90
...
2025-08-15 01:16
521
≥99.0
Polyvinyl Butyral Resin (PVB) is a solvent Resin synthesized by the acetal reaction of Polyvinyl Alcohol (PVA) and butyraldehyde in contact with coal.
Because Pvb Resin itself contains a lot of hydroxyl groups, it can bridge with some thermosetting resins to improve the properties of chemicals and film hardness.
Because PVB resin has the above excellent characteristics, it is widely used in adhesive safety glass intermediate film of automobile and building, rust cutting primer, baking paint, wood paint, printing ink, adhesive of electronic ceramics and printed circuit board, adhesive between metal and metal, between metal and plastic, modifier of hot-melt adhesive, iron dimension waterproof processing of textile, etc. A variety of new industrial applications are also continuously developed and applied.
The general characteristics of PVB are as follows:
The appearance of polyvinyl butyral (PVB) resin is white spherical porous particles or powder, and its specific gravity is 1:1; However, the filling density is only 0.20 ~ 0.35g/ml.
Thermal properties
The glass transfer temperature (TG) of polyvinyl butyral (PVB) resin ranges from 50 ℃ of low degree of recombination to 90 ℃ of high degree of recombination; The glass transfer temperature can also be adjusted by adding an appropriate amount of Plasticizer to reduce it below 10 ℃.
Mechanical properties
The coating of polyvinyl butyral (PVB) resin has good water resistance, water resistance and oil resistance (it is resistant to aliphatic, mineral, animal and vegetable oils, but not to sesame oil). PVB is widely used in printing inks and coatings because it contains high hydroxyl groups and has good dispersibility to pigments.
In addition, its chemical structure contains both hydrophobic acetal and acetic ACID groups and hydrophilic hydroxyl groups, so PVB has good adhesion to glass, metal, plastic, leather and wood.
Chemical reaction
Any chemical that can react with secondary alcohol will also react with PVB. Therefore, in many applications of PVB, it is often used with thermosetting resin to bridge and harden with the hydroxyl group of PVB, so as to achieve the characteristics of chemical resistance, solvent resistance and water resistance.
Of course, films with different characteristics (such as hardness, toughness, impact resistance, etc.) can be prepared according to different types of thermosetting resin and different mixing ratio with PVB.
Safety properties
Wait, it gets hotter.
If you love tapes like we do, then you know how important electrical tape is. Today, I want to talk about 3M Rubber Electrical Tapes. As experts in all kinds of tapes we are excited to share our knowledge and enthusiasm for these amazing tapes and the applications they can be used in.
Elongation: 685%
If you’re looking for tape covering all bases, butyl tape is excellent. Among its many uses, you can use butyl tape alongside to bond roofing and building materials together, and it is the perfect material for several home renovation projects. Its multifunctionality, affordability and reliability make it a firm favourite in the industry and having a roll laying around the house can prove really handy!
This tape comes in eight colors:
The fireproof belt shall be properly stretched and wrapped on the fireproof part of the cable in the form of a 1/2semi cover. The length of the lap shall meet the requirements of the design department. At the end of wrapping, stretch the fireproof wrapping beltvigorously, and double wrapping with glass fiber.
Polyethylene film tape (63507) is a 7-mil thick, low-density polyethylene tape coated on one side with a synthetic rubber adhesive that stays permanently tacky. This tape bonds well through a wide range of temperatures and has a particularly good bonding ability at low temperatures. It is conformable, waterproof, tear-resistant, and chemical resistant.
Acrylic tapes are known for strong bonding and tolerance of high temperatures. There are two types of acrylic tapes, water-based acrylic and solvent acrylic. Water-based acrylics are less expensive and usually found in your economical Tapes. Most inexpensive imported tapes from China and Indonesia are water-based Acrylics. Solvent based acrylics cost more but are much more aggressive and work well with a lot of the recycled corrugated paper boxes being produced today.