Fast Cure Tin Cured Liquid Silicone Rubber for Casting Plaster

Professional Liquid Silicone Manufacturing Experts
Shenzhen Jianghe New Materials Technology Co., Ltd. is a leading developer and manufacturer of high-performance polymer materials, including epoxy resin, PU resin, UV resin, and liquid silicone rubber. As an integrated source factory combining R&D, production, and sales, we operate a 20,000㎡ modern production base in Dongguan, certified with ISO9001 and other international standards. Supported by advanced equipment, a dedicated R&D team, and a strict QC system, we deliver over 25,000 tons of stable, high-quality, and cost-effective products annually to clients in over 100 countries. We specialize in customized formulations and OEM/ODM services, empowering industries from crafts and furniture to electronics and composites with reliable material solutions.

Why Choose This Tin Cured Liquid Silicone?

1. Fast Curing for Enhanced Production Efficiency

• Rapid Room-Temperature Curing: Fully cures in just 4–5 hours at room temperature, eliminating the need for heating equipment and significantly shortening mold production cycles.
• Flexible Pot Life: Offers 30–50 minutes of working time, allowing for detailed adjustments and complex pouring, while curing quickly to keep production on schedule.
• Ideal for Batch Production: Fast curing makes it suitable for industries requiring quick mold turnover, such as architectural decoration and sculpture casting.

2. Excellent Flowability for Perfect Detail Replication

• Superior Self-Leveling: Viscosity ranges from 1300 to 27000 mPa.s, allowing selection based on mold complexity to easily capture fine textures.
• Low Bubbling, Easy Pouring: Good flowability promotes natural air release during pouring, reducing manual degassing and minimizing bubble defects.
• Suitable for Intricate Designs: Capable of replicating fine details such as floral patterns on Roman columns, facial features on sculptures, and textured architectural elements.

3. High Durability for Extended Mold Life

• High Tear Strength: Tear strength ranges from 16 to 26 kN/m, ensuring molds resist damage during repeated demolding.
• Reusable for 800–1000 Cycles: Can be reused nearly a thousand times for materials like plaster, reducing per-use costs.
• Excellent Aging Resistance: Resists weathering, heat, acids, and alkalis, maintaining integrity even in outdoor or humid environments.

4. Low Shrinkage for Dimensional Stability & Precision

• Linear Shrinkage ≤0.3%: Minimal shrinkage after curing ensures dimensional accuracy and consistency between mold and original model.
• Ideal for Precision Casting: Suitable for applications requiring high dimensional accuracy, such as sculptures, character models, and architectural components.

5. Cost-Effective & Practical for Industrial Use

• Competitive Pricing: More affordable than platinum-cured silicone, offering better cost efficiency for mold making.
• Designed for Non-Food Industrial Applications: Ideal for architectural, sculpture, and craft molds where food contact certification is not required.
• Mild Odor During Curing: May emit slight odor during curing; recommended for use in well-ventilated areas. Odor dissipates after full curing.

Detailed Technical Specifications

How to Use
1.Precise Weighing: Use a digital scale to accurately weigh components at a strict A : B = 100 : 2 (or 100:3) ratio by weight. Component B (curing agent) is used in very small amounts—accuracy is crucial for successful curing.
2.Initial Mixing: Add Component B to Component A. Mix with a stirrer at low speed, clockwise for 3-5 minutes until the color is completely uniform. Scrape the walls and bottom of the container to avoid unmixed spots.
3.Vacuum Degassing: Pour the mixed silicone into a container placed inside a vacuum degassing chamber. Turn on the vacuum pump and maintain a vacuum of -0.1 MPa for 2-3 minutes, until bubbling stops and the silicone surface settles flat. This is the core step to eliminate bubbles and ensure mold quality.
4.Pouring into Mold: After degassing, promptly and in one go, pour the silicone slowly from the container edge into the prepared master mold. Utilize its good flowability to self-level and fill every detail.
5.Curing: Allow to cure completely at room temperature (25°C) for 4-5 hours before demolding. Avoid vibration or movement. To accelerate, apply mild heat (40-50°C) to reduce time to 2-3 hours.

Precautions for Mold Silicone:
1. Adjust the amount of curing agent based on temperature—reduce it in high temperatures. Excessive curing agent will cause the mold to harden and become brittle; insufficient curing agent will prolong the working time.
2. To prevent changes in mold silicone properties, it is recommended not to add silicone oil.
3. For optimal mold performance, allow the mold to cure for at least 24 hours before use.
4. The curing speed of this product is closely related to ambient temperature. Higher temperatures accelerate curing. Users may adjust the amount of hardener based on ambient temperature to achieve the desired curing speed.

Shelf Life:
Unopened packaging at room temperature (25°C): 12 months. Finished silicone molds can be stored for up to six months without loss of performance.

Storage and Transportation:
1.Mold silicone should be stored at room temperature in a dry, sealed container. Avoid contact with water to prevent deterioration.
2.This product is classified as non-hazardous for transportation.

Applications & Project Gallery

1. Architectural Decorative Mold Fabrication

Tin cured liquid silicone rubber is ideal for architectural decoration molds, especially for cornices, Roman columns, railings, ceilings, fireplace surrounds, and exterior wall decorations. Its excellent flowability and fast curing allow precise replication of texture details on stone, plaster, or cement surfaces, significantly improving production efficiency.

2. Sculpture and Artwork Casting Molds

Whether for Buddha statues, figurative sculptures, reliefs, or contemporary art installations, tin cured silicone offers high-fidelity, durable mold solutions. Its low shrinkage rate (≤0.3%) preserves fine details and is suitable for casting with plaster, resin, fiberglass, and more.

3. Artificial Stone and GRC Component Molds

Tin cured silicone is widely used for molds in artificial stone and GRC (Glassfiber Reinforced Cement) components. Its alkali and weather resistance makes it suitable for long-term outdoor or humid environments. Molds can be reused up to 800–1000 cycles, offering cost efficiency.

4. Craft and Gift Item Molds

Ideal for candles, handmade soap, resin crafts, Christmas decorations, stationery gifts, and other small-batch or multi-variety production. Tin cured silicone cures quickly and demolds easily, suitable for artisans and small studios.

5. Furniture and Decorative Component Molds

European-style furniture ornaments, door/window trim, planters, fountain decorations, and more can be efficiently produced with tin cured silicone molds. Their high tear strength ensures structural integrity even after multiple uses.

OEM Customization Service
1.Customized formulation: Viscosity, flowability, curing time, hardness, transparency, color, and various functional additives. Can be adjusted according to needs to meet different industry application scenarios.
2.Packaging Customization: Multiple packaging sizes are available to suit your production scale, including 1kg, 5kg, 20kg, 25kg, and 200kg drums. All packaging follows international shipping standards to ensure safety and durability.
3.Private Label: Supports brand customization, including bottle label design, outer packaging printing, and logo labeling, helping brand owners and wholesalers quickly build their own brands and enter the market.
4.Supplies and Kits: Pre-mixed kits (such as resin + pigment + mold + tools, etc.) are provided according to your end product.
5.Color Matching and Functional Additives: Offers color matching services, supporting adjustments for black, red, yellow, and other colors.
6.Sample support: We support sample orders for performance testing before mass production. This ensures compatibility with your process, equipment, and application requirements.
7.Technical consultation and process guidance: Engineers provide one-on-one technical guidance on construction suggestions, curing conditions, mixing ratios, application processes, etc., to help you solve practical problems.

Why Choose Our Customization Services?

1.Fast Response — Initial Technical Proposal Within 72 Hours
Once we receive your requirements, our engineering team will provide an initial formulation direction or technical recommendation within 72 hours. This significantly shortens your R&D cycle and speeds up time-to-market.

2. Cost Advantage — 15–30% Lower Than Trading Companies
As a factory with no middlemen, we offer highly competitive OEM pricing while maintaining strict quality standards. Ideal for distributors, factories, and brand owners seeking stable and scalable supply.

3. Confidentiality Guaranteed — 100% NDA Support, Formulations Never Disclosed
Every custom project can be secured with an NDA. We protect your formulations, data, and intellectual property with strict confidentiality standards and never share them with third parties.

4. End-to-End Control: One-Stop Service from Raw Materials to Delivery
Full in-house control over formulation, production, filling, private labeling, packaging, and logistics ensures consistent quality and stable supply.

5. 17+ Years of Material Manufacturing Expertise
With deep expertise in epoxy resin, PU resin, UV resin, liquid silicone rubber, and gypsum powder, we understand the performance needs of various industries including electronics, crafts, automotive, LED, molds, and flooring.

6.Technical Core: In-House R&D Center and Engineering Team
Experienced application engineers provide one-on-one support in formulation tuning, process optimization, and troubleshooting to ensure optimal performance.

7. Stable Quality — ISO9001 Certified Production
We follow strict quality control standards under ISO9001:2015. Every batch is traceable, stable, and tested to meet your specifications.

8. Fast Sampling & Flexible MOQ
We support rapid sample production and low-MOQ orders, reducing risks for new product launches, distributors, and factory procurement.

9. Brand Empowerment: Complete Private Label and Packaging Customization
Full white-label services including label design, multi-size packaging, and brand logo printing to help you build a professional brand image with ease.

10.Global Delivery: Scalable Production and International Logistics Network
Own large-scale production facilities paired with a mature global logistics network ensure stable output and on-time delivery worldwide.

If You Need Customized Packaging Or Other Specifications, Please Contact Us.

FAQ:

Q1: How to Choose Between Tin-Cured Silicone and Platinum-Cured Silicone?
A: ① Choose Tin-Cured Silicone: Suitable for construction, sculpture, large-scale plaster molds, and cost-sensitive projects.

② Choose Platinum-Cured Silicone: Suitable for high-precision replication, food-grade applications, high-temperature resistance requirements, and premium molds requiring zero shrinkage.

Q2: How Many Cycles Can a Tin Cured Silicone Mold be Used?

A: Under normal use and maintenance, Tin Cured Silicone molds can last 800–1000 cycles (e.g., for plaster products). Lifespan is influenced by:

• Gentle demolding practices.

• Avoidance of strong acids, alkalis, or solvents.

• Storage conditions (dry, away from light).

• Complexity of mold geometry.

Q3: Is Tin Cured Silicone Food Safe?

A: Tin Cured Silicone is generally not recommended for direct food contact molds due to potential by-product release during curing. For food-grade applications (chocolate, candy, baking molds), we recommend our Platinum Cured Food Grade Silicone, which is FDA compliant and non-toxic.

Q4: Do You Support Small Orders or Sample Testing?

A: Yes, we accept small orders starting from 1kg and provide free samples (shipping cost applies). Samples can be used to test flowability, cure time, demolding, etc. Custom formula samples are also available upon request.