Preparation of high-quality wollastonite/natural rubber composites by atomization sputtering rapid drying process

Wet continuous mixing technology and extrusion rheological properties of carbon black/natural rubber composites

“…On the other hand, the dry rubber used in the DM is more viscous than flocculated NRL, the flocculated NRL has higher plasticity retention index and better flowability. 36 Meanwhile, the shear action of the doublerotor can weaken the interaction force between the rubber molecular chains, make it untangled, thereby improving the fluidity of the rubber and making it easier to process. Therefore, the FECM process effectively breaks the filler aggregates and increases the filler-rubber network, so the Payne effect is weakened and the processing performance is better.…”

“…This is related to the better fluidity of the NRL itself, the untangling of the rubber molecular chains by the shear, and the uniform dispersion of the fillers. 36 In dry mixing, the dry rubber has poor fluidity and the rubber molecular chains are difficult to untangle during mixing, meanwhile, the filler is easy to be agglomerated, resulting in partial early vulcanization crosslinking, so the M L is larger. There is a certain correlation between T 10 and scorch time, the larger the T 10 , the longer the scorch time, and the better the processing safety.…”

“…Conventional dry mixing is to mix rubber, filler, and additives in an internal mixer or open mill, and combine filler and rubber through strong shear force between rotors or rollers 4 . However, the aggregation of polar fillers is relatively serious during dry mixing, with rapid heat generation, easy scorching, high energy consumption, and serious dust pollution 5 . Wet mixing is the process in which the filler is made into water dispersion, fully mixed with latex in the liquid state, then flocculated, dewatered, and dried to finally prepare the rubber masterbatch 6–8 .…”

“…4 However, the aggregation of polar fillers is relatively serious during dry mixing, with rapid heat generation, easy scorching, high energy consumption, and serious dust pollution. 5 Wet mixing is the process in which the filler is made into water dispersion, fully mixed with latex in the liquid state, then flocculated, dewatered, and dried to finally prepare the rubber masterbatch. [6][7][8] Wet mixing not only significantly improves the dispersion of reinforcing fillers, and prepares high-performance rubber compounds with high filler content, but also reduces energy consumption and adapts to the development of green and energy conservation.…”

Self‐flocculation and its mechanism of natural rubber latex by accelerant‐modified silica

“…12 Wet mixing is an effective method to improve the interfacial compatibility between silica and rubber and to make silica more evenly dispersed in the rubber. [13][14][15][16][17][18][19] Acid coagulation is the most traditional coagulation process in the wet mixing of rubber latex. Acid flocculants increase H + and reduce the pH of latex, leading to flocculation.…”