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A kind of graphene modified antistatic tpu film

A graphene modification and antistatic technology, applied in the field of TPU film, can solve the problems of difficult dispersion, uniform and stable existence, increase manufacturing cost, incompatibility of organic polymers, etc., to enhance mechanical properties and improve antistatic properties. , the effect of enhancing electrical conductivity

Active Publication Date: 2021-09-07
安徽嘉明新材料科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing antistatic products need to add a large amount of conductive fillers, such as carbon black, metal fillers such as lead, nickel, silver, etc., metal oxide fillers such as alumina, etc. The addition of these fillers will inevitably greatly increase the manufacturing cost, and these Inorganic conductive fillers are incompatible with organic polymers, making it difficult to disperse uniformly and exist stably

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Preparation of antistatic TPU film:

[0034] (1) Add 60 parts of polyether type TPU resin, 2 parts of modified graphene, 2 parts of heat stabilizer, and 1 part of nano-alumina to a twin-screw extruder for blending and extrusion, cooling, and pelletizing to obtain Premixed granules; wherein the rotating speed of the twin-screw extruder is 100r / min, the temperature of the barrel and the extrusion die of the twin-screw extruder is 105°C, and the rotating speed of the pelletizer is 150r / min;

[0035] (2) Mix the premixed granules, 2 parts of microcrystalline paraffin, and 1 part of triphenyl phosphate into the film blowing machine for plasticizing and extruding; the temperature of the feeding section of the blowing film machine is set at 130°C, and the temperature of the plasticizing section Set at 160°C, the die head temperature is set at 150°C;

[0036] (3) The plasticized extruded material is blown and drawn to make a film, then cooled by the air ring, drawn by a drawin...

Embodiment 2

[0040] Preparation of antistatic TPU film:

[0041] (1) Add 70 parts of polyether type TPU resin, 2 parts of modified graphene, 3 parts of heat stabilizer, and 1.5 parts of nano-alumina into a twin-screw extruder for blending and extrusion, cooling, and pelletizing to obtain Premixed granules; wherein the rotating speed of the twin-screw extruder is 100r / min, the temperature of the barrel and the extrusion die of the twin-screw extruder is 105°C, and the rotating speed of the pelletizer is 150r / min;

[0042] (2) Mix the premixed granules, 2 parts of microcrystalline paraffin, and 1 part of triphenyl phosphate into the film blowing machine for plasticizing and extruding; the temperature of the feeding section of the blowing film machine is set at 130°C, and the temperature of the plasticizing section Set at 160°C, the die head temperature is set at 150°C;

[0043] (3) The plasticized extruded material is blown and drawn to make a film, then cooled by the air ring, drawn by a d...

Embodiment 3

[0066] Based on Example 1, a comparative example 1 without adding ammonia water, a comparative example 2 without modifying graphene, and a comparative example 3 without modifying nano-alumina are set.

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PUM

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Abstract

The invention discloses a graphene-modified antistatic TPU film, which is prepared from the following raw materials in parts by mass: 60-80 parts of polyether-type TPU resin, 1-3 parts of modified graphene, and 2-4 parts of thermal stabilizer , 1-3 parts of lubricant, 1-2 parts of plasticizer, and 0.5-2 parts of nano-alumina; after graphene oxide is modified by silane coupling agent and reduced by ammonia water, it is uniformly dispersed in TPU resin, and at the same time It does not polymerize itself, which enhances the electrical conductivity and impact resistance of the TPU film; after the nano-alumina is modified, the mechanical properties of the nano-alumina and the affinity for the resin material are enhanced; at the same time, the nano-alumina, graphite The amount of alkene is less, which reduces the production.

Description

Technical field: [0001] The invention relates to a TPU film, in particular to a graphene-modified antistatic TPU film. Background technique: [0002] As a new type of environmentally friendly polymer material, TPU is widely used in medical, food, hygiene and other industries. Graphene is a new nanomaterial in the past 20 years. Due to its excellent performance, it has attracted attention in various fields. Adding graphene as a modifier to polymer materials will significantly improve the mechanical properties of polymer materials, but the current preparation methods of graphene cannot be mass-produced, and the dispersion effect in polymers is not good, resulting in graphene Applications in the field of polymer composites are limited. [0003] With the rapid development of the electronics industry, the demand for electronic protective film products with antistatic effect has increased greatly, and transparent film products with antistatic effect are bound to receive extensiv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/08C08L91/06C08K13/06C08K9/06C08K9/02C08K9/04C08K3/04C08K3/22C08K5/523C08J5/18
CPCC08J5/18C08J2375/08C08J2491/06C08K5/523C08K9/02C08K9/04C08K9/06C08K13/06C08K2003/2227C08K2201/011C08K3/042
Inventor 刘磊杨建军项宏亮张建安何祥燕吴庆云吴明元刘久逸
Owner 安徽嘉明新材料科技有限公司
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