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TPEE monofilament

A monofilament and masterbatch technology, which is applied in the field of TPEE monofilament, can solve the problems of inability to achieve anti-ultraviolet effect, uneven dispersion of ultraviolet absorbers, and unfavorable anti-ultraviolet effect, and achieve long-term and excellent anti-ultraviolet effect, improve Anti-ultraviolet effect, effect of solving dispersion problem

Active Publication Date: 2021-12-10
东莞市博斯蒂新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, the addition of the UV absorber through blending may lead to uneven dispersion of the UV absorber in the matrix, which is not conducive to exerting the maximum anti-ultraviolet effect; on the other hand, the added UV absorber is hydroxyphenyl Triazine UV absorbers, bisphenol A salicylate UV absorbers, 2-hydroxy-4 n-octyloxy-benzophenone, 2,4-dihydroxybenzophenone and other small molecule UV absorbers, It is easy to migrate and precipitate during use, so it cannot achieve long-term anti-ultraviolet effect
[0005] In view of this, it is necessary to develop a TPEE monofilament to improve the problems caused by the relatively poor dispersion effect of the added small molecule ultraviolet absorber and the migration and separation that will occur during use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Preparation of UV-resistant modified TPEE masterbatch:

[0031] (1) Add 2kg of 1,4-butanediol, 0.58kg of 2,4-dihydroxybenzoic acid-4-hydroxyphenyl ester and 2.27kg of dimethyl terephthalate into the reactor, and add the catalyst Magnesium acetate, feed nitrogen to exhaust the air, heat up to 185 ° C, and carry out transesterification. When the amount of methanol collected reaches 80% of the theoretical value, the transesterification is over and the prepolymer is obtained;

[0032] (2) Raise the temperature of the prepolymer to 230°C, add 5.2kg of polytetrahydrofuran ether diol and catalyst tetrabutyl titanate, turn off the nitrogen, evacuate until the pressure in the kettle drops below 100Pa, and slowly raise the temperature to 260°C for polycondensation After reacting for 2 hours, an anti-ultraviolet modified TPEE masterbatch was obtained.

[0033] Preparation of TPEE monofilament:

[0034] (1) Dry the prepared anti-ultraviolet modified TPEE masterbatch at 100°C for ...

Embodiment 2

[0037] Preparation of UV-resistant modified TPEE masterbatch:

[0038] (1) Add 2kg of 1,4-butanediol, 0.91kg of 2,4-dihydroxybenzoic acid-4-hydroxyphenyl ester and 2.39kg of dimethyl terephthalate into the reactor, and add the catalyst Magnesium acetate, feed nitrogen to exhaust the air, heat up to 185 ° C, and carry out transesterification. When the amount of methanol collected reaches 80% of the theoretical value, the transesterification is over and the prepolymer is obtained;

[0039] (2) Raise the temperature of the prepolymer to 230°C, add 5.5kg of polytetrahydrofuran ether glycol and catalyst tetrabutyl titanate, turn off the nitrogen, evacuate until the pressure in the kettle drops below 100Pa, and slowly raise the temperature to 260°C for polycondensation After reacting for 3 hours, an anti-ultraviolet modified TPEE masterbatch was obtained.

[0040] Preparation of TPEE monofilament:

[0041] (1) Dry the prepared anti-ultraviolet modified TPEE masterbatch at 100°C fo...

Embodiment 3

[0044] Preparation of UV-resistant modified TPEE masterbatch:

[0045] (1) Add 2kg of 1,4-butanediol, 0.27kg of 2,4-dihydroxybenzoic acid-4-hydroxyphenyl ester and 2.15kg of dimethyl terephthalate into the reactor, and add the catalyst Magnesium acetate, feed nitrogen to exhaust the air, heat up to 185 ° C, and carry out transesterification. When the amount of methanol collected reaches 80% of the theoretical value, the transesterification is over and the prepolymer is obtained;

[0046] (2) Raise the temperature of the prepolymer to 230°C, add 4.9kg of polytetrahydrofuran ether diol and catalyst tetrabutyl titanate, turn off the nitrogen, evacuate until the pressure in the kettle drops below 100Pa, and slowly raise the temperature to 260°C for polycondensation After reacting for 2 hours, an anti-ultraviolet modified TPEE masterbatch was obtained.

[0047] Preparation of TPEE monofilament:

[0048] (1) Dry the prepared anti-ultraviolet modified TPEE masterbatch at 100°C for ...

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Abstract

The invention belongs to the technical field of monofilaments, and particularly relates to a TPEE monofilament. A preparation method of the TPEE monofilament comprises the following steps of carrying out melt extrusion by an extruder, cooling, drafting, heat setting and rolling on dried TPEE master batch to obtain the TPEE monofilament, wherein the TPEE master batch is anti-ultraviolet modified TPEE master batch. According to the TPEE monofilament, the TPEE master batch used for preparing the TPEE monofilament is the anti-ultraviolet modified TPEE master batch, the anti-ultraviolet modified TPEE master batch is directly adopted, the anti-ultraviolet effect of the TPEE monofilament does not need to be improved by adding a micromolecular ultraviolet light absorber, the dispersion problem of the ultraviolet light absorber and the migration and precipitation problems in the long-term use process are effectively solved, and the prepared TPEE monofilament has a long-term and excellent anti-ultraviolet effect.

Description

technical field [0001] The application belongs to the field of monofilament technology, and in particular relates to a TPEE monofilament. Background technique [0002] Thermoplastic polyester elastomer (TPEE), also known as polyester rubber, is a type of linear block copolymer containing PBT (polybutylene terephthalate) polyester hard segment and aliphatic polyester or polyether soft segment things. TPEE has both the excellent elasticity of rubber and the ease of processing of thermoplastics, with adjustable hardness and design freedom. It is a new variety of thermoplastic elastomers that has attracted much attention. [0003] Polyetherester elastomers have excellent chemical stability under many different conditions, such as water mist, ozone, and outdoor atmospheric aging. Like most TPEs, it will degrade under the action of ultraviolet light, so for outdoor applications or conditions where the product is exposed to sunlight, UV protection additives should be added to the...

Claims

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Application Information

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IPC IPC(8): D01F6/84C08G63/668
CPCD01F6/84C08G63/668
Inventor 刘伟
Owner 东莞市博斯蒂新材料有限公司
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