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High-barrier plastic sheet and production process thereof

A technology of plastic sheet and production process, applied in layered products, other household appliances, synthetic resin layered products, etc., can solve problems such as poor barrier properties, improve strength and barrier properties, stabilize product performance, and improve mechanical strength. Effect

Inactive Publication Date: 2021-07-16
苏州清之绿新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The materials used for food packaging must have different high barrier properties. For example, oily food requires high resistance to oxidation and oil resistance, dry food requires high resistance to moisture; and fresh fruits and vegetables require packaging with certain oxygen and carbon dioxide. At the same time, materials are required to have good mechanical properties and chemical stability to ensure the quality of food packaging and food safety. The barrier performance of plastic packaging containers has a wide market demand and great development potential. At present, packaging plastic sheets still exist Disadvantages of poor barrier properties

Method used

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  • High-barrier plastic sheet and production process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A high-barrier plastic sheet, wherein: the high-barrier plastic sheet includes a substrate layer and a barrier layer arranged on the substrate layer, and the barrier layer includes the following components in parts by weight: polystyrene resin 100 parts, 2 parts of polyalkylene glycol; 0.5 part of hydroquinone bis(β-hydroxyethyl) ether, 1 part of toughening agent; 0.5 part of strengthening agent, 0.3 part of antioxidant.

[0040] The toughening agent includes lignin urea-formaldehyde resin and polyether triol, and the mass ratio of lignin urea-formaldehyde resin and polyether triol is 2:1; the reinforcing agent is polylactide fiber filament and tetrafluoroethylene-butadiene copolymer , the mass ratio of polylactide fiber silk and tetrafluoroethylene-butadiene copolymer is 1:1; Antioxidant is three (2,4-di-tert-butyl base) phosphite; Barrier layer also includes Strontium oxide, the strontium oxide is composed of the following components by mass: 50 wt% of 10-40 μm stront...

Embodiment 2

[0047] A high-barrier plastic sheet, wherein: the high-barrier plastic sheet includes a substrate layer and a barrier layer arranged on the substrate layer, and the barrier layer includes the following components in parts by weight: polystyrene resin 100 parts, 4 parts of polyalkylene glycol; 1 part of hydroquinone bis(β-hydroxyethyl) ether, 2 parts of toughening agent; 1 part of reinforcing agent, 0.4 part of antioxidant.

[0048] The toughening agent includes lignin urea-formaldehyde resin and polyether triol, and the mass ratio of lignin urea-formaldehyde resin and polyether triol is 3:1; the reinforcing agent is polylactide fiber filament and tetrafluoroethylene-butadiene copolymer, so The mass ratio of polylactide fiber silk and tetrafluoroethylene-butadiene copolymer is 2:1; ] a mixture of pentaerythritol ester, 2,6-tertiary butyl-4-methylphenol, and dodecyl alcohol ester, the mass ratio is 1:1:1, and the barrier layer also includes strontium oxide, which consists of the...

Embodiment 3

[0055] A high-barrier plastic sheet, wherein: the high-barrier plastic sheet includes a substrate layer and a barrier layer arranged on the substrate layer, and the barrier layer includes the following components in parts by weight: polystyrene resin 100 parts, 7 parts of polyalkylene glycol; 2 parts of hydroquinone bis(β-hydroxyethyl) ether, 4 parts of toughening agent; 3 parts of reinforcing agent, 0.6 part of antioxidant, toughening agent including lignin urea-formaldehyde Resin and polyether triol, lignin urea-formaldehyde resin and polyether triol mass ratio are 4:1, reinforcing agent is polylactide fiber silk and tetrafluoroethylene-butadiene copolymer, described polylactide fiber silk and The mass ratio of tetrafluoroethylene-butadiene copolymer is 3:1, and the antioxidant is tri(2,4-di-tert-butyl base)phosphite, tetrakis[β-(3,5-tertiary butyl -4-hydroxyphenyl)propionic acid]pentaerythritol ester, 2,6-tertiary butyl-4-methylphenol, didodecyl alcohol ester, the mass rati...

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Abstract

The invention provides a high-barrier plastic sheet. The high-barrier plastic sheet comprises a base material layer and a barrier layer arranged on the base material layer, wherein the barrier layer comprises the following components in parts by weight: 100 parts of polystyrene resin, 2-7 parts of polyalkylene glycol, 0.5-2 parts of hydroquinone bis(beta-ethoxyl)ether, 1-4 parts of a flexibilizer, 0.5-3 parts of a reinforcing agent and 0.3-0.6 part of an antioxidant. According to the high-barrier plastic sheet and the production process thereof disclosed by the invention, the advantages of 2 parts of the polyalkylene glycol and the hydroquinone bis(beta-hydroxyethyl)ether are utilized, and the polyalkylene glycol and the hydroquinone bis(beta-hydroxyethyl)ethe are combined to complement each other, so the mechanical strength, the flexibility, the water vapor barrier property and the oxygen barrier property of the plastic sheet are improved; and strontium oxide of two specifications is introduced and added into the barrier layer, so strontium oxide particles are tightly arranged in the barrier layer, an internal structure is uniform, product performance is stable, comprehensive strength is high, and the strength and the barrier property of the plastic sheet can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of plastic sheets, in particular to a high-barrier plastic sheet and a production process thereof. Background technique [0002] Various thermoformed containers, such as cups, bowls, and pots, are used more and more widely in daily life. With the improvement of people's requirements for quality of life, the grade requirements for the aforementioned products are also getting higher and higher in the market. The materials used for food packaging must have different high barrier properties. For example, oily food requires high resistance to oxidation and oil resistance, dry food requires high resistance to moisture; and fresh fruits and vegetables require packaging with certain oxygen and carbon dioxide. At the same time, materials are required to have good mechanical properties and chemical stability to ensure the quality of food packaging and food safety. The barrier performance of plastic packaging container...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/30B32B27/06B32B27/18C08L25/06C08L71/02C08L71/00C08L97/00C08L61/24C08L67/04C08L27/18C08K5/06C08K3/22C08J5/18B29D7/01
CPCB32B27/302B32B27/08B32B27/18C08J5/18B29D7/01B32B2307/50B32B2307/558B32B2307/7246B32B2307/7244C08J2325/06C08J2471/02C08J2471/00C08J2497/00C08J2461/24C08J2427/18C08K5/06C08K3/22
Inventor 刘永清
Owner 苏州清之绿新材料有限公司