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        Strata wood

        Strata wood

        詳細說明

         

        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:






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