Forming Agent WY-66 & WY-68

Posted on Wed, 25 May 2016 10:58:10 GMT

 

Performance features

increase melt strength

fast rate of plasticizing and increase output

increase VST and compressive strength


Overview 

 Rigid PVC has excellent rigidity and strength to be applied in many fields like profiles, pipes, board and fitting. However, PVC is a heat-sensitive material, processing temperature and decomposition zone are very close, resulting in narrow range of processing and easy to cause decomposition and poor plasticizing. Usually, people add acrylic processing aid to solve such problems.  Forming agent WY-66&WY-68 is a copolymer of aromatic metal salts and acrylic elastomer. They are non-traditional acrylate compound. Adding forming agent WY-66 or WY-68 into PVC resin can greatly improve plasticizing of PVC, decrease processing temperature and increase VST and rigidity of products.  


Test data


                                 table1. basic formula of rigid PVC in rheological test

                                          Item

                   phr

PVC SG-5

100

CaCO3

20

Stabilizer

4

CPE

10

HST

0.2

Eaform®WY-68

 

 

2

Eaform®WY-66

(Acrylic Acid   Processing Aids,ACR)


 Table2. comparison of plasticizing property of WY-68、WY-66 and ACR processing aid


plasticizing

WY-68

WY-66

ACR

Plasticizing time/s

127

141

184

Torque /Nm

25.8

24.2

25.3

Temperature/℃

180.4

181.7

181.6


                         


     Picture1.Rheology contrast diagram of WY-68、WY-66 and ACR processing aid
                                                

Table 2 and picture 1 show forming agents WY-66&WY-68 promotes melting of PVC resin, reduce plasticizing time, increase melt strength and improve processing rheological property. They have better processing efficiency than traditional ACR processing aid.


Usage and Dosage

same dosage as ACR processing aid used in PVC rigid productsRecommond 1-3phr


Product safety

Certified by SGS, in line with the EU Reach requirements


Packaging and Storage

Packaging: 25.0±0.2kg net packed in PP valve bag.

Storage: Storing in cool, dry place with good ventilation. 




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