How to molded PTFE
PTFE commonly used method of compression molding, ram extrusion molding may also be used. Using dispersion polymerization can be obtained resin paste extrusion and calendering. The specific conditions were: pressure with pre-molded article shape, size, however, it usually 9.8-34.3MPa, plus a filler resin using 29.4-93MPa, the pressing direction of a thickness of about 600mm big blank should also have 20 a 30min dwell time.
There is also the PTFE molded into the sintered blank mold preheated to a sintering temperature, the - side pressure, while cooling the hot press method; way squeeze automatic compression molding method, and the use of pressurized fluid such as compression molding method.
Extrusion is the use of pre-sintered PTFE material for rods, tubes and profiles approach. Usually divided into two kinds of vertical or horizontal, but due to uneven filling horizontal pipe material production, the multi-purpose vertical extrusion process. The process conditions were as follows:
① rod diameter of 13 to 40mm, die size of 15.1 to 46.0mm, heated length 500-1100mm, the heating temperature is 400 to 350 ℃, the cooling length of 150-200mm, the extrusion rate was 4-1m / h .
② a pipe diameter of Φ15 Φ40/Φ8 a Φ25, feed cylinder and the mandrel outer diameter dimensions of 27.8 Φ16.5-44.5/Φ8.9 a heated length of 350 - 800, the heating temperature is 400 a 350 ℃, the cooling length of 150 to 250mm, an extrusion rate of 3.8 1.4m / h. PTFE extrusion technology to further improve the extrusion direction and forming a plurality of speed products.
Usually dispersed PTFE paste extrusion molding method, a first dispersion-type PTFE resin and extrusion aids such as crude ligroin (b.p. 90 a 120 ℃) or a mixture of white oil, put in a glass or stainless steel flask roll for 30 minutes to uniformly dispersed and absorbed, place 8-12h, pressed into a blank material into the extruder chamber, the pressure 0.69-3.43MPa pressure holding time of 30 to 60 seconds. Adopt a process made subject to continuous extrudate drying oven (100 to 300 ℃) will extrusion aids removed. And then sintered into a sintering furnace (360 a 380 ℃) rapid cooling after sintering to obtain good products.
There is also the PTFE molded into the sintered blank mold preheated to a sintering temperature, the - side pressure, while cooling the hot press method; way squeeze automatic compression molding method, and the use of pressurized fluid such as compression molding method.
Extrusion is the use of pre-sintered PTFE material for rods, tubes and profiles approach. Usually divided into two kinds of vertical or horizontal, but due to uneven filling horizontal pipe material production, the multi-purpose vertical extrusion process. The process conditions were as follows:
① rod diameter of 13 to 40mm, die size of 15.1 to 46.0mm, heated length 500-1100mm, the heating temperature is 400 to 350 ℃, the cooling length of 150-200mm, the extrusion rate was 4-1m / h .
② a pipe diameter of Φ15 Φ40/Φ8 a Φ25, feed cylinder and the mandrel outer diameter dimensions of 27.8 Φ16.5-44.5/Φ8.9 a heated length of 350 - 800, the heating temperature is 400 a 350 ℃, the cooling length of 150 to 250mm, an extrusion rate of 3.8 1.4m / h. PTFE extrusion technology to further improve the extrusion direction and forming a plurality of speed products.
Usually dispersed PTFE paste extrusion molding method, a first dispersion-type PTFE resin and extrusion aids such as crude ligroin (b.p. 90 a 120 ℃) or a mixture of white oil, put in a glass or stainless steel flask roll for 30 minutes to uniformly dispersed and absorbed, place 8-12h, pressed into a blank material into the extruder chamber, the pressure 0.69-3.43MPa pressure holding time of 30 to 60 seconds. Adopt a process made subject to continuous extrudate drying oven (100 to 300 ℃) will extrusion aids removed. And then sintered into a sintering furnace (360 a 380 ℃) rapid cooling after sintering to obtain good products.
Product Catalogue
Supplier Details
-
Address:Second floor, building 1, Zone E, the 4th Industrial Zone, BITOU, Songgang Street, Bao'an District
-
Phone:13826542549
-
Tel:86-755-29719578
-
Fax:86-755-29719579
-
Email:
Deutsch
Español
Français
Italiano
Português
日本の
한국어
العربية
български
hrvatski
česky
Dansk
Nederlands
suomi
Ελληνικά
हिन्दी
norsk
Polski
Română
русский
Svenska
中文