PRODUCTS

Strata Wood

    详细说明

     

    StrataWood material, is a press laminated wood in crosswise direction, based on high quality and selected beech veneers, stick together with a Electrical thermosetting synthetic resins under high pressure and temperature.

     

    The most important characteristics of the StrataWood , are:

          ●Good Electrical properties

          ●Excellent absorption of transformer oil

          ●High mechanical strength

          ●Low and high temperature resistance

          ●Good resistance to the abrasion and wear

     

    Due to the characteristics of the product , StrataWood is mainly use in the electrical oil transformers applications as high electrical insulation material as pressure beams, step blocks, pressure spare parts, top and bottom support coils, potential rings, pressure rings , spacers, etc.  For his mechanical strength, Strata Wood can be also use for many applications as abrasion resistance material under stress.

     

    Standard Range of Production

    The StrataWood is produced in 3 different densities,

     



    Type : PWL-0 : Low Density ,         0.90 ~1.10 g/cm3 

    Type : PWL-1:  Medium Density,   1.10 ~ 1.20 g/m3

    Type : PWL-2:  High Density ,          1.20 ~1.30 g/cm3




    The lamination is made on crosswise veneers , and the standard thickness of the veneer is 2 mm. Under specification we can produce from 1 mm , 1,2 mm and 1,5 mm thickness veneer too.

    For non electrical application and according specific requirements , we can produce in a sheets on parallel veneer.

     

    Thickness : 10 mm to 100 mm

     

    Standard Sheet Sizes

    1000  x  2000mm  

    1000  x  1500mm  

    1500  x  1500mm,

    1500  x  3000mm,

    3000  x  3000mm  

    3000  x  4200mm

     

    We can machine any kind of pieces produced with C.N.C equipments with sizes according sheets availability according costumers drawings.


    DATA SHEET    StrataWood


    PHYSICAL PROPERTIES

    TYPE

    PWL-0

    PWL-1

    PWL-2


    Unit

    Crosswise

    Crosswise

    Crosswise

    Density

    g/cm3

    0.90 ~ 1.10

    1.10 ~1.20

    >1.20 ~ 1.30

    Moisture

    %

    ≤ 7

    ≤ 7

    ≤ 7

    Shrink Ratio after dried

    %

    ≤ 1.5

    ≤ 1.5

    ≤ 1.5

    Oil Absorption

    %

    >20

    >15

    >7

    Inter-reaction with transformer oil


    Very Good

    Very Good

    Very Good

    Mechanical Properties

    Tensile Strength                           

    Parallel to the layers

    Mpa

    ≥ 50

    ≥ 55

    ≥ 80

    Compressive Strength

    Parallel to the layers  

    Vertical to the layers  

     

    Mpa

    Mpa

     

    ≥ 50

    ≥120

     

    ≥ 65

    ≥130

     

    ≥ 100

    ≥150

    Interlaminar shear strength

    Mpa

    ≥6

    ≥7

    ≥7

    Flexural Strength

    Parallel to the layers   

    Vertical to the layers   

     

    Mpa

    Mpa

     

    ≥ 100

    ≥100

     

    ≥ 115

    ≥ 115

     

    ≥ 120

    ≥120

    Module of elasticity in flexure      

    Parallel to the layers

    Mpa

    ≥7000

    ≥8000

    ≥10000

    Electrical  Properties

    Insulation Resistance

    M?*m

    ≥108

    ≥108

    ≥108

    Electrical Strength

    (Intransformeroil

    at 20oC Vertical                    

    at 20oC Surface

    at 90oC Vertical

    at 90oC Surface

    MV/m kV/25 mm

    MV/m kV/25 mm

     

     

    ≥ 9

    ≥ 60

    ≥ 10

    ≥ 50

     

     

    ≥ 9

    ≥ 60

    ≥ 10

    ≥ 50

    ≥ 9

    ≥ 60

    ≥ 10

    ≥ 50

    Dielectric Loss Factor at 50 Hz        

    at 20oC

    at 90oC


     

    ≤ 0.02

    ≤ 0.13

     

    ≤ 0.02

    ≤ 0.13

     

    ≤ 0.02

    ≤ 0.13

    Comparative dielectric constant        

    at 20oC

    at 90oC


     

    ≤ 3.0

     ≤ 3.6

     

    ≤ 3.0

    ≤ 3.6

     

    ≤ 3.0

    ≤ 3.6


    Laminated machine:


    Package and loading: