Plastic pellets and yarn

A technology of plastic pellets and yarns, applied in the directions of yarns, textiles and papermaking, can solve problems such as application limitations in the textile field, and achieve the effect of good shape fixation rate

Active Publication Date: 2022-02-25
TAIWAN TEXTILE RESEARCH INSTITUTE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, shape memory materials are mostly used in the fields of plastic moldings, films and injection molding blocks, but the application in the textile field is still limited

Method used

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  • Plastic pellets and yarn
  • Plastic pellets and yarn
  • Plastic pellets and yarn

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0023] On the other hand, in the present embodiment, the method for preparing plastic pellets includes the following steps, for example. First, the shape-memory polyurethane, polyurethane and polyurethane-based dispersant are uniformly mixed and then dried to remove moisture. In one embodiment, the temperature for drying the shape memory polyurethane, the polyurethane and the polyurethane dispersant is, for example, between 85° C. and 105° C., and the drying time is, for example, more than 8 hours. Next, the mixed and dried shape memory polyurethane, polyurethane and polyurethane dispersant are fed into a twin-screw extruder for high-speed shear kneading to obtain plastic pellets. In one embodiment, in the kneading process, the processing temperature is, for example, between 185° C. and 220° C., and the screw speed is, for example, between 50 rpm and 400 rpm.

[0024] It is worth noting that, in this embodiment, the plastic particles include shape memory polyurethane, polyure...

Embodiment 1

[0036] Preparation of plastic pellets

[0037] First, 93 parts by weight of shape-memory polyurethane, 5 parts by weight of polyurethane and 2 parts by weight of polyurethane-type dispersant were evenly mixed, and then dried at 85° C. for 8 hours to remove moisture and prevent generation of air bubbles. Next, feed the above-mentioned mixed and dried shape memory polyurethane, polyurethane and polyurethane dispersant into a twin-screw extruder, and perform high-speed shear kneading at a processing temperature of 200°C and a screw speed of 200rpm , to prepare the plastic particles of Example 1.

[0038] yarn preparation

[0039] First, the plastic pellets of Example 1 were dried at 105° C. for 8 hours to remove moisture. Next, the dried plastic particles of Example 1 were melt-spun under the conditions of a melt-spinning temperature of 200° C. and a take-up speed of 200 m / min to obtain the yarn of Example 1.

Embodiment 2

[0041] Preparation of plastic pellets

[0042] First, 88 parts by weight of shape-memory polyurethane, 10 parts by weight of polyurethane and 2 parts by weight of polyurethane-type dispersant were uniformly mixed, and then dried at 85° C. for 8 hours to remove moisture and prevent generation of air bubbles. Next, feed the above-mentioned mixed and dried shape memory polyurethane, polyurethane and polyurethane dispersant into a twin-screw extruder, and perform high-speed shear kneading at a processing temperature of 200°C and a screw speed of 200rpm , to prepare the plastic particles of Example 2.

[0043] yarn preparation

[0044] First, the plastic pellets of Example 2 were dried at 105° C. for 8 hours to remove moisture. Next, the dried plastic pellets of Example 2 were melt-spun under the conditions of a melt-spinning temperature of 200° C. and a take-up speed of 200 m / min, so as to prepare the yarn of Example 2.

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Abstract

The invention provides a plastic particle and a yarn, the plastic particle includes shape-memory polyurethane, polyurethane and a polyurethane-type dispersant, wherein the shape-memory polyurethane is formed by the following steps: polymerizing a diisocyanate and a polyol to form a polymer, and The polymer is polymerized with a chain extender to form shape memory polyurethane. The yarn is made of the plastic pellets. The plastic particles and yarns have shape memory properties, and have good shape fixation rate, shape recovery rate, textile processability and textile applicability.

Description

technical field [0001] The invention relates to a plastic particle and a yarn, in particular to a plastic particle and a yarn with shape memory properties. Background technique [0002] A shape memory material is a material that has an initial shape that can be deformed when it receives external energy, and can remain in the deformed shape even if the external energy is removed, until the same external energy is applied again, A material that returns to its original shape. At present, shape memory materials are mostly used in the fields of plastic moldings, films, and injection molding blocks, but the application in the textile field is still limited. Contents of the invention [0003] In view of this, the present invention provides a plastic particle and yarn, which have shape memory properties, and have good shape fixation rate, shape recovery rate, textile processability and textile applicability. [0004] The plastic particles of the present invention include shape-m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/08C08J3/12C08G18/10C08G18/66C08G18/48C08G18/32D02G3/02
Inventor 江若诚张胜善宋忆青梁乃允
Owner TAIWAN TEXTILE RESEARCH INSTITUTE
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