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Home   /   Product   /   High Strength and High Modulus PVA Fiber

High Strength and High Modulus PVA Fiber

LIWEI CHEMICAL CO. LTD

 

 

Specifications

High Strength and High Modulus PVA Fiber

 

Item

Unit

Type 1

Type 2

Count

Dtex

2.0±0.25

2.0±0.25

Tenacity

CN/dtex

11.5 min

12.8 min

Elongation

%

7.5 max

7 max

Modulus (0.1-0.4%)

CN /dtex

280±20 min

290 min

Hot water solubility (90℃,1hr)

%

2 max

2 max

Density

g/cm3

1.29

1.29

Cut Length

mm

5, 6

5, 6

 

Packing & Storage

Packing Packed in 180 woven P. P. Bag, 12.96MT / 20’FCL without pallets.
Storage 20°C 2 years
Shipping Room temperature 5-30℃ in China; may vary elsewhere
Free Quote

General Information
Chemical & Physical Properties
Safety Information
Synthetic Route

Common Names Polyvinyl Alcohol fiber
Structure (C2H4O)n
CAS No. 9002-89-5 Boiling Point(℃) No data available
Molecular Weight 44.0526 Melting Point(℃) 200 °C
Appearance White crystalline Vapor Specific Gravity No data available
HS Code 390530 Flash Point(℃) No data available
Solubility Polyvinyl alcohol fiber can be blended with other fibers, and then dissolved after textile processing, to obtain fine yarn high-grade textile Autoignition Temperature(℃) No data available
Safety Phrases None
RIDADR None
WGK Germany None
Packaging Group None
Hazard Class None
SYMPTOMS PREVENTION FIRST AID
Inhalation None None None
Skin None None None
Eyes None None None
Ingestion None None None
The average molecular weight of PVA fiber is 60000 ~ 150000, the thermal decomposition temperature is 200 ~ 220℃, the melting point is 225 ~ 230℃. Polyvinyl alcohol fiber can be prepared by wet spinning and dry spinning. Polyvinyl formaldehyde fiber can be obtained by acetalizing the heat treated polyvinyl alcohol fiber. The acetalization process is to wash the silk bundle to remove mirsolvite (sodium sulfate), from the aldehyde solution (composed of aldehyde agent formaldehyde, diluent water, catalyst sulfuric acid, swelling inhibitor sodium sulfate) through the process of washing. The strands can also be cut into short fibers, transported to the aftertreatment machine by air flow, in stainless steel net for acetalization. In order to improve the performance of the fiber, the polyvinyl alcohol solution containing the crosslinking agent boric acid (the concentration is 16%) can be wet-spun. The resulting primary fiber is solidified in the alkaline solidification bath. After neutralization, water washing, multi-stage high tensile and heat treatment, the filament with the strength of 106 ~ 115cN/dtex can be obtained. This product is called boron-containing wet filament.
Frequently Asked Questions

Features:

PVA high strength and high modulus fiber takes polyvinyl alcohol as its major raw materials. It has good prosperities such as high modulus, high strength, alkali and acid resistance, heat resistance, anti-crack, anti-infiltration and so on. High strength and high modulus PVA fiber also has good compatibility with cement and other macromolecule material and can prevent the microcrack caused by plastic shrinkage of the concrete.
PVA Properties
Polyvinyl Alcohol Poval is high polymer with excellent characters to dissolve easily in water but not to dissolve in common organic solvent and organic acids, and with excellent film-forming property,oil resistant, chemical-resistant. It can react with formaldehydes to form polyvinyl acetal.

Application and Uses:

1) High strength and high modulus PVA fiber is the good substitution of Asbestos and glass fiber. 2) It is widely used in building materials, such as cement board, non asbestos material for heat and attrition resistance, plastic and rubber reinforcement. 3) It is a good reinforcing material for upholstery and package. 4) It can also be used in making high strength fishing meshes, cables, safety nets. 5) With excellent ability of anti-alkali, High strength & modulus PVA fiber is suitable for any type of the cement.

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