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Plastic bottle capable of reversibly changing color at room temperature as well as preparation method and application thereof

A color-changing plastic and room temperature technology, applied in the field of polymer materials, can solve the problems of loss of compatible color-changing components, discoloration, etc.

Inactive Publication Date: 2020-10-02
张洪胜
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the defects in the above-mentioned prior art and provide a room temperature reversible discoloration plastic bottle. The matrix material of the room temperature reversible discoloration is a block copolymer capable of room temperature discoloration. The room temperature reversible color-changing plastic bottle made of the block copolymer does not have the problems of poor compatibility between the plastic product and the thermochromic film and the loss of the color-changing component, and the prepared plastic bottle has obvious discoloration at 26-31 °C , so that the prepared plastic bottles show different colors throughout the year

Method used

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  • Plastic bottle capable of reversibly changing color at room temperature as well as preparation method and application thereof
  • Plastic bottle capable of reversibly changing color at room temperature as well as preparation method and application thereof
  • Plastic bottle capable of reversibly changing color at room temperature as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Synthesis of polypropylene macromolecular transfer agents.

[0034] Weigh DDAT (0.73g, 2mmol) into a 100ml branch bottle with a stirring bar, install a reflux condenser, inject 40ml of anhydrous tetrahydrofuran THF with a disposable syringe, and slowly add chlorinated chlorinated acid dropwise under constant stirring at room temperature. Sulfone SOCl 2 (0.72ml, 10mmol), after the dropwise addition, reflux at 80°C for 1.5h, and remove SOCl under reduced pressure after finishing the reaction 2 and THF to obtain a yellow oily product A, which was dissolved by adding an appropriate amount of anhydrous toluene.

[0035] Add single-end hydroxylated polypropylene PP-OH (2g, 0.4mmol) in a check flask equipped with a stirring bar, under N 2 Under the atmosphere, inject 40ml of anhydrous toluene with a disposable syringe, heat to 80°C, slowly add the above-mentioned yellow oily product A dissolved in toluene solution dropwise, stir at 85°C for 3h, after the reaction is complete...

Embodiment 2

[0037] Synthesis of thermosensitive polypropylene diblock copolymers.

[0038] Add AIBN (1.64mg, 0.01mmol), polypropylene macromolecular transfer agent (0.54g, 0.10mmol), NIPAM (1.36g, 12.0mmol) and 6ml of toluene / DMF (v / v:10 / 1) mixed solvent, after three cycles of liquid nitrogen freezing-pumping-thawing, polymerization reaction was carried out in an oil bath at 85°C, after the polymer was dissolved, reacted for another 0.5h and immediately took out the Schlenk bottle and put it into the liquid Cool in nitrogen, repeat THF / ether dissolution / precipitation cycle twice, and dry at 40°C in vacuum to constant weight to obtain 1.54 g of yellow solid powder with a yield of 81%, which is a thermosensitive polypropylene diblock copolymer.

Embodiment 3

[0040] Preparation of room temperature reversible color plastic bottles.

[0041] According to 86.5 parts of temperature-sensitive polypropylene diblock copolymer, 3.4 parts of organotin stabilizer, 2.3 parts of polyvinyl alcohol, 1.4 parts of antioxidant, 3.5 parts of zinc stearate, 2.5 parts of flame retardant, and 0.4 parts of other additives Weigh the raw materials, stir and mix each component material with a mixer, dry mix in a high-speed mixer for 8 minutes to obtain mixture a, put mixture a into a twin-screw extruder to extrude and granulate, and the screw extruder The middle extrusion processing temperature is controlled at 160°C, the vacuum negative pressure is above 0.6MPA, the preform is extruded, the thickness of the preform is adjusted to be uniform, and the weight is set according to the product standard, and finally a room temperature reversible color plastic bottle is formed.

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Abstract

The invention discloses a plastic bottle capable of reversibly changing color at room temperature as well as a preparation method and application thereof. The plastic bottle is prepared from the following raw materials by mass: 80 to 90 parts of a temperature-sensitive polypropylene diblock copolymer, 2.5 to 4.5 parts of an organic tin stabilizer, 1.5 to 3.5 parts of polyvinyl alcohol, 1.2 to 1.5parts of an antioxidant, 1.5 to 5.5 parts of zinc stearate, 1.5 to 3.5 parts of a flame retardant and 0.2 to 0.5 part of other auxiliary agents. The base material capable of reversibly changing colorat room temperature is a segmented copolymer capable of changing color at room temperature. The plastic bottle prepared from the segmented copolymer capable of changing color at room temperature doesnot have the problems of poor compatibility between a plastic product and a thermochromic film and loss of color-changing components, and the prepared plastic bottle has an obvious color-changing phenomenon at 26-31 DEG C, so that the prepared plastic bottle shows different colors all the year round.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a room-temperature reversible discoloration plastic bottle and its preparation method and application. Background technique [0002] Polypropylene, referred to as PP, is a colorless, odorless, non-toxic, translucent solid substance. It is a thermoplastic synthetic resin with excellent performance. It is a colorless and translucent thermoplastic lightweight general-purpose plastic. With chemical resistance, heat resistance, electrical insulation, high-strength mechanical properties and good high wear-resistant processing properties, etc., polypropylene has been rapidly used in machinery, automobiles, electronic appliances, construction, textiles, and packaging since its inception. It has been widely developed and applied in many fields such as agriculture, forestry, fishery and food industry. In recent years, with the rapid development of my country's packaging, elect...

Claims

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Application Information

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IPC IPC(8): C08L53/00C08L29/04C08K13/02C08K5/098C08K3/22C08F293/00
CPCC08F293/005C08K2003/2227C08L53/00C08L2203/10C08L29/04C08K13/02C08K5/098C08K3/22C08K3/2279
Inventor 张洪胜
Owner 张洪胜