Why silicone rubber add curing agent after mixing a lot of bubbles?

This is normal physical phenomena. The liquid will produce a large number of bubbles in the mixing time, so, it must pass through the vacuum exhaust bubble treatment.

Food Grade Silicon RTV-2 Platinum Based Liquid Rubber for Mold Making

Name: Food Grade Silicon RTV-2 Platinum Based Liquid Rubber for Mold Making
Brand: GUANGZHOU OTT NEW MATERIALS CO., LTD.
SKU: 1978379695

Guangdong, ChinaGUANGZHOU OTT NEW MATERIALS CO., LTD.

US$7.88-9.56

200 kg

Sample price:US$9.56/kg.Request sample

Product profile

Customization

Available

Material

Organic Silicone

Application

Industrial, DIY Art

Model NO.

OTT-J820

Certification

ISO, FDA, MSDS

Hardness

20 Shore a

Mix Ratio

1:1/10:1

Color

Translucent

Shelf Life

12-18 Months

Business

Factory Direct Sale

Sample

Available

Trade Term

EXW/CNF/CIF/Fob/DDU

Shipment

by Sea, by Air

MOQ

1kg

Lead Time

7 Days After Payment

Payment

100% Tt in Advance

Pot Life

20-40min

Curing Time

3-5hrs

Shrinkage

0.1

Elongation

Transport Package

Plywood Pallet

Specification

20kg, 25kg, 200kg

Trademark

OTT

Origin

Guangzhou

HS Code

3910000000

Production Capacity

600000

Key features

Food Grade Certification: ISO, FDA, and MSDS certified for safe use in food mold applications.

Room Temperature Curing: Cures at room temperature with a pot life of 20-40 minutes and 3-5 hours curing time.

High Tear Strength: Features 24 KN/m tear strength and 5.2 MPa tensile strength for durable molds.

Low Shrinkage Rate: Achieves 0.1% shrinkage for precise replication of original molds.

Customized Labeling: Offers customized labels and various package sizes for DIY service.

24-Hour Support: Professional sales team provides 24-hour full-time service and technical support.

Factory Direct Sale: Direct factory sales with monthly production capacity reaching 200 tons.

OEM/ODM Services: Provides OEM and ODM services for customized silicone solutions.

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: ≤9.33h 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's silicone products you are making?

liquid silicone, silicone rubber, silicone oil; Due to different silicone molds, our silicone has different viscosity, and cause different hardness, density to meet the requests from client.

Q:Do you offer free sample to client?

Yes, we can provide the sample for test.

Q:How about the quality control in your factory?

We have professional QC team to control the quality during production. Goods will be 100% inspected before shipment.

Q:How to remove the bubbles during my mould making?

After mixing liquid silicone with curing agent, please put the material into vacuum machine to take off the bubbles.

Q:How to get good silicone mould to use longer time?

The best way is: #A, Please choose the right liquid silicone according to your products. #B, Don't use any silicone oil in mold making, because it can make the silicone mould become too soft to use. #C, Silicone mould can be used longer after the whole silicone mould fully cured, so it's better to wait 2 hours after mould finished.