High-Strength Tin-Cured LSR for Architectural Molds – Durable & Cost-Effective

Optimized Technical Introduction for Industrial Grade

Tin-Cure Liquid Silicone Rubber (LSR)

Superior Material for Architectural Mold Making

RTV-2 tin-cured liquid silicone rubber (LSR) delivers exceptional performance in producing high-durability molds for concrete, plaster, and silicone-based architectural components. Engineered for precision and resilience, it is the optimal choice for fabricating decorative elements such as patterned wall tiles, ornate Roman columns, and intricate relief panels

Key Properties of Tin-Cured LSR
1. Ultra-Low Shrinkage (<0.2%)
- Ensures dimensional stability and accurate replication of fine surface textures (e.g., stone grain, floral motifs) without post-curing deformation.
- Critical for large-scale modular molds requiring seamless assembly.

2. Enhanced Tear Resistance & Thermal Stability
- Withstands 200°C processing temperatures, making it compatible with hot-cured concrete and gypsum.
- Robust mechanical properties reduce mold damage during demolding, extending service life by 30–50% compared to conventional rubbers.

3. Chemical Inertness in Harsh Environments
- Resists alkalis (pH 12+), acids, and moisture—ideal for outdoor applications or chemically aggressive substrates like Portland cement.
- Prevents degradation from mold-release agents or cleaning solvents.

4. Cost-Efficiency for Mass Production
- 40–60% lower material cost than platinum-cure LSR, with comparable detail fidelity for non-medical applications.
- Room-temperature curing reduces energy consumption in manufacturing.

Applications in Architectural Mold Making
- Prefabricated Architectural Elements: Reusable molds for GFRC facades, cultural heritage restoration.
- Landscape Hardscaping: High-cycle production of pavers, balustrades, and faux-stone veneers.
- DIY/Artisan Use: User-friendly for small-batch artisan crafts with minimal equipment.

Shenzhen Hanast New Polymer Materials Co., Ltd. was founded in 2010 and focuses on the development of new silicone materials. It is a national high-tech enterprise integrating the development, production, sales and service of silicone products. With an operation area of 16000 ㎡, our company has become one of the few professional service providers in the industry, which can provide one-stop customized silicone gel adhesive solutions thanks to independent research, development and production. Our company has obtained a number of national invention and utility model patents, the title of "Guangdong Famous High tech Products", the honorary title of "National Specialization, Specialization, Innovation" and "Little Giant" from the Ministry of Industry and Information Technology of the People's Republic of China.

In 2019, Shenzhen Hanast New Polymer Materials Co., Ltd. was established to expand the overseas market of adhesives, and the "Hanast" brand was registered. A foreign trade sales team with more than ten employees was established. Today, our products are sold to Southeast Asia, Russia, the Middle East and other countries, and strategic supply relationships have been established with many large electronics companies in Southeast Asia.

The company has a large number of highly qualified scientific researchers and technicians with more than 10 years of practical experience, which are highly appreciated by customers. At present, we cooperate with many well-known brand companies such as ABB, China Aerospace, Emerson, China Southern Power Grid, Huicheng, Foxconn, Wall, Meizu, ZTE, BYD, etc. In addition, the company is also the designated service provider of high temperature resistant adhesive for China's Shenzhou 10 spacecraft and the designated silica gel adhesive manufacturer for China's 332 military factory and Beijing satellite manufacturer. The products comply with ROHS standards and have SGS, FDA and LFGB certification, Chinese environmental labeling and other product certifications.