The effect of plasticizers on the rate of crystallization
The effect of plasticizers on the rate of crystallization of rubbers - ScienceDirect Polymer Science U.S.S.R. Volume 17, Issue 4, 1975, Pages 810-817 The effect of plasticizers on the rate of crystallization of rubbers ☆ N.Ye. Dobrokhotov , M.F. Bukhina , T.V. Litvinova Add to Mendeley
The effect of plasticizers on the rate of crystallization
This effect is dependent on the chemical nature and quantity of the plasticizer used. It has been found that there is a linear relationship between the variation in log ~t and Tg on plasticization, the more the plasticizer lowers Tg the less it retards crystallization (or the more it accelerates it) [1].
The Effect of Different Acrylic-Based Rubbers on the
The effects of acrylic-based rubbers on the rate of crystallization of PLA and ST were studied using isothermal DSC and POM by cooling down from the molten state (180 °C) and holding the temperature at 90 °C. Figure 6 shows the nucleation onsets (t onset) and crystallization half-times (t 1/2) for PLA and PLA/rubber blends.
Effects of plasticizers on the strain-induced crystallization
Effects of liquid isoprene (LIR-50) and naphthenic oil (NPO) on the strain-induced crystallization (SIC) measured by in situ synchrotron wide-angle X-ray diffraction (WAXD) and mechanical properties of vulcanized natural rubber (NR) and synthetic polyisoprene (IR) were studied.
Influence of Plasticizers on the Properties of Natural
The influence of the chemical structure of the oil (paraffinic, naphthenic and aromatic) and oil loading on carbon black and silica filled compounds was studied considering the following aspects:...
- How do ester plasticizers affect crystallization rate?
- Unfortunately, the use of ester plasticizers does not usually help prevent crystallization and, in many cases, will actually accelerate the crystallization rate. Crystallization effects and Tg must both be considered when designing neoprene materials for low-temperature service.
- What is the role of plasticizers in freezing resistance?
- The role of plasticizers in freezing resistance is that it enters between the polymer molecules and reduces interaction among the molecules which in turn decrease the cohesive energy. The rubber materials with improved freezing resistance can be used for aero tires, air spring of express trains in railways, track mat of railway, automobiles, etc.
- What changes in TG of rubber blends based on natural rubber and polybutadiene?
- This article deals with the changes in Tg of rubber blends based on natural rubber and polybutadiene rubber of varying vinyl content having different types and content of plasticizers, different curing systems and its effect on physico-mechanical properties to improve its freezing resistance.
- What is crystallization in neoprene rubber?
- Crystallization in neoprene rubber is the ability of the rubber chains, or portions thereof, to align themselves into a well-ordered crystalline structure. Among synthetic elastomers, the ability to crystallize under suitable conditions of stress and temperature is confined to relatively few materials, one of which is neoprene rubber.
- What happens if rubber elastomers become plastic?
- The rubber will be embrittled and become plastic like, reducing or eliminating the ability of the material to act as a seal or cause fracture by external forces like deflection or shock. Some elastomers posses inherently good low temperature properties, whereas others do not.
- Which plasticizer is best for freezing resistance of rubber?
- Also, oil-type plasticizers like paraffinic oil, P#2 and aromatic oil, A#2 have compatibility with rubber. However, it did not affect much of the main chain of rubber matrix chemically. So, it is well understood that DOA was the most proper plasticizer for improvement of freezing resistance of rubbers.
