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Sheath-core composite fiber with high melt index and preparation method and production equipment of fiber rod of sheath-core composite fiber

A high melt index, composite fiber technology, applied in fiber processing, fiber chemical characteristics, rayon manufacturing, etc., can solve the problems of uneven capillary structure, poor capillary water absorption effect, low production efficiency, etc., to ensure the capillary water absorption effect , high melt index, and the effect of ensuring water absorption performance

Active Publication Date: 2021-08-31
广东鑫球新材料科技有限公司
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Problems solved by technology

[0004] However, the above skin-core composite fibers still have the problems of high melting temperature required in the process of preparing fiber rods and uneven internal capillary structure after curing, which not only leads to low production efficiency, but also leads to poor capillary water absorption. Therefore, On the basis of the above-mentioned prior art, it is urgent to improve a skin-core composite fiber with high preparation efficiency and good capillary water absorption effect.

Method used

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  • Sheath-core composite fiber with high melt index and preparation method and production equipment of fiber rod of sheath-core composite fiber
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  • Sheath-core composite fiber with high melt index and preparation method and production equipment of fiber rod of sheath-core composite fiber

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Embodiment Construction

[0040] The invention provides a sheath-core composite fiber with a high melt index, including a skin layer and a core layer arranged from outside to inside, the skin layer is made of PE material and PP cooling masterbatch, and the PP cooling masterbatch accounts for 10% of the skin layer, the core layer is made of PP material, and the melting point of the skin layer is lower than the melting point of the core layer.

[0041] Among them, PP cooling masterbatches with different peroxide contents are mixed with PE materials in different proportions to obtain a mixture, and its melt index is measured. As shown in Table 1, with the increase of the content of PP cooling masterbatch, the melting index of the mixture shows obvious When the cooling masterbatch content is less, 2.5% and 2% have little difference in improving the fluidity of PE materials, but when the cooling masterbatch content exceeds 10%, 2.5% has made the PE material melt index Therefore, preferably, the peroxide con...

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Abstract

The invention provides sheath-core composite fiber with a high melt index and preparation method and production equipment of a fiber rod of the sheath-core composite fiber. The fiber comprises a sheath layer and a core layer which are arranged from outside to inside; the sheath layer is prepared from a PE material and PP cooling master batch; the PP cooling master batch accounts for 10% of the sheath layer; the core layer is prepared from a PP material; and the melting point of the sheath layer is lower than that of the core layer. According to the invention, the sheath layer is prepared from the PE material and the PP cooling master batch, and the PP cooling master batch has the characteristics of reducing the extrusion temperature (namely reducing the melting point temperature) and improving the melt index of resin, so that the temperature difference between the sheath layer and the core layer is increased, and when the fiber rod is prepared, the hot melting efficiency of the sheath layer at the same temperature is higher than the hot melting efficiency of the sheath layer without the PP cooling master batch in the prior art; and meanwhile, due to the increase of the melt index, the molten sheath layer quickly flows, so that the uniformity of the internal capillary organization structure after setting and curing is ensured, and the capillary water absorption effect of the fiber rod is ensured.

Description

technical field [0001] The invention relates to the technical field of composite fiber production and preparation, in particular to a preparation method of a skin-core composite fiber with a high melt index and a fiber rod thereof. Background technique [0002] Composite fiber is to input two or more fiber-forming polymer melts or solutions into the same spinning assembly at the same time according to the different components, proportions, viscosities or varieties, and then in the appropriate part of the assembly. Converge, and form fibers by spraying from the same spinning hole, so that it can be realized-multiple aggregates exist on an infinitely long fiber at the same time, and this fiber is called a composite fiber. Composite fibers can be divided into double-layer type and multi-layer type according to the cross-sectional shape. Pattern type, Mosaic type, Multi-sea island type, Nebula type, etc. Among them, the two-component composite fiber is also called a conjugated...

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Application Information

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IPC IPC(8): D01F8/06D01F1/10D01D5/34D04H1/541D04H1/76
CPCD01F8/06D01F1/10D01D5/34D04H1/5412D04H1/76
Inventor 邱籼钧
Owner 广东鑫球新材料科技有限公司
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