Plastic wound cord thread compound drum and preparation method

Abstract

The invention discloses a plastic wound cord thread compound drum and a preparation method. The plastic wound cord thread compound drum comprises a drum body, wherein an anticorrosion layer, a first keel bearing structure layer, a first PPTA keel enhancing layer, a structure layer, a second keel bearing structure layer, a second PPTA keel enhancing layer and an anti-ultraviolet anticorrosion bearing layer are successively arranged on the drum body from inner to outer. The plastic wound cord thread compound drum is characterized by reasonable design, simple structure, nontoxic and environment-friendly effects, high temperature resistance, high pressure resistance, anti-ultraviolet property, anti-ageing property and capability of effectively promoting flame retardant property, anti-corrosion property and wear-resisting property.

Description

technical field [0001] The invention specifically relates to a plastic winding cord composite cylinder and a preparation method. Background technique [0002] Polypropylene is a general-purpose plastic widely used in the electrical and electronic industries. However, since polypropylene is a flammable material, flame retardants need to be added to improve its flame retardancy. However, when a large amount of flame retardant is added to polypropylene, the mechanical properties of the material are often greatly affected, especially the impact properties drop rapidly, and the impact strength is significantly reduced. The method commonly used to toughen polypropylene materials is to add an appropriate amount of thermoplastic elastomers, such as POE (polyolefin elastomer), SBS (styrene-butadiene-styrene block copolymer), EPDM (ethylene-propylene-diene rubber) ), etc., the addition of elastomers can greatly improve the toughness of thermoplastic resins, but at the same time it w...

AI Technical Summary

Problems solved by technology

In the halogen-free flame retardant technology, the flame retardant polypropylene composition is prepared by adding inorganic compounds such as aluminum hydroxide to polypropylene. Due to the excessive addition amount, accounting for more than 40% of the mixture, the result is poor processability of the composition and the products The mechanical properties of ammonium polyphosphate are reduced, which limits its use. This technology has been rarely used; in the existing technology of using ammonium polyphosphate flame retardant, some of them are due to improper selection of synergists or unreasonable ratios, resulting in the weight fraction of additives. Exceeding the weight fraction of the base material will have a major adverse effect on the physical and chemical properties of the base material, which is suspected of overwhelming the host; some pay attention to the flame retardancy and ignore the mechanical properties, resulting in a greatly reduced material toughness; when some additives are selected, there is no Pay attention to the decomposition temperature of the added ingredients. As a result, the added ingredients whose decomposition temperature is lower than the processing temperature of the base material are used, causing the added ingredients to be decomposed in advance during the processing, and the proper mechanical properties and flame retardant effects cannot be obtained, which cannot meet the requirements. Due to impact load (such as large pickling tank (tank) of stainless steel continuous rolling production line) and other special purposes, the toughness of polypropylene homopolymer (PPH) is required, especially the reduction of material toughness has a very serious impact on welding performance, so it is not suitable for welding Requirements for Formed Large Equipment

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