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Thermoplastic polyurethane capable of carrying out optical transmission, and preparation method thereof

A technology of thermoplastic polyurethane and light transmission, applied in the field of thermoplastic polyurethane materials, can solve the problems of poor effect, large light loss, insufficient flexibility, etc., and achieve the effect of excellent light transmission ability

Pending Publication Date: 2020-02-28
ZHEJIANG HUAFENG THERMOPLASTIC POLYURETHANE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Transparent plastics used for light transmission include: polymethyl methacrylate, polystyrene, polycarbonate, etc. However, most of the above-mentioned plastics are brittle plastics, and the products are not flexible enough. At present, TPU elastomers are also used as light transmission materials. The light transmission products made of high-quality materials have good flexibility, high strength, and good elasticity, but they face problems such as poor light transmission effect and large light loss during transmission.

Method used

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  • Thermoplastic polyurethane capable of carrying out optical transmission, and preparation method thereof
  • Thermoplastic polyurethane capable of carrying out optical transmission, and preparation method thereof
  • Thermoplastic polyurethane capable of carrying out optical transmission, and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0039] TPU capable of optical transmission is obtained from raw materials with the following mass fractions:

[0040]

[0041] in,

[0042] The number average molecular weight of polybutylene adipate diol is 750;

[0043] The particle size of antioxidant 1010 is about 400um;

[0044] The catalyst is tin isooctanoate, and the consumption is 0.05% of the total mass of the above-mentioned raw materials.

Embodiment 2

[0046] TPU capable of optical transmission is obtained from raw materials with the following mass fractions:

[0047]

[0048] in,

[0049] The number average molecular weight of polyethylene adipate diol is 1000;

[0050] The particle size of antioxidant 1010 is about 1000um;

[0051] The catalyst is tin isooctanoate, and the consumption is 0.05% of the total mass of the above-mentioned raw materials.

Embodiment 3

[0053] TPU capable of optical transmission is obtained from raw materials with the following mass fractions:

[0054]

[0055] in,

[0056] The number average molecular weight of polyethylene adipate diol is 1000;

[0057] The particle size of antioxidant 1010 is about 1000um;

[0058] The catalyst is tin isooctanoate, and the dosage is 0.01% of the total mass of the above-mentioned raw materials.

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Abstract

The invention discloses thermoplastic polyurethane capable of carrying out optical transmission, and a preparation method thereof, wherein the thermoplastic polyurethane is prepared from the followingraw materials by mass: 30-45% of polyisocyanate, 44-63% of polyester polyol and 4-11% of a chain extender. According to the invention, through the synergetic cooperation of various raw materials andthe molecular weight of the used polyester polyol, the particles having a diameter of less than 3000 [mu]m are introduced into TPU in a preferred embodiment, so that the results accidentally show thatthe haze, the yellowness index, the crystallization temperature, the melt volume flow rate and the like of the prepared TPU are all within the range, and the TPU has excellent light transmission capacity, can achieve long-distance light transmission, and can be prepared into light guide materials including light guide fibers or light guide films.

Description

technical field [0001] The invention relates to a thermoplastic polyurethane (TPU) material, in particular to a TPU material capable of light transmission. Background technique [0002] Plastic is an optically dense medium material. When the light is shot from the plastic (optical dense medium) to air or other optically sparse medium, it is reflected at the interface to the optically dense medium. When the light passes through the optical fiber, it is repeatedly reflected to achieve forward delivery. Light transmission and light guide materials made of plastic can not only transmit light in a curved state, but also have the advantages of good controllability, easy processing, convenient use, and low price. Transparent plastics used for light transmission include: polymethyl methacrylate, polystyrene, polycarbonate, etc. However, most of the above-mentioned plastics are brittle plastics, and the products are not flexible enough. At present, TPU elastomers are also used as li...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/42C08G18/32C08K5/134C08K5/3435C08L75/06
CPCC08G18/3206C08G18/4238C08G18/664C08K5/1345C08K5/3435C08L75/06C08L2203/12C08L2203/16C08L2203/18
Inventor 陈天培陈斌李俊江袁仁能施龙敏陈光静范东风马肥夏东
Owner ZHEJIANG HUAFENG THERMOPLASTIC POLYURETHANE
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