The Temperature Modifier Revolutionizing Asphalt Performance

  In road engineering, temperature sensitivity is asphalt’s greatest challenge. At Qingdao Sainuo, we’ve harnessed Polyethylene Wax (PE WAX) 

to reengineer asphalt’s response to thermal stress through three scientific mechanisms:

Ⅰ. Phase-Change Regulation: The Thermal Buffer Effect

  PE WAX’s semi-crystalline structure (melting point: 100–120°C) creates a dynamic thermal buffer:

• High-Temperature Guard: During summer (60–80°C pavement), unmelted wax crystals form reinforcing networks, increasing viscosity by 30–50% to resist rutting.

• Low-Temperature Flexibility: Below 0°C, wax domains plasticize the matrix, reducing glass transition temperature (Tg) by 5–8°C to prevent cracking.

Key Theory: Wax crystallization alters asphalt’s viscoelastic spectrum, broadening its service temperature window.

Ⅱ. Micro-Engineering the Colloidal Structure

  Asphalt’s performance hinges on asphaltene dispersion. PE WAX acts as a colloidal stabilizer:

• Disperses asphaltene aggregates via steric hindrance (wax layer thickness: 10–50 nm)

• Reduces interfacial tension between saturates/aromatics by 20–30%

• Forms co-crystalline domains with paraffin fractions to inhibit wax segregation

Ⅲ. Rheological Synergy with Polymers

  When combined with SBS/SEBS modifiers, PE WAX enables:

• Accelerated Crosslinking: Wax droplets dissolve SBS domains, reducing mixing time by 25–40%

• Shear-Thinning Control: Lowers complex viscosity (η*) at 135°C by 35–60% for easier paving

• Storage Stability: Density matching (0.92–0.96 g/cm³) prevents modifier separation

"Why Sainuo’s Specialty PE WAX?"

  Our engineered grades offer:

• Controlled molecular weight (2,000–5,000 g/mol) for targeted crystallization kinetics

• Oxidation-tailored compatibility (acid number: <5 mg KOH/g)

• Low volatile content (<0.5%) to resist aging

Technical Insight:
  PE WAX modifies asphalt through reversible physical interactions, unlike chemical modifiers. Its ethylene chains entangle 

with asphalt molecules (entanglement MW: ~2,500 g/mol), while crystalline regions provide structural reinforcement. This dual mechanism preserves recyclability.

For more details, please consult us!                              inquiry

Qingdao Sainuo Group. We are manufacturer for PE wax, PP wax, OPE wax, EVA wax, PEMA,EBS,Zinc/Calcium Stearate…. Our products have passed the REACH, ROHS, PAHS, FDA testing.

Sainuo rest assured wax, welcome your inquiry!

E-mail：sales@qdsainuo.com

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Adress：Biulding No 15,Torch Garden Zhaoshang Wanggu, Torch Road No. 88,Chengyang,Qingdao,China