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Home   /   Product   /   Thermoplastic PVA

Thermoplastic PVA

LIWEI CHEMICAL CO. LTD

Specifications

1. P-PVA (Injection molding materials)

a. Normal temperature soluble type.

Melt Index(under 200℃,load 5kg), g/10min

2.5

Tensile strength,MPa

28.5

Tensile stain at break, %

123

Density,g/cm3

1.27

Vicat softening temperature(A50)

70

Melting temperature, ℃

179

Used as injection molding material, normal temperature soluble type P-PVA can soluble in water of normal temperature. The higher water temperature, the shorter time required for completely dissolved.

 

b. High temperature soluble type(dissove in water of 65℃ and upwards)


Melt Index(under 220℃,load 2.16kg), g/10min

4.2

Tensile strength,MPa

42.9

Breaking elongation, %

3.6~3.7

Density,g/cm3

1.275

Melting temperature, ℃

208

Used as injection molding material, high temperature soluble type P-PVA can soluble in water of more than 65℃. The higher water temperature, the shorter time required for completely dissolved.

 

c.Middle temperature soluble type( dissove in water of 30~65℃)
The higher water temperature, the shorter time required for completely dissolved.

 

2. P-PVA (film blowing materials)
a. Normal temperature soluble type.


Melt Index(under 200℃,load 5kg), g/10min

4.3

Tensile strength,MPa

35.7

Tensile stain at break, %

127

Melting temperature, ℃

183

Used as film blowing material,  normal temperature soluble type P-PVA can dissolve in normal temperature water(around 20℃), the completely dissoving time required is around 3~5minutes. PVA film produced by normal temperature soluble type P-PVA is of 2.5μm thickness.

b. High temperature soluble type(dissove in water of 65℃ and upwards)


Melt Index(under 220℃,load 2.16kg), g/10min

4.2

Tensile strength,MPa

73.7

Tensile stain at break, %

109.9

Density,g/cm3

1.279

Melting temperature, ℃

212

Used as injection molding material, high temperature soluble type P-PVA can soluble in water of more than 65℃. PVA film produced by high temperature soluble type P-PVA(film blowing materials) is of 5μm thickness.

c.Middle temperature soluble type( dissove in water of 35~60℃)

d. Instant film materials


Melt Index(under 190℃,load 2.16kg),g/10min

11.5

Tensile strength,MPa

26.9

Breaking elongation, %

81.55

Density,g/cm3

1.265

Melting temperature, ℃

175

 

The complete dissolving time of PVA film with 2.5μm thickness produced by P-PVA(Instant film materials) can be less than 30 seconds.

3. P-PVA(Oil well temporary plugging additive materials)
This kind of P-PVA material can be used directly. Based on required water soluble temperature and completely dissolution time under temperature constant state, it can be divided to 3 types.
a. Normal temperature soluble type.
The completely dissolving time required shall be 2-30 hours or longer time when normal temperature soluble type P-PVA(Oil well temporary plugging additive material) dissolve in water of constant temperature(0~30℃range).
b.Middle temperature soluble type
The completely dissolving time required shall be 2-30 hours or longer time when middle temperature soluble type P-PVA(Oil well temporary plugging additive material) dissolve in water of constant temperature(30~60℃range).
c. High temperature soluble type
The completely dissolving time required shall be 2-30 hours or longer time when high temperature soluble type P-PVA(Oil well temporary plugging additive material) dissolve in water of constant temperature(60~99℃range).

4. P-PVA(3D Printing)
This kind of P-PVA can be used to produce printing filaments for 3D printing consumables.

 

 


Packing & Storage

Packing

In 20kg paper bag.

Storage Powder 20°C 2 years; Floccule 20°C 2 years.
Shipping Room temperature 5-30℃ in China; may vary elsewhere
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Frequently Asked Questions

GENERAL INFORMATION

Polyvinyl Alcohol(PVA) is widely used environment-friendly material. After biodegradation & hydrolysis, it only generate water and carbon dioxide. It is of biodegradability, barrier resistance, antistativity, oil resistivity, good translucency and etc. But PVA cannot be thermoplastic processed through traditional method which limited its application. After many years of efforts, we have successfully developed the polyvinyl alcohol resin particles that can be melting-thermoplastic processing. It is called thermoplastic-polyvinyl alcohol(P-PVA, P-PVOH).
Thermoplastic-PVA is suitable for the equipment of injection molding, film-blowing and wiredrawing. Through injection molding, film-blowing and wiredrawing methods to produce water soluble film, container and injection products can largley reduce production cost, improve product performance.

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