The Corrugated Pipe Haven't Been Delivered Yet, But The Product Has Already Deteriorated in The Warehouse?

The Corrugated Pipe haven't been delivered yet, 

but the product has already deteriorated in the warehouse?

“Eng. Lau, the customer’s shipment of corrugated tubes is scheduled to be shipped next week, but some of the products have developed a white discoloration on the surface. What should we do?” 

“Eng. Lau, after General Manager Zhang received our shipment, he said the flame-retardant performance wasn’t as good as the samples and is asking us to provide a new test report!”

“Eng. Lau…”

Eng. Lau is the quality manager at an automotive parts supplier. In recent years, the company’s business has expanded, customer demand has continued to grow, and key clients have set increasingly high standards for product quality.

The issue of white residue forming on corrugated tubes while in storage is nothing new. In the past, when the problem was minor, customers felt it affected the product’s appearance; when the residue was more pronounced, the tubes would feel slightly sticky to the touch. In severe cases, it directly impacted the product’s performance, causing it to fail quality inspection. Over time, a layer of white powder would also accumulate inside the molds, disrupting production.

With intense competition across various industries, price and quality have become key concerns for many customers. How to improve the stability of product materials has become a major headache for Old Liu and the company.

What Is a Corrugated Pipe?

In modern industrial production, bellows serve as critical components for connecting various parts and are widely used in multiple fields, including the automotive, home appliance, and construction industries.

Challenges with Traditional Corrugated Pipe

In the traditional Corrugated Pipe manufacturing process, flame-retardant masterbatch is added to meet material flame-retardancy requirements. However, the flame retardants in traditional flame-retardant masterbatch tend to leach out in environments with fluctuating temperature and humidity, forming a white powder.

This phenomenon is particularly noticeable during warehouse storage, especially in humid seasons or environments with significant temperature fluctuations. This precipitated powder not only reduces the surface finish of the corrugated tubing and affects the product’s overall performance but may also corrode the mold surface, shortening mold life and increasing maintenance costs.

The root cause of this leaching is the incompatibility between the flame retardant and the base material. Traditional flame retardants have a significant difference in polarity compared to PE; their small molecules exist in a “supersaturated” state within the system, and as temperature and humidity rise, they gradually migrate to the surface.

Yinsu Flame Retardant: Two Different Approaches

To address common issues related to flame retardant leaching in corrugated tubing, silver-plastic flame retardants offer two different solution systems—each with its own advantages, allowing you to choose based on your needs.

Option 1: PE-XT-141 Reactive and Additive-Type Flame Retardant Masterbatch

PE-XT-141 is a new, highly effective reactive and additive-type flame retardant masterbatch in the form of white pellets. It is specifically designed to address the issue of poor compatibility between traditional flame retardants and PE.

Key Advantages:

• Resists migration and does not bloom. When melt-blended, PE-XT-141 forms a uniform and stable dispersion system, significantly improving the compatibility between the flame retardant and the PE matrix. It does not migrate or bloom even after long-term storage. It does not stick to molds or clog screens during processing.

• Self-extinguishing upon removal from the flame, with controllable addition levels. Adding just 10–20% to PE achieves self-extinguishing properties. For V0-rated corrugated pipes, the typical addition rate is around 20–30%, though this should be adjusted based on the raw material’s melt flow index.

• White masterbatch, compatible with any color. Its white pellet form makes it suitable for white flame-retardant products made from HDPE/LDPE without interfering with color matching.

• Wide range of process compatibility. Suitable for injection molding, filament drawing, extrusion, and blow molding. Applicable to corrugated pipes, electrical conduits, hollow panels, artificial turf, fire-resistant mesh, wires, and cables.

Applications: Corrugated pipes and tubular products that require white flame-retardant materials and have specific color requirements.

Option 2: FRP-950X Coated Red Phosphorus Masterbatch + A Small Amount of Filler-Type Flame Retardant

FRP-950X is a high-content microcapsule-coated red phosphorus flame retardant masterbatch that, when used in combination with a small amount of filler-type flame retardant, forms a red phosphorus-inorganic synergistic flame retardant system.

Key Advantages:

• Extremely low loading rate. Due to the high concentration of microcapsule-coated red phosphorus, an addition of approximately 10% in PE corrugated tubing is sufficient to meet the V-0 (2.0 mm) flame retardancy standard. This is significantly lower than the loading rates required by traditional flame retardant solutions and has minimal impact on the physical properties of the substrate.

• Synergistic Enhancement. When FRP-950X is used in combination with aluminum hydroxide, red phosphorus captures free radicals in the gas phase, while aluminum hydroxide absorbs heat and cools the material in the condensed phase, forming a protective layer. The synergy between the two significantly boosts flame retardancy efficiency.

• Low-Smoke, Halogen-Free. Environmentally friendly and halogen-free, compliant with RoHS requirements. Produces low smoke output and low-toxicity smoke during combustion.

• Resistance to Leaching. Microencapsulation technology seals red phosphorus within a protective layer, preventing the leaching of phosphine and phosphoric acid, effectively addressing the leaching issues common in traditional red phosphorus systems.

Applications: Corrugated tubing and pipe products requiring low-smoke and halogen-free properties, particularly for orders destined for the EU and other regions with strict environmental regulations.

Product Comparison Overview