Current location:Home > colorful ironing board covers_κεραμικό κάλυμμα σιδερώστρας >

colorful ironing board covers_κεραμικό κάλυμμα σιδερώστρας

ማስታወቂያ የእርቅ አወቃቀር መከለያ ይሁን የእንጽ የማስታወቂያን ዕውቀት በኣዳም የተደገመ ሐሳብ ወይም የሚታወቅ የመነሻ ምንጭ ነው። ከሚናገር ሁሉ ለእንጽ ይህ...
ትቢያ መክፈቻ ለመቀላቀል
2025-08-16 08:30
Transforming the tedious task of ironing into a straightforward, efficient endeavor often hinges on...
standard ironing board cover
2025-08-16 08:18
Dans le monde d'aujourd'hui, où l'efficacité et la multifonctionnalité des accessoires ménagers prim...
couverture de planche à repasser
2025-08-16 07:41
The Versatile Solution Sticky Table Covers In our fast-paced world, the demand for convenience and e...
sticky table cover
2025-08-16 07:32
A long ironing board cover is not just an accessory; it's a vital component in ensuring efficient, s...
long ironing board cover
2025-08-16 07:23
An ironing board cover for the tabletop is an essential accessory for anyone looking to maintain a c...
ironing board cover tabletop
2025-08-16 06:50
Canopy ironing board covers have revolutionized the way we perceive the essential chore of ironing,...
canopy ironing board cover
2025-08-16 06:40
Selecting the perfect deluxe ironing board cover and pad is not merely a matter of aesthetics or fun...
deluxe ironing board cover and pad
2025-08-16 06:33
97cm x 33cm 다리미판 커버: 집안 다림질의 품격을 높이는 필수 아이템 고품질 다리미판 커버는 효율적이고 깔끔한 다림질을 위한 핵심 요소입니다. 특히 97cm x 33c...
다리미판 커버 97cm x 33cm
2025-08-16 06:00
Nel mondo dell'efficienza domestica, l'accessorio che spesso passa inosservato ma che gioca un ruolo...
copertura tavola da stiro e tampone 54 x 18
2025-08-16 05:58
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • Latest articles



    Pure PVB is non-toxic and harmless to human body. In addition, ethyl acetate or alcohol can be used as solvent, so PVB is widely used in printing ink of food containers and plastic packaging in European and American countries.

    Storage safety properties

    PVB can be stored for two years without affecting its quality as long as it is not in direct contact with water; PVB shall be stored in a dry and cool place and avoid direct sunlight. Heavy pressure shall be avoided during PVB storage.

    Solubility

    PVB is soluble in alcohol, ketone, ester and other solvents. The solubility of various solvents changes according to the functional group composition of PVB itself. Generally speaking, alcohol solvents are soluble, but methanol is more insoluble for those with high acetal groups; The higher the acetal group, the easier it is to dissolve in ketone solvents and ester solvents;

    PVB is easily soluble in cellosolve solvents; PVB is only partially dissolved in aromatic solvents such as xylene and toluene; PVB is insoluble in hydrocarbon solvents.

    Viscosity characteristics of PVB solution

    The viscosity of PVB solution is greatly affected by the formula of solvent and the type of solvent; Generally speaking, if alcohol is used as solvent, the higher the molecular weight of alcohol, the higher the viscosity of PVB solution;

    Aromatic solvents such as xylene and toluene and hydrocarbon solvents can be used as diluents to reduce the viscosity of PVB solution; The effect of PVB chemical composition on viscosity is summarized as follows: under the same solvent and the same content of each base, the higher the degree of polymerization, the higher the solution viscosity; Under the same solvent and the same degree of polymerization, the higher the acetal group or acetate group, the lower the solution viscosity.

    Dissolution method of PVB

    Where mixed solvents are used, the dissolution step is to first put aromatic solvents (such as xylene, toluene, etc.) or ester solvents (such as n-butyl acetate, ethyl acetate, etc.) into the mixing, slowly put PVB into the mixing, and then add alcohol solvents (such as n-butanol, ethanol, etc.) after PVB is dispersed and expanded,

    At this time, the dissolution time can be shortened by heating; Using this dissolution method, the formation of lumpy PVB can be avoided (because the dissolution time will be several times after the formation of lumpy PVB), so the dissolution speed can be accelerated. Generally, the ratio of aromatic and alcohol solvents is 60 / 40 ~ 40 / 60 (weight ratio), and PVB solution with low viscosity can be prepared.

    The solvent composition contains 2 ~ 3wt% water, which can improve the hydrogen bonding strength of alcohol solvents and help the solubility of PVB.

    Processing properties

    Although PVB resin is a thermoplastic, it has little processability before plasticizer is added. Once plasticizer is added, its processability is very easy.

    The purpose of general coatings and adhesives is to change the resin characteristics by adding plasticizers to meet the application requirements, such as film softness, reducing the TG point of the resin, reducing the heat sealing temperature, maintaining low-temperature softness, etc.

    Compatibility

    PVB can be compatible with a variety of resins, such as phenolic resin, epoxy resin, alkyd resin and 
    MELAMINE resin.

    B-08sy, b-06sy and b-05sy with high acetal degree can be mixed with nitrocellulose in any proportion. PVB and alkyd resin are partially compatible. General PVB is compatible with low molecular weight epoxy resin, while high molecular weight epoxy resin needs PVB with high acetal degree to be compatible with each other.

    As a reliable lithopone manufacturer, we are committed to providing our customers with high-quality products that meet their specific requirements and standards. We understand the importance of delivering consistent and reliable products to our clients, and we strive to exceed their expectations with our exceptional product quality and customer service
    pigment
    pigment lithopone manufacturer.