Why does silicone rubber produce many bubbles after adding curing agent?

This is a normal physical phenomenon. The liquid produces a large number of bubbles during mixing, so it must undergo vacuum exhaust bubble treatment.

Mold Liquid RTV2 Silicone Rubber for Grc/Gfrc, Grg, Fireplaces Silicon

Name: Mold Liquid RTV2 Silicone Rubber for Grc/Gfrc, Grg, Fireplaces Silicon
Brand: GUANGZHOU OTT NEW MATERIALS CO., LTD.
SKU: 1977163625

Guangdong, ChinaGUANGZHOU OTT NEW MATERIALS CO., LTD.

US$3.55-9.88

1 kg

Sample price:US$8.00/kg.Request sample

Product profile

Customization

Available

Material

Organic Silicone

Application

Medical, Industrial, Agricultural

Model NO.

OTT-J8 Series/ OTT-S8 Series

Certification

ISO, FDA

Mixing Ratio

100:3, 100:2, 10:1, 1:1

Color

Adjustable

Shelf Life

18 Months

Shipping Term

by Sea, by Air

Transport Package

1kg, 5kg, 20kg, 25kg, 200kg Drum

Specification

Liquid Silicone

Trademark

OTT

Origin

China

HS Code

3910000000

Production Capacity

8000kg/Day

Key features

Adjustable Color Options: Color is adjustable to meet specific customer requirements.

Wide Application Range: Suitable for GRC/GFRC, GRG, fireplaces, jewelry casting, and rapid prototyping.

High Performance Materials: Resistant to deformation, heat, acid, alkali, and expansion with fine detail reproduction.

Multiple Hardness Grades: Available in Shore A hardness ranging from 5 to 50 for various molding needs.

Long Shelf Life: 18 months shelf life when stored in cool, dry places in original unopened packages.

OEM and ODM Services: Professional manufacturer offering customized OEM and ODM silicone solutions.

Fast Delivery Time: Delivery within 4-6 days after payment confirmation.

Free Sample Availability: Free samples provided for client testing and evaluation.

Company profile

GUANGZHOU OTT NEW MATERIALS CO., LTD.

Guangdong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service AvailableExport Year: 2022-07-27 CertifiedNearest Port: Shenzhen Port, Guangzhou PortAverage Response Time: ≤7.53h CertifiedTerms of Payment: LC, T/T, PayPal, etc.

AI-Powered supplier vetting

SummaryGuangzhou OTT New Materials Co., Ltd. is a China-based limited company established in 2014, operating in silicone and related chemical materials. It reports five production lines, a 1,700 m² manufacturing plant, broad product coverage, exports representing 90% of total sales, and stated peak- and off-peak-season fulfillment within 15 working days. The supplier holds ISO 9001:2015 certification and describes technical support, after-sales service, and silicone-material innovation capabilities. However, the available information indicates a relatively small organization of 17 employees, fewer than five quality-control staff, and limited documented customer-trade evidence. Financial strength, customization performance, and the depth of customer cases cannot be conclusively assessed from the provided data.

Supplier typeThe supplier is identified as Guangzhou OTT New Materials Co., Ltd., a China-based limited company operating in chemicals and silicone materials. Its listed products include architectural-restoration silicone and mold-making silicone, while its broader product keywords cover multiple liquid, RTV, cured, and specialty silicone products.

CertificationsThe supplier reports holding an ISO 9001:2015 certificate, providing explicit evidence of a certified quality-management system. No other certifications are stated in the provided information.

After-Sales capabilityThe supplier states that three doctoral senior researchers and 12 professional engineers support quality improvement, product development, innovation, and after-sales service. It also explicitly claims to provide technical solutions, after-sales service, and ongoing technical support, although no service-performance metrics or response-time data are provided.

R&D capabilityThe supplier explicitly reports top technology in condensation and addition-cured silicone in China and identifies doctoral researchers and professional engineers supporting new-product development and innovation. Its stated range of related silicone materials further supports technical breadth, though no independently verified innovation results are provided.

Production capacityThe supplier reports five production lines, a 1,700 m² manufacturing plant, and order fulfillment within 15 working days in both peak and off-peak seasons. Its product scope is broad and export sales are stated to represent 90% of total sales, but the small total workforce of 17 employees and fewer than five quality-control staff indicate that operational scale should be verified for large-volume requirements.

Product Q&A

Q:What silicone products do you make?

We produce liquid silicone, silicone rubber, and silicone oil. Different viscosities, hardness, and densities are available to meet client requests via different silicone molds.

Q:Do you offer free samples?

Yes, we can provide samples for testing purposes.

Q:How is quality controlled in your factory?

We have a professional QC team controlling quality during production. All goods are 100% inspected before shipment.

Q:How to remove bubbles during mold making?

After mixing the liquid silicone with the curing agent, put the material into a vacuum machine to remove the bubbles.

Q:How to get a good silicone mold for longer use?

First, choose the right liquid silicone for your product. Second, do not use silicone oil as it makes the mold too soft. Third, wait 2 hours after the mold is finished to ensure it is fully cured.