BCHPC Burning Rate Reduction via Desensitizing Agents
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Solution Overview
Problem
Di-(4-tert-butylcyclohexyl)-peroxydicarbonate (BCHPC) has a high burning rate, classified as Hazard Class 1, posing safety challenges in storage and handling due to its explosive properties, and existing methods do not effectively reduce this burning rate while maintaining its functionality as an initiator in chemical reactions.
Innovation Solution
Mixing BCHPC with desensitizing agents such as dicyclohexyl phthalate, fluorene, aluminium trihydroxide, polystyrene, or organic peroxides like dilauroyl peroxide, dicetyl peroxydicarbonate, and dimyristyl peroxydicarbonate to reduce the burning rate, maintaining the initiator's functionality in chemical reactions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If BCHPC is used as an initiator for curing unsaturated polyester resins, then the initiator activity is high, but the burning rate is high resulting in Hazard Class 1 classification
Solution Approach 1:
Desensitizing agents such as dicyclohexyl phthalate, fluorene, aluminium trihydroxide, polystyrene, and organic peroxides are introduced as intermediary substances that reduce the burning rate of BCHPC. These agents act as mediators between BCHPC and the environment, lowering the hazard classification from Class 1 to Class 2 or 3 while preserving the initiator's chemical functionality in curing reactions
Solution Approach 2:
The patent creates composite material systems by combining BCHPC with desensitizing agents in specific ratios (25:75 to 75:25 wt.%). This composite approach allows the mixture to exhibit reduced burning characteristics while maintaining the necessary initiator activity, effectively resolving the contradiction between high productivity and low harmful factors
2Object-affected harmful factors
If desensitizing agents are added to reduce burning rate, then safety is improved, but the initiator functionality may be compromised
Solution Approach 1:
The patent optimizes the concentration parameters of desensitizing agents in the mixture with BCHPC. By carefully controlling the weight ratios (preferred ranges: 25:75 to 75:25 wt.%), the system achieves parameter changes that reduce burning rate while maintaining sufficient initiator functionality for effective curing of unsaturated polyester resins
Data Source
AI summary
The invention relates to the reduction of the burning rate of di-(4-tert-butylcyclohexyl)-peroxydicarbonate (BCHPC) by adding desensitizers as well as to the use of BCHPC preparations having a reduced burning rate as an initiator in chemical reactions.