A plasticizer-resistant strengthening composition based on polyester
A. A. Matveev T. P. Poisova Abstract Studies on creating a plasticizer-resistant strengthening composition for fastening highly filled polymeric compositions based on polybutadiene rubber...
A plasticizer-resistant strengthening composition based on polyester
Studies on creating a plasticizer-resistant strengthening composition for fastening highly filled polymeric compositions based on polybutadiene rubber plasticized by transformer oil were carried out. The kinetic rheological regularities of curing the strengthening composition around polyester-urethane rubber with end epoxy-urethane groups were studied, and its physical and mechanical
A plasticizer-resistant bonding composition based on
Abstract A study on creation of plasticizer-resistant bonding composition for bonding of a highly filled polymer composition, which is based on butadiene nitrile rubber plasticized by a polar plasticizer, with a rigid multilayer substrate has been performed.
Plasticizing of isotactic polypropylene upon addition
The elongation at break is proportional to ΔTg, while the strength at break increases linearly with increasing tie-molecule fraction (which increases with decreasing oil content), being independent...
A Study of the Properties of Unsaturated Polyketone as a
An adhesive composition based on unsaturated polyketone cured by quinol ester and epoxy-containing components was developed. It was established that the adhesive composition based on unsaturated polyketone limitedly swells in transformer oil and has two glass-transition temperatures.
- What are low molecular weight plasticizers?
- Low molecular weight plasticizers are added before or during the processing to reduce the melt processing temperature. However, these low molecular weight plasticizers may have some drawbacks, such as volatility, high water solubility, and insufficient compatibility with CA.
- What are plasticizer characteristics?
- Plasticizer characteristics determine not only the compatibility but also the amount which can be added to the polymer while ensuring the thermodynamic stability of the mixture. Thermodynamic stability means the absence of plasticizer exudation at temperature changes, mechanical stresses, and pressure.
- What is the molecular weight of ca plasticizers?
- The molecular weight of CA plasticizers ranges from 178 g mol −1 (diacetin) to 378 g mol −1 (tricresyl phosphate), with an average value of ∼260 g mol −1. It should be noted that high molecular weight plasticizers showed limited compatibility in CA , .
- Which plasticizer has a good plasticizing efficiency?
- Both plasticizers provided a satisfactory plasticizing efficiency, such as DEP, due to their low viscosity and ease of diffusion into CA, which enables a large processing window and increases the material's flexibility. CA with 30 wt% GTA displayed a slightly higher elastic modulus than CA with 30 wt% GDA (E = 2.1 GPa and 1.9 GPa, respectively).
- Can plasticizers reduce material degradation over time?
- The design of new plasticizers compatible with the polymer at high concentrations, tailored to be effective in lowering the glass transition temperature, and with a low tendency to migration could considerably reduce material degradation over time.
- Why are plasticizers added to ca?
- Plasticizers are added to CA to increase workability, prevent degradation under processing conditions and ensure thermo-mechanical properties suitable for the intended final application. Moreover, inexpensive and non-toxic solvents enable its processing into fibers, films, and solid blocks.
