RF-9065: High-Performance Styrene/Acrylate Copolymer Emulsion for Flexible Waterproofing

In modern construction, waterproofing is more than simply preventing water from entering a building. A high-quality waterproofing coating must maintain strong adhesion, withstand environmental changes, remain flexible under low temperatures, and resist swelling and water-related degradation over time. To meet these increasingly demanding requirements, RF-9065 One-Component Flexible Waterproofing Emulsion provides a high-performance solution based on advanced styrene/acrylate copolymer technology.

RF-9065 is a styrene/acrylate copolymer emulsion specially designed for flexible waterproofing applications. With its excellent powder encapsulation, low water absorption, high thickening response, strong substrate adhesion, and outstanding water resistance, RF-9065 can be used as an important polymer component in the formulation of high-performance waterproof coatings.

Excellent Water Resistance for Long-Lasting Protection

Water exposure is one of the most important challenges faced by waterproofing materials. Continuous contact with water can cause coating swelling, whitening, loss of adhesion, and deterioration of mechanical properties. RF-9065 has been developed to provide excellent resistance against these problems.

One of its key advantages is its outstanding anti-swelling property under water immersion. This characteristic helps the waterproof film maintain its integrity when exposed to moisture for extended periods. In addition, RF-9065 demonstrates good water whitening resistance, helping the finished coating maintain a stable appearance and performance in humid environments.

The test results further demonstrate its waterproofing performance. In the reported water impermeability test at 0.3 MPa for 2 hours, the coating passed the test and was classified as impermeable.

Excellent Flexibility and Elasticity

Construction substrates are rarely completely static. Temperature fluctuations, substrate movement, and environmental changes can generate stress within waterproofing layers. Therefore, flexibility and elongation are critical properties for flexible waterproofing coatings.

RF-9065 provides good elasticity durability and strong film flexibility. The product has a minimum film-forming temperature below 0°C, supporting film formation under relatively low-temperature conditions.

According to the test data, RF-9065 achieved an elongation at break of 406% under untreated conditions, significantly exceeding the stated specification of ≥300%. After alkali treatment, elongation reached 520%, while acid treatment and heat treatment resulted in elongations of 385% and 340%, respectively. These results demonstrate the strong flexibility of the polymer film under different treatment conditions.

Strong Adhesion to Different Substrates

A waterproof coating is only effective when it remains firmly attached to the substrate. Poor adhesion can result in peeling, cracking, or premature waterproofing failure.

RF-9065 is designed with good adhesion to substrates, making it suitable for formulations where reliable bonding between the waterproof coating and construction substrate is required. The reported adhesion strength reached 1.48 MPa under standard conditions and 1.50 MPa on damp substrates, demonstrating strong adhesion performance even under moisture-related conditions.

High Thickening Response and Excellent Powder Encapsulation

Formulation efficiency is another important consideration for waterproof coating manufacturers. RF-9065 offers a high thickening response, which can help formulators achieve the desired rheological characteristics of the coating system.

The emulsion also provides excellent powder encapsulation and good pigment and filler loading capacity. This makes RF-9065 suitable for formulations containing substantial amounts of mineral fillers. The recommended formulation provided in the product introduction contains 45% RF-9065 and 43.5% 800-mesh ground calcium carbonate, together with dispersant, defoamer, ethylene glycol, thickener, water, and biocide.

This formulation approach allows manufacturers to develop a balanced waterproof coating system while taking advantage of the polymer's film-forming, adhesion, and water-resistance properties.

Reliable Performance Under Different Conditions

RF-9065 is designed to provide stable performance under a range of environmental and treatment conditions. Its reported tensile strength is 2.45 MPa in the untreated condition, increasing to 2.97 MPa after heat treatment. After alkali and acid treatment, tensile strength remained at 1.25 MPa and 1.36 MPa, respectively.

The product also demonstrates low-temperature flexibility. The testing data reports that the waterproof film passed the -15°C low-temperature bending test, indicating good flexibility under low-temperature conditions.

A Practical Polymer Solution for Waterproof Coating Formulators

For waterproof coating manufacturers looking for a polymer emulsion that combines flexibility, adhesion, water resistance, and formulation compatibility, RF-9065 offers a comprehensive solution.

Its key advantages include:

• High thickening response

• Excellent water whitening resistance

• Good elasticity durability

• Strong adhesion to substrates

• Excellent powder encapsulation

• Good pigment and filler loading capacity

• Excellent anti-swelling performance under water immersion

• Good weather and aging resistance

• Good low-temperature flexibility

• Excellent water impermeability performance

With a recommended construction dosage of approximately 1.5 kg of liquid material per square meter, RF-9065 can be considered for construction waterproofing coating systems where durability, flexibility, adhesion, and water resistance are essential.

RF-9065 is more than a polymer emulsion—it is a performance-oriented building block for modern flexible waterproofing formulations. By combining strong adhesion, high elasticity, water resistance, powder encapsulation, and low-temperature flexibility, it helps waterproof coating manufacturers develop durable solutions for demanding construction environments.