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High-strength PET (Polyethylene Terephthalate) plastic box material and preparation process thereof

A high-strength, plastic box technology, applied in the field of plastic boxes and PET plastic boxes, can solve the problems of brittle fracture, poor toughness, and high brittleness of products

Pending Publication Date: 2022-04-29
河源市万利科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the above-mentioned technical problems, the object of the present invention is to provide a high-strength PET plastic box material and its preparation process: by vacuum-drying the PET material, adding a modifier and a heat stabilizer, and mixing evenly to obtain a mixed After that, the mixture is added to a twin-screw extruder to extrude and granulate, and then the pellets are vacuum-dried to obtain the high-strength PET plastic box material, which solves the problem of poor toughness and brittleness of the existing PET plastic box materials. Large, if it is directly made into a PET plastic box product, there is a problem that the product is prone to brittle fracture

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Present embodiment is a kind of preparation method of modifying agent, comprises the steps:

[0041] S11: Add 0.1mol of dodecylamine, 50mL of methanol, 2mmol of phenothiazine and 0.4g of sodium methoxide into a three-necked flask equipped with a stirrer and a constant pressure dropping funnel, at a temperature of 20°C and a stirring rate of 200r / min Add 0.22 mol of methyl acrylate dropwise while stirring under the conditions of 1 drop / s. After the drop is completed, the temperature is raised to 45°C and the reaction is stirred at a constant temperature for 20 hours. After the reaction is completed, the reaction product is cooled to room temperature. Use methanol-dichloromethane mixture as eluent to carry out column chromatography separation and purification to obtain intermediate 1;

[0042] S12: Add 0.1mol of intermediate 1, 200mL of methanol and 0.4g of sodium methoxide into a three-necked flask equipped with a stirrer and a constant pressure dropping funnel, and stir...

Embodiment 2

[0047] Present embodiment is a kind of preparation method of modifying agent, comprises the steps:

[0048] S21: Add 0.1mol of dodecylamine, 50mL of methanol, 2.5mmol of phenothiazine and 0.45g of sodium methoxide into a three-necked flask equipped with a stirrer and a constant pressure dropping funnel, at a temperature of 22°C and a stirring rate of 250r / Add 0.22mol methyl acrylate dropwise while stirring under the condition of min, and control the dropping rate at 2 drops / s. After the dropwise addition, raise the temperature to 48°C and stir at a constant temperature for 25 hours. After the reaction, cool the reaction product to room temperature , using methanol-dichloromethane mixture as eluent to carry out column chromatography separation and purification to obtain intermediate 1;

[0049] S22: Add 0.1mol of intermediate 1, 200mL of methanol and 0.45g of sodium methoxide into a three-necked flask equipped with a stirrer and a constant pressure dropping funnel, and stir wh...

Embodiment 3

[0054] Present embodiment is a kind of preparation method of modifying agent, comprises the steps:

[0055] S31: Add 0.1mol of dodecylamine, 50mL of methanol, 3mmol of phenothiazine and 0.5g of sodium methoxide into a three-necked flask equipped with a stirrer and a constant pressure dropping funnel, at a temperature of 25°C and a stirring rate of 300r / min Add 0.22 mol of methyl acrylate dropwise while stirring under the condition of 2 drops / s, control the drop rate at 2 drops / s, and then raise the temperature to 50°C and stir for 30 hours at a constant temperature. After the reaction, cool the reaction product to room temperature. Use methanol-dichloromethane mixture as eluent to carry out column chromatography separation and purification to obtain intermediate 1;

[0056] S32: Add 0.1mol of intermediate 1, 200mL of methanol and 0.5g of sodium methoxide into a three-necked flask equipped with a stirrer and a constant pressure dropping funnel, and stir while stirring at a temp...

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Abstract

The invention relates to the field of plastic boxes, aims at solving the problems that an existing PET plastic box material is poor in toughness and large in brittleness, and if the existing PET plastic box material is directly made into a PET plastic box product, the risk of brittle fracture of the product is likely to happen, and particularly relates to a high-strength PET plastic box material and a preparation technology thereof. According to the high-strength PET plastic box material, the high-strength PET plastic box material is obtained by uniformly mixing the raw materials and the modifier, adding the mixture into a double-screw extruder for extrusion granulation and then drying the granules, and after the PET material is modified by the modifier, the defects that the PET material is poor in toughness, high in brittleness and prone to brittle rupture are overcome; the PET glue box made of the PET glue box is not prone to damage, the production cost of the PET glue box is reduced, packaged products can be effectively protected in subsequent use, and development of the PET glue box production industry is promoted.

Description

technical field [0001] The invention relates to the field of plastic boxes, in particular to the field of PET plastic boxes, and more specifically to a high-strength PET plastic box material and a preparation process thereof. Background technique [0002] Plastic box refers to the product outer packaging box made of PPC, PVC, PET / APET and processed through a series of processes such as printing, die-cutting, and box gluing. Compared with traditional cartons and other packaging, plastic boxes are environmentally friendly. , non-toxic, high transparency, more intuitive display of the packaged products and other advantages, can effectively improve the product packaging grade; [0003] Because PET has excellent performance and is a kind of green environmental protection material that can be completely recycled, it is more and more favored by the packaging industry, but because of its poor toughness and processing performance, and as the temperature decreases, its resistance The...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L75/04C08K5/098
CPCC08L67/02C08K2201/014C08L75/04C08K5/098
Inventor 奉海珍谢石锦
Owner 河源市万利科技有限公司
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