PTFE, PFA, FEP, PVDF Fluoroplastic products industry experts
FAQ
23-03
What is the melt index of a fluoroplastic resin? What is the melt index of a material?
What is the melt index of a fluoroplastic resin? What is the melt index of a material?
What does the 1. material melt index mean?
Melt Flow Index (English: Melt Flow Rate or Melt Flow Index), the full name of the melt flow index, or melt flow index, melt index, is a value that represents the fluidity of plastic materials during processing. It is the American Institute of Measurement Standards (ASTM) according to the United States DuPont (DuPont) customary method of identification of plastic properties developed, the test method is:
First, let the plastic particles melt into plastic fluid, and then within a certain time (10 minutes), a certain temperature and pressure (different material standards), through a diameter of 2.1mm round tube outflow after the determination of its grams (g) number. The larger the value, the better the processing fluidity of the plastic material, and vice versa.
Introduction of 1.1 Melt Index
The so-called melt mass flow rate refers to the average weight of the extruded samples in each section converted to 10 minutes of extrusion. The unit is (g/10min), expressed by MFR L
MFR = 600 units
Where: MFR-melt mass flow rate, g/10min;
m -- Average value of multiple sections of samples, g;
t -- Sample cutting time interval, s;
600-reference time (10 min),s.
Melt flow rate, formerly known as melt index, is defined as the amount of thermoplastic material extruded within a certain period of time under specified conditions, I .e. the mass of the melt passing through the standard die capillary every 10 min, expressed in MFR, in g/10 min. The melt flow rate can characterize the viscous flow characteristics of thermoplastics in the molten state, which has important guiding significance for ensuring the quality of thermoplastics and their products and adjusting the production process.
Determination of 1.2 melt index
The most commonly used test standard for melt index is ASTM D 1238, and the measuring instrument for this test standard is a melt index meter (MeltIndexer) in g/10 min.
What is the melt index of 2. fluoroplastic resin?
2.1FEP, taking Zhejiang Juhua as an example. Unit: g/10min. Melt index 0.8-32.0 range.
2.2PFA, taking Japan Daikin PFA used by Dankai as an example, unit: g/10min, melt index ranging from 1.5 to 30.0
2.3 others.
3. more issues welcome attention and discuss together.
Shenzhen Dan Kai Technology Co., Ltd., specializing in FEP, PFA, PTFE and other fluorine plastic tube rod sheet membrane products and other insulation materials research and development, production, sales and service of intelligent manufacturing enterprises.
ShenZhen DanKai Technology Co.,ltd. is an intelligent manufacturing enterprise specializing in the R & D, production, sales and service of FEP, PFA, PTFE and other fluoroplastic tube, bar, sheet and film products as well as other insulating materials.
The company has international standards of senior R & D team and the introduction of foreign fluoroplastic products production line, some fluoroplastic products through ISO9001, SGS, FDA certification.
The main products are: ① Pipe type: Ptfe PTFE pipe, Fep pipe, Pfa pipe, Pvdf pipe; ② Heat shrinkable tube type: Ptfe heat shrinkable tube, Fep heat shrinkable tube, Pfa heat shrinkable tube, Pvdf heat shrinkable tube; ③ Plate rod film: Ptfe plate rod film, Feep plate rod film, Pfa plate rod film, Pvdf plate joint film, etc. ⑤, spiral tube, spring tube, rotary cutting tube, welding rod, tee, straight, gasket, joint, cone rod, flared tube, sealing tube, braided tube, corrugated tube, etc. At the same time can be customized according to customer requirements processing production of various specifications of fluorine plastic products.
This article is originally created by Teflon's little sister. Welcome to pay attention and take you to grow knowledge together!
23-03
What are the advantages and disadvantages of PFA joint flaring and bead entry?
What are the advantages and disadvantages of PFA joint flaring and bead entry?
There are generally two forms of PFA joints, which are commonly used thermal expansion or flaring and bead entry. What are the advantages and disadvantages of the two? Especially the comparison of sealing?
PFA Flaring Fitting vs PFA Bead Fitting
1. Dankai PFA flare fitting:
-Advantages: better sealing, can withstand high temperature and chemical corrosion, easy to install and disassemble.
-Disadvantages: Not suitable for high-pressure applications, sometimes it is necessary to use O-rings to strengthen the seal.
2. Dankai PFA bead fitting:
-Advantages: Suitable for high-pressure applications, with good sealing and firmer connection.
-Disadvantages: More stringent processing requirements are required, installation and disassembly are more complicated, and it is easy to cause leakage.
Comparison summary:
-Dankai PFA flare joint suitable for general low pressure, temperature and flow requirements of the occasion.
-Dankai PFA bead fitting is suitable for applications under harsh conditions such as high pressure, high temperature and high viscosity.
-In general, which connector to choose should be determined according to actual needs and application scenarios.
This article is originally created by Teflon's little sister. Welcome to pay attention and take you to grow knowledge together!
23-03
High temperature mask meltblown cloth sealing strip
High temperature mask meltblown cloth sealing strip
Dankai-High Temperature Resistant Mask Meltblown Cloth Sealing Strip 2.0mm3.0mm PTFE Strip PTFE Solid Wire Teflon Rope
22-12
Do you know the characteristics of PFA?
PFA rod is also called soluble PTFE rod, PFA electrode, PFA rod
22-12
PFA manual valve characteristics and advantages
Use medium: strong acid, strong alkali, strong oxidant, etc. Use temperature:-200~260 Features: Excellent chemical stability, high heat resistance, cold resistance, low friction coefficient, is an excellent self-lubricating material, but low mechanical properties, poor mobility, thermal expansion.
22-11
What is PCTFE rod? Do you know its characteristics?
PCTFE material, (poly trifluoroethylene) domestic commonly known as: trifluoro, solid density 2.1~2.2, melting point 208~210 ℃. Resistance to heat, acid, alkali and organic solvents (except halides), but not to molten caustic and elemental fluorine. Strong chemical resistance, can be used as engineering plastics.
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