SUSTAINABILITY
Breaking the import monopoly! Cardlo's next‑generation PETS high‑end plastic high‑temperature lubricant additive makes a powerful debut!
Release time:
2026-06-29 11:53
Source:
Major new product
PETS Pentaerythritol Stearate
Many manufacturers of modified plastics, masterbatches, pipes, and films invariably encounter several major challenges when producing high‑end grades: yellowing during high‑temperature processing, visible glass fiber protrusion and fiber floatation, fogging and haze in transparent parts, poor demolding in extrusion and injection molding, and internal bubbling or silver streaks in finished products. The key additive that addresses these issues is PETS—pentaerythritol stearate.
However, for a long time the high-end PETS market has been dominated by overseas industry giants. Now, JiaDeLe has iterated and upgraded its PETS-HTA, with test results that not only match but even surpass those of leading imported brands. Today, we’ll break down this high-performance lubricant additive in plain, easy-to-understand terms.
What is PETS?
PETS, short for pentaerythritol stearate, appears as a white, hard, high‑melting‑point waxy powder. It is soluble in hot ethanol, benzene, and other organic solvents, and serves as a versatile, high‑temperature‑resistant lubricant in plastic processing. Simply put, it performs four functions in one:
- Internal lubricant: After melting, it penetrates between the plastic molecular chains, reducing melt viscosity and enhancing flowability, thereby ensuring smoother filling of thin-wall and complex‑shaped parts.
- External release agent: Forms a barrier layer between the molded part and the mold surface, preventing sticking, tearing, and surface scratches, thereby improving the yield of finished products.
- High-temperature yellowing stabilizer: resists thermal decomposition, inhibits high-temperature degradation and discoloration of plastics, and addresses yellowing issues in transparent materials and engineering plastics.
- Powder dispersing additive: helps color pigments, calcium carbonate, glass fibers, and talc powder disperse uniformly, reducing streaks, white spots, and agglomeration defects.
Conventional PE waxes and stearic acid‑based lubricants typically have a maximum service temperature of around 300°C and tend to decompose and volatilize at higher temperatures. In contrast, PETS is a specialized, high‑end lubrication solution designed for demanding high‑temperature processing applications, such as PC, PBT, PPS, glass‑fiber‑reinforced nylons, and premium transparent products.
How do you choose among the four major PETS models from Jia De Le?
To meet diverse processing needs, JiaDeLe has developed four tiered PETS product lines, spanning from mid- to low-end general‑purpose applications to the high‑end market segment that demands exceptional heat resistance and superior yellowing resistance.
- PETS-HTA: Lowest hydroxyl value, highest melting point, highest tetraester content, and superior heat and yellowing resistance; primarily targeted at high‑temperature engineering plastics, transparent high‑end modifications, and replacing imported high‑end applications.
- PETS-UPA: A mid-range, high-performance grade that strikes a balance between cost-effectiveness and heat resistance; a mainstream, versatile model for standard compounding, PVC, and masterbatch applications.
- PETS-4: A versatile, cost-effective formulation suitable for filled and modified compounds, standard pipes, and conventional plastic lubrication.
- PETS-3: A low-melting-point entry-level grade, suitable for low-temperature extrusion, standard polyolefin products, and cost-effective formulation systems.
Hard‑core real-world testing: PETS‑HTA comprehensively outperforms leading imported competitors.
Many factories worry that domestic additives may not match the performance of imported ones. JiaDeLe has provided comprehensive benchmark test data, demonstrating clear superiority across key metrics, with four authoritative tests further validating its performance advantages.
Rheological Curve Testing:
For standard PETS, imported premium‑brand PETS, and JiaDeLe PETS‑HTA, the plasticization peak, plasticization duration, melt temperature, and equilibrium torque are essentially comparable. Moreover, JiaDeLe’s lubrication efficiency is fully on par with that of imported products, allowing for direct substitution at the same dosage without requiring substantial formulation adjustments.
DSC Thermal Analysis Testing:
When compared with two imported products, Jia De Le PETS-HTA exhibits superior peak counts and peak intensities, a significantly higher tetraester content, a leading proportion of active ingredients, and enhanced long‑lasting lubrication performance.
TGA Thermogravimetric Analysis:
PETS-HTA exhibits superior high-temperature thermogravimetric performance compared to imported competitors, with reduced decomposition under elevated temperatures—thermal loss at 368°C is less than 1%—and outstanding long-term thermal stability during high‑temperature processing.
290°C High-Temperature Yellowing-Resistant Baking Test:
The sample was subjected to continuous heating in a 290°C oven for 45 minutes. Visual comparison reveals that the yellowing of the JiaDeLe PETS-HTA on the left is significantly less pronounced than that of the imported sample, effectively addressing the persistent issue of yellowing in high‑temperature‑modified, transparent plastics.
PETS-HTA: Four Core Functions + Industry-Wide Application Scenarios
Internal and external lubricants (core applications):
Compatible with all processing methods, including extrusion and injection molding, it is the preferred additive for high‑temperature‑modified plastics such as PC, PC/ABS, PBT, PPS, and glass‑fiber‑reinforced nylon.
🔵 Resolves issues of exposed fiberglass, floating fibers, and surface roughness, significantly improving the first‑pass yield for new‑energy vehicle connectors, battery housings, and motor structural components.
🔵 Enhances melt flow, shortens injection molding cycle times, boosts shop-floor productivity, and ensures smooth demolding while reducing mold wear.
🔵 Compatible with color masterbatches and filler masterbatches, it enhances the uniform dispersion of carbon black, calcium carbonate, and talc, resulting in products with higher gloss.
PVC-specific heat stabilizer + plasticizer:
Used in PVC water supply and drainage pipes, plastic‑steel profiles, transparent rigid sheets, wire and cable insulation sheaths, and artificial leather:
🔵 Absorbs hydrogen chloride generated by PVC degradation, thereby delaying yellowing caused by high-temperature decomposition.
🔵 Balanced internal and external lubrication; no white frosting occurs even with long-term use; compatible with high-end transparent PVC packaging and pharmaceutical-grade rigid PVC sheets.
Rubber processing aids (plasticizing + lubricating):
In the rubber compounding, sealing strip, and gasket manufacturing processes, it reduces mixing resistance, enhances filler dispersion, improves demolding performance, and lowers energy consumption.
Antistatic and anti-fog additives:
It serves as an anti-fogging agent and a short‑acting antistatic additive in PE greenhouse mulch films, food‑packaging films, and PP and PS products, preventing condensation and water droplet formation on the inner surface of the film and ensuring optimal light transmission.
If your factory is producing high‑temperature‑modified engineering plastics, transparent PC products, glass‑fiber‑reinforced materials, premium PVC profiles, functional masterbatches, or optical films, and has long been plagued by issues such as yellowing, fiber floatation, bubbling, poor demolding, and uneven dispersion, consider trying JiaDeLe’s latest generation product, PETS‑HTA.
High purity, low hydroxyl value, exceptional high‑temperature resistance, yellowing resistance, minimal dosage, and outstanding cost‑effectiveness—this single additive addresses the vast majority of challenges in high‑temperature processing, truly offering a domestically produced alternative to premium lubricant additives and breaking the monopoly of overseas brands!
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