A kind of flame-retardant antistatic thermoplastic polyurethane elastomer and its preparation method and application

A thermoplastic polyurethane, flame retardant and antistatic technology, applied in the field of polymer materials, can solve the problems of product strength reduction, high production cost, complicated process, etc., and achieve excellent flame retardancy, avoid impact, and simple and easy preparation method

Active Publication Date: 2021-09-17
MIRACLL CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the addition of a large amount of powdered flame retardant and antistatic agent greatly reduces the strength of the product; moreover, the preparation process requires secondary granulation, the process is complicated, and the production cost is high
[0006] DE 3528597 introduces a method of using conductive carbon black as a conductivity improver. One disadvantage of this method is that the amount of conductive carbon black is too large, the product is colored black and the mechanical properties are seriously reduced.

Method used

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  • A kind of flame-retardant antistatic thermoplastic polyurethane elastomer and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Step 1: Mix 10kg tricresyl phosphate (TCP), 10kg sodium dodecylbenzenesulfonate, 0.5kg tetrakis (4-hydroxy 3,5-tert-butylphenyl propionate) pentaerythritol ester and 10kg dipropylene glycol diphenyl Add the formic acid ester into the high mixer, heat and stir for 1 hour, set the high temperature of the high mixer to 80°C, and set the stirring speed to 100r / min to obtain the modified mother liquor;

[0023] Step 2: Add 1000kg of thermoplastic polyurethane elastomer (mirathane E390C4) into a double-helix conical mixer, stir for 60min, and heat to 100°C;

[0024] Step 3: Divide the modified mother liquor in step 1 into 5 times on average, and add it to the double-helix conical mixer in step 2 at an interval of 30 minutes each time. After all the modified mother liquor is added, continue to stir for 5 hours to obtain the resistance Flame antistatic thermoplastic polyurethane elastomer, the test results are shown in Table 1 below.

Embodiment 2

[0026] Step 1: 100kg tributyl phosphate (TBP), 50kg lithium trifluoromethanesulfonamide, 1kg tris (2.4-di-tert-butylphenyl) phosphite and 100kg diethylene glycol dibenzoate were added to the high In the mixer, heat and stir for 1 hour, set the heat preservation temperature of the high mixer to 80°C, and set the stirring speed to 100r / min to obtain the modified mother liquor;

[0027] Step 2: Add 1000kg of thermoplastic polyurethane elastomer (mirathane M85A1) into a double-helix conical mixer, stir for 60min, and heat to 80°C;

[0028] Step 3: Divide the modified mother liquor in step 1 on average 5 times, and add it to the double-helix conical mixer in step 2 at an interval of 30 minutes each time. After all the modified mother liquor is added, continue to stir for 5 hours to obtain a flame retardant The test results of antistatic thermoplastic polyurethane elastomer are shown in Table 1 below.

Embodiment 3

[0030] Step 1: 200kg tris(2-chloropropyl)phosphate (TCPP), 100kg2-naphthyl phosphate disodium salt, 2kg bis(3,5-di-tert-butyl-4-hydroxyphenylpropionic acid) and Add 200kg of diethylene glycol dibenzoate into the high mixer, heat and stir for 1 hour, set the temperature of the high mixer to 80°C, and set the stirring speed to 100r / min to obtain the modified mother liquor;

[0031] Step 2: Add 1000kg of thermoplastic polyurethane (mirathane E685C4) into a double-helix conical mixer, stir evenly, and heat to 120°C;

[0032] Step 3: Divide the modified mother liquor in step 1 on average 5 times, and add it to the double-helix conical mixer in step 2 at an interval of 30 minutes each time. After all the modified mother liquor is added, continue to stir for 5 hours to obtain a flame retardant The test results of antistatic thermoplastic polyurethane elastomer are shown in Table 1 below.

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Abstract

The invention belongs to the technical field of polymer materials, and in particular relates to a flame-retardant and antistatic thermoplastic polyurethane elastomer and its preparation method and application. The flame-retardant and antistatic thermoplastic polyurethane elastomer is composed of the following raw materials in parts by weight: 100 parts of thermoplastic polyurethane elastomer , 1-20 parts of flame retardant, 1-10 parts of antistatic agent, 1-20 parts of plasticizer and 0.05-0.2 part of antioxidant; the polyurethane elastomer prepared by the present invention has excellent flame retardant and antistatic properties , and its preparation method is simple and feasible.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a flame-retardant and antistatic thermoplastic polyurethane elastomer and a preparation method and application thereof. Background technique [0002] Thermoplastic polyurethane elastomer (TPU) is a type of polyurethane that can be plasticized by heating and has no or little chemical crosslinking in its chemical structure. It has high strength, high modulus, good elasticity, and excellent Wear resistance and good oil resistance, so it is widely used in various fields such as medicine, industry, agriculture, military and so on. [0003] However, without any treatment, the flame retardant effect and antistatic effect of polyurethane elastomer are poor, and its limiting oxygen index is only about 18%, so it is flammable in the air. TPU materials with flame retardants are required in the fields of wires and cables, electronic appliances, etc., which greatly limi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/04C08K13/02C08K5/42C08K5/134C08K5/521C08K5/526C08K5/523
Inventor 宋红玮陈洋战振生高玉宝王黑龙
Owner MIRACLL CHEM
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