How high-purity magnesium hydroxide flame retardant suppliers help aluminum-plastic panels pass V0 fireproof certification
In the fields of construction, transportation, electronic equipment, etc., fire safety has always been the core demand. Aluminum-plastic panels are widely used because of their lightness and strong weather resistance, but their flammability hazards have also attracted much attention. In order to achieve the internationally recognized V0 fireproof rating certification, choosing a high-quality high-purity magnesium hydroxide flame retardant supplier is the key. This article will deeply analyze the advantages of magnesium hydroxide flame retardants, V0 certification standards, and how to screen reliable suppliers, providing a practical guide for the industry
1. Characteristics and advantages of high-purity magnesium hydroxide flame retardants
Magnesium hydroxide (Mg(OH)₂), as an inorganic flame retardant, has gradually replaced traditional halogen flame retardants due to its environmental protection and high efficiency. High-purity magnesium hydroxide (purity ≥ 95%) is particularly outstanding in flame retardant performance
1. Flame retardant mechanism
When magnesium hydroxide decomposes under heat (340℃ - 490℃), it releases crystal water, absorbs a large amount of heat, and reduces the surface temperature of the material; at the same time, the generated magnesium oxide covering layer can isolate oxygen and inhibit the spread of combustion
2. Environmentally friendly and non-toxic
The decomposition products are water and magnesium oxide, and no toxic gas is released. It complies with EU RoHS and REACH standards and is suitable for fields with strict environmental protection requirements
3. Synergistic effect
When used in combination with flame retardants such as aluminum hydroxide and zinc borate, the addition amount can be reduced (usually 20% - 40%), while maintaining the mechanical properties of the material and avoiding strength loss
4. High temperature resistance
The decomposition temperature is high, which is suitable for engineering plastics with high processing temperatures (such as nylon and polypropylene), reducing the risk of premature decomposition during the production process
II. Core requirements for V0 fire rating certification of aluminum-plastic panels
UL94 V0 certification is a vertical combustion test standard developed by the Underwriters Laboratories (UL) of the United States, which means that the material will extinguish itself within 10 seconds after the open flame is evacuated, and there will be no molten droplets igniting the cotton wool below. The aluminum-plastic panel must pass the following tests
- Sample size: 125mm×13mm×thickness
- Burning method: vertical hanging, bottom contact with flame for 10 seconds, repeated twice
- Judgment criteria
- Single burning time ≤10 seconds
- Total burning time (5 tests) ≤50 seconds
- No molten droplet ignition phenomenon
The core layer (polyethylene or polyurethane) of the aluminum-plastic panel needs to be added with sufficient flame retardant to pass the test. Magnesium hydroxide is the first choice because of its smoke suppression and halogen-free properties
III. How to choose a high-purity magnesium hydroxide flame retardant supplier
1. Technical indicator verification
- Purity and particle size: purity ≥ 95%, particle size D50 controlled at 1 - 5μm to ensure uniform dispersion
- Surface modification: whether the supplier uses modifiers such as silane and stearic acid to improve compatibility with polymers
- Thermal stability: provide TGA (thermogravimetric analysis) report to confirm that the decomposition temperature matches the processing technology
2. Production qualifications and certifications
- Whether the factory has passed ISO 9001 quality management system certification
- Whether it has environmental protection test reports such as REACH and SGS
- Can it provide successful cases of assisting customers to pass V0 certification
3. Customized service capabilities
- Adjust the formula according to the customer's substrate (PE, PVC, etc.) to optimize flame retardant efficiency and cost
- Provide flame retardant addition ratio recommendations and processing technology guidance (such as extrusion temperature, mixing order)
4. Supply chain stability
- Is the source of raw materials stable (such as ore grade, mining area)
- Does the delivery cycle meet production needs
- Does it have the scaled production capacity to cope with large orders
IV. Successful Case: A Supplier Helped an Aluminum-Plastic Panel Enterprise Pass V0 Certification
Background: A certain aluminum-plastic panel manufacturer used a traditional flame retardant system, and the product's burning time exceeded the standard and produced a lot of smoke
Solution
- Replaced with high-purity magnesium hydroxide flame retardant (28% addition), compounded with 5% zinc borate to improve the carbonization effect
- Optimized the extrusion process and controlled the temperature at 180℃ - 210℃ to avoid material decomposition
Results
- In the combustion test, the single burning time was reduced to 4 seconds, and no molten droplets were generated
- Successfully passed the UL94 V0 certification, and the order volume increased by 30%
V. Frequently Asked Questions (FAQ)
Q1: Does magnesium hydroxide flame retardant affect the color of aluminum-plastic panels?
A: The whiteness of high-purity products is ≥95%, and it is not easy to migrate after surface modification, and there is no yellowing problem in long-term use
Q2: How long does the V0 certification cycle take?
A: It usually takes 4 from sample delivery to obtaining the certificate - 6 weeks, suppliers can assist in pre-testing to shorten the cycle
Q3: Does the addition of flame retardants increase costs?
A: The price of magnesium hydroxide is about 3-5 US dollars/kg. Reasonable compounding can reduce the total cost and increase the product premium space.
VI. Conclusion: Choose professional suppliers to build a solid safety line
Aluminum-plastic panel V0 certification is not only a market access threshold, but also a manifestation of corporate social responsibility. By selecting high-purity magnesium hydroxide flame retardant suppliers with technical strength and industry experience, companies can effectively improve the fire resistance of products and seize market opportunities. Consult high-quality suppliers now to obtain customized flame retardant solutions and add a "safety lock" to your aluminum-plastic panel