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Anti-blocking master batch for thermoplastic polyurethane film and preparation method of anti-blocking master batch

A thermoplastic polyurethane and anti-blocking technology, applied in the field of TPU materials, can solve the problems of affecting film transparency, large amount of addition, difficulty in dispersion, etc., and achieve the effect of maintaining no precipitation and slippery feeling, reducing friction coefficient, and simple production process

Inactive Publication Date: 2021-10-08
浙江凯阳新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these anti-blocking agents have deficiencies in varying degrees, such as difficulty in dispersion, easy precipitation, and problems such as affecting the transparency of the film.
Inorganic anti-adhesive agents achieve the effect of anti-adhesion through physical isolation. The disadvantage is that in order to achieve a specific anti-adhesive effect, a large amount is added, which affects the transparency of the product.
Organic anti-sticking agents mainly provide lubrication for the surface of the material by changing the surface tension of the material to achieve the anti-sticking effect. The addition amount can be moderate, but it is easier to precipitate and affect the appearance of the product

Method used

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  • Anti-blocking master batch for thermoplastic polyurethane film and preparation method of anti-blocking master batch
  • Anti-blocking master batch for thermoplastic polyurethane film and preparation method of anti-blocking master batch

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Experimental program
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Effect test

Embodiment 1

[0024] This project aims to research and develop an anti-blocking masterbatch for thermoplastic polyurethane film, which contains the following components: TPU: 95%, anti-blocking agent: 4%, antistatic agent: 1%; among them, anti-blocking agent mainly For the compounding of amide waxes and nano-scale silica, the amide waxes used include but not limited to oleic acid amide, erucic acid amide, behenic acid amide, stearic acid amide and ethylene bisoleic acid amide, etc. or montan wax .

[0025] The anti-blocking masterbatch is a special anti-blocking masterbatch for aliphatic TPU. After use, it quickly disperses on the surface of the film to form a lubricating molecular layer, which reduces the friction coefficient of the film and has an excellent anti-blocking effect.

[0026] The anti-adhesion masterbatch is a polymer permanent anti-adhesion masterbatch that is insoluble in water. Its appearance is white powder or granular anti-adhesion masterbatch, and its thermal decomposit...

Embodiment 2

[0034] An anti-blocking master batch for thermoplastic polyurethane film, the master batch comprises the following components: TPU: 94%, anti-blocking agent: 4%, antistatic agent: 2%.

[0035] A kind of preparation method of anti-blocking masterbatch for thermoplastic polyurethane film, comprises the steps:

[0036] Step 1, weighing each component according to the weight ratio; TPU: 94%, anti-blocking agent: 4%, antistatic agent: 2%;

[0037] Step 2: Mix TPU particles and antistatic agent into a high-speed mixer, stir at a high speed of 3000-6000r / min at a temperature of 100-120°C for 20-50min, and then discharge the material into a low-speed cooling mixer to Stir at a speed of 50-120r / min, and wait until the material is cooled to 40°C-50°C to obtain a premix;

[0038] Step 3: Add an anti-blocking agent to the premix in Step 2, continue to stir for 10-30 minutes, and discharge after mixing evenly;

[0039] Step 4, put the material prepared in step 3 into a twin-screw extrude...

Embodiment 3

[0041] An anti-blocking master batch for thermoplastic polyurethane film, the master batch comprises the following components: TPU: 93%, anti-blocking agent: 5%, antistatic agent: 2%.

[0042] A kind of preparation method of anti-blocking masterbatch for thermoplastic polyurethane film, comprises the steps:

[0043] Step 1, weighing each component according to the weight ratio; TPU: 4%, anti-blocking agent: 4%, antistatic agent: 2%;

[0044]Step 2: Mix TPU particles and antistatic agent into a high-speed mixer, stir at a high speed of 3000-6000r / min at a temperature of 100-120°C for 20-50min, and then discharge the material into a low-speed cooling mixer to Stir at a speed of 50-120r / min, and wait until the material is cooled to 40°C-50°C to obtain a premix;

[0045] Step 3: Add anti-blocking agent to the premix in Step 2, continue to stir for 10-30 minutes, and discharge the mixture after mixing evenly;

[0046] Step 4, put the material prepared in step 3 into a twin-screw ...

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Abstract

The invention relates to an anti-blocking master batch for a thermoplastic polyurethane film and a preparation method of the anti-blocking master batch. The master batch comprises the following components: 90-95% of TPU, 0.5-5% of an anti-blocking agent and 0.5-2% of an antistatic agent, wherein the contents of the components sums to 100%. The anti-blocking master batch disclosed by the invention is a special anti-blocking master batch for aliphatic TPU; and after being used, the anti-blocking agent is quickly dispersed on the surface of the film to form a lubricating molecular layer, so the friction coefficient of the film is reduced, and an excellent anti-blocking effect is achieved.

Description

technical field [0001] The invention belongs to the technical field of TPU materials, and in particular relates to an anti-blocking masterbatch for a thermoplastic polyurethane (TPU) film and a preparation method thereof. Background technique [0002] Thermoplastic polyurethanes (TPU for short). It is a linear macromolecule formed by polymerizing the soft segment of oligomer polyol and the hard segment of diisocyanate-chain extender. TPU extruded product is the product that TPU pellets are plasticized by extruder and cooled by die head. Products formed by extrusion include: wire harness pipes, films, profiled materials, etc. TPU products are widely used in daily life and are an indispensable thermoplastic elastomer for national life. However, during the production and accumulation process of TPU film, due to the existence of surface tension, when the film layers are pressed or heated, it is easy to bond and not easy to separate, thus affecting production or use. [0003]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08L91/06C08K5/20C08K3/36C08J3/22C08J5/18
CPCC08J3/226C08J5/18C08J2375/04C08J2475/04C08J2491/06C08K5/20C08K3/36C08K2201/011
Inventor 于逢源李峰刘涛
Owner 浙江凯阳新材料股份有限公司
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