ASTM E1090 Standard Test Method For Dicumyl Peroxide And Dicumyl Peroxide Decomposition Products In Resins
This test technique of ASTM E1090 may be used to determine dicumyl peroxide, dimethyl benzyl alcohol, and acetophenone and ethylene vinyl acetate (EVA) resins.
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- Overview
- Scope, Applications, and Benefits
- Test Process
- Specifications
- Instrumentation
- Results and Deliverables
Overview
ASTM E1090 is a standardized test method used to measure the concentration of dicumyl peroxide and its decomposition products, dimethyl benzyl alcohol and acetophenone, in polyethylene (PE) and ethylene vinyl acetate (EVA) resins.
This technique is critical for measuring peroxide content in uncured and cured polymers. In uncured polymers, dicumyl peroxide is present at a concentration of up to 2%, while in cured polymers, the residual content is below 0.1%.
Scope, Applications, and Benefits
Scope
ASTM E1090 applies to:
- Polyethylene (PE) resins
- Ethylene vinyl acetate (EVA) resins
- Determination of:
- Dicumyl peroxide
- Dimethyl benzyl alcohol
- Acetophenone
It evaluates residual peroxide and its breakdown products in both uncured and cured polymer systems.
Applications
- Quality control of polymer processing
- Monitoring crosslinking efficiency
- Evaluation of cured polymer products
- Electrical insulation materials
- Cable and wire manufacturing
- Packaging materials
- Automotive polymer components
- Research and development of polymer formulations
Benefits
- Ensures controlled crosslinking of polymers
- Detects residual peroxide levels
- Assesses decomposition by-products
- Supports process optimization
- Enhances product safety and performance
- Provides standardized chemical analysis
- Improves consistency in manufacturing
Test Process
Sample Preparation & Extraction
Polymer is powdered and extracted using methylene chloride.
1Solvent Exchange
The extract is transferred into methanol for analysis.
2HPLC Analysis
Dicumyl peroxide, dimethyl benzyl alcohol, and acetophenone are analyzed.
3Data Interpretation
Concentrations are calculated using calibration standards.
4Technical Specifications
| Parameter | Details |
|---|---|
| Applicable Materials | PE and EVA resins |
| Solvents Used | Methylene chloride, methanol |
| Typical Peroxide Level (Uncured) | 1–2% |
| Typical Residual Level (Cured) | < 0.1% |
| Measured Compounds | Dicumyl peroxide, dimethyl benzyl alcohol, acetophenone |
| Output Units | Concentration (%) or mg/kg |
Instrumentation Used for Testing
- High-performance liquid chromatography (HPLC) system
- UV or an appropriate detector
- Analytical balance
- Sample extraction apparatus
- Solvent filtration system
- Data analysis software
Results and Deliverables
- Quantitative peroxide concentration
- Breakdown product levels
- Crosslinking efficiency assessment
- Comparative analysis reports
- Quality control documentation
Frequently Asked Questions
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