Technology and equipment for production of porous material from polytetrafluoroethylene by laser ablation

Description
Belarus research institute offers porous polytetrafluoroethylene (PTFE) material and equipment for its production.[br][/br][br][/br]Polytetrafluoroethylene has outstanding set of properties (high melting temperature, low coefficient of friction, chemical inertness etc.) which results in its wide usage. But because of those properties the processing of PTFE can be difficult and expensive and also leaves small choice of methods to produce PTFE fibers and porous materials from it.[br][/br][br][/br]In the developed method the solid PTFE is evaporated by a laser beam and condensed on cold surface as fibres. At present, the porous material produced in form of wool or felt. The wool consists of fibres 5-15 micrometers mean diameter and up to 10 mm length. The felt consists of shorter (0.2-2 mm) fibres that are fused at contact points.[br][/br][br][/br]Characteristics of PTFE-felt:[br][/br]* thickness: from 1 mm and up to ca. 20 mm[br][/br]* density: 300-400 kg/m3[br][/br]* mean pore size: 10-20 µm[br][/br]* open porosity: 80-90%[br][/br]* permeability factor: (0.5-5)*10e-12 m2[br][/br]* high surface hydrophobicity[br][/br]* chemical and thermal resistance is that of PTFE[br][/br]* tensile strength (non-reinforced): 0.02-0.03 MPa[br][/br]* elongation 15-20%[br][/br][br][/br]The method allows to form porous material on technological substrates, from which it is subsequently removed, and also directly on products, incl. surfaces of complex shape.[br][/br]

---

Technology Type
 Process
 Material

---

Development Stage
 Currently in use/production

---

Intellectual Property Rights
 Secret Know-How

---

Range of Applications
The material is used for fine filtration of any gases or liquids, incl. aggressive chemicals, over a wide range of temperatures (-150..+250 С). Compared to filters from metallic foams or porous metals, porous PTFE is more efficient in catching oil-water aerosols and have several orders of magnitude more contaminant capacity.[br][/br]Several trials were made to use porous PTFE in surgery as graft material for soft tissue defects.[br][/br]The porous PTFE can be used as a component of polymer composites to improve durability and hydrophobic properties.

---

Classifier Used at the Enterprise Europe Network
 Chemicals
 Materials

---

Classifier Used at the EU Innovation Relay Centres
 Industrial Manufacturing, Material and Transport Technologies

---

Classifier Used at the Technology Transfer Network of yet2.com Inc.
 Manufacturing
 Materials

---

Classifier Used at the UNIDO
 Manufacture of Non-Metaliic Mineral Products

---

Preferable Regions
 North America
 South America
 Europe
 Asia
 Africa
 Australia

---

Type of Collaboration Sought
 Joint Venture
 License
 For Sale

---

Available Technical Assistance
 Documentation
 Personnel

---

Link to this profile: http://ictt.by/ShowRequests/ShowTitlesOffCat.aspx?loc=1&ru=0&id=2433