Product Data Sheet Show all documents
SikaFast®-1640

SikaFast®-1640

No-mix acrylate rear mirror adhesive kit

SikaFast®-1640 is a toughened and impact resistant no-mix acrylate based on 2-components. It is suitable to bond glass, ceramic, metal and a combination of these materials. SikaFast®-1640 Gel must be used in combination with SikaFast®-1640 Activator.  

  • Ideal to bond rear mirror brackets to windscreens
  • 100 % reactive substance, no solvents
  • Very fast curing to handling strength
 
Product Data Sheet Show all documents

PRODUCT BENEFITS

  • Ideal to bond rear mirror brackets to windscreens
  • 100 % reactive substance, no solvents
  • Very fast curing to handling strength
 

Usage

SikaFast®-1640 is ideally suited to bond rear mirror brackets to vehicle windscreens. It is suitable to bond glass, ceramics and metals as well as combinations of these materials. It may also be used for magnetic materials (ferrites). This product is suitable for experienced professional users only. Test with actual substrates and conditions have to be performed to ensure adhesion and material compatibility.  

Packaging

SikaFast®-1640 Gel

Squeeze Bottle

50 g

SikaFast®-1640 Activator

Bottle

10 ml

 

Product Details

Typical Product Data
Properties

SikaFast®-1640 Gel

SikaFast®-1640 Activator

Chemical base

Modified urethane-acrylate

Monomeric methacrylate

Color (CQP001-1)

 

Color mixed

Light yellow

Light green

Light yellow

Cure mechanism

Polymerization

Density

1.08 kg/l

1.08 kg/l

Consistency

Thixotropic gel

Liquid

Application temperature

5 ─ 35 °C

Handling time

20 seconds A

Curing time

80 % of final strength

12 hours A

Shore D hardness (CQP023-1 / ISO 48-4)

65 ─ 70

Tensile lap-shear strength (CQP046-6 / ISO 4587)

18 MPa

Service temperature (CQP513-1)

-55 ─ 120 °C

Shelf life

12 months B

CQP = Corporate Quality Procedure

A) 23 °C / 50 % r. h.

B) Stored at temperature below 25 °C and not exposed to direct sun light
Technical Information

CURE MECHANISM

SikaFast®-1640 is a no-mix acrylate system that cures by radical chain polymerization when SikaFast®-1640 Gel and SikaFast®-1640 Activator are brought into contact.

CHEMICAL RESISTANCE

In the view of potential chemical or thermal exposure, it is required to conduct a project related testing.

Application

Application Information

Surface preparation

Surfaces must be clean, dry and free from grease, oil and dust. Remove all loose particles or residues by cleaning it thoroughly, for example with an IPA wipe.
Due to the diversity of materials, preliminary tests with original substrates are necessary.

Application

Mark the area where the adhesive has to be applied for correct alignment. Apply plenty of the SikaFast®-1640 Activator with the brush which is part of the closure of the bottle to one of the bonding surfaces. On glass to metal applications, the SikaFast®-1640 Activator is applied on the glass side.

The SikaFast®-1640 Activator is free of solvents and must be liquid when joining the two parts. It therefore must not dry off.

Apply a thin layer of the SikaFast®-1640 Gel onto the other substrate.

Join the part with the activated glass surface and hold with light pressure for about 20 seconds. Excess adhesive must be removed immediately (latest within 40 seconds from joining) with a clean cloth.

The adhesive reaches about 50 % of the final strength after 15 to 20 minutes.

 

Optimum temperature for the bonding process is between 15 °C and 25 °C. The influence of the reactivity by temperature changes has to be respected.

Avoid bonding on glass surfaces that were exposed to direct sun light (hot surface). Due to the limited gap filling capability of SikaFast®-1640 the bond faces must have compatible contours. The bonded area must not exceed 10 cm², due to higher risk of stress-cracking.

Removal

Uncured excess of SikaFast®-1640 can be removed easily before curing with a dry wipe, with Sika® Remover-208 or another suitable solvent. Once the adhesive is cured it can only be removed mechanically.
Hands and exposed skin shall be washed immediately using Sika® Cleaner-350H towels or a suitable industrial hand cleaner and water.

Do not use solvents on skin.

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