阅读说明：本技术 废硫化橡胶生产复原橡胶方法 (Method for producing recovered rubber from waste vulcanized rubber ) 是由 叶益飞 王玉 于 2021-11-25 设计创作，主要内容包括：本发明介绍废硫化橡胶通过新理念,新技术,新工艺方法生产复原橡胶,整个过程用熔解温度与机械力的原理.并且分子热产生温度与温度产生分子热(其为辅助温度)过程.并以高效利用和循环利用为核心,减量化,利用化,资源化为原则,低消耗,无排放,高效率为基本特征,这一方式得到大多数人的认可,也意味着原来的生产方式面临淘汰,谁能更早掌握新的生产方式,制定新的市场规则,谁就将在下一个时代占领先机.废硫化橡胶蕴含着丰富的能源,合理的资源利用将为我国节省大量的能源,同时也可以解决废硫化橡胶回收利用的难题.本发明解决了世界性难题,将会对我国橡胶行业可持续发展,提高我国橡胶领域的国际影响作出巨大贡献。(The invention introduces the waste vulcanized rubber to produce the recovered rubber by a new concept, a new technology and a new process method, the whole process uses the principle of melting temperature and mechanical force, and the process of generating molecular heat (which is auxiliary temperature) by the molecular heat generates the temperature and the temperature, and the method takes high-efficiency utilization and cyclic utilization as the core, reduces the quantity, utilizes the molecular heat, realizes the principle of resource utilization, has low consumption, no emission and high efficiency as basic characteristics, and the method is accepted by most people, also means that the original production mode faces elimination, and can be used for mastering new production modes earlier to establish new market rules, so that the waste vulcanized rubber occupies the precedent in the next era, contains rich energy, reasonable resource utilization can save a large amount of energy for China, and can also solve the problem of recycling the waste vulcanized rubber. Greatly contributes to improving the international influence of the rubber field in China.)

1. A process for preparing the regenerated rubber from waste sulfurized rubber features that the bonds of waste sulfurized rubber are broken by the fusion temp and mechanical force, and the molecular heat and temp are used to generate molecular heat (auxiliary temp) to generate sulfurized rubber powder under the action of fusion temp and mechanical force, i.e. the CS-CS bonds are broken thoroughly.

2. The process according to claim 1, wherein all the waste vulcanized rubber is used.

3. The method of claim 1, wherein the temperature is the melting temperature.

4. A process according to claim 1, wherein the rubber molecule chains are adapted such that the C-C bonds are naturally weakest (U) at 90 to 110 degrees and the butyl groups are weakest (v) at 85 degrees.

5. The process according to claim 1, wherein the rubber vulcanizate is used in which the CS-CS bonds are completely broken at natural 90 to 119 degrees and the butyl groups at 85 to 119 degrees are called vulcanized rubber powder under the action of mechanical forces, and the rubber vulcanizate cannot be completely broken but are called vulcanized rubber particles.

6. A process according to claim 1, characterized in that the vulcanized rubber powder is used, i.e. the C-S bond is broken completely at 120 ℃ for both natural and butyl groups and is brought into the unvulcanized state under the action of mechanical forces, called the vulcanizate.

7. The process according to claim 1, wherein the rubber is a resin vulcanizate, i.e. a rubber with a complete break at 85 degrees or 90 degrees of the bonds CS1-CS1, C-S1, S1-S1, which is referred to as a vulcanizate under mechanical force.

8. A method according to claim 1, characterized in that the resource energy is considered to vary from quantitative to qualitative.

9. A method according to claim 1, characterized in that the resources are considered to be always endlessly circulatable as long as the processing is appropriate.

Technical Field

The invention relates to a new concept, a new technology and a new process method for producing recovered rubber by using waste vulcanized rubber, belonging to the field of recycling, environmental protection and reutilization of waste vulcanized rubber.

Background

Rubber is widely applied to the fields of industry, agriculture, national defense, civil use, transportation, aviation, aerospace and the like, all countries in the world take rubber as an important strategic resource of the country, the country is a country with quite deficient rubber resources and has serious external dependence, the rubber consumption reaches 1000 million tons every year, simultaneously, the generated waste vulcanized rubber exceeds 2000 million tons, the waste vulcanized rubber is rapidly increased at a speed of 10 percent and is more and more important for human beings and even people to live in a recycling way, so the waste vulcanized rubber utilization is always a concern problem of all countries in the world, and in order to treat, developed countries in Europe and America invest a large amount of funds and manpower, but the problem is not solved so far, and the existing treatment methods in China are also eliminated by developed countries in Europe and America.

There are two main international views on the bond breaking mechanism of waste vulcanized rubber

1. Bond energy difference of chemical bond (1): due to the difference of atomic structures, the chemical bond energy of C-S bond and S-S bond is less than that of C-C bond on the rubber main chain, the S-S bond and the C-S bond can be selectively broken by controlling the heating temperature during rubber regeneration, while the rubber main chain formed by the C-C bond is not broken, but because the bond energy difference between the three is not very large, the cross-linking bond can be hardly guaranteed to be selectively broken by simply applying heat, and the rubber main chain is not broken.

2. Difference in elastic coefficient of chemical bond (2): because atoms of C-C bond, C-S bond and S-S bond have different structures and the elastic coefficients and chain lengths of the bonds are different, the C-S bond and the S-S bond can be selectively broken by controlling shearing by utilizing the difference of the elastic coefficients of the C-C bond, the C-S bond and the S-S bond, but is difficult to selectively break the cross-linking bond by utilizing the method of the difference of the elastic coefficients because the content of the C-C bond in the vulcanized rubber is far higher than that of the C-S bond and the S-S bond.

The invention considers that the broken bonds of the vulcanized rubber are CS-CS bonds and C-S bonds, and the C-S bonds can be completely broken only if the CS-CS bonds are completely broken, the resin vulcanized rubber bonds CS1-CS1, C-S1 and S1-S1 are broken at the same temperature, and if the S-S bonds are provided, the C-C bonds are broken continuously only if the C-S bonds and the S-S bonds are completely broken at the same temperature.

Disclosure of Invention

The invention uses the principle of melting temperature and mechanical force to break the bond of vulcanized rubber.

The invention is realized by the following process that the vulcanized rubber generates molecular heat (which is auxiliary temperature) at the molecular heat generating temperature and the temperature and produces the vulcanized rubber powder under the action of the melting temperature and the mechanical force, namely CS-CS bond is completely broken.

The invention is applicable to all waste vulcanized rubbers.

The temperatures shown in the present invention are all melting temperatures.

The invention shows that the rubber molecular chain, i.e. the C-C bond, is naturally weakest (U) at 90 degrees to 110 degrees, and the butyl is weakest (v) at 85 degrees

The invention shows that vulcanized rubber, namely, the natural 90-119 DEG broken by CS-CS bond and the natural 119-85-119 DEG broken by butyl must be called vulcanized rubber powder under the action of mechanical force, and the vulcanized rubber can only be called vulcanized rubber particles if the vulcanized rubber cannot be broken completely.

The invention shows that vulcanized rubber powder, namely natural rubber with a completely broken C-S bond and butyl with a 120-degree C-S bond, is required to be in an unvulcanized state under the action of mechanical force and is called as recovered rubber.

The invention shows that the resin vulcanized rubber, namely CS1-CS1, C-S1, S1-S1 bond is completely broken by 85 degrees or 90 degrees and is in an unvulcanized state under the action of mechanical force, and the rubber is called as recovered rubber.

The invention considers that the resource can change from quantitative to qualitative

The present invention recognizes that resources may be cycled indefinitely, whenever processing is appropriate.

By contrast, the reclaimed rubber bond is broken, the natural temperature is 240 degrees, the butyl temperature is 290 degrees, and the resin butyl temperature is 350 degrees, while the reclaimed rubber bond is broken, the natural and butyl temperatures are 120 degrees, and the resin butyl temperature is 85 degrees or 90 degrees, and the properties of the reclaimed rubber are higher than those of the reclaimed rubber, and the reclaimed rubber does not generate secondary pollution and can replace the original rubber.

The production method of the invention

1, tearing method: the tearing method can produce the waste vulcanized rubber into vulcanized rubber powder, and the waste resin butyl into the recovered rubber.

2. A twin screw continuous process: the vulcanized rubber particles are produced into vulcanized rubber powder, and the second step is produced into the recovered rubber.

3. High-speed method: producing vulcanized rubber powder from vulcanized rubber particles, and producing recovered rubber in the second step

4. A twin screw continuous process: and vulcanizing the rubber powder to produce the recovered rubber.

5. High-speed method: the vulcanized rubber powder is produced into a recovered rubber, and the resin rubber particles are produced into a recovered rubber.

Detailed Description

The invention will now be further described with reference to specific embodiments

Example 1. waste vulcanized rubber or waste resin vulcanized rubber was put into a recovery tearing machine to be torn, but it was necessary to achieve a tearing condition, i.e., a certain length, which could not be achieved for additional production of vulcanized rubber particles, the waste vulcanized rubber was naturally broken at about 93 degrees and butyl at about 85 degrees, i.e., CS-CS bond was completely broken to produce vulcanized rubber powder, the waste resin vulcanized rubber was simultaneously broken at about 85 degrees or 90 degrees, i.e., CS1-CS1, C-S1, S1-S1 bond, and expanded to produce recovered rubber, followed by cooling, discharge, and specific equipment.

Example 2 vulcanized rubber particles were fed into a twin screw continuous extruder for recovery, the first step was carried out at a temperature of not more than 110 ℃ and the twin screws were extruded from different directions and fully meshed to produce vulcanized rubber powder, the second step was carried out at a temperature of not more than 118 ℃ and the third step was carried out at a temperature of 120 ℃ to produce recovered rubber by cutting the vulcanized rubber powder, i.e., the C-S bond was completely broken and expanded.

Example 3 vulcanized rubber particles or vulcanized rubber powder were put into a recovery high-speed machine, the vulcanized rubber particles or vulcanized rubber powder at the bottom were continuously fed upward along the wall by high-speed rotation of blades, the vulcanized rubber particles or vulcanized rubber powder fed from blades were rotated at high speed by a high-speed cutter set, the high-speed cutter set rotated at 10000 rpm/50000 rpm for four groups, which failed to generate resonance and molecular heat, and the temperature was 120 degrees, i.e., C-S bonds were completely broken and expanded to produce recovered rubber, followed by cooling and discharge, specifically relating to equipment.

Example 4 rubber by using the method, rubber is put into an internal mixer for hot milling for several minutes, then vulcanized rubber powder or vulcanized rubber particles are put into the internal mixer for internal mixing, the rubber internal mixing is used for generating the temperature of the vulcanized rubber powder of 120 ℃, the temperature of the vulcanized rubber particles reaches 120 ℃, the temperature is reduced to 90 ℃, the temperature is raised to 120 ℃, the temperature is expected to be repeated, the mesh number of the vulcanized rubber particles is taken as the standard, namely CS-CS bond, C-S bond is thoroughly broken and expanded to produce the rubber and recovered rubber combined rubber, and then the material is discharged and cooled, which is particularly related to equipment.

The foregoing detailed description of the embodiments of the present invention is provided for the purpose of illustration only and not for the purpose of limiting the same, and therefore, although the present invention has been described in detail with reference to the foregoing examples, may be modified or substituted equally as the present invention without departing from the scope of the present invention.

Comparing files:

[1] DluznscKIP R.peroxide Vulcanization of Elastomers [ J ]. Rubber Chemistry & Technology, 20011, 74 (3): 451 to 492

[2] Fukummori K, Matsushita M.Material cycling technology of cross lined rubber waste [ J ]. R & D Rew Toyota, CRDL, 2003, 38 (11): 39 one and 47.