What problems can sulfur components in EPDM rubber granules bring

In the traditional production of EPDM rubber granules, although sulfur can achieve cross-linking as a vulcanizing agent, the residual sulfur element can cause a series of problems in long-term use. Especially in high temperature, strong ultraviolet or humid environments, sulfur components are prone to decompose and produce acidic substances, leading to material aging, discoloration, pungent odor, and even affecting human health. For application scenarios that pursue environmental protection, durability, and high safety, these defects have become industry challenges.

Our product solves your core problems

Our sulfur free EPDM rubber granules completely abandon the traditional sulfur vulcanization system and solve key problems such as odor, aging, and discoloration from the source. The product is not only odorless and more environmentally friendly, but also achieves a comprehensive leap in elasticity, tensile strength, weather resistance, and service life. It is widely used in scenarios such as kindergartens, sports fields, landscape trails, rooftop gardens, and swimming pool surroundings that require high safety and aesthetics.

Why is sulfur the 'invisible killer' of EPDM granules?

Traditional EPDM granules often use sulfur vulcanization systems, and their crosslinking reactions rely on sulfur atoms to form polysulfide bonds (- Sx -). However, this structure has obvious shortcomings under the influence of external environment:

Odor problem: Under high temperature or ultraviolet irradiation, polysulfide bonds are prone to break and release sulfur-containing volatile organic compounds (such as hydrogen sulfide, thiols, etc.), producing a pungent odor, especially in enclosed or high-temperature environments.

Accelerated aging: Sulfur bonds have poor chemical stability and are prone to oxidation and thermal degradation, leading to material hardening, cracking, and significantly shortened service life.

Color fading: Sulfur components undergo side reactions with pigments, especially under light, which can easily cause yellowing or fading, affecting aesthetics.

Environmental hazards: Some sulfur-containing accelerators may generate harmful substances such as N-nitrosamines, which do not meet the strict environmental standards for food grade or children's activity areas.

Sulfur free EPDM granules: redefining high-performance elastic flooring materials

We adopt advanced sulfur free crosslinking technology (such as peroxide or resin vulcanization system) to construct a more stable carbon carbon (C-C) crosslinking network, completely avoiding all problems caused by sulfur elements.

Core strengths

Truly Odorless: The sulfur free formula eliminates the release of sulfur-containing gases and has no odor even under high temperatures and direct sunlight in summer, making it particularly suitable for sensitive environments such as kindergartens and indoor venues.

Lifespan increased by more than 3 times: The molecular structure is highly stable, with excellent resistance to ultraviolet radiation and thermal oxidative aging, and the outdoor service life can reach more than 10 years.

Double improvement in elasticity and strength: The tensile strength reaches 4-7 MPa, and the elastic recovery rate is increased by 2-3 times, effectively absorbing impact energy and reducing the risk of sports injuries.

Durable and bright colors: Strong antioxidant capacity, combined with high fastness pigments, long-term use will not yellow or fade, maintaining visual beauty.

Environmentally friendly to food grade: free of heavy metals, phthalates, and N-nitrosamine precursors, certified by SGS, EN71-3, etc., can come into contact with children's skin and even food.

Low packing density, strong three-dimensional effect: The granules have distinct edges and corners, low packing density, and a full texture after paving, with excellent visual and tactile effects.

Customized services to meet diverse scenario needs

We understand that every project has unique requirements, so we provide comprehensive customization support:

Color customization: supports RAL, Pantone and other color card matching, can adjust any color, realize creative design such as pattern mosaic and logo embedding.

Particle size customization: We offer a variety of particle sizes ranging from 0.5-5mm to meet different thickness, anti slip level, and drainage performance requirements.

Flexible minimum order: Small batch orders can also be accepted, with quick sampling and delivery within 7-15 days.

Customer Application Cases

Case 1: Renovation of Outdoor Activity Area in a Kindergarten in the United States

Problem: The original EPDM flooring emits a pungent odor in summer, leading to continuous complaints from parents; Significant fading and powdering occurred within two years.

Solution: Use our customized red, yellow, and blue sulfur free EPDM granules (particle size 1-3mm) with a thickness of 15mm, combined with environmentally friendly polyurethane adhesive for construction.

Result: There is no odor after construction, and the colors are as bright as new; After three years of use, there are no cracks or fading, and the satisfaction rate of parents is 100%. It has become a demonstration project for the local "green campus".

Case 2: Fitness Trail in a High end Community in New Zealand

Problem: High salt spray and high humidity environments lead to rapid aging of traditional granules, resulting in sticky surfaces and loss of elasticity.

Solution: Grey sulfur free EPDM granules (particle size 2 – 4mm) with a thickness of 20mm are selected to strengthen the anti-aging formula.

Result: After five years, it still maintains good elasticity and anti slip performance, with no powdering or mold on the surface, and maintenance costs reduced by 70%.

Why choose us?

25 years of professional experience: Deeply involved in the research and production of EPDM granules, with leading technology and stable quality.

Complete advanced production line: fully automatic batching, precision granulation, strict quality inspection, ensuring consistency of each batch of products.

Global customer trust: Our products are exported to over 50 countries including Europe, America, the Middle East, and Southeast Asia.

One stop service: from scheme design, sample provision to construction guidance, full process technical support.

Whether it's the colorful kindergarten floor or the weather resistant municipal walkway, we can provide you with high-quality, sulfur free, and customizable EPDM rubber granules.

Welcome to contact us for samples and technical consultation, and embark on a new experience of green, safe, and long-lasting ground paving!

WOW(LYG) New Material Co Ltd is a manufacturer specializing in the production of EPDM rubber granules. We use sulfur-free vulcanization technology, it increases the service life by more than 3 times than traditional EPDM granules, and enhances the performance, including anti-aging, high-temperature resistance, and colorfastness.

We have over 25 years of production experience and offer customization for colors and particle sizes. NO MOQ.