M911

M911 belongs to the "functional masterbatch" category, with the official full name "PE Halogen-Free Flame Retardant Masterbatch M911", and its series affiliation is the functional masterbatch series. Manual table-of-contents line verbatim: "M911: PE Halogen-Free Flame Retardant Masterbatch — PE film halogen-free flame retardant, PE woven bag yarn halogen-free flame retardant (hindered amine type)"; official tagline line "PE film halogen-free flame retardant, PE woven bag yarn halogen-free flame retardant". (Data source: product handbook / official product data)

[Product Overview] verbatim: "PE halogen-free flame retardant masterbatch is compounded from hindered amine flame retardant, hindered amine light stabilizer, LLDPE resin, etc., subjected to high-efficiency dispersion processing, and pelletized. It can effectively provide flame retardancy and achieve good resistance to photo-oxidation. Mainly used in cast film, blown film, extrusion coating, drawing (yarn) and other products, with a significant effect on the fire and flame retardancy of the products." (Data source: product handbook / official product data)

This product is in finished masterbatch form: on the formulation side, "tetramethylpiperidine derivatives and other hindered amine types" serve as the core flame retardant component, compounded with hindered amine light stabilizer and LLDPE carrier resin; the official record states "M911 internally uses R911 PE halogen-free flame retardant" — the additive grade corresponding to the powder-side system is R911. (Data source: product handbook / official product data)

Thickness applicability threshold (official detail page): "only suitable for thin products within 15 si" "specifically developed for PE thin products within 15 si (0.15 mm)" — the manual body does not record this thickness boundary; the two are registered in parallel. (Data source: official product data)

• Halogen-free and eco-friendly — "contains no halogens such as chlorine or bromine, does not release toxic hydrogen halide gas when burning, has extremely low smoke output, complies with RoHS and REACH, and is suitable for sensitive scenarios such as food contact and electronic components".
• Flame retardant + photo-oxidation resistant dual effect — "can effectively provide flame retardancy and achieve good resistance to photo-oxidation"; the detail page records "flame retardant + photo-oxidation resistant dual effect, delaying PE aging".
• Film compatibility — "excellent compatibility with LDPE/LLDPE, not prone to migration, no blooming, and does not significantly affect film transparency, flexibility, hand feel, or heat-sealing performance".
• Masterbatch form — dry blending for direct processing, no powder dust; dispersion processing has already been completed at the pelletizing stage.
• Indicators can be re-tested — specific gravity 0.89 g/cm³, melt index 6.9 g/10min, accompanied by a COA test report supplied with each batch.
• Pre-use notice — "in the formulation, it is best not to use it together with flammable combustion-supporting components such as wax, ester, alumina, etc., nor with anti-dripping agents; it is not suitable for fiber reinforcement"; when it cannot be avoided, first conduct experiments to confirm compliance with product requirements before use.

Composition and process verbatim: "PE halogen-free flame retardant masterbatch is compounded from hindered amine flame retardant, hindered amine light stabilizer, LLDPE resin, etc., subjected to high-efficiency dispersion processing, and pelletized." Detail page composition statement: "tetramethylpiperidine derivatives and other hindered amine types as the core flame retardant component, compounded with hindered amine light stabilizer and LLDPE carrier resin". (Data source: product handbook / official product data)

Mechanism statement (detail page): "utilizes the core hindered amine structure to capture free radicals during combustion and interrupt the chain reaction, achieving efficient flame extinguishing and flame suppression." Data boundary: the manual's page for this grade does not elaborate the combustion mechanism and gives no LOI; the mechanism on this page follows the official detail page's wording, and does not fabricate or transplant the mechanism statement of other grades. (Data source: official product data)

Compliance statement (detail page): "contains no halogens such as chlorine or bromine, does not release toxic hydrogen halide gas when burning, has extremely low smoke output, complies with RoHS and REACH, and is suitable for sensitive scenarios such as food contact and electronic components." (Data source: official product data)

1. Free Radical Capture — Hindered Amine Core StructureDuring combustion, the hindered amine structure captures free radicals and interrupts the chain reaction, achieving flame extinguishing and flame suppression (mechanism statement from the detail page).
2. Photo-Oxidation Resistance — Compounded Hindered Amine Light StabilizerThe compounded hindered amine light stabilizer provides photo-oxidation resistance, "delaying PE aging" (dual-effect statement from the detail page).
3. Carrier and Dispersion — LLDPE PelletizingLLDPE resin serves as the carrier, "high-efficiency dispersion processing, pelletized" — dispersion is completed at the pelletizing stage, ready for direct dry-blend use by the customer.
4. Low Smoke Halogen-Free — Combustion PerformanceContains no halogens such as chlorine or bromine, does not release toxic hydrogen halide gas when burning, and has extremely low smoke output.

The items recorded in the handbook specification table and the official product data are reproduced as follows (two forms of the flame-retardant rating are listed in parallel; the values in the table are as recorded in the source materials, and small-scale verification is recommended before bulk use).

Reading notes: ① Two forms of the flame-retardant rating are listed in parallel — the handbook and the official field record "UL94V1", while the official detail page records "UL94 V1 / V-2 (film grade)"; the test specimen, thickness, testing organization and report number are all not stated in the source materials; ② The test conditions (temperature, load) for the melt index of 6.9 g/10min are not listed in the source materials; ③ No complete physical and chemical property table is attached for this grade (moisture content, melting point, decomposition temperature, etc. are not listed) — none is composed on our own; ④ The values in the table are as recorded in the source materials, and small-scale verification is recommended before bulk use. (Data source: product handbook / official product data)

Handbook specification table [Addition ratio]: 10%-25%. The denominator basis is the internal addition ratio — "for example, taking a 5% masterbatch addition: raw material 95% + masterbatch 5% = 100%". Thickness direction (official detail page): "the thinner the article (5–10 si), the more the addition ratio is recommended to be appropriately increased".

The dosage direction is "the thinner the article, the higher the ratio" (official detail page); this may be opposite to the thickness direction of certain grades in the same series, and each grade follows its own source documentation and is not to be cross-applied. Ratio determination method (general rules): try several formulations and select the best; when the sample is only enough for one trial, use the highest recommended addition; for the first trial, do not add other fillers / additives; take several sample sections for testing. Measured application points (thickness × addition amount × rating) are not provided in the source materials, and this page does not extrapolate them.

To be verified: ① Measured points (thickness × addition amount → rating) are not provided in the source materials; ② The applicable conditions for the processing temperature upper limit <250℃ and the recommended range 150–200℃ (whether they relate to article thickness or process) are not explained in the source materials; ③ The above are values as recorded in the source materials; for actual production, please conduct small-scale trials in combination with your own PE grade and process to confirm.

The official application list is "PE extrusion coating / PE film"; the official detail page gives three groups of applications, and the handbook's overview scenarios are cast film, blown film, extrusion coating and drawing — reproduced as follows.

Various PE films

Packaging film, shrink film, protective film, agricultural greenhouse film and mulch film, tent film, etc.

Ultra-thin sheets and composite films

Electronic insulating sheets, lightweight packaging sheets, cast film, extrusion-coated products, etc.

Monofilament and flat filament

Woven filament, drawn filament and other thin fiber products with relatively high requirements for flame retardancy and toughness.

Handbook overview scenarios

Cast film, blown film, extrusion coating, drawing.

Feeding method

Dry blending with PE pellets → blown film / cast film / extrusion.

Combination limits (handbook precautions, verbatim)

"In the formulation, it is best not to use it together with flammable combustion-supporting components, such as wax, esters, aluminum oxide, etc.; it also must not be used together with anti-drip agents, and is not suitable for fiber reinforcement. If such combination is unavoidable, first conduct experiments to confirm compliance with product requirements before use."

Field issues & application examples (as recorded in the source material)

Comparison logic within the functional masterbatch series: first map by substrate — PE→M911 / PETG→M915 / PA6→M918 / PP→M933; then look at the flame retardant rating and processing conditions. The comparison is as follows:

Reading notes: ① The thickness-dosage direction of each grade follows that grade's own recorded convention — this grade has "the thinner, the higher the ratio", which is the opposite direction to some grades (e.g. M933 "the thinner the thickness, the smaller the addition ratio"); the two are listed as recorded and not applied to each other; ② M922 follows a low-halogen convention and is not described jointly with this product (halogen-free); ③ The values in each row come from that grade's own recorded data and are not cross-applied; ④ Choose between the masterbatch and the additive routes as needed: when a powder-end system is required, select the corresponding flame retardant grade (the additive grade corresponding to the PE system is R911). (Data source: product handbook / official product data)

The following points come item by item from the recorded data; items not listed in the data are not drafted on our own.

The data on this page come from two types of sources and are traceable item by item:

• Product handbook: the catalogue line, specification table and general provisions of the masterbatch booklet in which this grade appears (the denominator convention for the addition ratio, the general provisions on processing temperature, the material-drying and moisture-protection clauses, and the precautions).
• Official product data: all fields of this grade (name, category, slogan, description, mechanism, application, parameters, main components, addition ratio); the functional masterbatch series entry; the official detail page copy and FAQ.

Not covered by the source material (not written on this page — to be added later)

• The halogen-free determination threshold (halogen content at ppm level) and the third-party test report number —— the data only contain the statement "contains no halogens such as chlorine and bromine".
• The relationship between the two forms of the UL94 rating: the test specimen, thickness, testing organization and report number are all absent from the data.
• The test conditions (temperature, load) for the melt index of 6.9 g/10min are not listed in the data.
• The applicable conditions for the upper processing temperature limit of <250℃ and the recommended range of 150–200℃ are not explained in the data.
• Quantitative mechanical and film performance data (tensile and impact retention; light transmittance, haze) and the oxygen index (LOI) —— not provided in the data.
• Missing items in the complete physicochemical specifications: moisture content, melting point, decomposition temperature, etc. (no specification table is attached for this grade).
• The specific grade of the "LLDPE carrier resin" and the specific chemical names and proportions of the hindered amine flame retardant and light stabilizer —— not stated in the data.
• The determination method and basis for the 15 si thickness threshold —— given on the official detail page, not stated in the body of the handbook.
• Packaging and shelf life, storage conditions —— not listed on this grade's page, and not drafted on our own.