Why do sulfur free EPDM granules have no odor？

Traditional EPDM rubber granules often produce sulfuric acid due to the decomposition of sulfur components under high temperature or strong ultraviolet radiation, which releases a pungent odor and affects the user experience and environmental safety. And sulfur free EPDM granules completely abandon the sulfur vulcanization system, eliminating odor generation from the source. So why did sulfur free EPDM granules achieve "odorless, durable, and more environmentally friendly".

Q: Are sulfur free EPDM granules really completely odorless?   

Answer: Yes. Sulfur in traditional granules can generate volatile sulfides and produce distinct odors in hot oxygen or ultraviolet environments. Our sulfur free EPDM granules use non sulfur cross-linking technology and do not contain sulfur elements. Even if exposed to high temperatures or strong sunlight for a long time, they will not decompose into sulfuric acid or sulfur-containing gases, and the odor level can reach food grade odorless standards.

Q: Will sulfur free technology affect the elasticity and service life of granules?   

Answer: On the contrary. Sulfur free technology makes the molecular structure more stable, increases elasticity and tensile strength by 2-3 times (up to 4-7 megapascals), prolongs the service life by more than 3 times compared to traditional EPDM granules, increases performance retention by 5 times, and is less prone to hardening and cracking after long-term use.

Q: Will the color fade or darken quickly?   

Answer: No. Sulfur free EPDM granules have stronger antioxidant and UV resistance, brighter colors, and are not easily discolored. Even after years of outdoor use, they can still maintain good visual effects.

What core needs can the product address for users?

-Resolve odor complaints: Sensitive environments such as kindergartens, sports venues, and rooftop gardens no longer worry about rubber odor affecting user health or causing complaints.

-Resolve frequent renovation costs: increase lifespan by 3 times, improve performance retention by 5 times, and significantly reduce maintenance and replacement frequency.

-Solving the problem of color aging: anti discoloration, anti-oxidation, maintaining a bright appearance for a long time, and enhancing the overall texture of the venue.

-Addressing environmental compliance risks: meeting food grade hygiene standards and meeting the strictest environmental and safety requirements.

Core advantages and application value

1. Truly odorless, breakthrough in source technology

Traditional EPDM granules rely on sulfur vulcanization, where sulfur decomposes into sulfur-containing compounds under heat, oxygen, and ultraviolet radiation, producing a typical "rubber odor". Our sulfur free EPDM granules adopt an environmentally friendly non sulfur cross-linking system, which is sulfur free, odorless, and free of secondary pollution. They still have no odor even in high temperatures above 40 ℃ or continuous sun exposure environments.

2. Long lifespan and excellent mechanical performance

-The service life is increased by more than 3 times: the molecular structure is more stable, and the anti-aging ability is significantly enhanced.

-Elasticity and tensile strength reach 4-7 megapascals: 2-3 times higher than traditional products, providing better cushioning and rebound.

-Performance retention rate increased by 5 times: After long-term use, there is minimal change in elasticity, hardness, and color.

3. Vibrant colors and strong weather resistance

Sulfur free technology endows granules with lower packing density and stronger three-dimensional effect, resulting in purer colors. The antioxidant function prevents bright colors such as red, green, and blue from turning gray or dark even after years of outdoor use.

4. Environmental protection and safety, food grade standards

Free of sulfur, heavy metals, and polycyclic aromatic hydrocarbons, it can be tested through food grade contact materials and is suitable for high standard scenarios such as children's activity areas, pet parks, and drinking water areas.

5. Highly customized and flexible delivery

-Color: Pantone color code can be matched arbitrarily

-Particle size: 0.5-6mm, available in multiple specifications

-Minimum order quantity: from small-scale sampling to large-scale engineering orders

-Delivery time: 25 years of industry experience+fully automated production line, fast scheduling

Customer Application Case (Anonymous)

Case 1: A children's playground in the United States (Asia Pacific region)

Requirement: Indoor and outdoor children's activity area flooring materials must be absolutely odorless, brightly colored, wear-resistant, and UV resistant.   

Solution: Customized bright yellow and sky blue sulfur free EPDM granules with a particle size of 1-3mm, low packing density, and strong three-dimensional effect.   

Effect: After installation, there is no rubber smell on site or indoors after continuous high temperature above 35 ℃ and strong sunlight testing in summer; After 3 years of use, the color retention rate is greater than 95% and the elasticity attenuation is less than 5%. The customer has included it in the global new store standard material library.

Case 2: Plastic track in a sports park in a city in Australia

Requirement: Outdoor fitness trail for all ages, with a surface temperature of up to 60 ℃ in summer. It is required to be durable, non fading, and odorless.   

Solution: Use sulfur free EPDM granules mixed with polyurethane for on-site paving, with particle size of 2-4mm, customized deep red+gray.   

Effect: After 4 years of use, there is no cracking, no powdering, and no odor volatilization. The measured tensile strength still reaches 5.2 MPa, and the performance retention rate exceeds the initial value by 90%, far exceeding the traditional particle track laid at the same time (the latter has shown obvious aging and odor).

Case 3: Safety mats around German food processing plants

Requirement: Anti slip cushioning mats for the external loading and unloading area of the factory must pass the food contact level environmental certification to avoid odor transfer to the product.   

Solution: Provide food grade sulfur free EPDM granules, mixed in black and dark green, with a particle size of 3-5mm.

Effect: successfully passed the FDA and EU10/2011 migration test, without any odor absorption problem after 2 years of use, and the anti-aging performance meets the requirements of daily forklift rolling and high-temperature cleaning wastewater washing environment.

Why choose us?

-Over 25 years of industry experience: proficient in material science and application challenges.

-A complete set of advanced production lines: stable quality and high batch consistency.

-Sulfur free core technology patent: solves odor, lifespan, and color issues together.

-Flexible customization: Color, particle size, packaging, and minimum order quantity can be customized according to needs.

-Global customers: Our products are exported to Europe, America, Southeast Asia, and the Middle East, adapting to various climates.

Whether you need sample testing, project pricing, or customized exclusive colors and particle sizes, we can provide you with professional, fast, and environmentally friendly solutions. Welcome to contact our technical team for free samples and customized solutions - making your venue odorless, durable, and better from now on.

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.