CHEMICAL-PHYSICAL TEST PRE-PRINTING PRODUCTS AND ADHESIVES

CHEMICAL-PHYSICAL TEST PRE-PRINTING PRODUCTS AND ADHESIVES

Physical and chemical tests are essential to ensure that the material complies with the quality standards required in the transformation process.

The checks can be performed during the acceptance phase, intermediate aging and in the requalification phase.

The quality of the finished product strongly depends on the chemical and physical characteristics of the product materials.

The following tests allow to verify the principal characteristics of interest to principal production processes.

test-prepreg
TIPOLOGIA PROVA  METODO SCOPO DELLA PROVA
Pot life sticker  

ASTM D2471

 

Working time of the adhesive
Thickness  

ASTM D3171

 

Adhesive thickness
DSC sticker  

ASTM D3418

 

Check Tg of pre-polimer and crosslinking peak
Content of constituents in prepregs  

ASTM D3529

 

Resin Content/Fiber Content/Prepreg Surface Weight
Volatile content in prepregs  

ASTM D3530

 

Volatile content
Prepreg resin flow  

ASTM D3531

 

Flowability evaluation (prepreg, adhesive)
Gel time prepreg  

ASTM D3532

 

Gelling time
Adhesive weight  

Metodo interno

 

Superficial adhesive weight
Free expansion  

Metodo interno

 

Free expansion assessment