chemical characteristics, leaching, and stability of the
- Classification:Chemical Auxiliary Agent
- Purity:95.9%
- Type:Rubber additive antioxidant
- Appearance:Dark purple granule
- Softening point:80-100℃
- Application:Used in Tires,Industrial Rubber Products
- Production Capacity:1000 Metric Tons per Month
- Package:20kg kraft bags,500kgs/pallet
a nation-wide study for the occurrence of ppd antioxidants,the concentrations of total ppds (σppds) and 6ppd-q in urban trunk road dust samples were in the ranges of 7.90–727 and 3.00–349 ng/g, with median concentrations of 68 and 49 ng/g, respectively. 6ppd and 6ppd-q are the dominant components in most road dusts.
aqueous leaching simulations from tire tread wear particles (twps) indicated short term release of ∼5.2 μg 6ppd per gram twp over 6 h under flow-through conditions. aqueous stability tests observed a slight-to-moderate loss of 6ppd over 47 days (26 ± 3% loss) for ph 5, 7 and 9.
6ppd: its role in tire manufacturing and environmental impact
published oct 19, 2024. 6ppd, or n-(1,3-dimethylbutyl)-n’-phenyl-p-phenylenediamine, is a chemical compound widely used in tire manufacturing. its primary function as an antioxidant enhances tire durability by preventing degradation from environmental factors like heat, oxygen, and ozone. however, recent studies have raised concerns about
new evidence of rubber-derived quinones in water, air for sale,the results all showed that, compared with pure antioxidant ippd, the same mass of mixed antioxidants could indeed improve the thermal-oxidative stability of nr.
rubber anti-aging agent antioxidant 6PPD (4020) supplier
6ppd is an organic chemical widely used as stabilising additive (or antidegradant) in rubbers, such as nr, sbr and br; all of which are common in vehicle tires. although it is an effective antioxidant it is primarily used because of its excellent antiozonant performance.
Best Price Rubber Antioxidant 6PPD CAS No.: 793-24-8,we demonstrate the catalytic upgrade of 6ppd to safe chemicals and the valorization of crumb rubber to aromatics and carbon black using microwave-assisted pyrolysis.
ozone resistance of three natural antioxidants in solution
the results revealed that two natural antioxidants, namely sa and α-tocopherol, closely matched the performance of 6ppd and could be promising candidates for replacing p-phenylenediamine antioxidants as environmentally friendly antiozonants in the future.
transformation products of tire rubber antioxidant 6ppd for sale,6ppd, a tire rubber antioxidant, poses substantial ecological risks because it can form a highly toxic quinone transformation product (tp), 6ppd-quinone (6ppd), during exposure to gas-phase ozone. important data gaps exist regarding the structures, reaction mechanisms, and environmental occurrence of tps from 6ppd ozonation.
transformation products of tire rubber antioxidant 6ppd for sale
abstract: 6ppd, a tire rubber antioxidant, poses substantial ecological risks because it can form a highly toxic quinone transformation product (tp), 6ppd-quinone (6ppd), during exposure to gas-phase ozone. important data gaps exist regarding the structures, reaction mechanisms, and environmental occurrence of tps from 6ppd ozonation.
rubber antioxidant 6PPD price antioxidant 4020,recently, roadway releases of N-(1,3-dimethyl-buty)-N'-phenyl-P-Phenylenediamine (ppd) antioxidants and their transformation products (tps) received significant attention due to the highly toxic 6ppd-quinone. however, the occurrence of ppds and tps in recycled tire rubber products remains uncharacterized.
- Does 6PPD ozonation pose environmental risks?
- 6PPD, a tire rubber antioxidant, poses substantial ecological risks because it can form a highly toxic quinone transformation product (TP), 6PPD-quinone (6PPDQ), during exposure to gas-phase ozone. Important data gaps exist regarding the structures, reaction mechanisms, and environmental occurrence of TPs from 6PPD ozonation.
- Are PPD antioxidants present in all samples dominated by 6PPD and dtpd?
- PPD antioxidants, PPDQs, and other TPs were present in all samples with chemical profiles dominated by 6PPD, DTPD, DPPD, and their corresponding PPDQs.
- Do rubber-derived Quinones form from PPD antioxidants?
- Herein, we developed and implemented a mass spectrometry-based platform combined with self-synthesized standards for the investigation of rubber-derived quinones formed from PPD antioxidants. Our results demonstrated that five quinones are ubiquitously present in urban runoff, roadside soils, and air particles.
- Is 6ppdq soluble?
- These measured physicochemical properties suggest that 6PPDQ is generally poorly soluble but fairly stable over short time periods in simple aqueous systems. 6PPDQ can also leach readily from TWPs for subsequent environmental transport, posing high potential for adverse effects in local aquatic environments.
