PVA Water Soluble Fiber

The Benefits of PVA Fibers by Xingji

• can be used as a primary reinforcement in place of welded wire mesh and rebar.

• have moduli of 25~40 GPa, that combined with tensile strengths of 120-240 ksi, mean your concrete will flex under loads that would cause other reinforcement methods to fail.

• bond within the concrete on a molecular level (hydrogen bonding).

• do not affect curing process chemically and can be used in any type of concrete
  
                        Polyvinyl alcohol (PVA) Fiber
   
  1. Introduction: 
  Polyvinyl alcohol fiber with high strength and high modulus polyvinyl alcohol (PVA) as the main raw material, made by wet spinning process.  
  The product has a high modulus, high strength, low elongation, pollution-free, non-toxic, and with acid, alkali, salt, abrasion, sunlight, corrosion, enzymes borers, cracking, anti-penetration, anti-UV, antiaging properties. The essential characteristic of these reinforcements is to absorb and distribute throughout the entire length - and thus attenuate - the tensions that are created in the material by an external load applied to the object.
  2.Feature: 
  At the first, PVA fiber has high tenacity  and modulus of  elasticity compare with other general organic fiber. 
  Second, bonding strength between fiber and cement matrix is strong. Also it is possible to control bonding strength by surface treatment.  
  At last, good durabilityhas been proved by long terms field test,and it has been used as fiber cement slate over twenty years ,because PVA fiber has got wide acceptance as a less hazardous and reasonable cost alternative.
  PVA Fiber

  We are the professional manufacture that specialized in researching, developing and manufacturing PVA (polyvinyl alcohol) and multifunctional PVA fibers (Polyvinyl Alcohol Fiber ).
  With the strong R&D capability and production capacity, our company has developed high-tech PVA fiber which is widely used in Textile, Construction and Paper industry. In recently years, we have researched and designed series PVAfiber.
  1)Water soluble cutting PVA fiber used in wool spinning, nonwoven fabric, and papermaking and battery diaphragm.
  2)High strength & modulus PVA fiber used in various kinds of construction materials with its anti-crack and anti-infiltration properties.

  Water soluble PVA fiber

  Water soluble PVA fiber is also called Water-soluble PVA short cutting fiber. It is obtained by subjecting to the conventional dry or wet spinning process, a solution prepared by adding to a polyvinyl alcohol aqueous solution, an adduct composed of a polyamide condensation product and 1-halogen-2,3-epoxy propane or ethylene glycol diglycidyl ether in the range from 5 to 50 percent by weight based upon the polyvinyl alcohol.
  At present, we could supply PVA fiber with various specifications (1.56dtex x 38mm, 1.56dtex×35mm, 1.56dtex x 4mm, 2.0dtex x 38mm, 1.56 denier x 8 mm.etc.) and different dissolving degree (20ºC/40ºC/70ºC/80ºC/90ºC).

  Item	1.56dtex(1.4D)x38mm(90ºC)	1.56dtex(1.4D)x38mm(80ºC)
  Density deviation rate (%)	±5	±5
  Length deviation rate (%)	±5	±3
  Soluble temperature(ºC)	≤93	70-85
  Dry breaking tenacity(CN/DTEX)	≥3.2	≥3.0
  Crimpnumber(Piece/25mm)	≥3.0	≥3.5
  Mirabilite contents (%)	≤0.10	≤0.15
  Non-soluble water (%)	≤0.25	≤0.10
  We also could produce the fiber according to customers' special request.

  Our fiber1.56dtex*38mm (80/90 degree) is widely used in nonwoven fabric in Textile industry. It enjoys great popularity for its great performance in many countries (Our home market/India/Thailand/ Vietnam/Columbia) that have prosperous Textile industry.
  Applications:
  1) Water soluble PVA fiber can be used to produce water-soluble non-woven fabric which is thinner, bulker and softer.
  2) The PVA fiber could produce papers exhibiting excellent wet strength.
  3) It can also be applied in battery diaphragm.
  4) Water-soluble PVA fiber in the textile spinning process of application can increase the count to improve the uniformity and sizing spun untwisted yarn.
  5) It also can be used as sanitary napkins, diapers and other medical treatments.
  6) It also can be used for sugar beet breeding, cultivation of crops and fruit trees cover.
  Storage and transport:

  It should be avoid moisture .The warehouse and package should be moisture-proof, water-proof, fireproofing, and pay attention to proper ventilation.

  High strength & modulus PVA fiber specifications:

  High strength and high modulus PVA fiber
  HSHM PVA fiber Type 1	HSHM PVA fiber Type 2
  Cut length: 5mm, 6mm or as customer special request with the minimum order.

• High strength & modulus PVA fiber

  High strength & modulus PVA fiber is good as a reinforcing cement material for its high modulus, high strength, anti-crack and anti-infiltration characters. It is a good substitution product for asbestos to reinforce the cement products as the recent worldwide restriction. It has high performance of acid & alkali resistance and a low damage in the long-time environment of acid & alkali. With good dispersibility, it can desperate easily in water.
  There are two types of High strength & modulus PVA fiber we producing cold applied in construction materials, such as cement reinforcing, insulation board and so on. It could also used in making high strength fishing meshes, cables, safety nets.

  Item	Type 1	Type 2
  Count(Dtex)	2.0±0.25	2.0±0.25
  Tenacity(CN/dtex)	≥11.5	≥12.8
  Elongation (%)	≤7.5 max	≤7 max
  Modulus(0.1-0.4%)( CN /dtex)	280±20	≥290
  Hot water solubility (90ºC,1hr)( %)	≤2	≤2
  Density(g/cm3)	1.29	1.29
  Cut Length(mm)	5, 6	5, 6

  Applications:
  1) Replacement of asbestos and manufacture the asbestos cement products.
  2) As the non asbestos material for heat and attrition resistance, plastic and rubber reinforcement.
  3) Making high strength fishing meshes, cables, safety nets.
  4) Make the light wallboard, insulation board and other building material.

  5) Making the sprayed concrete, such as tunnel, mine, culvert and side slope.