Polyurethane Resin Material
- CCMT
- CHANGCHUN,CHINA
- Based on the order quantity
- 500,000 meters per month
1. A Shore hardness of 90±5 provides mechanical protection as well as elasticity that make it easy to use in cable joints subject to temperature changes and mechanical stress.
2. With a volume resistivity >1.0×10¹³ Ω·cm, dielectric strength >20 kV/mm, and water absorption <0.2%, it provides both electrical insulation and moisture protection.
3. Because the resin is easy to flow and its gel time ranges from 15 to 25 minutes, it is quite simple to fill cable joints and intricate electrical structures with it.
Long-Term Material Matching Between the Potting Material and the Cable Structure Is a Risk That Can Easily Be Ignored.
After the cable joint is potted, the polyurethane resin will come into direct contact with the cable sheath, connector and other components for a long time. If the cured material is too stiff or has insufficient compatibility with different substrates, stress may continue to occur at the material interface under long-term temperature changes and mechanical vibration, which will affect the long-term reliability of the potting structure.
Our cable joining resins have Shore-A 90±5 hardness, water absorption of <0.2%, good adhesion properties to metallic and non-metallic substrates, and a working temperature range of-40 ° C to 130°C. After curing, the material can form a protective layer with certain elasticity, which not only provides mechanical protection and electrical insulation, but also better adapts to temperature changes and mechanical stresses that may occur during cable operation.
Product Parameters:
| Parameter | Test Conditions | Cable Jointing Resins |
| Appearance | Visual Inspection | Brown Liquid / Black Viscous Liquid |
| Dynamic Viscosity | 25 °C | 100–250 / 500–900 mPa·s |
| Density | 25 °C | 1.2 ± 0.05 / 1.00 ± 0.05 g/ml |
| Mixing Ratio | By Weight | 45:100 |
| Gel Time | 25 °C | 15–25 min |
| Curing Conditions | — | 25 °C / 10 h |
| Hardness | Shore A, 25 °C | 90 ± 5 |
| Water Absorption | 24 h, 25 °C | <0.2% |
| Volume Resistivity | 25 °C | >1.0 × 1013 Ω·cm |
| Dielectric Strength | 25 °C | >20 kV/mm |
| Operating Temperature Range | — | -40 °C to 130 °C, Class B |
| Shelf Life | Sealed at Room Temperature | 6 Months |
Note: During actual purchase, further confirmation can be made based on specific product specifications and application requirements.
Product Advantages:
· Material adaptability more suitable for cable structure:
This electrical insulating resin has a hardness of Shore-A 90±5 after curing, providing mechanical protection while retaining a certain degree of elasticity. For structures such as cable joints with different material combinations and thermal expansion and cold contraction, interface adaptation problems caused by excessively rigid materials can be reduced.
· Taking into account insulation performance and environmental adaptability:
Our resin cable joints have a volume resistivity of>1.0×1013 Ω·cm, a breakdown strength of>20 kV/mm, and a water absorption of less than 0.2%. Low viscosity and good flowability combined with these characteristics, the material is suitable for potting and filling of cable connection areas, and can form insulation and protective layers after curing.
Product Application:
Based on the parameters and performance of the above products, our polyurethane two part resin can be used in the following scenarios:
·Cable joint potting
Used for potting the cable connection area to fill and protect the surroundings of conductors, connectors and joint components.
·Protection of electrical connections
Suitable for electrical connection structures that require insulation and environmental protection, providing potting protection for internal components.
·Electronic and industrial electrical equipment
Such properties make it an excellent material to protect different kinds of electronic parts, industrial control instruments and other electrical stuff, even against moisture, vibrations and changes in temperature which are common in most of the working environments.
About Us:
More than 40 years of experience in manufacturing cable accessories and insulation materials.
CCMT was established in 1986. We have more than 40 years of experience in the production of cable accessories and electrical insulation materials. The company's factory covers an area of more than 10,000 square meters, has more than 200 employees and more than 40 production equipment, forming a production system covering extrusion, molding, injection molding and expansion processes.
For different cable accessories and insulation materials, the company is equipped with multiple production lines, and has a monthly production capacity of million-meter related products (the production capacity of specific products will vary according to material types and product specifications).
Technology research and development and quality assurance.
CCMT and Changchun Institute of Applied Chemistry, China Academy of Sciences carry out technical support and product research and development cooperation, and continue to carry out technical development in the field of cable materials and insulation products. It has passed ISO 9001:2015 quality management system certification, and related products also have CE, SGS and other certifications and testing qualifications, and comply with RoHS, REACH and other relevant requirements.
During the product production process, we control product performance through internal quality testing and third-party testing, providing overseas buyers with relatively complete quality assurance basis.
International customers and export markets.
We have cooperated with internationally renowned companies such as Raychem, 3M, ABB, and Shell, and our products cover multiple product fields such as heat shrinkable materials, insulation materials, and potting materials. At present, more than 10 categories of products have been exported to dozens of countries and regions, serving customers in the fields of power, cable accessories, electrical equipment and related industrial fields.
Pre-sales technical support and after-sales service.
Before purchasing, we can provide product specifications, technical data, product pictures and videos based on customers 'application needs to help buyers initially determine whether the materials are suitable for the target application.
For customers with special application needs, our company can also provide OEM and customized services to conduct further technical communication based on cable structure, use environment and project requirements.
After the order is confirmed, we provide support in terms of production progress and shipment, and can arrange trade methods such as FOB, CFR, CIF, and DDP, as well as transportation plans such as sea, land, air and express delivery according to customer needs.
Experience in power project application.
We have participated in power infrastructure projects such as Tianwan Nuclear Power Station, Taishan Nuclear Power Station, and Guangdong Ling 'ao Nuclear Power Station, and have accumulated experience in supplying relevant cable insulation and protection products in high-demand power applications.
Exhibition and industry exchanges:
We continue to showcase products such as cable accessories, heat shrinkable materials and polyurethane potting materials through exhibitions to directly understand the actual needs of different markets for cable insulation, joint protection, material adaptation and long-term operation reliability.
Through on-site product displays, technical exchanges and project needs communication, we have also reached cooperation with many customers to lay the foundation for subsequent industry and product development.
FAQ:
1. Is this polyurethane resin suitable for use in cable joints where moisture is present?
Consider it. The material has a water absorption rate of <0.2%, and has high volume resistivity and dielectric strength. However, for long-term flooding, high humidity or special outdoor environments, material adaptation confirmation should still be carried out based on the specific cable structure and actual working conditions.
2. How to determine whether polyurethane resins can adequately fill complex cable joint structures?
Focus on two parameters: viscosity and gel time.
The dynamic viscosity of the material at 25°C is 100 - 250 / 500 - 900 mPa-s, and the gel time is 15 - 25 minutes. Therefore, in the actual potting process, it is necessary to evaluate its flow and filling effect in combination with the joint structure, pouring method and operating environment.
