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Use of pre-dispersed additives to improve the quality of mixing


Public properties: MBS-NBR/PVC the masterbatch The other is related to quality,[link widoczny dla zalogowanych], testing and pre-preparation of compound compatibility. EPDM / EVA binder system commonly used in the standard have shown that the viscosity at low shear force decreased strongly dependent on temperature. The system was originally used as a general-purpose adhesive is the active substance used in all occasions, designed for quick release. However, NBR and CR such as polar elastomers, this combination shows a non-compatibility and migration phenomenon can be detected. The left of the photo (Figure was 75% MBSEPM / EVA and pure NBR PVC masterbatch mixing with a combination of tests. Clearly seen as the mother did not feed into one; the contrary,[link widoczny dla zalogowanych], the NBR matrix multiple cracking, some parts of the separation occurs. Another sample is shown on the right (Figure is used for the corresponding agent and NBR binders and plasticizer prepared. Under the same conditions, mixing experiments show that after a few weeks in close engagement with the tape. This shows that with a special adhesive system to replace common system is an appropriate way, without any trouble in the case to meet their functional requirements. 9 pre-dispersed carbon black powder pre bonding agents to consider the last case of carbon black as a carrier pre-preparation. Most industrial carbon black has a large oil absorption value. Even as the N-550 and N-772 carbon black in such semi-liquid can absorb its weight in 40% to 50%. The situation of mineral carriers such DL. The same kind of carbon black dispersed droplets can aggregate their hole. Mixing using the appropriate conditions to ensure that carbon black particles from the modern rubber technology lI20 Volume 33, 2007 destruction, and to maintain the same delivery conditions. Further development of the product is carbon black powder was rod-shaped particles. Bonding involves the application of carbon black additive 3 aspects. Through the use of mineral / powder to achieve the principle of pre-dispersed liquid. This is an alternative, if the mineral compound must be excluded from the outside, then the distribution of pre-invasive carbon black is better than the original state of untreated carbon black. Adding the liquid is almost completely carbon black powder into the dust to glue together. Pre-bonded carbon black carbon black preparations specific to greatly reduce the pollution, which can be a normal N 339 and naphthenic oil as the base material of the pre-trial preparations proven shaking. After shaking,[link widoczny dla zalogowanych], the bonding of carbon black powder with a screw top jar is also not on the edge of the pollution,[link widoczny dla zalogowanych], and 339 cans containing N were typical of a fine particle layer pollution. SBR carbon black based on the mix we have been mixing test,[link widoczny dla zalogowanych], the operating oil with carbon black-part pre-mixed formulation containing 60% N performance with 339 and 40% of a naphthenic oil NytexNY810 mix the same formula be compared. Mixing process with the formula set out in Table 4. Table 4, mixing carbon black powder-based test (continued from page 42) and tread deformation in a specific location, on average, very high accuracy, the error is only �� 0.03mm, whether in static or dynamic, under all measurable. All the test were all digital, and can be used to analyze the FEM. And commercial detection system (Aramis) compared to the shape of the sample surface is not strictly required. On the other hand, the limitations of the system is only partially in Figure 9 for the two tests measure the reference Kneader curve. The different torque curve, especially in the accession plasticized N / filler later. Compared with the mix A, mix B processing is simple, to allow adding carbon black rubber plasticizer has accelerated the pace, and the peak torque has been advanced. Also ahead of the intended torque value. By the characteristics of these curves come to the conclusion that the CB / plasticizer allows faster by adding carbon black powder and plasticizer, reducing the requirements on the mixer to achieve a lower peak power, or is mixing the same time improve the distribution. Figure 9 compared with LuvoplastNY810CB40B laboratory test results Kneader 10 Summary and Outlook In general, we can draw the following conclusions: �� filler dispersion, especially in the pre-dispersed additives on the mixing quality has a decisive influence; �� Pre-dispersed additives can make the batch mixing process by technical improvements in many areas, help to reduce the production cost of the mixing process; �� Pre-preparation technologies for the rubber industry will respond to the challenges of technical and economic offers a variety of means. Compiled from RubberWorld, 2005,233 (2) :34-39. Volume (determined by laser tracking) approximate equilibrium deformation of the average. Overall, the measurements convenient, fast, inexpensive, relatively easy to measure, and can carry out repeated measurements. Compiled from RubberWorld2006, 233 (4) :18-20, 71.
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