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Transparent TPU film with barrier performance and preparation method of transparent TPU film

A thin-film and transparent technology, applied in the field of polymers, can solve the problems of reduced gas barrier properties and application limitations, and achieve the effects of improved transparency, good transparency and fewer crystal points

Inactive Publication Date: 2015-01-07
SUZHOU XIONGLIN NEW MATERIAL SCI & TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The absence of silane coupling agents will result in a reduction in gas barrier properties even in the presence of multivalent metal cations as a second coating
[0007] TPU films usually have good transparency, however, because the optical transparency of conventional TPU is inversely proportional to the molding efficiency, and usually interacts with barrier properties, so the application on many large transparent injection molded parts has been restricted. certain restrictions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] (1) Prepare raw materials according to the following weight percentages:

[0044] Thermoplastic polyurethane 45%, SBS 5%, K glue 25%, inorganic filler 5% and barrier agent 20%;

[0045] Wherein said thermoplastic polyurethane is prepared by the reaction of polyol, polyisocyanate and chain extender, and said polyol is polyadipate-1,4-butylene glycol ester diol; said polyisocyanate is benzhydryl Alkane isocyanate; the chain extender is 15% aliphatic diamine, 40% 1,4-cyclohexanedimethanol and 45% 1,4-cyclohexanedimethanol; the SBS is 792 produced by Yueyang Petrochemical; The K glue is Zhonghe SL-803G; the inorganic filler is montmorillonite;

[0046]The barrier agent is maleic anhydride modified polypropylene copolymer, terephthalic acid, ethylene glycol and barrier comonomer; the maleic anhydride modified polypropylene copolymer accounts for 35% of the total amount of barrier agent, other The component is 65%; the melt index of the maleic anhydride modified polypropyle...

Embodiment 2

[0063] Thermoplastic polyurethane 40%, SBS 5%, K glue 30%, inorganic filler 5% and barrier agent 20%;

[0064] Wherein said thermoplastic polyurethane is prepared by the reaction of polyol, polyisocyanate and chain extender, and said polyol is polyadipate-1,4-butylene glycol ester diol; said polyisocyanate is benzhydryl Alkane isocyanate; the chain extender is 15% aliphatic diamine, 40% 1,4-cyclohexanedimethanol and 45% 1,4-cyclohexanedimethanol; the SBS is 3540 produced by Taiwan Li Changrong; The K glue is the KR-05 of Chevron; the inorganic filler is silicon dioxide;

[0065] The barrier agent is maleic anhydride modified polypropylene copolymer, terephthalic acid, ethylene glycol and barrier comonomer; the maleic anhydride modified polypropylene copolymer accounts for 30% of the total amount of barrier agent, other The component is 70%; the melt index of the maleic anhydride modified polypropylene copolymer is 2.5g / 10min, and the density is 0.89g / cm 3 ; The barrier monom...

Embodiment 3

[0069] Thermoplastic polyurethane 58%, SBS 2%, K glue 20%, inorganic filler 5% and barrier agent 15%;

[0070] Wherein said thermoplastic polyurethane is prepared by the reaction of polyol, polyisocyanate and chain extender, and said polyol is polyadipate-1,4-butylene glycol ester diol; said polyisocyanate is benzhydryl Alkane isocyanate; the chain extender is 15% aliphatic diamine, 40% 1,4-cyclohexanedimethanol and 45% 1,4-cyclohexanedimethanol; the SBS is 792 produced by Yueyang Petrochemical; Described K glue is the KR-03 of Chevron; Described inorganic filler is talcum powder;

[0071] The barrier agent is maleic anhydride modified polypropylene copolymer, terephthalic acid, ethylene glycol and barrier comonomer; the maleic anhydride modified polypropylene copolymer accounts for 30% of the total amount of barrier agent, other The component is 70%; the melt index of the maleic anhydride modified polypropylene copolymer is 2.5g / 10min, and the density is 0.89g / cm 3 ; The ba...

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Abstract

The invention relates to a transparent TPU film with barrier performance and a preparation method of the transparent TPU film. The transparent TPU film comprises the following components in percentage by weight: 40-60% of thermoplastic polyurethane, 2-5% of SBS, 20-30% of K adhesive, 5-8% of inorganic filler and 12-20% of barrier agent. The preparation method comprises the following concrete steps of (1) after mixing all the materials, plasticizing TPU particles by using a single-screw extruder to form a semi-finished product; (2) directly connecting the single-screw extruder to a filtering machine of calendar equipment, and carrying out impurity filtration and re-plasticization on the semi-finished product on the filtering machine of the calendar equipment; and (3) processing the plasticized semi-finished product by using four-roller molding equipment to mold the film. The TPU film prepared by using the preparation method has high transparency and favorable barrier performance, tensile strength and processability.

Description

technical field [0001] The invention relates to the technical field of polymers, in particular to a polyurethane elastomer and a preparation method thereof, in particular to a transparent barrier TPU film and a preparation method thereof. Background technique [0002] Synthetic plastic materials have long been used in the packaging of food and other materials that require protection from handling and moisture. In recent years, however, it has been recognized that many food and other sensitive materials also benefit from protection from atmospheric oxygen and other gases. Barrier films and packaging materials intended to reduce or inhibit the permeation of gases, vapors, fragrances, etc. have been extensively described. [0003] Polyurethane, a common synthetic plastic material, has been widely used in barrier applications. Several companies, such as PPG, Mitsubishi and Mitsui, etc. have reported the development of barrier polyurethanes. However, after evaluating these sys...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/06C08L53/02C08L51/06C08L67/00C08K3/34C08G63/127C08G63/85B29D7/01
Inventor 王一良何健雄
Owner SUZHOU XIONGLIN NEW MATERIAL SCI & TECH CO LTD
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