Teflon lined stainless steel autoclave is a specialized high-pressure reactor widely used for hydrothermal synthesis, solvothermal reactions, and crystal growth. It features a stainless-steel outer shell that provides mechanical strength and heat resistance, and a PTFE (Teflon) inner liner that ensures chemical inertness and corrosion protection. This design allows researchers to safely conduct reactions under elevated temperatures and pressures without contamination.

---

Structure and Design

The autoclave is composed of two main parts:

• Outer Shell: Made from 304 or 316 stainless steel, offering excellent pressure resistance and thermal stability up to 300°C.
• Inner Liner: The Teflon (PTFE) liner provides a non-reactive environment, isolating the sample from the metal chamber. This ensures high purity and prevents unwanted catalytic effects during reactions.

Some models also include safety sealing gaskets, threaded locking mechanisms, and pressure release valves for extra protection.

---

Working Principle

During operation, the sample and solvent are sealed inside the Teflon liner, which is then enclosed in the stainless-steel body. When placed in an oven or furnace, the temperature rise causes internal pressure to build up. The hydrothermal environment promotes the crystallization of inorganic compounds, nanomaterials, or other advanced materials that cannot form under normal atmospheric conditions.

---

Key Features of Teflon Lined Autoclave

• Corrosion Resistant: Teflon liner resists strong acids, alkalis, and organic solvents.
• High-Temperature & Pressure Tolerance: Operates safely at 220–280°C and up to 3 MPa.
• Leak-Proof Seal: Stainless steel body with precision threads ensures safe, airtight operation.
• High Purity Environment: PTFE prevents contamination, ensuring accurate experimental results.
• Easy to Clean and Maintain: Non-stick inner surface simplifies cleaning.

---

Applications in Research and Industry

The Teflon lined stainless steel autoclave is widely used in:

• Hydrothermal synthesis of nanomaterials (e.g., ZnO, TiO₂, Fe₃O₄)
• Solvothermal reactions in organic chemistry
• Crystallization of rare earth materials and ceramics
• Catalyst and composite material preparation
• Geochemical and mineral studies

Its versatility makes it essential for research laboratories, universities, and chemical manufacturing facilities.

---

Operation Instructions

1. Load the sample and solution into the PTFE liner.
2. Tighten the stainless-steel cap securely.
3. Place the autoclave in an oven and heat to the target temperature.
4. Allow the unit to cool naturally before opening.
5. Clean the liner after each use to maintain purity.

---

Advantages of Using a Teflon Lined Stainless Steel Autoclave

• Long service life and minimal maintenance.
• Suitable for various laboratory sizes (25 mL – 500 mL).
• Safe, stable, and efficient operation.
• Ideal for repeatable, controlled hydrothermal reactions.

---

Teflon lined stainless steel autoclave Technical parameters

Model	Volume(mL)	pressure(MPa)	temperature(℃)	Lining material(PTFE)
YHHW-5PTFE	5	3	220	polytetrafluoroethylene
YHHW-10PTFE	10	3	220	polytetrafluoroethylene
YHHW-15PTFE	15	3	220	polytetrafluoroethylene
YHHW-25PTFE	25	3	220	polytetrafluoroethylene
YHHW-50PTFE	50	3	220	polytetrafluoroethylene
YHHW-100PTFE	100	3	220	polytetrafluoroethylene
YHHW-150PTFE	150	3	220	polytetrafluoroethylene
YHHW-200PTFE	200	3	220	polytetrafluoroethylene
YHHW-250PTFE	250	3	220	polytetrafluoroethylene
YHHW-300PTFE	300	3	220	polytetrafluoroethylene
YHHW-400PTFE	400	3	220	polytetrafluoroethylene
YHHW-500PTFE	500	3	220	polytetrafluoroethylene
YHHW-1000PTFE	1000	3	220	polytetrafluoroethylene
YHHW-1500PTFE	1500	3	220	polytetrafluoroethylene
YHHW-2000PTFE	2000	3	220	polytetrafluoroethylene
YHHW-2500PTFE	2500	3	220	polytetrafluoroethylene
YHHW-3000PTFE	3000	3	220	polytetrafluoroethylene

Model	Volume(mL)	pressure(MPa)	temperature(℃)	Lining material(PPL)
YHHB-5PPL	5	3	300	Para-polyphenylene
YHHB-10PPL	10	3	300	Para-polyphenylene
YHHB-15PPL	15	3	300	Para-polyphenylene
YHHB-25PPL	25	3	300	Para-polyphenylene
YHHB-50PPL	50	3	300	Para-polyphenylene
YHHB-100PPL	100	3	300	Para-polyphenylene
YHHB-150PPL	150	3	300	Para-polyphenylene
YHHB-200PPL	200	3	300	Para-polyphenylene
YHHB-250PPL	250	3	300	Para-polyphenylene
YHHB-300PPL	300	3	300	Para-polyphenylene
YHHB-400PPL	400	3	300	Para-polyphenylene
YHHB-500PPL	500	3	300	Para-polyphenylene
YHHB-1000PPL	1000	3	300	Para-polyphenylene

---