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Analysis on the performance of PVDF tube and the application of PVDF tube

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Analysis on the performance of PVDF tube and the application of PVDF tube

  • Categories:Industry news
  • Author:FEP tube lady
  • Origin:FEP tube lady
  • Time of issue:2000-08-10 15:23
  • Views:

Analysis on the performance of PVDF tube and the application of PVDF tube

  • Categories:Industry news
  • Author:FEP tube lady
  • Origin:FEP tube lady
  • Time of issue:2000-08-10 15:23
  • Views:

  Analysis on the performance of PVDF tube and the application of PVDF tube

  1. Introduction of PVDF tube

  PVDF tube (polyvinylidene fluoride tube) has tightly arranged molecular chains, strong hydrogen bonds, natural flame resistance, crystallinity 65%~78%, long-term use temperature -40~150℃. Its outstanding features are high mechanical strength, good radiation resistance, and can be used outdoors for a long time without maintenance. It has good chemical stability and is not corroded by acids, alkalis, strong oxidants and halogens at room temperature. It is widely used in petrochemical, electronic and electrical, steel plant pickling, acid and alkali liquid transportation.




Picture 1: PVDF tube source: Shenzhen Dankai

  Features of PVDF tube (polyvinylidene fluoride tube):

  1 Very good chemical resistance, not corroded by acids, alkalis, strong oxidants, and halogens at room temperature.

  2 High impact resistance, wear resistance, creep resistance, high mechanical strength and good toughness.

  3 Good heat resistance, non-combustibility, long-term use temperature -40~150℃, and high dielectric strength.

  4 It has outstanding weathering resistance, ozone resistance, UV resistance and nuclear radiation resistance.

Performance item Test condition [ state ] Test Methods Test Data Data unit
Basic performance The melt flow rate 230℃,5000g JIS K-7210 20 G/10min
Physical properties proportion 30℃ ASTM D-792 1.78 g/ml
Mold shrinkage    Injection molding 2.6(230) %
Mechanical behavior Shore hardness    ASTM D-2240 78 D scales
Tensile modulus ISO R-527 2280 MPa
Tensile yield strength 50mm/min ISO R-527 59 MPa
Elongation at break 50mm/min ISO R-527 60 %
Squeeze strength 1.5mm/min ASTM D-695 80 MPa
Bending strength 1.5mm/min ASTM D-790 62 MPa
IZOD notched impact strength    ASTM D-256 10 KJ / m2
Tensile yield strength 5mm/min ISO R-527 53 MPa
Flexural modulus 1.5mm/min ASTM D-790 1540 MPa
die 1.5mm/min ASTM D-695 1320 MPa
Rockwell hardness    ASTM D-785 116 R scale
Electrical performance Volume resistivity    JIS K-6723 1015 Ω.cm
Thermal performance Melting point 240℃,S.R.50S-1 Capirograph 12000 Poise
Heat distortion temperature 0.45MPa ASTM D-648 156 °C
Critical shear vate of melt fracture 240°C Capirograph 1000 S-1
Heat distortion temperature 1.82MPa ASTM D-648 100 °C
Coefficient of Linear Thermal Expansion 30-80℃ DARK 17 10-5/℃
Vicat softening temperature 1000g lead ASTM D-1526 174 °C
The sulfur 240℃,S.R.50S-1 Capirograph 1.3  
Other properties Tm 10 ℃ / min DSC 177 °C
Tc 10 ℃ / min DSC 142 °C
U inh DMF30℃   0.85 dl/g
Tc 10 ℃ / min DSC 56 J/g


  2. PVDF pipe specifications (polyvinylidene fluoride pipe)

  Material: PVDF pipeline construction is a vinylidene fluoride homopolymer or a copolymer of vinylidene fluoride and other less-recorded fluorine-containing vinyl monomers. PVDF resin combines the characteristics of fluorine resin and general resin, in addition to good chemical resistance In addition to high temperature resistance, oxidation resistance, weather resistance, and radiation resistance, PVDF tubes also have special properties such as piezoelectricity, dielectric properties, and pyroelectric properties. They are currently the second largest among fluoroplastics. product. PVDF tube factory direct sales, PVDF tube prices, PVDF tube manufacturers offer.




  Picture 2: PVDF tube source: Shenzhen Dankai

  PVDF pipe specification table (polyvinylidene fluoride pipe):

  Common specifications: inner diameter * outer diameter (unit: mm)

  Metric system: 2*4 3*5 4*6 5*7 6*8 8*10 8*12 9*12 10*12

  12*14 14*16 16*18 18*20 20*22

  British system: 1/8 inch (1.6*3.2) 1/4 inch (3.96*6.35) 3/8 inch (6.35*9.525)

  1/2 inch (9.5*12.7) 3/4 inch (15.88*19.05) 1 inch (22.2*25.4)

  Other specifications can be produced, the inner diameter is 0.5mm to 200mm, and the wall thickness is 0.12mm to 3mm.

  Three, PVDF (polyvinylidene fluoride tube) connection method

  1 hot melt butt welding, 2 hot melt socket.

  Fourth, the use of PVDF tube (polyvinylidene fluoride tube):

  At present, the materials of high-purity water and ultra-pure water transportation pipelines are all PVDF pipes. Because PVDF pipes have good chemical stability, cleanliness, smoothness and other properties, they have been widely used in the microelectronics industry and have achieved good results. Social and economic benefits.

  Protection of electronic components in high temperature and oily environment; insulation and protection of resistance capacitors and thermal couples; mechanical protection of various metal wires; insulation, protection and reinforcement of end, connection, and termination of wires. Because of the excellent product characteristics of PVDF, it is now widely used in various fields.

  The pvdf pipeline has good chemical stability, chemical resistance and heat stability. It can be used for a long time in the temperature range of -62℃- +150℃, and can withstand all salts, acids, alkalis, aromatics, halogens and other media except strong solvents. It is flame-retardant, fatigue-resistant, hard to break, wear-resistant, self-lubricating, and it is a good insulating material. Its mechanical strength is high: Compared with PTFE: the tensile strength is 2 times larger, and the compressive strength is 6 times larger. Wear resistance: only slightly inferior to NYLON6, UHMWPE.

  When temperature and pressure exist at the same time, its performance is much better than other plastic pipes. It is mainly used for the transportation of corrosive media in the recovery and regeneration of waste acid in the smelting industry.

  Shenzhen DanKai Technology Co., Ltd. (ShenZhen DanKai Technology Co.,ltd.), whose predecessor is Dongguan Dandi Insulation Material Co., Ltd. Fluoroplastic Material Factory, established in 1998, specializes in FEP, PFA, PTFE and other fluoroplastic pipes R&D, production and sales of rod, sheet and film products and other insulating materials. The company has a senior R&D team with international standards and a production line of fluorine plastic products imported from abroad. Some fluoroplastic products have passed ISO9001, SGS, FDA certification, and have been fully affirmed by domestic and foreign cooperative customers such as Huawei, Foxconn, Midea, ZTE, Intel, and AirTAC. The main products of the company are: ①Tubes: Ptfe tube, Fep tube, Pfa tube, Pvdf tube; ②Heat shrinkable tube: Ptfe heat shrinkable tube, Fep heat shrinkable tube, Pfa heat shrinkable tube, Pvdf heat shrinkable tube; ③Plate rod Membrane: Ptfe board and rod film, Fep board and rod film, Pfa board and rod film, Pvdf board and rod film; ④Insulation materials: silica gel, PE, PVC, UPE, etc.; ⑤Special category: PFA imported connector, spiral tube, spring tube , Rotary cut tube, welding rod, tee, straight-through, gasket, joint, taper rod, flared tube, sealing tube, braided tube, bellows, etc. At the same time, fluorine plastic products of various specifications can be customized and processed according to customer requirements.

  This article is original by Miss Teflon tube, welcome to pay attention, and let you grow knowledge together!

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