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Product Description
Vulcanization is a chemical process in which the rubber is heated with sulphur, accelerator and activator at 140-170°C. The process involves the formation of cross-links between long rubber molecules so as to achieve improved elasticity, resilience, tensile strength, viscosity, hardness and weather resistance Eco friendly yoga mat making machine Anti-fatigue yoga exercise matt machine High quality Yoga Mat EVA foam machine Logo Eco Friendly Yoga sports Mat making machine colorful Interlocking Soft Gym Yoga mat machine Exercise EVA Foam Mat making machine
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High quality Yoga Mat EVA foam machine Logo Eco Friendly Yoga sports Mat making machineVulcanization with sulfur
The most common vulcanizing methods depend on sulfur. Sulfur, by itself, is a slow vulcanizing agent and does not vulcanize synthetic polyolefins. Accelerated vulcanization is carried out using various compounds that modify the kinetics of crosslinking;this mixture is often referred to as a cure package. The main polymers subjected to sulfur vulcanization are polyisoprene (natural rubber) and styrene-butadiene rubber (SBR), which are used for most street-vehicle tires. The cure package is adjusted specifically for the substrate and the application. The reactive sites-cure sites-are allylic hydrogen atoms. These C-H bonds are adjacent to carbon-carbon double bonds (>C=C<). During vulcanization, some of these C-H bonds are replaced by chains of sulfur atoms that link with a cure site of another polymer chain. These bridges contain between one and several atoms. The number of sulfur atoms in the crosslink strongly influences the physical properties of the final rubber article. Short crosslinks give the rubber better heat resistance. Crosslinks with higher number of sulfur atoms give the rubber good dynamic properties but less heat resistance. Dynamic properties are important for flexing movements of the rubber article, e.g., the movement of a side-wall of a running tire. Without good flexing properties these movements rapidly form cracks, and ultimately will make the rubber article fail.Comfort TPE Yoga Mat machine Non-slip Sports Fitness Pad making machine Pilates mat making line Fitness Mat machine Anti-skid Sports matt machine EVA Foam mat machine EVA Yoga Mat machine colorful Interlocking Soft Gym Yoga mat machine Exercise EVA Foam Mat making machine Extra Thick 15mm gym EVA foam machine Anti-Tear TPE EVA NBR yoga foam mat making line Pilates exercise using EVA foam making machine interlocking gym EVA yoga workout mat machine Home Used Pilates mat machine High quality Yoga Mat EVA foam machine Logo Eco Friendly Yoga sports Mat making machine Vulcanization of polychloroprene
The vulcanization of neoprene or polychloroprene rubber (CR rubber) is carried out using metal oxides (specifically MgO and ZnO, sometimes Pb3O4) rather than sulfur compounds which are presently used with many natural and synthetic rubbers. In addition, because of various processing factors (principally scorch, this being the premature cross-linking of rubbers due to the influence of heat), the choice of accelerator is governed by different rules to other diene rubbers. Most conventionally used accelerators are problematic when CR rubbers are cured and the most important accelerant has been found to be ethylene thiourea (ETU), which, although being an excellent and proven accelerator for polychloroprene, has been classified as reprotoxic. The European rubber industry has started a research project SafeRubber to develop a safer alternative to the use of ETU.
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Home Used Pilates mat machine Eco Non Slip Esterilla Yoga mat making machie Exercise TPE Yoga Matt making line High quality colorful Interlocking Soft Gym Yoga mat machine Exercise EVA Foam Mat making machine 1 Parameter for EVA TPE NBR foam products Vulcanizing Press Machine | Parameter/model | JSD-
1300×2000X1 | JSD-
1200×2500×1 | JSD
1500×2000×1 | JSD
2000×3000×1 |
| Total Pressure(MN) | 5.6 | 7.5 | 10 | 18 |
| Plate Size(mm) | 1300×2000 | 1200×2500 | 1500×2500 | 2000×3000 |
| Daylight(mm) | 400 | 400 | 400 | 400 |
| Daylight Qty | 1 | 1 | 1 | 1 |
| Piston Stroke(mm) | 400 | 400 | 400 | 400 |
| Unit Area Pressure(Mpa) | 2.15 | 2.5 | 3.3 | 3 |
| Main Motor Power(KW) | 8 | 9.5 | 11 | 26 |
| Overall Dimension(mm) | 2000×1860×2500 | 2560×1700×2780 | 2810×1550×3325 | 2900×3200×2860 |
| Weight(KG) | 17000 | 20000 | 24000 | 66000 |
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2 Configuration for EVA TPE NBR Foam products Vulcanizing Press Machine, Rubber and plastic EVA TPE NBR curing Press
A:Frame: The material is Q345 steel welded, and using Co2 protection welding process. high strength, no air hole, not easy broken, then using the tempering process, to release the internal stress. can not out of shape, at last using the CNC machining center treatment.
B:Heating pipes: Stainless steel ,long using life, material is SUS304
C:Plunger: Vanadium and titanium Alloy Chilled Cast Iron, High hardness (68~72HS )and good abrasion , resistance, can not easy broke the seals
D:Hydraulic cylinder: Nodular cast iron, the material is QT-500, hardness 68~72 HS, using the annealing treatment, and flaw detection process choose the best one.
E:The heating plate :35# steel
F: Thermal baffle: Silicon 3 Calcium plate, not easy broke seals
G: Valve: Cartridge valve, not easy broken and no need maintain brand from Huade
H:Hydraulic pump: Brand from YUCI YUKEN HYDRAULICS Co., LTD
I: Low-voltage apparatus: The brand from Schnaeider or Mitsubishi Zhengtai
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what is twin screw extruder Co-rotating twin-screw extruder : Due to the co-rotating twin-screw has the opposite speed at the meshing point, one screw pulls the material into the meshing gap, and the other screw pushes the material out of the gap, resulting in material from one screw turns to the other screw and advances in a "∞" shape. Since the gap of the meshing zone is small, the speed of the meshing screw and the groove are opposite in direction, so that the cutting speed is high, and the self-cleaning effect is good, that is, any accumulated material adhering to the screw can be scraped off, thereby The residence time of the material is very short, so the twin screw extruder is mainly used for compounding and pelletizing .The Applications of Co-rotating Twin Screw Extruder
1.Glass fiber reinforced, fuel barrier palletizing (For example PA6, PA66, PET, PBT, PP, and PC reinforced flame retardant)
2.Highly filled material granulation (For example PE, PP filled with 75%CaCo)
3.Granulation of heat-sensitive materials (For example PVC, XLPE cable material)
4.Intense color masterbatch (For example filled with 50% color powder)
5.Antistatic masterbatches, alloys, coloring, low-fill co-mingling granulation
6.Cable material granulation (For example sheathing material and insulation material)
7.XLPE pipe material granulation (For example masterbatches for hot water crosslinking)
8.Thermoset plastic compounding and extrusion (For example phenolic resin, epoxy resin, and powder coating)
9.Hot melt adhesive, PU reactive extrusion palletizing (For example EVA hot melt adhesive and polyurethane)
10.K resin, SBS de-volatile granulation | mixing modification | PE,PP,PS+SBS,PA+EPDM,PP+NBR,NVA+silicon rubber,ect |
| PE,PA,PC,CPE+ABS(ALLOY),ABS+TPU,PBT+PET,PE+PP,ect |
| Filling modification | PE,PP,EVA,ect+Calcium carbonate,talcum power,titanic powder,
ABS,PC,PS,ect+aluminum hydroxide,magnesium hydroxide,
antimony oxide |
| PP,PA,ABS+ferrous powder,sulphuric powder,ceramic powder |
| PE PP ABS AS PA EVA Functional masterbatch | PP,PA,ABS,PBT,ect+burning agent and other auxiliary agents:combustion-supporting machine pellets |
| PP,PE,PS ect +starch:de-composing machine pellets |
| PE+fog-preventing dipper,stabilizer:dual-prevention machine pellets |
| PE,EVA,ABS+carbon black:black machine pellets |
| Colored masterbatch | PE,PP,ABS,AS,PA,EVA,PET+pigment and auxiliary |
| glass fibers/ carbon fibers reinforcement | PP,PBT,ABS,AS,PA,PC,POM,PS,PET,ect+long fibres,small fibres,carbon fibres,crystals and so on |
| Various cables | HDPE,LDPF,LLDPE,MDPE,EVA,PVCect+Insulating cables,coatings,PE peroxide,silicon alkyl crossing cables |
| Special materials | EVA heat-melting glue,polyurethane,fluorin rubber,fluorin plastics,PPcigarette filtering material and TPR sole material |
| Reaction extruding | Polyamide condensate,polyamide melting polymerization,polyamide polyethrne-adding,polycarbonate condensate,ect |
| Exhausting and Volatilization | Polystyrene oxide,high-absorbing resin,chlorine sulphur polyethylene |
| Powder paint | Polyester,ring oxide,lactide,polyurethane,acrylate |
Address:
Shanghe Avenue, Tuqiao Town, Chunhua Street, Jiangning District, Nanjing, Jiangsu, China
Business Type:
Manufacturer/Factory
Business Range:
Industrial Equipment & Components, Manufacturing & Processing Machinery, Packaging & Printing, Service, Textile, Tools & Hardware
Management System Certification:
ISO 9001
Company Introduction:
Nanjing Jiesida Extrusion Equipment Co., Ltdis a high and new technological enterprise focusing on research design, manufacture, marketing, and service.
Our company owns dozens of senior engineers who are devoted in the field of twin screw extruder. We constantly absorb the advanced technologies from home and abroad, emphasize on the training and introducing of talents, win-win cooperation with the research institutions. According to the special process requirements of the customers, we can supply the matched equipment technology design.
Depending on rich technology experience, we always keep the high quality, high technology level and perfect after-sales service. So wide praise and trust are gained from our clients. Meanwhile, we have built good cooperation relationship with the clients from different areas. Our products are sold to different areas in China. We are focusing on the developing, research and innovation to manufacture the latest and top quality products, in order to meet the higher demands from Chinese and international markets.
Our products mainly contain: Single screw extruder, twin screw extruder, underwater granulator, plastic granulator, elastomer material granulator, nylon granulator, plastic recycling granulator, rubber and masterbatch granulator etc. The products are mainly suitable for ABS, PE, PP, PVC, PA, PC/ABS, PET, PS, HIPS, EPS, PU, PBT, LCP, TPE, TPR, TPU, TPV etc. Plastics flame-retardant, reinforcement, filling, compounding etc.
Our perfect afte-sales service can help customers to resolve the urgent trouble instantly. To meet customers′ process requirements, we can also modify the equipment accordingly. We have gained the high reputations from our customers, which greatly encourage us to grow together with the developed plastic industries.
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