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Bicyclic Cage Phosphate Ester Pepa | Carbonization Agent for Epoxy Resin, PP, EVA Materials
1. Product Core Identity: Bicyclic Cage Phosphate Ester (Pepa), a high-performance carbonization agent specifically developed for flame retardant applications in polymer materials.
2. Applicable Materials: Widely compatible with epoxy resin systems, PP (Polypropylene) materials, and EVA (Ethylene-Vinyl Acetate) materials, suitable for various polymer processing scenarios.
3. Flame Retardant Synergy: Works perfectly with other nitrogen-phosphorus flame retardants, forming a synergistic flame retardant system to enhance overall flame retardant efficiency.
4. Key Performance Advantage: Exhibits excellent char-forming properties, which can effectively form a dense carbon layer during combustion to isolate heat and oxygen, thereby achieving efficient flame retardancy.
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Description
| Place of Origin | China |
| Brand Name | Huacheng |
| Payment Terms | T/T, L/C, PayPal, Western Union, Cash |
Basic Properties
Bicyclic cage phosphate ester is an important intermediate compound, with the full name 1-oxo-4-hydroxymethyl-2,6,7-troxia-1-phosphabicyclo(2.2.2) octane, abbreviated as PEPA. Its molecule has a highly symmetrical rigid structure and integrates carbon source, acid source, and gas source, making it a single-component intumescent flame retardant. Additionally, PEPA has a relatively reactive hydroxyl group at its end, allowing it to undergo esterification reactions with various acids and acyl chlorides.
Applications
PEPA exhibits excellent flame retardancy in epoxy resin systems; when 8.2% is added, the LOI increases from 23% to 33%. It also shows good flame retardant effects in PP and EVA materials.
When combined with other nitrogen-phosphorus flame retardants, bicyclic cage phosphate ester flame retardants demonstrate excellent char-forming properties, effectively isolating heat and oxygen. This results in a temperature drop of 60℃ in the intumescent coating, a 65℃ improvement in thermal stability, and a 58% reduction in maximum smoke density.
Downstream Products
Due to the presence of an active hydroxyl group, PEPA can be used to derive a series of flame retardant product lines. Three products we are interested in developing are: (1-oxo-4-methylene-2,6,7-trioxa-1-phophabicyclo(2.2.2)octane) phosphate bis-melamine salt, tris (1-oxo-1-phospha-2,6,7-trioxabicyclo(2.2.2) octane-4-methylene) phosphate, tris (2,6,7-trioxa-1-phophabicyclo (2.2.2) octane-1-oxo-4-hydroxymethyl) phenylsilane.
Applications
Epoxy resin systems,PP and EVA materials,combined with other nitrogen-phosphorus flame retardants, bicyclic cage phosphate ester flame retardants demonstrate excellent char-forming properties, effectively isolating heat and oxygen
Specifications
| Test Item | Specification | |
| Appearance | White solid powder | |
| Particle Size | μm | 5-25 |
| Phosphorus Content | % | 16.50-18.00 |
| Acid Value | MgKOH/g | ≤0.80 |
| Specific Gravity | g/cm³ | 1.50-1.60 |
