· Lower ratios of main‐chain to crosslink scission and good processability (mainly characterized by modest Mooney viscosity) for the DGTR samples, and high tensile strengths and elongations at break for the RDGTR samples are obtained via appropriately combining the barrel temperature and screw speed. High quality DGTR sample with tensile strength and .
· Somaschi, N. et al. Nearoptimal singlephoton sources in the solid state. Nat. Photon. 10, 340–345 (2016). CAS Article Google Scholar Ding, X. et al. Ondemand single photons with high ...
Solidstate shear pulverization processing resulted in enhanced isothermal crystallization rates of at least 27% for PP to as much as 85% for low density polyethylene (LDPE). The Young's modulus of PCL increased by 65% after pulverization, and moderate changes were observed for the other polymers. After SSSP, the oxygen permeability of LDPE decreased by 17%, PCL by .
The screw design alters the applied shearing force on the material. In this shearing process a significant amount of heat is generated which must be removed to ensure that the properties of the end product remain unaffected. In the extrusion process, .
Justia Patents To Aid Dispersion Or Prevent Chemical Reaction, Deliquescence, Agglomeration Or Frothing US Patent for Solid state shear extrusion pulverization Patent (Patent # 5,397,065) Solid state shear extrusion pulverization . Oct 28, 1993 Illinois Institute of Technology. A process and apparatus for pulverization of natural and synthetic polymeric material by .
Pulverization of rubber granulates using the solid Know More. A single screw extruder was used to pulverize rubber granulates at high shear and compression without using cryogenic fluid for cooling This process, solidstate shear extrusion SSSE, is based on the large compressive shear deformation of rubber granulates, which results in the storage of a large amount of strain .
These SSSP blends are easily processed by postSSSP melt extrusion; for an SSSP blend with 50 wt% UHMWPE, we observe more than a factor of 1000 increase in viscosity at a shear rate of s 1 but less than a factor of 5 increase at 100 s 1, the latter being more typical of meltprocessing operations.
technologies involving ultrasonic waves [9], twin screw extruder [10, 11] and solid state shear pulverization [12] have been tried to partially devulcanize the waste rubber. From the practical appliion point of view, it is important to know how the devulcanized waste rubber behaves during the process of revulcanization when mixed
· Solidstate shear pulverization (SSSP) is a novel processing method, which utilizes a modified twinscrew extruder that operates under nearambient temperature conditions. During SSSP, polymers are processed in their solid state using high compressional and shear forces that cause repeated fragmentation and fusion of the material.
· A novel, continuous process, solid‐state shear pulverization (S3P), efficiently mixes blends with different component viscosities. Melt mixing immiscible polymers or like polymers of different molecular weight often requires long processing times. With a batch, intensive melt mixer, a polyethylene (PE)/polystyrene (PS) blend with a viscosity ratio (low to .
A novel processing technique combining singlescrew extrusion (SSE) and solidstate shear pulverization (SSSP) is employed for producing polyolefin/soy flour biocomposites with synergistic property e...
in a system for pulverizing solid material into smaller particles, the system including a screw extruder which conveys the solid material to an extruder output, and a drive motor, an improved pulverizer head comprising a rotatable rotor and a stationary dish having opposed smooth, nonabrading surfaces that are spaced apart to provide a fixed gap .
· The pulverizer was a pilotplant/researchscale Berstoff twinscrew extruder (25 mm screw diameter, length/diameter = ) modified with a cooling system (Budzar Industries WC3 chiller operating at −6 °C); the same apparatus was used in previous SSSP studies [ .
Isayev et al. have investigated the devulcanization of NR, SBR, EPDM and silicone rubber in a single screw extruder equipped with an ultrasound source on the die. The effects of processing parameters and ultrasonic conditions are reported, and they have found that a single screw extruder was an efficient method [1416].
· Solidstate shear pulverization is a continuous, onestep process that was initially conceived as a means to convert pelletized or flaked polymeric feedstock into powder [40, 41]. The material being pulverized may be composed of .
In particular, we employ solidstate shear pulverization (SSSP). Optical and electron microscopy reveals excellent CNC dispersion with strongly suppressed degradation relative to composites made by melt mixing. Effective dispersion leads to major increases in Young's modulus, including a 69% increase in 90/10 wt% LDPE/CNC composites relative to