contenu:
Technical Advances in Soy Wax Blends for Longer Burn Times
Formulation Engineering: From Base Soy to Optimized Blends
Base composition and performance metrics
Modern soy-based formulations move beyond single-ingredient soy wax flakes into engineered soy wax blends that combine hydrogenation and co-waxes to raise structure and improve performance. Typical high-performance blends use 60–80% hydrogenated soybean oil combined with 20–40% co-waxes such as coconut wax blends or proprietary vegetable wax modifiers. Measured melt point ranges for these blends are between 48°C and 56°C (118°F–133°F), with a bulk density of 0.88–0.94 g/cm³. Lab burn tests show an average burn rate of 7–9 g/hr for a 50 mm diameter container using recommended wick sizing, compared with 9–12 g/hr for conventional single-origin soy, translating to a burn time increase of ~20–35%.
Additives, fragrance compatibility, and specifications
Optimized blends are formulated to be paraffin-free and to accept higher fragrance load—typically 8–12% by weight; some proprietary systems support up to 14% with no frosting. Recommended pour temperature is 60–70°C with a curing time of 48–72 hours to stabilize the melt pool and scent throw. For pillar applications, formulations increase structural hardening by 10–15% through controlled hydrogenation and low-melting co-waxes.
Application Guidance and Professional Tips
Production and wick selection best practices
For container candles, start testing with ECO wicks in sizes tuned for your vessel: for a 65 mm diameter container, try ECO 8–10; for 80–90 mm, move to ECO 12–14. Monitor the first burn until the melt pool reaches the edge; an optimum pool depth is 8–12 mm after 2–3 hours. To minimize tunneling and optimize candle performance, maintain a pour temperature of 60–66°C and allow at least 48-hour cure. Use 8-hour controlled burn cycles during R&D to log burn time, soot production, and fragrance dispersion.
Blending ratios and sustainability considerations
Practical blend examples: 70% soy + 30% coconut for balanced hardness and scent throw; 80% soy + 10% coconut + 10% proprietary hardener for improved pillar integrity. Emphasize renewable feedstocks and traceability; choosing certified supply chains reduces variability and supports consistent candle performance. Soy Wax Source provides technical datasheets with precise melt point curves, trial protocols, and recommended wick charts to accelerate product development.
Professional tips: always perform at least three replicate 8-hour burn tests per SKU, record burn rate (g/hr), measure melt pool diameter and depth at 2-hour intervals, and verify fragrance retention after accelerated aging at 40°C for 7 days. Advantages of working with Soy Wax Source include custom small-batch blending, lab-grade QC, detailed datasheets, and on-demand technical support to optimize formulations for both scent load and longevity.
date: November 14, 2025
lien: https://www.candlescience.com
sous-categorie: cire de soja
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