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Flame-retardant TPU film and preparation technology thereof

A technology of flame retardant and flame retardant filler, applied in the field of TPU film, can solve the problems of poor heat resistance, harm to human health, easy combustion of TPU film, etc. Effect

Active Publication Date: 2018-12-21
安徽嘉明新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the heat resistance of the TPU film on the market is poor. Once the ambient temperature is too high, the TPU film is easy to burn. For some high-temperature fields, the TPU film is not suitable and may even cause safety accidents.
At present, the processing method of flame retardant film will not only lead to the phenomenon of residual solvent in the product, but also cause environmental pollution and endanger human health during the production process. The diluent used cannot be completely eliminated, which may easily cause safety hazards

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Preparation of flame retardant: Add deionized water dropwise to 48g polyaspartic acid, stir while adding dropwise until completely dissolved, heat to reflux state and keep stirring for 5min, then add 45g p-hydroxystyrene and 2g diphenylchrome , continue to reflux and stir for 1h, then add 5g of hydroxy silicone oil, and reflux and stir again for 0.5h. The resulting mixture is naturally cooled to room temperature and then sent to a spray dryer. Acid / P-Hydroxystyrene.

[0029] The heat stabilizer is a mixture of dibasic lead stearate and p-phenylenediamine with a mass ratio of 1:1.5.

[0030] Preparation of flame retardant TPU film:

[0031] (1) Add 10g flame retardant, 5g talcum powder, 5g heat stabilizer, and 5g aluminum hydroxide into a twin-screw extruder for blending, extrusion, cooling, and pelletizing to obtain premixed particles; wherein the twin-screw extruder The rotating speed of the extruder is 100r / min, the temperature of the barrel and the extrusion die of...

Embodiment 2

[0035] Preparation of flame retardant: Add deionized water dropwise to 48g polyaspartic acid, stir while adding dropwise until completely dissolved, heat to reflux state and keep stirring for 5min, then add 45g p-hydroxystyrene and 2g diphenylchrome , continue to reflux and stir for 1h, then add 5g of hydroxy silicone oil, and reflux and stir again for 0.5h. The resulting mixture is naturally cooled to room temperature and then sent to a spray dryer. Acid / P-Hydroxystyrene.

[0036] The heat stabilizer is a mixture of dibasic lead stearate and p-phenylenediamine with a mass ratio of 1:1.5.

[0037] Preparation of modified aluminum hydroxide: Grind 65g of aluminum hydroxide into powder, add it to 95g of 95% ethanol, heat to reflux state and keep stirring for 5min, then add 10g of sodium stearate, stir under reflux for 15min; then add 15g of trihydroxy Methylpropane and 10g epoxidized soybean oil, reflux and heat preservation and stirring for 1h; filter while hot, wash the preci...

Embodiment 3

[0057] The flame-retardant TPU film was prepared by using Example 1-2 and Comparative Example 1-2, and the flame-retardant performance of the flame-retardant TPU film was tested. The results are shown in Table 1.

[0058] Table 1 Flame retardant performance test of flame retardant TPU film

[0059]

[0060] The flame retardancy of each film sample (50 mm x 200 mm) was evaluated according to the UL-94 standard method. The total burn time was obtained from the sum of the first burn time and the second burn time of the sample. Measure the number of drips from the sample during combustion. When dripping is observed during burning, confirm whether the cotton is ignited by the dripping molten resin and record the number of dripping.

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PUM

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Abstract

The invention discloses a flame-retardant TPU film and a preparation technology thereof. The flame-retardant TPU film is prepared from the following raw materials in parts by weight: 40 to 50 parts ofTPU particles, 10 to 15 parts of a flame retardant, 5 to 10 parts of flame-retardant filler, 5 to 10 parts of a heat stabilizer, 5 to 10 parts of aluminum hydroxide, 2 to 5 parts of a lubricant and 2to 5 parts of a plasticizer. According to the flame-retardant TPU film disclosed by the invention, the flame retardant with excellent performance is newly synthesized, and a synthesizing method is simple; meanwhile, according to the flame-retardant TPU film disclosed by the invention, the aluminum hydroxide is modified, and physical mechanical property and resin affinity of the aluminum hydroxideare enhanced.

Description

Technical field: [0001] The invention relates to a TPU film, in particular to a flame-retardant TPU film, and meanwhile, the invention also relates to a preparation process of the flame-retardant TPU film. Background technique: [0002] TPU (thermoplastic polyurethane) is increasingly popular because of its superior performance and environmental protection concept. TPU not only has excellent high tension, high tensile strength, toughness and aging resistance, but also is a mature environmental protection material. At present, TPU has been widely used in: shoe materials, garments, inflatable toys, water and underwater sports equipment, medical equipment, fitness equipment, car seat materials, umbrellas, luggage, bags, etc. [0003] TPU film is made of TPU pellets by calendering, casting, film blowing, coating and other processes. At present, it is widely used in sports shoes: trademark decoration on soles and uppers, air bags, air cushions, oil bags, etc. [0004] At prese...

Claims

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Application Information

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IPC IPC(8): C08L75/04C08L75/02C08K13/02C08K3/34C08K3/22C08J5/18
CPCC08J5/18C08J2375/04C08J2475/02C08K3/34C08K13/02C08K2003/2227
Inventor 温同民刘磊
Owner 安徽嘉明新材料科技有限公司
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