Halogen-free flame-retardant master batch for continuous long glass fiber reinforced polypropylene and preparation method of halogen-free flame-retardant master batch

A technology of flame retardant masterbatch and polypropylene, which is applied in the field of flame retardant modification of engineering plastics, and can solve the problems that related technologies have not been reported publicly.
CN114031844AActive Publication Date: 2022-02-11ZHEJIANG XUSEN NON HALOGEN SMOKE FLAME RETARDANT CO LTD +1
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG XUSEN NON HALOGEN SMOKE FLAME RETARDANT CO LTD
Publication Date
2022-02-11

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Abstract

The invention discloses a halogen-free flame-retardant master batch for continuous long glass fiber reinforced polypropylene and a preparation method of the halogen-free flame-retardant master batch. The halogen-free flame-retardant master batch consists of a polypropylene carrier, a halogen-free flame retardant, a hyperdispersant, a lubricant, a coupling agent and an antioxidant. The polypropylene carrier is a mixture of homo-polypropylene and co-polypropylene resin. The halogen-free flame retardant comprises a low-melting-point lubricating flame-retardant auxiliary agent, and the low-melting-point lubricating flame-retardant auxiliary agent is one or a mixture of several of a phosphaphenanthrene derivative or a phosphazene derivative with the melting point lower than 170 DEG C. The halogen-free flame-retardant master batch for the continuous long glass fiber added polypropylene is extruded at the extrusion temperature of 170 DEG C-210 DEG C, and is granulated by a special long strip granulator for LFTPP under the tension action of a traction machine to obtain the halogen-free flame-retardant master batch for the continuous long glass fiber added polypropylene. The halogen-free flame-retardant master batch can improve the processing fluidity of the continuous long glass fiber reinforced polypropylene material and the uniform dispersion of powder, so that a product prepared from the continuous long glass fiber reinforced polypropylene material has better uniformity. The invention also provides a preparation method of the halogen-free flame-retardant master batch.
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Description

technical field

[0001] The invention relates to the technical field of flame-retardant modification of engineering plastics, in particular to a halogen-free flame-retardant master batch for continuous long glass fiber reinforced polypropylene and a preparation method thereof. Background technique

[0002] Polypropylene (PP) is one of the five general-purpose plastics. It is a semi-crystalline thermoplastic. It has good mechanical properties and processing properties, and is cost-effective. It has been widely used in the fields of home appliances and automobiles. However, PP also has defects such as low strength, modulus, and hardness, poor low-temperature impact resistance, large molding shrinkage, easy aging, and flammability. In actual production applications, it is often necessary to toughen, fill, and flame-retardant And other modifications to meet the high performance requirements of the product.

[0003] Long Glass Fiber Reinforced Polypropylene (LGFPP for short) is o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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