Antibacterial, mildew-proof, antistatic and yellowing-resistant TPU

A anti-yellowing and anti-static technology applied to TPU. It can solve the problems of reducing the service life of TPU and affecting the yellowing resistance of TPU

Inactive Publication Date: 2020-06-19
东莞市米儿塑胶原料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, antibacterial agents are mainly divided into three categories: inorganic, organic and natural. Among them, inorganic antibacterial agents have the best effect and the longest duration. They are ideal antibacterial agents. Inorganic antibacterial agents such as silver, copper, tin, oxidation If zinc is directly added to TPU, it will affect the yellowing resistance of TPU, thereby reducing the service life of TPU. Therefore, a kind of TPU that can grow antibacterial and has anti-yellowing properties is urgently needed at present.

Method used

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  • Antibacterial, mildew-proof, antistatic and yellowing-resistant TPU

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Step 1: by weight component, get 72 parts of PTMEG type polyether type glycols, 1 part of cetyltrimethylammonium chloride, 0.6 part of nanometer zinc oxide, then the cetyltrimethylammonium of formula quantity Put both ammonium chloride and nano-zinc oxide into PTMEG type polyether glycol, stir and mix, and let it stand for at least 12 hours to fully infiltrate cetyltrimethylammonium chloride and nano-zinc oxide.

[0033] Step 2: Take 4 parts of 1,4-butanediol and 0.4 parts of ethylenediamine and put them into the product obtained in step 1, and then take 20 parts of isocyanate and put them into the mixture, so that the isocyanate index is 1.

[0034] Step 3: Mix 0.5 part of antioxidant and 0.5 part of anti-UV agent with the product obtained in step 2.

[0035] Step 4: put the product obtained in step 3 into a twin-screw machine, and set the screw temperature to 150 degrees.

[0036] Step 5: Put the granules extruded in step 4 into water at 20 degrees to complete granul...

Embodiment 2

[0038] Step 1: by weight component, get 50 parts of PTMEG type polyether type glycols, 1.2 parts of cetyl trimethyl ammonium chloride, 0.8 part of nano-zinc oxide, then the cetyl trimethyl ammonium Put both ammonium chloride and nano-zinc oxide into PTMEG type polyether glycol, stir and mix, and let it stand for at least 12 hours to fully infiltrate cetyltrimethylammonium chloride and nano-zinc oxide.

[0039] Step 2: Take 9 parts of 1,4-butanediol and 1 part of ethylenediamine and put them into the product obtained in step 1, and then take 37 parts of isocyanate and put them into the mixture, so that the isocyanate index is 1.

[0040] Step 3: Mix 0.5 part of antioxidant and 0.5 part of anti-UV agent with the product obtained in step 2.

[0041] Step 4: put the product obtained in step 3 into a twin-screw machine, and set the screw temperature to 150 degrees.

[0042] Step 5: Put the granules extruded in step 4 into water at 20 degrees to complete granulation.

Embodiment 3

[0044] Step 1: by weight component, get 50 parts of PPG type polyether type glycols, 1.2 parts of cetyltrimethylammonium chloride, 0.8 part of nano-zinc oxide, then the cetyltrimethylammonium Put both ammonium chloride and nano-zinc oxide into PPG type polyether glycol, stir and mix, and let it stand for at least 12 hours to fully infiltrate cetyltrimethylammonium chloride and nano-zinc oxide.

[0045] Step 2: Take 9 parts of 1,4-butanediol and 1 part of ethylenediamine and put them into the product obtained in step 1, and then take 20 parts of isocyanate and put them into the mixture, so that the isocyanate index is 1.

[0046] Step 3: Mix 0.5 part of antioxidant and 0.5 part of anti-UV agent with the product obtained in step 2.

[0047] Step 4: put the product obtained in step 3 into a twin-screw machine, and set the screw temperature to 150 degrees.

[0048] Step 5: Put the granules extruded in step 4 into water at 20 degrees to complete granulation.

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Abstract

The invention relates to an antibacterial antistatic and yellowing-resistant TP, which is prepared from the following components in parts by weight: 45 to 70 parts of polymer polyol, 5 to 12 parts of1,4-butanediol, 0.4-1 part of ethylenediamine, 35-40 parts of isocyanate (MDI), 0.1-1.5 parts of hexadecyl trimethyl ammonium chloride, 0.1-1.0 part of nano zinc oxide, 0.5-1 part of an antioxidant and 0.5-1 part of an anti-UV agent. According to the invention, nano zinc oxide and hexadecyl trimethyl ammonium chloride are infiltrated in polymer polyol in advance, so that caking cannot be generatedduring a chain extension reaction so as not to influence the transparency and the yellowing resistance of TPU, and the TPU can be fully dispersed in colloid so as to effectively exert the antibacterial property of the TPU.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to an antibacterial, anti-mildew, anti-static, anti-yellowing TPU. Background technique [0002] In recent years, various public health and safety incidents have emerged around the world, so the requirements for medical device materials are getting higher and higher. For TPU materials used in medical devices, not only are they required to have certain antibacterial and antibacterial properties, It is also required to have a certain resistance to yellowing to ensure that it will not easily change color under long-term use and affect the use. Therefore, an anti-static and yellowing-resistant TPU is currently required [0003] At present, antibacterial agents are mainly divided into three categories: inorganic, organic and natural. Among them, inorganic antibacterial agents have the best effect and the longest duration. They are ideal antibacterial agents. Inorganic antibacterial agent...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/32C08G18/40C08G18/42C08G18/48C08K3/22C08K5/19C08K13/02
CPCC08G18/3206C08G18/3228C08G18/4018C08G18/4238C08G18/4854C08G18/6618C08G18/6685C08K3/22C08K5/19C08K13/02C08K2003/2296C08K2201/011C08K2201/017
Inventor 贺平
Owner 东莞市米儿塑胶原料有限公司
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