DBDPE for Polypropylene

Under the trend of upgrading polypropylene (PP) materials towards lightweight, high toughness, and high flame retardancy, traditional flame retardants have pain points such as poor compatibility, significant loss of mechanical properties, and narrow processing windows. Our targeted research and development of DBDPE for polypropylene, through targeted surface modification technology and synergistic system optimization, perfectly matches the molecular structure and processing characteristics of PP, achieving UL 94 V-0 flame retardancy while maximizing the rigidity and toughness of the substrate, and completely free of polybrominated diphenyl ether (PBDE) structure, no carcinogenic dioxin release during thermal decomposition, and other global stringent standards. It provides a triple guarantee of "high performance, high compliance, and low cost" for PP products such as automotive parts, electronic casings, and building materials pipes.

Core strengths

1. Targeted modified design, extremely compatible with PP substrate

-Using PP-g-MAH graft coating modification process, polar functional groups matched with polypropylene molecular chains were constructed on the surface of DBDPE particles, improving interfacial compatibility by 60% and solving the problems of uneven dispersion, aggregation and whitening of traditional DBDPE in PP.

-The particle size is precisely controlled within 1.8-2.2 μ m, tightly integrated with the PP matrix, and there is no precipitation or migration during the processing. The surface smoothness of the product can reach mirror level, especially suitable for scenes with strict appearance requirements such as household appliance shells and automotive interior parts.

-Without the need for additional dispersants, it can be directly blended with PP resin for processing, without changing the existing production line parameters, significantly reducing the cost of enterprise transformation.

2. Low addition, high flame retardancy, and minimal loss of mechanical properties

-Bromine content ≥ 83%, combined with 3% -4% antimony trioxide synergist, the total addition amount only needs * * 15% -20% * * to achieve UL 94 V-0 flame retardant standard for 1.6mm thick PP products, with a limit oxygen index (LOI) ≥ 32%, far lower than the addition ratio of traditional flame retardants.

-The impact on the mechanical properties of PP substrate is extremely low, with a tensile strength retention rate of ≥ 95%, an impact toughness retention rate of ≥ 93%, and a decrease in bending modulus of ≤ 5%. It fully meets the dual requirements of structural components for strength and toughness, avoiding the industry pain point of "flame retardant compliance and performance decline".

-The thermal stability is precisely matched with the processing temperature of PP, with a 1% thermal weight loss temperature of ≥ 330 ℃ and a processing temperature window width of 180-230 ℃. It is suitable for various processes such as extrusion, injection molding, blow molding, etc. High temperature processing has no decomposition, yellowing, or gas release.

3. Safety compliance, green environmental protection

- The toxicity of combustion smoke meets the EU EN 13501-1:2024 low smoke toxicity standard, and the smoke density level (SDR) is ≤ 45.

-Fully certified by the EU REACH regulation's 250 SVHC list, RoHS 2.0 directive, US TSCA compliance assessment, and California Prop 65 safety standard, it is not included in the Stockholm Convention's POPs control list and can be directly applied to sensitive scenarios such as children's toys and food contact grade PP products.

-The Bioaccumulation Factor (BCF) is ≤ 500, and discarded PP products can be recycled through chemical or mechanical recycling processes without harmful substance residues, helping customers obtain green supply chain certification for their products.

Application scenarios

PP components in the automotive industry

-Applications: Automotive bumpers, dashboard frames, door panel interior parts, battery casings

-Advantages: Low additive content ensures lightweight design, high compatibility ensures no warping or deformation of products, passes VOC and ELV testing standards in the automotive industry, and flame retardant performance meets FMVSS 302 requirements for automotive interior parts

-Recommended formula: PP resin 77%+specialized DBDPE 18%+antimony trioxide 5%

Electronic and electrical PP shell

-Application: 5G base station signal amplifier housing, home appliance housing, power adapter housing, junction box

-Advantages: The surface of the product is smooth and free of blemishes, and its flame retardant performance has passed UL 94 V-0 certification. It has excellent weather resistance and long-term use without yellowing or the precipitation of flame retardants

-Recommended formula: high impact PP 75%+specialized DBDPE 20%+antimony trioxide 5%

Building materials PP pipes/sheets

-Application: PP-R water supply pipe, flame-retardant PP building template, ventilation duct, cable tray

-Advantages: High rigidity ensures the pressure resistance of the pipe material, flame retardant grade meets the requirements of GB 8624-2012 B1 level, acid and alkali corrosion resistance, and is suitable for long-term use in construction projects

-Recommended formula: homopolymer PP 76%+specialized DBDPE 19%+antimony trioxide 5%

Daily and industrial PP products

-Application: Flame retardant turnover box, child safety seat frame, industrial protective fence

-Advantages: High toughness and impact resistance, no toxic substance release, in line with daily plastic product safety standards, high processing efficiency, suitable for large-scale production

-Recommended formula: 78% copolymer PP+17% specialized DBDPE+5% antimony trioxide