Fujian Wynca Technology Co., Ltd.
Phone:0571-85451302
Fax: (+86)0571-85453201
Mobile: 13588024400
Email: info@tzxinan.com
Address: JIAOYANG INDUSTRIAL ZONE,SHANGHANG COUNTY,LONGYAN CITY,FUJIAN PROVINCE
General principles for the selection of flame retardants
◆An effective flame retardant should be able to physically or chemically affect one or several stages in the combustion process of the substance, delay the combustion of the substance and finally extinguish the combustion. For different stages of the combustion process, the applicable flame retardant may be different.
◆In the heating stage (that is, the first stage) of the combustion process, the flame retardant that can form a non-flammable coating layer around the flame retardant is effective. Flame retardants that can form an expanded coating layer when exposed to heat are also suitable for flame retardancy at this stage.
◆In the second stage of the combustion process, that is, the thermal degradation stage of combustibles, effective flame retardants can change the thermal oxidative degradation mode of combustibles through chemical means, reduce the concentration of combustible gas, or promote char formation, dehydrogenation and dehydration.
◆In the third stage of the combustion process, that is, when the gas generated by the decomposition of combustibles is ignited, any factor that increases the concentration of inflammable decomposition products and reduces the concentration of combustible decomposition products can produce flame retardant effects at this stage. In addition, if the flame retardant itself decomposes, or they can interact with the flame-retardant substrate to generate a gaseous free radical trapping agent, the burning rate can also be reduced.
◆After the combustible is ignited, it can reduce the heat transfer rate to the surface of the combustible, and the flame retardant that can relatively reduce the generation rate of free radicals that support combustion is also beneficial to slow the combustion process.
Performance comparison of three major series of flame retardants
Organic halogen | Organic Phosphorus | Inorganic Department | |
Representative products | Decabromodiphenyl ether, tetrabromobisphenol A | TCPP, BDP | Aluminum hydroxide, magnesium hydroxide |
Flame retardant efficiency | Highest | high | Low |
Environmental protection | Emit toxic and corrosive gas | Low toxicity, low corrosion, good smoke suppression effect | Low toxicity, low corrosion, good smoke suppression effect |
compatibility | it is good | it is good | Difference |
Main disadvantage | Large combustion smoke and release of toxic and corrosive gas | High volatility, poor thermal stability | A large amount of addition affects the physical and mechanical properties of the material |
Advantageous application areas | General plastics, engineering plastics, etc. | Polyurethane, engineering plastics | General plastic, rubber |
price | fair price | fair price | Lower |
Major manufacturers of flame retardants
Major foreign manufacturers
Brominated flame retardant manufacturer
factory | type | Main application areas |
Albemarle(Albemarle)company | 17 | ABS, HIPS, PA, TPE, PC, PP, PE, PVC, EPR, PFR, SI, EPDM, SAN, PO |
Great Lakes(Great Lake)company | 31 | ABS, HIPS, PA, TPE, PC, PP, PE, PVC, EPR, EPDM, SAN, PUF, PBT |
Dead Sea Bromine, Israel | 20 | EPS, textiles, adhesives, coatings, ABS, HIPS, EPR, PFR, PC, UP, PUF, PBT, PET, PS |
Japan Tosoh Corporation | 11 | PS, ABS, PO, PP, PBT, PC, PA, EP, PVC, EPDM, PFR, PUF, EPR |
American Ferro Corporation | 2 | PBT, PET, PA, HIPS |
Organic phosphorus flame retardant
factory | type | Main application areas |
Akzo Nobel, USA | 27 | FPUF, EPR, PFR, UP, PMMA, PVC, CE, PPO, PC |
Great Lakes(Great Lake)company | 5 | EPS, UP, PUF, PP, YPE, PO, coatings, adhesives, textiles |
American FMC Corporation | 15 | PVC, PUR, CE, PPO, PC/ABS, PET, NBR, SBR, PBT |
American Albright-Wilson (Albright& Wilson)) | 7 | PVC, PA, EPR, PE, PP, PS, PMMA, PUF, TPE, TPU, EVA |
Antimony flame retardant
factory | type | Main application areas |
American PQ Company | 7 | Textiles, non-woven fabrics, binders, fibers, EPR, ABS, HIPS, PP |
American Amspec Company | 7 | Natural, synthetic and textile fabrics, and halogen-based flame retardants used in resins, coatings, adhesives, foam plastics and elastomers |
Laurel Corporation | 3 | PE, PP, PS, ABS, PVC, EPDM, PU, EPR |
American Atochem North America Company | 1 | Used in conjunction with halogen-based flame retardants |
American M& T company | 5 | PE, PBT, EPDM, PVC, HIPS, ABS, PA, EPR, UP, PC, PET |
German Clariant Company | 1 | PA |
Other inorganic flame retardants
factory | Types of | type | Main application areas |
American Borax Company | Zinc borate | 5 | TPE, PA, PE, PP, UP, PVC, EPR, PEK, fluoropolymer |
American Alcoa Company, American Albemarle Company | Aluminum series | 5 | PP, PVC, EPDM, UP, EPR, PA, PBT |
American Martin Marietta Company, American Albemarle Company | Magnesium | 3 | PP, PS, PVC, PPO, EPDM, textile coating |
Sherwin Williams, USA | Molybdenum series and molybdenum-silicon series | 8 | PVC |
Japan Tosoh Corporation | Graphite, graphite-red phosphorus | 9 | PUF, PS, ABS, EPS, PO, PP, PBT, PET, PC, PA, EPR, PVC, EPDM |
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