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ZELEC® UN
ZELEC® UN is a highly acidic phosphate ester. It is used as a release agent in polyester resin molding operations that require heat.
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- Manufacturer: Stepan Specialty
- Product Line: ZELEC® and MERPOL® Alcohol Phosphates & Alcohol Ethoxylates
- Product: ZELEC® Acid Alcohol Phosphate
- Industries: Coatings | Elastomers | Metal Processing & Fabrication | Plastics
- Authorized Countries: Canada | Mexico | United States
Fulfilled By ChemPoint
Fulfilled By ChemPoint
Manufacturer
Product
Industries
Authorized Countries
Canada
Mexico
United States
Overview
ZELEC® Acid Alcohol Phosphates are effective internal release agents for polyester molding operations and can be utilized as antistatic agents for coatings and plastics.
ZELEC® UN is effective as release agent in externally heat cured molding such as pultrusion, matched metal die, compression molding, sheet molding, and bulk molding.
ZELEC® UN has shown to be especially useful in pultrusion where it can reduce pull force, improve resin wet out, and maintain part integrity. ZELEC® UN can also be used as an antistatic agent if neutralized with KOH or an amine.
Specifications
% Active: 100
Acid value: 270
Boiling Point: 100ºC
Cloud Point: -3ºC
Density: 0.98 g/ml
Flash Point, PMCC: >94°C
Form @ 25°C: Liquid
Freeze Point: -5°C
pH, 5% in 1: 1 IPA/H2O: 2.5
Pour Point: -1°C
Specific Gravity @ 25°C: 0.98
Viscosity, cps @ 25°C: 165
Primary Chemistry:
Acidic Alcohol Phosphate
Features & Benefits
- Improves release of polyester resins
- Eliminates labor cost associated with external release agent
- Protects ferrous metals from corrosion
- Reduces pulling force in pultrusion
- Improves surface appearance of molded parts
- Promotes adhesion on finishes, inks, and adhesives to the molded part
- Shows no adverse effects on cure of polyester resins
Problems Solved
Difficulties removing molded polyester parts from the mold.
Delays in production and increased costs associated with external mold releases.
Damage to pultrusion equipment and pultruded material caused by pulling forces.
Corrosion of ferrous metals.
Surface defects on molded polyester parts.
Applications
Internal release agent for composite manufacturing
Antistatic agent for coatings and plastics
Processing aid for pultrusion
Related Applications
Coatings
Related Chemistries
Plastics
Related End Markets
Elastomers
Metal Processing & Fabrication
Plastics
Related Functions
Coatings
Elastomers
Plastics
Related Processes
Elastomers
Plastics
FAQs
How does ZELEC® UN help reduce pulling force during pultrusion?
ZELEC® UN functions as an internal release agent in polyester resin systems, reducing friction between the cured composite and processing equipment. In pultrusion, this internal lubrication helps lower pulling force, which can reduce stress on equipment, improve process stability, and help maintain part integrity during continuous production.
Which composite manufacturing processes is ZELEC® UN best suited for?
ZELEC® UN is effective in externally heat-cured composite molding processes, including pultrusion, matched metal die molding, compression molding, sheet molding compound (SMC), and bulk molding compound (BMC) applications.
What is the primary chemistry of ZELEC® UN?
ZELEC® UN is an acidic alcohol phosphate chemistry, classified as an acid alcohol phosphate ester.
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