In the production of silicone keypads, seals, and high-end silicone products, yellowing is a core issue that affects both aesthetic quality and service life. The High Anti-Yellowing Compression Molded Silicone IOTA HTV 311 series, launched by IOTA SILICONE OIL ANHUI CO.,LTD. (hereinafter referred to as "IOTA"), has become the material of choice for numerous silicone product manufacturers. Thanks to its excellent anti-yellowing performance and high transparency, it helps clients elevate their product quality and market competitiveness.
IOTA HTV 311 is a compression molded silicone rubber developed by IOTA specifically for silicone products with high anti-yellowing requirements. It has passed ROHS, REACH, and FDA testing certifications. The main technical parameters are as follows:
| Product Model | IOTA-HTV 31130 | IOTA-HTV 31140 | IOTA-HTV 31150 | IOTA-HTV 31160 |
|---|---|---|---|---|
| Hardness (Shore A) | 30 | 40 | 50 | 60 |
| Density (g/cm³) | 1.10 | 1.12 | 1.16 | 1.19 |
| Tensile Strength (MPa) | 7 | 8.5 | 8.5 | 8.5 |
| Elongation (%) | 700 | 550 | 450 | 400 |
| Tear Strength (KN/m) | 15 | 19 | 20 | 19 |
| Appearance | Translucent | Translucent | Translucent | Translucent |
Curing Condition: 1.0% peroxide (2,4-dichlorobenzoyl peroxide), compression cured at 175℃ for 5 minutes, tested on 2mm thick samples [1].
1. Silicone Keypads and Seals
Suitable for high-end keypads, O-rings, and sealing parts with high anti-yellowing requirements. The products resist yellowing over long-term use, maintaining their aesthetic quality.
2. Kitchenware and Baby Products
Passed FDA testing, making it safe for producing food-contact items such as silicone kitchenware, pacifiers, and baby products. It is safe and non-toxic.
3. Medical and Hygiene Products
Compliant with ROHS and REACH regulations, making it suitable for medical and hygiene products, laboratory consumables, and other fields with strict material safety requirements [2].
4. Swimming and Sports Equipment
Suitable for structurally complex products like swimming goggles, diving gear, and sports protective equipment, offering both strength and weather resistance.
Compared with traditional compression molded silicone, the core advantages of IOTA HTV 311 include:
When stored unopened at or below 50℃, the product has a shelf life of 18 months from the date of production. If the shelf life is exceeded, it must undergo comprehensive performance testing and be confirmed compliant before continued use.
Packaging: 20KG/carton [3].
With the rising demand for the aesthetic quality of silicone products in consumer electronics, healthcare, and baby care industries, the market demand for high anti-yellowing and high-transparency compression molded silicone continues to grow. IOTA continuously optimizes its product formulas to provide clients with more stable material solutions.
IOTA's technical support team offers full-process services ranging from material selection and process optimization to failure analysis, supporting sample testing and validation.
Product Inquiry: zyf@siliconeoil.cn
References:
[1] IOTA SILICONE OIL ANHUI CO.,LTD. Product Datasheet for High Anti-Yellowing Compression Molded Silicone. 2026.
[2] China Rubber Industry Association. Testing Methods and Application Guide for Yellowing Resistance of Silicone Products. 2025.
[3] CRI (China Research and Intelligence). 2025-2031 Global Silicone Rubber Market Development Trend Report. 2025.
Disclaimer: The product performance data mentioned in this article are typical values. For specific specifications, please refer to IOTA's official technical documents. Actual application effects may vary due to process conditions, usage environments, and other factors. It is recommended to conduct sample testing and validation before use.
