China's forestry waste and agricultural surplus resources are abundant. In addition to papermaking, textile, feed and other uses, a considerable part can be used as biomass solid energy to replace the diminishing fossil energy such as coal and petroleum.
Actmix®Polymer-bound Pre-dispersed Rubber Chemicals and addivitives
Polymer-bound pre-dispersed rubber chemicals and additives are generally used for the automotive sealing strips, rubber hose, conveyor belt, damping, sealing etc rubber technical parts, and rubber tyres; which has mixed with the EPDM, SBR, NBR, ACM, ECO or IR. These kind of Pre-dispersed Rubber Additives are more and more popular because of the excellent dispersion and dust-free than powder form rubber chemicals.
Advantage of Actmix®Polymer-bound pre-dispersed rubber chemicals and additives:
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· 3. Saving mixing time.
· 4. Stable physical properties.
· 5. Convenient to auto measuring procedures.
· 6. Safer and healthier to operators.
Actmix®Pre-dispersed rubber chemicals and additives masterbatch product range:
· 1. Thiazole, Thiuram, Dithiocarbamate, Guandine and Thiourea accelerators.
· 2. Vulcanizing agent
· 3. Anti-oxidant and Scorching retarders
· 4. Blowing Agent and promoter
· 6. Non-Nitrosaminee Accelerator. ZDTP-50, TP-50, Retarder E-80,TBzTD-70 etc.
China's forestry waste and agricultural surplus resources are abundant. In addition to papermaking, textile, feed and other uses, a considerable part can be used as biomass solid energy to replace the diminishing fossil energy such as coal and petroleum. China's biomass fuel solid molding technology has been researched for more than 20 years. In the 1990s, it was mainly concentrated on spiral extrusion molding machines. This molding method has serious spiral wear of the forming cylinder and the forming feed, short life and energy consumption. Big, low productivity and other shortcomings. The currently widely used ring-molding roller extrusion type pellet forming technology effectively solves the problems of high energy consumption and low productivity, and has become the mainstream of development. However, the critical part ring mold has a short service life and high cost, which has become one of the bottlenecks restricting the development of particle forming technology. In this paper, the force analysis of the key part ring mold of the pellet forming machine is carried out, aiming to provide a theoretical basis for the optimal design of the ring mold.
1. Ring molding roller extrusion type pellet molding
When the ring die and the pressure roller component work, the ring die is driven by the motor to rotate, and the pressure roller rotates around the fixed central axis under the frictional force. The wedge-shaped space formed by the wood material with certain particle size and water content after pulverization and drying is pressed by the ring-shaped die and the pressure roller, and undergoes complicated deformation processes such as rearrangement position, plastic rheology and elastoplastic deformation. According to the process of molding the wood particles, it can be divided into three areas: a bulk material zone, a deformation compaction zone and an extrusion forming zone. The molding process is shown in Figure 1.
2. Force analysis of the inner surface of the ring mold during the forming process
In the force analysis of the inner surface of the ring mold, for the convenience of discussion, the reinforcing effect of the reinforcing ring and the die hole on the ring mold is neglected, and it is regarded as a thick-walled ring of equal section.
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4 Conclusion
(1) It can be seen from the formula (3) that the size of the deformation pressing region is only related to the two friction coefficients and the diameter ratio of the ring molding roller.
(2) It can be seen from the formula (18) that the taper angle of the granulation hole must be less than 2 arctan (1/f), otherwise the particles cannot be extruded out of the granulation hole.
(3) It can be known from the formula (9) that it is necessary to select ring molds having different aspect ratios by pressing particles having the same size and different densities.
(4) It can be seen from equations (11) and (21) that the pressure in the granulation pores is exponentially distributed, and the pressure on the slope of the cone angle is distributed as a power function.
Sanmenxia Futong New Energy produces and sells mechanical equipment such as pellet machine, wood pellet machine, feed pellet machine and straw briquetting machine.
Information from: Wood chip granule ring die force analysis http://
Http://news.chinawj.com.cn Submission:
Pre-dispersed Rubber Additives
Pre-dispersed Rubber Additives,Pre-dispersed Masterbatch Rubber Additive,Pre-Dispersed Polymer Bound rubber,Pre-dispersed Rubber Accelerator
Ningbo Actmix Rubber Chemicals Co., Ltd. , http://www.actmixchemicals.com