Vspray-3 Polyurethane Spray Blend Polyols with 245fa Blowing Agent 100-200 mpa.s Viscosity for Thermal Insulation

Price Negotiable

Price: Negotiable

MOQ: 1000 kg

Delivery Time: Peak Season Lead Time: within 15 workdays, Off Season Lead Time: within 15 workdays

Product Description

Product Overview

Vspray-3 is a specialized polyurethane spray blend polyol formulation that utilizes 245fa as the blowing agent instead of HCFC-141B. When reacted with isocyanate, it produces high-performance foam with exceptional thermal insulation properties and dimensional stability.

Key Performance Features

Fine and uniform cellular structure
Low thermal conductivity for superior insulation
Excellent flame resistance properties
Outstanding low temperature dimensional stability

Application Areas

Ideal for various thermal insulation applications using spray technology, including cold storage rooms, industrial pots, and large-scale pipeline insulation systems.

Physical Properties

Property	Value
Appearance	Pale yellow to brown viscous liquid
Hydroxyl Value (mgKOH/g)	200-300
Dynamic Viscosity at 25°C (mpa.s)	100-200
Specific Gravity at 20°C (g/ml)	1.12-1.20
Storage Temperature (°C)	10-25
Storage Stability (months)	6

Recommended Mixing Ratio

Component	Parts by Weight (pbw)
Vspray-3 Blend Polyols	100
Isocyanate	100-105

Reactivity Characteristics

(Measured at system temperature of 20°C, values may vary depending on processing conditions)

Parameter	Value
Cream Time (seconds)	3-5
Gel Time (seconds)	6-10

Foam Performance Specifications

Property	Test Method	Value
Spray Density	GB 6343	30-40 kg/m³
Closed-cell Rate	GB 10799	≥90%
Initial Thermal Conductivity at 15°C	GB 3399	≤24 mW/(m·K)
Compressive Strength	GB/T 8813	≥150 kPa
Adhesive Strength	GB/T 16777	≥120 kPa
Elongation at Break	GB/T 9641	≥10%
Dimensional Stability 24h at -20°C	GB/T 8811	≤1%
Dimensional Stability 24h at 70°C	GB/T 8811	≤1.5%
Water Absorption	GB 8810	≤3%
Oxygen Index	GB 8624	≥26