High-transparency antibacterial thermoplastic polyurethane elastomer and preparation method thereof

A thermoplastic polyurethane and transparency technology, which is applied in the field of high transparency antibacterial thermoplastic polyurethane elastomer and its preparation, can solve the problems of reducing the performance and aesthetics of polyurethane elastomer, easy to grow mildew, poor antibacterial performance, etc., and achieve excellent antibacterial performance And high transparency, good plasticization processing, solve the effect of poor antibacterial performance

Inactive Publication Date: 2020-07-10
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current polyurethane elastomers have poor antibacterial properties, and the surface is prone to mildew in a humid and warm environment, which seriously reduces the performance and aesthetics of polyurethane elastomers.

Method used

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  • High-transparency antibacterial thermoplastic polyurethane elastomer and preparation method thereof
  • High-transparency antibacterial thermoplastic polyurethane elastomer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A kind of highly transparent antibacterial thermoplastic polyurethane elastomer and preparation method thereof:

[0024] 1. Raw material components

[0025] Polyether polyol 62.08%,

[0026] Diisocyanate 30.60%,

[0027] Small molecule diol chain extender 6.78%,

[0028] Nanoscale titanium dioxide powder 0.50%,

[0029] Silane coupling agent 0.01%,

[0030] Catalyst 0.01%.

[0031] 2. Preparation steps:

[0032] a Weigh 0.08g of nano-sized titanium dioxide powder, add it into a conical flask containing 10mL N,N-dimethylformamide, add an appropriate amount of silane coupling agent kh-550 dropwise, and ultrasonically disperse it evenly for 1.5h.

[0033] b Add 9.89g of PTMG-1000 into a three-necked flask equipped with a stirrer, vacuum dehydrate at 110°C for 2h, and then lower the temperature to 80°C.

[0034] c. Add the nanoparticle solution into the three-neck flask, then dropwise add 4.88g IPDI, add dropwise a catalyst, and react at a constant temperature of 90°...

Embodiment 2

[0037] A kind of highly transparent antibacterial thermoplastic polyurethane elastomer and preparation method thereof:

[0038] 1. Raw material components

[0039] Polyether polyol 61.80%,

[0040] Diisocyanate 30.50%,

[0041] Small molecule diol chain extender 6.75%,

[0042] Nanoscale titanium dioxide powder 0.94%,

[0043] Silane coupling agent 0.01%,

[0044] Catalyst 0.01%.

[0045] 2. Preparation steps:

[0046] a Weigh 0.15g of nano-sized titanium dioxide powder, add it to a conical flask containing 10mL N,N-dimethylformamide, add an appropriate amount of silane coupling agent kh-550 dropwise, and ultrasonically disperse it evenly for 1.5h.

[0047] b Add 9.89g of PTMG-1000 into a three-necked flask equipped with a stirrer, vacuum dehydrate at 110°C for 2h, and then lower the temperature to 80°C.

[0048] c. Add the nanoparticle solution into the three-neck flask, then dropwise add 4.88g IPDI, add dropwise a catalyst, and react at a constant temperature of 90° C...

Embodiment 3

[0052] A kind of highly transparent antibacterial thermoplastic polyurethane elastomer and preparation method thereof:

[0053] 1. Raw material components

[0054] Polyether polyol 76.25%,

[0055] Diisocyanate 19.08%,

[0056] Small molecule diol chain extender 5.334.30%,

[0057] Nanoscale titanium dioxide powder 0.36%,

[0058] Silane coupling agent 0.01%,

[0059] Catalyst 0.01%.

[0060] 2. Preparation steps:

[0061] a Weigh 0.08g of nano-sized titanium dioxide powder, add it to a conical flask containing 10mL N,N-dimethylformamide, add an appropriate amount of silane coupling agent kh-550 dropwise, and ultrasonically disperse it evenly for 1.5h.

[0062] b Add 16.86g of PPG-2000 into a three-necked flask equipped with a stirrer, vacuum dehydrate at 110°C for 2h, and then lower the temperature to 80°C.

[0063] c. Add the nanoparticle solution into the three-neck flask, then add 4.22g IPDI dropwise, add 1 drop of catalyst, and react at a constant temperature of 90...

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Abstract

The invention discloses a high-transparency antibacterial thermoplastic polyurethane elastomer and a preparation method thereof. The polyurethane elastomer is prepared from the following raw materials: polyether polyol, diisocyanate, a small molecular diol chain extender, nanoscale titanium dioxide powder, a silane coupling agent and a catalyst. The preparation method comprises the following steps: adding nanoscale titanium dioxide powder into N, N-dimethylformamide, and dropwise adding a silane coupling agent to obtain a nanoparticle solution; adding the nanoparticle solution into polyether polyol, dropwise adding diisocyanate, and dropwise adding a catalyst to obtain a prepolymer; and cooling the prepolymer, adding a small molecular diol chain extender, carrying out a chain extension reaction, carrying out vacuum defoaming until no bubble exists, carrying out vacuum drying, and curing in an oven to obtain the thermoplastic polyurethane elastomer with excellent performance. The polyurethane elastomer is good in plasticizing processing, wide in hardness range, excellent in antibacterial property and high in transparency and can be widely applied to the field of medical treatment and public health.

Description

technical field [0001] The invention relates to a high-transparency antibacterial thermoplastic polyurethane elastomer and a preparation method thereof, belonging to the field of medical polymer materials. Background technique [0002] Thermoplastic polyurethane elastomer is a linear high polymer synthesized by the reaction of polyisocyanate and polyether or polyester diol with hydroxyl groups in a small molecule diol chain extender. Its outstanding features are excellent wear resistance, high hardness, high strength and good elasticity, good chemical resistance and environmental resistance, and it has a wide range of applications and prospects in the biomedical field. However, the current polyurethane elastomers have poor antibacterial performance, and the surface is prone to mildew in a humid and warm environment, which seriously reduces the performance and aesthetics of polyurethane elastomers. Contents of the invention [0003] The technical problem to be solved by th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/48C08G18/32C08K9/06C08K3/22
CPCC08G18/3206C08G18/4825C08G18/4854C08G18/6674C08K3/22C08K9/06C08K2003/2241C08K2201/011
Inventor 单晓茜靳行韩宇高颖
Owner SHANGHAI INST OF TECH
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