SikaBiresin® L402

Low density epoxy laminating paste for multi-purpose applications

SikaBiresin® L402 is an epoxy laminating paste for multi-purpose applications, e.g. for using as an alternative to the usual laminate build-up with laminating resin and reinforcing fabrics etc.  

  • Low density
  • High stiffness and dimensional stability
  • Low odor
  • Mixing by hand or mixer
 
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Overview

PRODUCT BENEFITS

  • Low density
  • High stiffness and dimensional stability
  • Low odor
  • Mixing by hand or mixer
 

Areas of Application

SikaBiresin® L402 can be used as an alternative to conventional laminate build-up systems, replacing laminating resins and reinforcing fabrics. The material is suitable for the production of molds and negatives, checking fixtures and positioning tools. The Product is also designed for the formation of fillets and local reinforcements. This product is suitable for experienced professional users only.  

Packaging

  

SikaBiresin® L402 (A)

Pail

10 kg

SikaBiresin® L400 (B)

Canister

1.4 kg

 

Product Details

Properties

Component A

SikaBiresin® L402

Component B

SikaBiresin® L400

Chemical base

Epoxy resin, fibrous paste

Amine

Color

 

mixed

White

Green

Light green

Mixing ratio

by weight

100 : 14

Density

 

cured

0.68 kg/l

0.97 kg/l

0.72 kg/l

Pot life (CQP021-3 / Gel Timer TECAM)

570 g at 23 °C

120 minutes

Demolding time

24 hours

Curing time

at 23 °C

7 days

Maximal laminating thickness

40 mm

Shore D hardness (CQP023-1 / ISO 868)

D1

D15

80 A

78 A

Flexural strength (ISO 178)

42 MPa A

Flexural modulus (CQP027-2 / ISO 178)

4000 MPa A

Glass transition temperature (CQP053-1 / ISO 11359)

70 °C A

Coefficient of thermal expansion (CQP053-1 / ISO 11359)

10 – 60 °C

24 x 10-6 1/K A

Shelf life

12 months

CQP = Corporate Quality Procedure

A) curing condition: 23 °C for 24 hours + 60 °C for 16 hours

Application

Surface preparation

The material and processing temperature shall be between 18 °C and 25 °C.

Application

If larger quantities are prepared it is recommended to divide the mass in smaller portions to avoid a faster exothermic reaction.
It is recommended to use a coupling layer and apply the ready-mixed laminating paste in an even layer.
Apply small patches to avoid air entrapment.
Smooth and compact the layers with a roller or by hand.

 

Depending on laminate thickness and processing temperature, the demolding time and the pot life of the laminating resin may vary.
Further post curing of the demolded part can improve the final mechanical properties.
Depending on the geometry and weight of the part, it is recommended to use a conformer while post curing.

STORAGE CONDITIONS

Both components must be stored at temperature between 15 °C and 25 °C in original unopened containers.

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