STMMA co-polymer for lost foam casting(pattern raw material)

STMMA co-polymer for lost foam casting(pattern raw material)


Negotiable Min Order Quantity Unit

Required Quantity
Place of Origin
China
Payment Terms
D/A,D/P,L/C,T/T,Western Union
Production method
Negotiable
Shipping / Lead Time
Negotiable / Negotiable
Keyword
copolymer, eps, expandable polystyrene, lfc
Category
Other Chemicals

Zhejiang Castchem New Material Co.,Ltd

Membership
PRO
Country / Year Established
China China / 2002
Business type
Manufacturer
Verified Certificate

7

Product name STMMA co-polymer for lost foam casting(pattern raw material) Certification -
Category Other Chemicals Ingredients -
Keyword copolymer , eps , expandable polystyrene , lfc Unit Size 98.0 * 57.5 * 57.5 cm
Brand name - Unit Weigh 134 kg
origin China Stock -
Supply type - HS code 3903

Product Information

 

STMMA Co-polymer resin beads expandable for lost foam casting

Copolymerization of 70%MMA and 30%styrene

 


 

SPECIFICATIONS OF STMMA FOR LOST FOAM CASTING

Chemical Dangerous Grade 9/ UN2211

American Patent:US 6770 681 B2

Product

Volatile level

Moisture

Beads size

Density Suggestion*

Suitable for castings with a min thickness of*

Additives*

Typical Applications*

Name

(by wt.)

distribution peak

STMMA-1#

≥ 7.0%

0.6%

600-900 µm

18-20g/L

6~9mm

Yes

Aluminum,copper alloy,grey iron,nodular iron,alloy steel,mild steel and stainless steel

STMMA-2#

≥ 7.0%

0.6%

450-600 µm

19-21g/L

4.5~6mm

Yes

STMMA-3A#

≥ 7.0%

0.6%

400-550 µm

20-22g/L

4.5~6mm

Yes

STMMA-3#

≥ 7.0%

0.6%

350-500 µm

21-23g/L

3.5~5mm

Yes

STMMA-4#

≥ 7.0%

0.6%

250-350 µm

23-26g/L

2.5~3.5mm

Yes

STMMA-FD special

≥ 5.5%

0.6%

900-1250 µm

17-19g/L

9~12.5mm

Yes

Aluminum alloy,grey iron

STMMA-FD1#

≥ 5.5%

0.6%

600-900 µm

18-20g/L

6~9mm

Yes

STMMA-FD2#

≥ 5.5%

0.6%

450-600 µm

19-21g/L

4.5~6mm

Yes

STMMA-FD3#

≥ 5.5%

0.6%

350-450 µm

21-23g/L

3.5~5mm

Yes

STMMA-FD4#

≥ 5.5%

0.6%

250-350 µm

23-26g/L

2.5~3.5mm

Yes

* Density suggestion is a function of utilities and expander capabilities; the above values represent optimum expansion conditions.

*The select of beads size shall be according to the min thickness of the casting wall, used to be 1/10 of it. For example, you could choose the 700 µm szie beads if the casting's thinnest wall is 7mm. If the casting needs a high precision, it can also choose the next small class.

*Contains an additive which quickly reduces the molecular weight of polystyrene at elevated temperatures. Recommended for applications in aluminum having fold defects and applications in iron having excessive lustrous carbon in castings.

*Typical Application means we have tested in this kind of metal, metals beyond that are according to be actually used.

 

B2B Trade

Price (FOB) Negotiable transportation -
MOQ Negotiable Leadtime Negotiable
Payment Options D/A,D/P,L/C,T/T,Western Union Shipping time Negotiable

Zhejiang Castchem New Material Co.,Ltd

Country / Year Established
China China / 2002
Membership
PRO
Business type
Manufacturer

7

President
Lu Guohua
Address
No.10 Weiyi Road,High-Tech Industry Zone
Product Category
Catalyst & Chemical Auxiliaries,Chemical Product Agents,Coating & Paint,Other Chemicals
Year Established
2002
No. of Total Employees
101-500
Company introduction

Castchem is an USA-Sino joint venture chemical company, It has 2 plants separately located in Hangzhou and Quzhou, I'm the Oversea Director of both plants. 

Castchem Hangzhou is a chemical manufacturer specialized in producing the lost foam casting pattern raw material STMMA co-polymer(American patent US 6770 681 B2).It has much better performance than polymers such as EPS(expandable polystyrene) or EPMMA because it is copolymerized from PS and MMA.

Lost foam casting(or evaporative-pattern casting, gasifiable patterns castings,LFC process)is particularly used for very complex casting, it is cost saving because it does not need as much machining as traditional casting. We developed the STMMA polymer series to meet all kinds of metals lost foam casting required both in ferrous and non-ferrous, to reduce such as fold defects,surface recarburization defects.Currently there are four different raw material used to foam patterns, including EPS,EPMMA,copolymer and polymer mixtures.Copolymer has been finally proved the best chemical for LFC process. 

Castchem Quzhou is our another production base for Methyl Hydrogen Silicone Fluid 202(polymethylhydrosiloxane,PMHS), CAS 63148-57-2, could be used as waterproof agent in fabric,glass,ceramics,paper,leather,metal,cement,marble and other materials.Also could be used as cross-linked agent in silicone gel,raw materials in modified silicone oil,anti yellow agent of silicone rubber,anti-sticking agent for paper etc. 

Main Markets

U.S.A U.S.A

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