PVC Additive

Dandong Decheng Chemical Co., Ltd.

Acrylic Impact Modifier > Acrylic Impact Modifier

Model No.:	DM335, DM-50
Product Origin:	China
Brand Name:	Decheng
Other Price Terms:	FOB, CIF, CFR
Payment Terms:	L/C at sight, T/T in advance
Supply Ability:	500MT/year
Minimum Order:	1 x 20' FCL (15MT)
Delivery Lead Time:	n/a
Certification(s):	n/a

Detailed Product Description

	ACR DM-335 is a new high performance acrylic PVC impact modifier developed 
by the &D center of our company in 2003. This new generation weather-
resistant impact modifier, which has a structure of butyl acrylate core and 
methyl methacrylate shell, is the graft copolymer of the two monomers. With 
the strictly controlled particle size, Tg of the core, and the coordination of a 
third component in the shell, DM-335 is produced to effectively improve the 
impact resistance and weatherability of PVC. 

DM-335 is developed not only to enhance product performances, but also to 
overcome the disadvantage which our former impact modifier DM-235 and 
DM-236 bring to the fabrication process of PVC. Although certain intrinsic 
property of DM-235 and DM-236 as a processing aid has adequately utilized 
the properties of ACR impact modifier and simplified the blending procedure of 
end users, such as 7 parts in the formulation affords approximately the same 
process ability as 9 parts of CPE and 2 parts of ACR DP-401 do, it restricts the
adjustment of the formulations. 

DM-335 is designed to decrease extra process ability and thus facilitates the
formulation design, because end users could adjust the amount of ACR 
processing aid to achieve the satisfying process ability when DM-335 is adopted 
to replace CPE or MBS. The main benefits DM-335 brings to PVC products are 
high weatherability, high impact resistance, and fine process ability, together 
with good surface gloss, high weld strength and low temperature retraction.

Formulation:
1) PVC S-1000: 100%
2) Calcium stearate: 1.0%
3) Lead stearate: 1.8%
4) Dibasic lead phosphite: 3.5%
5) Calcium carbonate: 20%
6) Titanium dioxide: 4.0%
7) Stearic acid: 0.2%
8) PE wax: 0.1%
9) Processing aid: DP-401: 1.0%
10) Impact modifier: 6.0%

Laboratory equipment: 
1) RM-200 torque rheometer 
2) XLB-D curing press
3) 5L homomixer
4) Universal sampling machine
5) Color difference meter
6) XSK-160B two roller mill
7) Electronic universal sampling machine
8) Impact testing machine with simple beam

Testing method: 
PVC compounds of the formulation ratio were dry-blended in a homomixer and
were discharged for cooling when the blending temperature reached 120°C. 
The resulting composite was further dry-blended with given amounts of 
processing aids to afford a series of blends, of which the processing rheologic 
property and mechanical property were tested.

All the composites and blends were respectively melt-blended in a two-roller 
mill at 180°C for 3 minutes to give sheets, which were compression-molded 
at 180°C and 15MPa for 3 minutes on a curing press to form test pieces. The 
tensile strength of the test pieces were evaluated according to GB/T1040. The 
notched-bar impact testing was performed on impact testing machine with 
simple beam at 15°C and stretch test was performed on electronic universal 
stretch tester at 15°C

Outer packing: 
25kg/PP woven bag with PE inner liner or according to customers' demands

More Products from this Supplier

Acrylic Impact Modifier

PVC Processing Aids

PVC Foaming Regulator

PVC Additive

Contact Information

Company Name:	Dandong Decheng Chemical Co., Ltd.
Contact Person:	n/a
Address:	Qianyang Economic Development Zone, Donggang, Liaoning, China
Zip:	n/a
Telephone:	n/a
Mobile Phone:	n/a
Fax:	n/a
Website:	n/a