Flame retardant complex system and halogen-free flame-resistant resin-based composite material containing same

Abstract

The invention belongs to the technical field of flame retardance of high polymer materials, and provides a flame retardant complex system and a halogen-free flame-resistant resin-based composite material containing the same. Reasonable complexing of alkyl hypophosphite, phosphite, alkoxy organosilicon and other low corrosion flame-retardant synergists is used to ensure that the final material is free of the problem of precipitation, the appearance is not influenced, processing equipment generates no precipitation residue, and an air vent is not blocked, the corrosion problem is well improved,adverse effect on the intrinsic beneficial properties is reduced remarkably, injection temperature is normal without serious decomposition, workpieces of various sizes are suitable for injection molding, adding amount is less and cost controllability is high.

Description

technical field [0001] The invention belongs to the technical field of flame retardant polymer materials, and relates to a flame retardant compound system and a halogen-free flame retardant resin-based composite material containing the same. Background technique [0002] Polymer materials have direct or potential application prospects in many fields due to their inherent beneficial features that other materials do not possess. However, in terms of currently known or possible future application fields, it must be required to have some other additional properties that are different from the inherently beneficial features, such as flame retardancy. [0003] Take polyamide as an example. Polyamide resin, also known as nylon, was developed by DuPont and completed its initial industrial production in 1939. After just a few decades of material research and development and application, it has become one of the most important industrial plastics, and these are completely benefited f...

AI Technical Summary

Problems solved by technology

For the mold, the continuous accumulation of residues will have a great impact on the production quality, and the mold needs to be cleaned from time to time, which seriously reduces the efficiency of industrial production

[0009] 2. In addition, aluminum diethylphosphinate itself is acidic (pH value is 3 to 5), and long-term use will cause corrosion to processing equipment (screw, cylinder, mold, etc.), especially the ADP-MPP system, which will Severe corrosion caused by processing equipment

[0010] 3. After MPP is added, the base material will be extremely heat-resistant during the injection molding process, and the mechanical properties will drop very seriously, and it will even fail to form.

[0014] 1. Precipitation problem: some known flame retardants will have serious precipitation during processing

[0015] 2. Corrosion problem: corrosion of equipment during processing, and corrosive gas generated during combustion

[0016] 3. The problem of strong acidity: a strong acidic environment will lead to the depolymerization of polyamide, resulting in a decrease in the strength of the material

[0017] 4. Thermal degradation problem: Higher temperature injection molding environment will cause polyamide to degrade due to reaction, resulting in serious damage to the mechanical properties of the material

[0018] 5. The problem of usage: Excessive usage will make the product cost too high and leave the actual industrial use market; cause serious weakening of the inherent beneficial properties of materials; the risk of environmental damage and resource depletion caused by flame retardant mining

However, through a large number of experimental studies, it has been found that its obvious disadvantages are poor flame retardancy, or greatly increase the final cost of the product

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