MANUFACTURERS AND EXPORTERS OF AMPEROX M 50

Storage

• Due to the relatively unstable nature of organic peroxides a loss of quality can be detected over a period of time. To minimize the loss of quality, We recommend a maximum storage temperature (T , max.) for each organic peroxide product.
• For    AMPEROX   M50         Ts max. = 25°C
• When stored under the recommended storage conditions, AMPEROX M50 will remain within our specifications for a period of at least three months after delivery.

Thermal stability

• Organic peroxides are thermally unstable substances, which may undergo self-accelerating decomposition. The lowest temperature at which self- accelerating decomposition of a substance in the original packaging may occur is the Self-Accelerating Decomposition Temperature (SADT). The SADT is determined on the basis of the Heat Accumulation Storage Test.
• For    AMPEROX    M50         SADT : 60°C
• The Heat Accumulation Storage Test is a recognized test method for the determination of the SADT of organic peroxides (see Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria - United Nations, New York and Geneva).

Major decomposition products 

• Carbon dioxide, Water, Acetic acid, Formic acid, Propanoic acid, Methyl ethyl ketone

Packaging and transport 

• The standard packaging is a 30 KG HDPE can for peroxide solution.
• In Asia Pacific the standard packaging is a 30 | HDPE can for 20 kg peroxide solution.
• Both packaging and transport meet the international regulations. For the availability of other packed quantities contact our representative.
• AMPEROX M5O is classified as Organic peroxide type D; liquid; Division 5.2; UN 3105; PG II.

Safety and handling

• Keep containers tightly closed. Store and handle AMPEROX M650 ina dry well-ventilated place away from sources of heat or ignition and direct sunlight. Never weigh out in the storage room
• Avoid contact with reducing agents (e.g. amines), acids, alkalis and heavy metal compounds (e.g. accelerators, driers and metal soaps).
• Please refer to the Material Safety Data Sheet (MSDS) for further information on the safe storage, use and handling of AMPEROX MB50. This information should be thoroughly reviewed prior to acceptance of this product.

Applications

• AMPEROX M®5QOis a general purpose methyl ethyl ketone peroxide (MEKP) for the curing of unsaturated polyester resins in the presence of a cobalt accelerator at room and elevated temperatures.
• The curing system AMPEROX M50 with cobalt : accelerator is particularly suitable for the curing of gelcoat resins, laminating resins, lacquers and castings; moreover the manufacture of light resistant parts may be possible contrary to the curing system benzoyl peroxide/amine accelerator.
• Practical experience throughout many years has proven that by the guaranteed low water content and the absence of polar compounds in AMPEROX M50, this peroxide is very suitable in GRP products for e.g. marine applications.
• For room temperature application it is necessary to use «M50 together with a cobalt accelerator (e.g Accelerator 6).

Dosing

• Depending on working conditions, the following peroxide and accelerator dosage levels are recommended:
• AMPEROX M50        1-4 phr
• Accelerator 6           0.5-3 phr

Cure Characteristics 

• In a high reactive standard orthophthalic resin in combination with Accelerator 6 (= 1% cobalt) the following application characteristics were determined:

• Gel times at 20°C

• 2 phr AMPEROX M50 + 0.5 phr,        Accelerator 6            12 minutes
• 2 phr AMPEROX M50 + 1.0 phr,          Accelerator 6             7 minutes

• Cure of 1 mm pure resin layer at 20°C

• The speed of cure is expressed as the time to reach a Persoz hardness of respectively 30, 60 and 120 s.

• Cure of 4 mm laminates at 20°C

• 4 mm laminates have been made with a 450 g/m^ glass chopped strand mat. The glass content in the laminates is 30% (w/w).

• The following parameters were determined:
• - Time-temperature curve.
• - Speed of cure expressed as the time to achieve a Barcol hardness (934-1) of 0-5 and 25-30 respectively.
• - Residual styrene content after 24 h at 20°C and a subsequent postcure of 8 h at 80°C.

20°C 80°C