Rotomolding Automotive & Industrial Components — OEM-Grade Fuel-Resistant Solutions

⛽ Rotomolding Automotive & Industrial Components

Automotive fuel tanks, tractor and engineering machinery fuel tanks, floor-scrubber housings, cleaning equipment enclosures, chemical turnover drums — fuel resistance, chemical resistance, long-term outdoor weathering and impact resistance — Tiangang provides OEM-grade formulation support for automotive and industrial parts.

1. Operating Conditions of Automotive and Industrial Parts

Fuel / oil contact: fuel tanks are in long-term contact with gasoline, diesel and lubricating oil, requiring resistance to oil extraction
Impact resistance: vehicle collisions and drops of floor scrubbers require high toughness and impact resistance
High and low temperature: temperature cycling from -40℃ to +85℃ near the engine compartment
Long-term outdoor exposure: roofs, roof luggage racks and floor-scrubber housings are used outdoors
Anti-static: fuel tanks require a surface resistance below 10⁹ Ω to prevent static build-up (optional)
OEM standards: weathering standards of OEMs such as Volkswagen, Toyota, SAIC and Weichai
Multi-layer co-extrusion: high-toughness HDPE + barrier layer + tie layer, requiring coordinated stability of every layer

2. Tiangang Recommended Solutions

Solution A: Automotive fuel tanks (HDPE, single layer or multi-layer co-extrusion) — Tiangang Top Pick

Component	Model	Recommended Dosage	Function
Light stabilizer package dedicated to automotive modification	T-70 / T-81	1.0%	White to pale yellow granules, concentration 50%±2.5%, carrier MFI > 10 g/10min; can be pre-mixed with the resin and fed directly, meeting OEM weathering standards
Multi-layer co-extrusion outer-layer solution	HS-625 + UV-360	0.25% + 0.15%	HS-625 has won several provincial, ministerial and industry science and technology progress awards; its polymeric structure is not extracted by gasoline or diesel, giving long-term weathering

The key point in automotive applications: a fuel tank is in long-term contact with fuel, and monomeric HALS is extracted and loses effectiveness — this is exactly the reason the polymeric HS-625 and the automotive-specific additive packages T-70 / T-81 exist. Classic single-molecule HALS may already show obvious migration marks and weathering decay after 3~5 years in a gasoline medium.

Solution B: Tractor / engineering machinery fuel tanks (weathering + impact + high UV)

Component	Model	Recommended Dosage	Function
Automotive-specific additive package	T-78 / T-70	1.0%	Granular, pre-mixed form; synergy of light stabilization and antioxidation, dual protection during processing and in service
Weathering upgrade	HS-625	0.25%	High-molecular-weight polymeric structure, low volatility and low migration, long-lasting extraction resistance, good resin compatibility
Impact-resistance formulation consultation	AO-427	0.10%	Inhibits thermo-oxidative degradation during processing and improves molecular-weight retention after low-temperature impact

Solution C: Floor scrubber / cleaning equipment housings (light shade + anti-static + flame retardant)

Component	Model	Recommended Dosage	Function
Low acid-interaction HALS	HS-330	0.25~0.35%	High-molecular-weight Me-HALS, avoiding neutralization reactions with acidic components such as the antistatic agent in the housing
General one-pack (alternative)	HS-362	0.30%	Light stabilization + antioxidation + processing stability solved in one package
Flame retardancy (added when required)	FR-810A	8~12%	Polymeric NOR halogen-free flame retardancy, low migration and low extraction, suitable for housings used outdoors for long periods
Improved pigment dispersion	AO-427	0.15%	Color-difference control for light-shade housings

Solution D: Chemical turnover drums / industrial storage tanks (acid, alkali and salt resistance)

Component	Model	Recommended Dosage	Function
Acid-resistant one-pack	T-68	0.40%	Dedicated to acid and other harsh environments, ready to use straight from the bag with zero trial-blending cost
Upgrade: strongly corrosive media	XT-8 + HS-625	0.25% + 0.20%	N-OR does not react with acidic substances; sulfur resistance 3000~7000 ppm, chlorine resistance ≤ 850 ppm

Solution E: UV-resistant functional masterbatch (ready to use for small and medium plants)

Model	Active Ingredient	Recommended Dosage	Application
TGUVFQ2001PE	HALS compounded UV-resistant system	3~5%	Dedicated to thick-wall articles — automotive housings and fuel tank walls are far thicker than film
MB0607-1	Active HALS 15% + active antioxidant 5%	2~4%	General-purpose for PE substrates, dust-free feeding, uniform dispersion
MB6250PP20 / MB6251PP20	UV-resistant functional masterbatch	2~4%	PP substrates: automotive housings / outdoor parts

Masterbatch conversion: target addition level ÷ active ingredient concentration of the masterbatch = masterbatch dosage. Example: target HALS 0.3%, using MB0607-1 (15%) gives 2.0%. The Tiangang technical center can convert it directly from the customer's formulation.

3. Reference: Automotive OEM Standards

OEM	Standard	Key Requirements
Volkswagen VW	PV 3929 / PV 3930	Xenon lamp ageing 2000–4000 h, color difference ΔE ≤ 3, 60° gloss ≥ 80%
Toyota TOYOTA	TSM 7600G	QUV plus xenon lamp dual standard, low-temperature impact -40℃
SAIC	SMTC 5 400 005	SAE J1960 xenon lamp 2500 h, mechanical property retention ≥ 80%
Weichai / Yuchai	Corporate standards	Weathering + impact + chemical medium resistance

📂 Other rotomolding scenarios

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Need an OEM-grade formulation for automotive fuel tanks or industrial components?

Tiangang has complete test-support capability for SAE J1960, PV 3929 and other OEM standards, and can help you through the certification process of a specific OEM.

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Technical reviewTiangang Technical CenterVersion2026-11-07

Specifications and application notes on this page are compiled from Tiangang's published technical data. Actual values are governed by the COA shipped with each lot and the technical agreement confirmed by both parties.

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National High-Tech Enterprise
Vice Chairman Unit, China Plastics Processing Industry Association (CPPIA)
Vice Chairman Unit, Agricultural Plastics Branch, China Agricultural Plastics Application Technology Society
Member, Ageing Methods Subcommittee, National Technical Committee on Plastics (SAC/TC15/CS5)
Member, Society of the Plastics Industry (SPI), USA

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