed light-weight rubber-plastic blend sole compound according to claim 1, wherein the thermoplastic elastomer is an ethylene-octene copolymer.

3. The white non-foamed light rubber-plastic blended sole rubber material according to claim 1, wherein the inorganic metal salt reinforcing agent is formed by mixing 30-40% of titanium dioxide and 60-70% of white carbon black.

4. The white non-foamed light-weight rubber-plastic blended sole compound according to claim 1, wherein the light-weight recycled powder is plastic recycled powder, namely ethylene-vinyl acetate copolymer.

5. The white non-foamed light-weight rubber-plastic blended sole compound according to claim 1, wherein the petroleum-based plasticizer is a No. 50 long paraffin oil.

6. The white non-foamed light-weight rubber-plastic blended sole material according to claim 1, wherein the activating system is one or more of zinc oxide, stearic acid, polyethylene glycol 4000, diethylene glycol, bis- [3- (triethoxysilyl) propyl ] -tetrasulfide.

7. The white non-foamed light weight rubber-plastic blend sole compound according to claim 1, characterized in that the crosslinking system comprises one or more of sulfur, thiazoles, sulfenamides, thiuram accelerators.

8. The white non-foamed light-weight rubber-plastic blend sole compound according to claim 1, wherein the aging prevention system is one or both of styrenated phenol and 2-mercaptobenzimidazole.

9. The preparation method of the white non-foamed light rubber-plastic blended sole compound according to claim 1, characterized by comprising the following steps:

s1, preparing materials: weighing the components according to the proportion of claim 1;

s2, first mixing: putting isoprene rubber, high cis-polybutadiene rubber, a thermoplastic elastomer, an activation system and an aging protection system into an internal mixer, carrying out hammer lifting and cleaning after first-round hammer mixing, then putting the rest components except sulfur and an accelerant, carrying out hammer lifting and cleaning again after second-round hammer mixing, then discharging to a cutting machine after third-round hammer mixing, and discharging to obtain rubber compound;

s3, second mixing: and (3) performing roller wrapping on the rubber compound prepared by the first mixing on an open mill, adding sulfur and an accelerator, performing rubber turning until the sulfur and the accelerator are completely dispersed in the rubber, and performing triangular wrapping, rolling and sheet discharging in sequence to prepare the white non-foamed light rubber-plastic blended sole rubber material.

10. The method for preparing the white non-foamed light rubber-plastic blended sole rubber according to claim 9, wherein the activating system and the aging prevention system need to be repeatedly put into the internal mixer for many times.

11. The method for preparing a white non-foamed light rubber-plastic blended sole compound as claimed in claim 9, wherein the time for the first roller ram mixing is 30-60 seconds, the time for the second roller ram mixing is 200-300 seconds, and the time for the second roller ram mixing is 40-80 seconds.

12. The method for preparing a white non-foamed light rubber-plastic blended sole compound according to claim 9, wherein the time for the turnover of the rubber is 240-300 seconds.

Technical Field

The invention relates to the technical field of rubber soles, in particular to a white non-foamed light rubber-plastic blended sole sizing material and a preparation method thereof.

Background

With the continuous development of shoe materials, comfort and portability become an important standard for people to select shoes, so that high elasticity and light weight become the main development direction of the current sole materials. At present, materials such as PU, EVA and the like are mostly adopted to be light soles in the market, although the PU soles and the EVA foamed soles are light in weight, the low-temperature resistance, the skid resistance and the aging resistance are poor, rubber as a traditional sole material has good wear resistance and skid resistance, has environmental adaptability such as high temperature resistance and low temperature resistance, but has the defects of overweight weight, uncomfortable wearing and the like, so the light and comfortable light rubber soles become a new research direction.

Generally, the specific gravity of a rubber non-foamed sole is generally more than 1.1, a sole with a simple design can not feel the weight of a shoe, but when the sole is more complicated and the material consumption is larger, such as a labor protection shoe and the like, the sole can obviously feel that the weight of the shoe is too large and the shoe feels uncomfortable, the density of the sole is a key index for judging whether the sole is light enough, and the smaller the density is, the smaller the weight of the sole is, the smaller the corresponding weight of the shoe is, namely the light weight is.

At present, most sports shoes adopt a foaming technology to reduce the density of soles so as to achieve a light effect, but soles of common shoes still mainly adopt non-foaming rubber, and white soles are whitened by increasing the amount of titanium dioxide, so that the density is inevitably increased, and the weight of the soles and the shoes is further increased.

Disclosure of Invention

The invention aims to: in order to solve the problems of heavy weight and discomfort of the traditional rubber sole, the white non-foamed light rubber-plastic blended sole rubber material and the preparation method thereof are provided.

In order to achieve the purpose, the invention adopts the following technical scheme:

the white non-foamed light rubber-plastic blended sole rubber material comprises a white non-foamed light rubber-plastic blended sole rubber material, and the white non-foamed light rubber-plastic blended sole rubber material comprises the following components in percentage by weight: 5-15% of isoprene rubber, 15-25% of high cis-polybutadiene rubber, 5-15% of emulsion polymerization butadiene styrene rubber, 10-20% of thermoplastic elastomer, 4-8% of inorganic metal salt reinforcing agent, 10-20% of light recovery powder, 15-20% of petroleum plasticizer, 3-4% of activation system, 1.5-3.0% of crosslinking system and 0.5-1.5% of aging protection system.

As a further description of the above technical solution:

the thermoplastic elastomer is an ethylene-octene copolymer.

As a further description of the above technical solution:

the inorganic metal salt reinforcing agent is prepared by mixing 30-40% of titanium dioxide and 60-70% of white carbon black.

As a further description of the above technical solution:

the light recovery powder is plastic recovery powder, namely ethylene-vinyl acetate copolymer.

As a further description of the above technical solution:

the petroleum plasticizer is No. 50 long paraffin oil.

As a further description of the above technical solution:

the activating system is one or more of zinc oxide, stearic acid, polyethylene glycol 4000, diethylene glycol and bis- [3- (triethoxysilyl) propyl ] -tetrasulfide.

As a further description of the above technical solution:

the crosslinking system comprises one or more of sulfur, thiazoles, sulfenamides and thiuram accelerators.

As a further description of the above technical solution:

the aging protection system is one or two of styrenated phenol and 2-mercaptobenzimidazole.

A preparation method of a white non-foamed light rubber-plastic blended sole rubber material comprises the following steps:

s1, preparing materials: weighing the components according to the proportion of claim 1;

s2, first mixing: putting isoprene rubber, high cis-polybutadiene rubber, a thermoplastic elastomer, an activation system and an aging protection system into an internal mixer, carrying out hammer lifting and cleaning after first-round hammer mixing, then putting the rest components except sulfur and an accelerant, carrying out hammer lifting and cleaning again after second-round hammer mixing, then discharging to a cutting machine after third-round hammer mixing, and discharging to obtain rubber compound;

s3, second mixing: and (3) performing roller wrapping on the rubber compound prepared by the first mixing on an open mill, adding sulfur and an accelerator, performing rubber turning until the sulfur and the accelerator are completely dispersed in the rubber, and performing triangular wrapping, rolling and sheet discharging in sequence to prepare the white non-foamed light rubber-plastic blended sole rubber material.

As a further description of the above technical solution:

the activating system and the aging protection system need to be repeatedly put into the internal mixer for many times.

As a further description of the above technical solution:

the mixing time of the first wheel ram is 30-60 seconds, the mixing time of the second wheel ram is 200-300 seconds, and the mixing time of the second wheel ram is 40-80 seconds.

As a further description of the above technical solution:

the time for turning the glue is 240-300 seconds.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. according to the invention, the formula of the provided rubber compound contains 10-20% of plastic recovery powder, and the components of the recovery powder have a large proportion, so that the material cost is reduced, and the overall density of the material can also be reduced;

2. in the invention, the density of the sole prepared according to the example mixture ratio is less than 1g/cm³The weight of the sole can be greatly reduced, and the elasticity and the wear resistance of the sole are not reduced, so that the comfort and the service life of the shoe are both considered.

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

The invention provides a technical scheme that: a white non-foamed light rubber-plastic blended sole rubber material comprises the following components in percentage by weight: 13% of isoprene rubber, 19% of high cis-polybutadiene rubber, 12% of emulsion polymerized styrene-butadiene rubber, 13% of thermoplastic elastomer, 13% of light recovery powder, 7% of inorganic metal salt reinforcing agent, 15.5% of petroleum plasticizer, 3.8% of activating system, 2.8% of crosslinking system and 0.9% of aging protection system.

Specifically, the thermoplastic elastomer is an ethylene-octene copolymer, the inorganic metal salt reinforcing agent is prepared by mixing titanium dioxide and white carbon black according to the mass ratio of 1:2, the light recovery powder is ethylene-vinyl acetate copolymer recovery powder, the petroleum plasticizer is paraffin oil No. 50, the activating system is zinc oxide, stearic acid, diethylene glycol, polyethylene glycol and bis- [3- (triethoxysilyl) propyl ] -tetrasulfide according to the mass ratio of 5:0.8:1:1, the crosslinking system is sulfur, dibenzothiazole disulfide, tetramethyl thiuram monosulfide and an anti-yellowing agent FST MAC-1389 according to the mass ratio of 13:3:1.5:4, and the aging protection system is styrenated phenol.

Specifically, the preparation method of the white non-foamed light rubber-plastic blended sole rubber material comprises the following steps:

s1, weighing each component according to the proportion of claim 1;

s2, putting isoprene rubber, high cis-polybutadiene rubber, a thermoplastic elastomer, an activation system and an aging protection system into an internal mixer, lifting and cleaning a hammer after first-wheel hammer mixing, then putting the rest components except sulfur and an accelerant, lifting and cleaning the hammer again after second-wheel hammer mixing, discharging to a discharging machine after third-time hammer mixing, and discharging to obtain rubber compound;

s3, performing roller wrapping on the mixed rubber prepared by the first mixing on an open mill, adding sulfur and an accelerant, performing rubber turning until the sulfur and the accelerant are completely dispersed in the rubber, and sequentially performing triangular wrapping, rolling and sheet discharging to obtain the white non-foamed light rubber-plastic blended sole rubber material.

Specifically, the activation system and the aging protection system need to be repeatedly put into the internal mixer for multiple times, the mixing time of the first round of hammer is 30-60 seconds, the mixing time of the second round of hammer is 200-80 seconds, the mixing time of the second round of hammer is 40-80 seconds, and the rubber turnover time is 240-300 seconds. Example 2

The invention provides a technical scheme that: the white non-foamed light rubber-plastic blended sole rubber material comprises a white non-foamed light rubber-plastic blended sole rubber material, and the white non-foamed light rubber-plastic blended sole rubber material comprises the following components in percentage by weight: 5% of isoprene rubber, 20% of high cis-polybutadiene rubber, 8% of emulsion polymerized styrene-butadiene rubber, 18% of thermoplastic elastomer, 19% of light recovery powder, 5.5% of inorganic metal salt reinforcing agent, 18% of petroleum plasticizer, 3.0% of activation system, 2.5% of crosslinking system and 1.0% of aging protection system.

Specifically, the thermoplastic elastomer is an ethylene-octene copolymer, the inorganic metal salt reinforcing agent is prepared by mixing titanium dioxide and white carbon black according to the mass ratio of 1:2, the light recovery powder is ethylene-vinyl acetate copolymer recovery powder, the petroleum plasticizer is paraffin oil No. 50, the activating system is zinc oxide, stearic acid, diethylene glycol, polyethylene glycol and bis- [3- (triethoxysilyl) propyl ] -tetrasulfide according to the mass ratio of 5:1:1:1, the crosslinking system is sulfur, dibenzothiazyl disulfide, tetramethyl thiuram monosulfide and yellowing resistant agent FST MAC-1389 according to the mass ratio of 13:2:2:4, and the aging protection system is styrenated phenol.

Specifically, the preparation method of the white non-foamed light rubber-plastic blended sole rubber material comprises the following steps:

s1, material preparation: weighing the components according to the proportion of claim 1;

s2, mixing for the first time: putting isoprene rubber, high cis-polybutadiene rubber, a thermoplastic elastomer, an activation system and an aging protection system into an internal mixer, lifting and cleaning a hammer after first-wheel hammer mixing, then putting the rest components except sulfur and an accelerant, lifting and cleaning the hammer again after second-wheel hammer mixing, then discharging to a cutting machine after third-time hammer mixing, and discharging to obtain the rubber compound.

S3, second mixing: and (3) performing roller wrapping on the rubber compound prepared by the first mixing on an open mill, adding sulfur and an accelerator, performing rubber turning until the sulfur and the accelerator are completely dispersed in the rubber, and performing triangular wrapping, rolling and sheet discharging in sequence to prepare the white non-foamed light rubber-plastic blended sole rubber material.

Specifically, the activation system and the aging protection system need to be repeatedly put into the internal mixer for multiple times, the mixing time of the first round of hammer is 30-60 seconds, the mixing time of the second round of hammer is 200-80 seconds, the mixing time of the second round of hammer is 40-80 seconds, and the rubber turnover time is 240-300 seconds.

Example 3

The invention provides a technical scheme that: the white non-foamed light rubber-plastic blended sole rubber material comprises a white non-foamed light rubber-plastic blended sole rubber material, and the white non-foamed light rubber-plastic blended sole rubber material comprises the following components in percentage by weight: 10% of isoprene rubber, 18% of high cis-polybutadiene rubber, 10% of emulsion polymerized styrene-butadiene rubber, 15% of thermoplastic elastomer, 15% of light recovery powder, 5.5% of inorganic metal salt reinforcing agent, 20% of petroleum plasticizer, 3.5% of activating system, 1.0% of accelerator, 1.0% of vulcanizing agent and 1.0% of aging protection system.

Specifically, the thermoplastic elastomer is an ethylene-octene copolymer, the inorganic metal salt reinforcing agent is prepared by mixing titanium dioxide and white carbon black according to the mass ratio of 1:2, the light recovery powder is ethylene-vinyl acetate copolymer recovery powder, the petroleum plasticizer is paraffin oil No. 50, the activating system is zinc oxide, stearic acid, diethylene glycol, polyethylene glycol and bis- [3- (triethoxysilyl) propyl ] -tetrasulfide according to the mass ratio of 7:2:1.4:1.4:1, the crosslinking system is sulfur, dibenzothiazyl disulfide, tetramethyl thiuram monosulfide and an anti-yellowing agent FST MAC-1389 according to the mass ratio of 2.5:1.4:0.2:1, and the aging protection system is styrenated phenol.

Specifically, the preparation method of the white non-foamed light rubber-plastic blended sole rubber material comprises the following steps:

s1, material preparation: weighing the components according to the proportion of claim 1;

s2, mixing for the first time: putting isoprene rubber, high cis-polybutadiene rubber, a thermoplastic elastomer, an activation system and an aging protection system into an internal mixer, lifting a hammer for cleaning after first-round hammer mixing, then putting the rest components except sulfur and an accelerant into the internal mixer, lifting the hammer for cleaning again after second-round hammer mixing, then discharging the mixture to a discharging machine for discharging sheets after third-round hammer mixing, and preparing the rubber compound.

S3, second mixing: and (3) performing roller wrapping on the rubber compound prepared by the first mixing on an open mill, adding sulfur and an accelerator, performing rubber turning until the sulfur and the accelerator are completely dispersed in the rubber, and performing triangular wrapping, rolling and sheet discharging in sequence to prepare the white non-foamed light rubber-plastic blended sole rubber material.

Specifically, the activation system and the aging protection system need to be repeatedly put into the internal mixer for multiple times, the mixing time of the first round of hammer is 30-60 seconds, the mixing time of the second round of hammer is 200-80 seconds, the mixing time of the second round of hammer is 40-80 seconds, and the rubber turnover time is 240-300 seconds.

TABLE 1

As can be seen from Table 1, the white non-foamed light rubber-plastic blended sole rubber material obtained by 5-15% of isoprene rubber, 15-25% of high cis-polybutadiene rubber, 5-15% of emulsion polymerized styrene-butadiene rubber, 10-20% of thermoplastic elastomer, 4-8% of inorganic metal salt reinforcing agent, 10-20% of light recovery powder, 15-20% of petroleum plasticizer, 3-4% of activating system, 1.5-3.0% of crosslinking system and 0.5-1.5% of aging protection system in the technical scheme of the invention has good wear resistance and less than 1g/cm³The density of (a), namely the performance of the white non-foamed light rubber-plastic blended sole sizing material.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.