Reclaimed rubber ( reclaimed rubber)
　　Leftover bits that sulphurate already for whom raw materials process into, is it sure plastic degree, rubber that can be reused to have with rubber products production. Abbreviated as the recycled glue. According to using and abolishing the glue differently, the recycled glue is divided into cover tyres, the inner tube of a tyres, glue shoes,etc.. The recycled glue can replace and catch the glue to use for the rubber products partly, in order to economize and grow glue and charcoal black some performance that help to improve processing characteristics and rubber products. The recycled course abolishes the glue in the plasticizer ( Soften the pharmaceutical and activator) , oxygen, hot and comprehensive function that machinery shear make some strand of vulcanized rubber and is it unite course ruptured to order to hand in. Soften pharmaceutical play expand and plastification function, the commonly used one coal tar, pine tar, petroleum department soften pharmaceutical, cracked residual oil. The activator can shorten recycled time, reduce and soften pharmaceutical consumption. Commonly used work turns pharmaceutical into fragrant clan sulphur alcohol and zinc salt and fragrant clan bisulphide. The production process of recycled glue includes crushing, regeneration ( Desulphurization) With refining 3 processes.
　Except that such traditional recycled method, is developing and abolishing the glue to freeze and crush, making into different grains size rubber powder, the ones that used as rubber packing are by abolishing the new method of glue directly.
　Abolish the danger of the rubber and effective recycled method
　　The treatment which abolishes the rubber is one of nowadays serious problems which people face. In order to meet the material performance demand for improving constantly, rubber towards the high strength, wear-resisting, stability and ageing-resistant direction are being developed, but caused the question that the rubber after discarding can't be degraded naturally over a long time at the same time, a large number of old and useless rubbers have caused than plastic pollution (pollute whitely) The black of more difficult treatment is polluted. Have wasted valuable rubber resources on the other hand.
　The megaton abolishes rubbers and emerges to know what's what every year in the whole world, quantity so enormous, how deal with and already become the problem that the whole society has generally paid close attention to effectively to their. For this reason, divided by regard discarded rubber products piling up like a mountain as the fuel is burnt, since 1910, the scientists of various countries study for effective abolishing the recycled treatment technology of rubber one after another. The recycled glue means the old and useless vulcanized rubber is through such physical chemistry course as crushing, heating, mechanical treatment,etc., make it turn from elastic state into having plasticity, viscidity, rubber that can be sulphurated again. The essence of the recycled course is under the comprehensive function on hot, oxygen, mechanical function and chemistry of the recycled pharmaceutical and physics function,etc., is it sulphurate glue network is it degrade to destroy, fracture position is it is it unite key to pay, is it is it unite macromolecule key of key to pay to have too to have to make.
　The recycled method of rubber can be divided into two kinds on the whole: Physics regeneration and chemical regeneration
Physics regeneration
　Physics regeneration utilizes and energy, for instance strength, hot - strength, cold - strength, microwave, supersound,etc., Dr.eye: make it unite three-dimensional network of rubber low piece of member not to pay. Besides can cause real rubber regeneration in microwave and supersounding, other physics methods can only be a kind of technology of crushing, namely make glue powder. Use as the glue powder again rubber at the trade, can only as mend getting strong. Utilizing such physics energy as the microwave, supersound,etc. can reach the satisfactory recycled result of rubber, but the equipment is expected much, the energy consumption is great.
　　Crush the law in normal atmospheric temperature
　　Normal atmospheric temperature crush law is it process temperature of 5 degrees Centigrade in person crushing through mechanical function rubber make first law of crushing, glue of powder under the high temperature slightly in 50 to mean generally.
　Crush the law in low temperature
　　Low temperature crush law to adopt refrigeration medium, adopt the liquid nitrogen to make the rubber freeze under glass temperature mainly, carry on a kind of valid method to crush under the low temperature.
Crush the law in wet law or the solution
　Wet law or solution crush law whether one wait for medium is it is it produce method, glue of powder to crush to go on in solvent or solution.
　　Recycled law of microwave
　The recycled law of microwave is that one kind is not chemistry, recycled law of a step desulphurization of the machinery.
　Recycled law of ultrasonic wave
A clones the university and invents the recycled law of ultrasonic wave every year in l993, this law is to make use of high density energy field to destroy and hand in and unite the key and keep the main chain of molecule, thus achieve the recycled goal, the ultrasonic field can produce the high-frequency flexible stress in many kinds of medium, the high amplitude can cause the solid and cracked and liquid hole while shaking waves. The explanation in theory is: May acoustic hole function mechanism cause ultrasonic energy concentrate on some position, molecule of key, making destroys the hole place to change into the density of high-energy more than the ultrasonic field of the low-yield density.
　Recycled law of electron beam
　The recycled law of law of electron beam is mainly to utilize IIR unique ray sensitiveness, draw support from the high energy electron beam of the electronic accelerator, solve the effect of gathering to that it produces chemistry.
　Chemical regeneration
Chemical regeneration is to utilize chemical auxiliary, sulphur alcohol of for instance organic bisulphide, soda and metal,etc.,: under intensifying the condition, with the aid of mechanical force function, make the rubber handed in and united the key and is destroyed, achieve the recycled purpose. In the recycled course of chemistry, should use a large number of chemicals, these chemicals are nearly all bad and harmful under the high gentle high pressure.
Oil law, water oil law, recycled law of dynamic desulphurization of high-temperature high pressure
　Oil that law crush to abolish glue put recycled pharmaceutical into among the powder, is it sulphurate pot to pack into, and desulphurization, is it crush, is it smelt, refine, strain glue and produce block,etc. to pinch to go on afterwards under terms, 150MPa of * 4-5h, make the products finally. Water oil law has utilized glue powder and can be dissolved rapidly bloatedly under the high-pressure terms of high temperature, and dissolve much greater nature than under the low-voltage condition of the bloated degree. The difference between water oil law and oil law lies in the difference of stage of desulphurization mainly. New craft of a kind of regeneration that appeared at the beginning of the 1990s at the end of the eighties of the 20th century that the dynamic desulphurization law of high-temperature high pressure is domestic, it fetched water the oil law and head of the oil law abandoned short. The dynamic desulphurization law of high-temperature high pressure is the transmission adopting the energy and heat under the function of high-temperature high pressure and recycled pharmaceutical, finish the desulphurization course. Not merely desulphurization temperature is high for this law, and in the course of desulphurization, the supplies are in motion state all the time.
　De-link recycled pharmaceutical law
　　Can be said and give the recycled open-up brand-new concept and method of the rubber in the recycled pharmaceutical of De-link appearing on the market in recent years. This is that Malaysian scientist Sekhar doctor and Russian scientist Kormer doctor study a kind of recycled glue new technology invented together, its basic principle is to adopt a kind of recycled pharmaceutical De-link to make it react without destroying C-C key with S-S key, thus keep the rubber main chain macromolecule, only enable sulphurating the network and rupturing.
R.V recycled pharmaceutical law
　R.V recycled pharmaceutical law to shear function through machinery, make R.V rubber recycled pharmaceutical even parcel abolish the glue powder particle surface, through soak into function permeate glue powder among the particle, in order to reduce S-S is it unite key key can to pay, can untie S-S is it unite key instead of destroy S-C key and C-C key to pay within short time effectively, thus enable abolishing the glue powder and resume activation, change into this plastic recovery state, and keep the extremely high thing of original rubber.
　TCR recycled law
This law is to sneak into a small amount of plasticizer and recycled pharmaceutical while crushing the glue powder in the low temperature, then send into the powder mixer and deal with short time under the room temperature or the slightly high temperature. Method this advantage environmental pollution little saving effort and energy-conservation, so one rising recycled method.
　　Law of microbial desulphurization
　　The law of microbial desulphurization, already there are patent reports in Japan and Germany, this kind of method is to abolish rubbers and crush after certain grain size, put it into while containing the solution which bites the sulphur bacterium, make it carry on biochemistry to react in the air. Under biting the function of the sulphur bacterium, the sulphur key of the rubber particle surface ruptures, present the performance of the recycled glue.
Recycled law of strength chemistry
This kind known as " is it flow field react the control technology to cut off " abolish the recycled method of glue, its characteristic does not use the chemical drug, it carries on the recycled treatment which abolish the glue to only consume electric energy and water, through abolishing glue heat energy, pressure, cutting off strength, enable sulphurating the sulphur key of the glue (hand in and unite clicking) Rupture and become flexible new-type recycled glue with steady performance.
　Chinese reclaimed rubber manufacturing develops the briefing
　　China is a country that grows glue resources relatively in short supply, 50% of the consumption of recycled glue of every year in China needs to import from side to side, it is tasks that China struggles on without cease to look for the rubber raw material sources and alterate material. So, handle the old and useless rubber well properly conscientiously, to fully utilizing regenerated resources, getting rid of the shortage of the natural resources, reduce the environmental pollution, improving the people's living environment has extremely far-reaching positive meaning and realistic meaning. The reclaimed rubber has been the important raw materials of the world rubber industry all the time, on one hand it can replace rubbers, the ones that have alleviated the natural rubber are deficient seriously; Make the old and useless rubber realize retrieving and utilizing on the other hand, has solved the problem that the old and useless rubber pollutes the environment.
2006, China produces 1,650,000 tons of reclaimed rubber, accounts for 85% of the reclaimed rubber total output in the world. Until November of 2007, China can is it include tire, rubber overshoes, miscellaneous glue, light color, special-purpose, special type, seven major series 30 more than reclaimed rubber product of variety of exporting etc. to produce already; Already there are more than 700 enterprises of reclaimed rubber in the whole country, number of employees is up to 100,000; Have formed Pingyao, Fenyang of Shanxi, Yutian of Hebei, Cangzhou, Nantong of Jiangsu, such several pieces of scale as Wenzhou of Zhejiang, Ningbo,etc. exceed the 100,000 -ton reclaimed rubber production base; Have set up tire retrieving, disassembles, the processing, regeneration and streamlined industry chain of deep processing of abolishing.
　Chinese reclaimed rubber industry has already reached the leading level in the world in such respects as the production scale, scope of the enterprise, variety grade, technology, equiping forming a complete set, foreign exchange earning,etc.. After becoming the producing country of biggest reclaimed rubber in the world in the eighties of the 20th century, China has already ranked among industrially developed country's ranks of global reclaimed rubber.
　In January - December of 2005, Chinese reclaimed rubber manufacturing realizes adding up to total industrial output value of 5,044,555,000 yuan, increased by 104.00% in the same period compared with that of last year; Realized adding up to the income from sales of 4,493,894,000 yuan of the products, increased by 76.49% in the same period compared with that of last year; Realized adding up to total profit of 172,590,000 yuan, increased by 66.99% in the same period compared with that of last year.
　　In January - December of 2006, Chinese reclaimed rubber manufacturing realizes adding up to total industrial output value of 7,077,772,000 yuan, increased by 27.09% in the same period compared with that of last year; Realized adding up to the income from sales of 7,271,686,000 yuan of the products, increased by 45.18% in the same period compared with that of last year; Realized adding up to total profit of 287,409,000 yuan, increased by 35.92% in the same period compared with that of last year.
In January - November of 2007, Chinese reclaimed rubber manufacturing realizes adding up to total industrial output value of 8,579,511,000 yuan, increased by 34.81% in the same period compared with that of last year; Realized adding up to the income from sales of 8,165,563,000 yuan of the products, increased by 25.69% in the same period compared with that of last year; Realized adding up to total profit of 430,895,000 yuan, increased by 64.90% in the same period compared with that of last year.
　　Meanwhile, the recycled glue trade of China develops and still has low-level repeated construction serious, product structure is unreasonable and such problems as the policy is not implemented, so, Chinese recycled glue trade should adjust enterprise's structure, single out the best for support, pay attention to the adjustment of product structure and strive for the preferential policy to bring about an advance in trade.
As China formates the further development of the rubber industry, the output increases further, the price drops further, in addition the foreign synthetic rubber after the entry to WTO one is imported in a large amount, will assault the recycled glue market directly. In addition, as the Chinese glue powder production technology especially meticulous glue powder production technology being becoming better and approaching perfection day by day, the demand for glue powder of the market will be larger and larger. Predict the consumption of national rubber of 2010 about 2,950,000 tons, need recycled glue, glue powder 590,000 tons.