Polyvinyl Butyral (PVB)
Polyvinyl butyral, also known as PVB, has good flexibility and transparency. It also shows good performance characteristics in terms of impact resistance, hydrolysis resistance, heat and cold resistance, etc. In particular, the rapid development of the automotive and construction industries has significantly driven the development of polyvinyl butyral materials
Polyvinyl butyral (PVB) is a synthetic resin made by condensation reaction of polyvinyl alcohol and n-butyraldehyde with hydrochloric acid as catalyst, abbreviated as PVB in English.
It has not only high transparency, good cold resistance, water resistance, film formation and impact resistance, and is widely used in glass interlayer, flower paper for porcelain, metal protection paint, water pine paper, aluminum foil paper, edge paint, fiber treatment agent, parts making, printing ink, dye, etc.
1. Application in security glass interlayer
Polyvinyl butyral has good light transmission properties, and the refractive index of glass is almost the same. The refractive index of polyvinyl butyral is almost the same as that of glass, and it has strong weathering resistance and can keep the shape stability. At the same time, the also has a very strong flexibility, in the impact test, polyvinyl butyral In impact tests, polyvinyl butyral outperforms many resin materials. Based on these advantages, PVB is used in a large number of security window films.
2. Application in ceramic flower paper
Ceramic flower paper is actually based on wood-based paper covered with a layer of polyethylene Butyral film, and then printed with a pattern to have the manufacture of ceramic flowers. The manufacturing method is very easy and the cost is very low. In recent years, with the development of ceramic market, the China’s polyvinyl butyral material in the ceramics industry has increased year by year, and its The amount used is close to 20% of the total production of polyvinyl butyral.
3. Application in coatings
Conventional paints such as baking paints, varnishes and primers are made from polyvinyl butyral aldehyde mixed with other resins. The hydroxyl group in the polyvinyl butyral molecule provides a reactive chemical group to the thermosetting resin. The hydroxyl group in the polyvinyl butyral molecule provides a reactive chemical group to the thermosetting resin.
4. Application in adhesives
With its superb elasticity, toughness and adhesion, polyvinyl butyral is an excellent hot melt base material and has many applications in the field of adhesives. Tests have found that Most of the adhesives containing polyvinyl butyral are thermosetting, hot-melt or structural adhesives. structural adhesives. They can be mixed with phenolic resins for the adhesion of metal products. This method effectively replaces the use of metal rivets and saves a great deal of This method effectively replaces the use of metal rivets and saves the use of metal consumables.
5. Application on aluminum foil paper
The rapid development of various industries since the reform and opening up has also led to the development of China’s packaging industry. The development of the industry, the performance requirements for packaging materials are also increasing. Polyethylene Aluminum foil paper with polyvinyl butyral as coating has been developing rapidly in recent years by virtue of its good isolation and the reduction of packaging cost. The use of polyvinyl butyral as a coating has led to rapid development in recent years.
6. Applications in engineering plastics and fibers
Polyvinyl butyral can be used as a base material for FRP or directly processed by injection molding into high strength, impact resistant plastic pipes, rods or parts. It can also be processed directly into high-strength, impact-resistant plastic pipes, rods or parts through the injection molding process.
7. Other applications
With the development of material science and technology, researchers and scholars have explored many innovative applications based on the properties of polyvinyl butyral. properties, many innovative applications have been explored. In addition, polyvinyl butyral can also be used in new applications such as artificial sponges, printed circuits and biological carriers in the medical field. Many new fields of application have been identified.
- Small Package: 20/25kgs per bag
- Bulk Package : 600 – 700kgs per Bulk bag
- Storage: It should be stored indoor in a well ventilated and dry room. Prevent exposure to dampness, sunlight and rain.
Adhesive grade PVB resin parameter
White or slightly yellow powder, no visible impurity
(-1 viscometer method)
Polyvinyl butyral, %
68~85 69~85 70~85
Ash, %, ≤
Film grade PVB resin parameter
Item & Index
White or slightly yellow powder, no visible impurity
Volatile, %, ≤
Hydrogen chloride, ≤
ET2H, %, ≤
≥95(430nm wavelength spectrophotometer)
≥98(660nm wavelength spectrophotometer)
Melt index, g/10min
Film(transmittance), %, ≥
Film(Haze), %, ≤
0.3(Grade A) 0.4(Grade B) 0.6(Grade C)
Yellow index, %, ≤
0.5(Grade A) 0.6(Grade B) 0.8(Grade C)
Density, g/cm3, ≥
Inquiry & Sample Request
If you need more information about our products or need samples for test, Please fill in and submit the following form.
Any inquiry or request from you will be processed within 1 working day