use of special carbon blacks to gain unique properties and
Higher DBP number leads to higher viscosity, higher hardness, higher modulus, and higher electrical conductivity. Higher DBP numbers also mean a better dispersing black and a reduction in calendar and extruder swell. High structure blacks are known for their good extrusion properties like low nerve, smooth surfaces, with sharp corners and edges.
Dibutyl Phthalate - an overview | ScienceDirect Topics
The maximum DEHP level for drinking water is determined by US EPA as 0.006 mg l 1, based on reproductive difficulties, liver problems, and increased risk of cancer in adult animals. Oral intermediate exposure for DEHP is 0.1 mg kg 1 day 1, based on reproductive effects in adult animals.
Studies of Energetic and Non‐Energetic Plasticizers
There is up to 60 % increase in TS and modulus while elongation is reduced by 20 %. Pressure index increases from 0.159 to 0.310 for DBP to DEGDN based propellant. The study shows that high performance high burning rate propellant can be designed with DEGDN. Volume 47, Issue 12 December 2025 e202500217 Related Information
Session 7: Simultaneous Compliance and Minimizing
DBP-=Potential for negative impacts to DBP levels/control DBP+/-=Potential impacts to DBP levels/control may be positive or negative depending on circumstance GWR=Groundwater Rule LCR=Lead and Copper Rule LT2ESWTR=Long Term 2 Enhanced Surface Water Treatment Rule Stage 2 DBP=Stage 2 Disinfection and Disinfection
Design and synthesis of polyetherimides as a flame-retarded
Synthesis of DOPO-containing bisphenol (DBP) The synthesis process of DBP is illustrated in Scheme S2Scheme S2. THPE (3.06 g, 10 mmol), DOPO (10.8 g, 50 mmol) and p-TSA (0.43 g, 2.5 mmol) were placed into a round-bottomed flask equipped with a nitrogen inlet and mechanical stirrer, and the reaction was conducted at 130 °C for 12 h.
- Is DBP used in polychloroprene rubber?
- The Risk Assessment for DBP (ECB, 2004) specifies that DBP is used in some polychloroprene rubber and nitrile rubber, but not in all polychloroprene (neoprene) or nitrile rubbers. New information on actual uses is not available. DBP is used extensively in the adhesives industry to plasticise polyvinyl acetate (PVA) emulsions.
- Why is carbon black incorporated into rubber?
- The strong enhancement of the high strain modulus by incorporating carbon black into rubber must be attributed to the in-rubber structure, which is a direct measure for the occluded rubber–rubber, which is shielded from the deformation of the matrix leading to an increase in effective filler volume.
- What is the reinforcement effect in filler-loaded rubber?
- Despite the fact that carbon black is not only the most widely used but also the oldest active filler in rubber compounds and that a huge amount of research work has been carried out to characterize, describe and understand this kind of filler, the reinforcement effect in filler-loaded rubber is not satisfactorily explained.
- How does dynamic strain affect the modulus of filled rubber?
- The modulus of filled rubbers decreases with increasing applied dynamic strain up to intermediate amplitudes. A detailed study of the low frequency dynamic properties of filled natural rubber was carried out by Fletcher and Gent and was later extended by Payne , .
- Is there a correlation between carbon black surface and rubber properties?
- No direct correlation has been demonstrated between chemical groups on the carbon black surface and rubber related properties , , . In the case of carbon black the filler–polymer interaction is mainly of physical nature (physisorption). The surface activity can be influenced by heat treatment.
- What is a Rubber-Process-Analyzer (RPA)?
- The Rubber-Process-Analyzer , (RPA, Alpha Technologies) allows a very reliable and detailed investigation of the dynamic behavior on a much easier and faster way than the common dynamic analysis of vulcanizates.
