About Solar Panel Adhesive | JCT Machinery

Common Solar Panel Adhesive Types

Solar Panel Adhesive Performance Requirements

• Excellent high and low temperature resistance (-40℃ to +85℃)
• Excellent aging and UV resistance (≥20 years lifespan)
• Excellent bonding strength and flexibility
• Long-term resistance to yellowing, cracking and peeling
• Excellent electrical insulation properties (especially for junction box adhesive)
• Environmentally friendly and non-toxic (REACH, ROHS) compliance

Solar Panel Adhesive Production Process Challenges

1. High viscosity: Adhesives such as RTV silicone sealant, and modified epoxy adhesive typically have viscosities ranging from 100,000 to 3,000,000cps, making them difficult to mix evenly with conventional blenders.
2. High filler content and difficulty dispersing: Inorganic fillers such as alumina, silica, thermal conductive powder, and flame retardants are often added to solar adhesives, which are prone to agglomeration and require vigorous shearing and dispersion.
3. Complete degassing is requried: Adhesives used for sealing junction boxes, acksheets, and frames must be completely free of bubbles, otherwise they will affect waterproofing, insulation, and bonding performance.
4. Mixed uniformly and withour dead spots: Inhomogeneous mixing can easily lead to unstable product performance and shortened product lifespan.

Why choose double planetary mixer to produce solar panel adhesive?

1. Revolution and rotation planetary mixing mechanism

Repeatedly stirs materials for comprehensive mixing without dead spots.

2. High torque and high shear capacity

Double planetary mixer can handle high-viscosity and high-filler systems with high mixing efficiency.

3. Vacuum-sealed chamber design

Enables simultaneous vacuum degassing during mixing, eliminating microbubbles and improving the sealing performance of the adhesive.

4. Multiple impeller configurations (folding blade, twisted impeller)

Optimizes mixing for different colloid properties.

5. Heating/cooling jacket

Controls material temperature to prevent overheating and solidification.

6. Available in all stainless steel or corrosion-resistant materials

Compatible with acidic or silicone-containing systems, extending equipment life.