TPE/PVAC composite fresh-keeping box cover and preparation method thereof

A composite fresh-keeping and box cover technology is applied in the field of TPE/PVAC composite fresh-keeping box cover and its preparation field, which can solve the problems of lack of high-temperature resistance performance of the fresh-keeping box cover, deformation of the fresh-keeping box, and inability to seal the fresh-keeping box.

Inactive Publication Date: 2017-09-22
ANHUI YUEERWEI PLASTIC MACHINE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the lid of the crisper is mainly made of polymer, which can basically meet the market demand, but in the process of use, it is often found that the crisper cannot be sealed immediately after fi

Method used

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Examples

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Effect test

preparation example Construction

[0012] The invention provides a method for preparing a TPE / PVAC composite fresh-keeping box cover, comprising:

[0013] 1) mixing soluble aluminum salt, soluble magnesium salt, soluble zirconium salt, urea and water to make a salt solution, and then performing a hydrothermal reaction to obtain a hydrothermal product;

[0014] 2) ball milling the hydrothermal product in a silane coupling agent to obtain a modified hydrothermal product;

[0015] 3) Mix TPE (thermoplastic rubber), PVAC (polyethyl acetate), talcum powder, stearic acid, paraffin oil, diisononyl phthalate, silicon micropowder, modified hydrothermal product and oleic acid , Molding to make TPE / PVAC composite crisper lid.

[0016] In step 1) of the above-mentioned preparation method, the consumption of each material can be selected in a wide range, but in order to further improve the high temperature resistance of the prepared fresh-keeping box cover, preferably, in step 1), relative to 1 mmol The amount of soluble ...

Embodiment 1

[0028] 1) Mix soluble aluminum salt (aluminum chloride), soluble magnesium salt (magnesium chloride), soluble zirconium salt (zirconium chloride), urea and water according to the dosage ratio of 1mmol: 0.6mmol: 0.2mmol: 4mmol: 8mL Salt solution, followed by hydrothermal reaction at 180°C for 16h to obtain a hydrothermal product;

[0029] 2) Ball mill the hydrothermal product and silane coupling agent (silane coupling agent Kh550) at a molar ratio of 1:0.15 (the number ratio of large balls to small balls is 2:1, and the mass ratio of grinding balls to materials is 10:2.3, the rotating speed is 900rpm, the ball milling time is 50min) to obtain the modified hydrothermal product;

[0030] 3) Mix TPE (SBS), PVAC, talcum powder, stearic acid, paraffin oil, diisononyl phthalate, silicon micropowder, modified hydrothermal product and oleic acid according to the ratio of 100:50:12:29:12 : 29: 6: 4: 34 weight ratio, kneading at 210°C for 5 hours, extrusion molding to obtain TPE / PVAC co...

Embodiment 2

[0032] 1) Mix soluble aluminum salt (aluminum nitrate), soluble magnesium salt (magnesium nitrate), soluble zirconium salt (zirconium nitrate), urea and water according to the dosage ratio of 1mmol: 0.5mmol: 0.1mmol: 3mmol: 5mL to make salt solution, followed by a hydrothermal reaction at 170°C for 12 hours to obtain a hydrothermal product;

[0033] 2) Ball mill the hydrothermal product and silane coupling agent (silane coupling agent Kh560) at a molar ratio of 1:0.1 (the number ratio of large balls to small balls is 2:0.8, and the mass ratio of grinding balls to materials is 10:2, rotating speed is 800rpm, ball milling time is 40min) to obtain modified hydrothermal product;

[0034] 3) Mix TPE (TEO), PVAC, talc, stearic acid, paraffin oil, diisononyl phthalate, silicon micropowder, modified hydrothermal product and oleic acid according to the ratio of 100:40:10:25:7 : 22:4:3:30 weight ratio, kneading at 200°C for 4 hours, extrusion molding to prepare TPE / PVAC composite crisp...

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PUM

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Abstract

The invention discloses a TPE/PVAC composite fresh-keeping box cover and a preparation method thereof. The preparation method comprises: 1) mixing a soluble aluminum salt, a soluble magnesium salt, a soluble zirconium salt, urea and water into a salt solution, and then carrying out hydrothermal reaction to obtain a hydrothermal product; 2) subjecting the hydrothermal product to ball milling in a silane coupling agent to obtain a modified hydrothermal product; and 3) subjecting TPE (thermoplastic elastomer), PVAC (polyvinyl acetate), talcum powder, stearic acid, paraffin oil, diisononyl phthalate, silica powder, the modified hydrothermal product and oleic acid to mixing, and performing molding so as to obtain the TPE/PVAC composite fresh-keeping box cover. The TPE/PVAC composite fresh-keeping box cover has excellent high-temperature resistance, and the preparation method also has the advantages of simple process and easily available raw materials.

Description

technical field [0001] The invention relates to a fresh-keeping box cover, in particular to a TPE / PVAC composite fresh-keeping box cover and a preparation method thereof. Background technique [0002] The lid of the crisper is an important component of the crisper, which not only determines the sealing performance of the crisper, but also directly affects the freshness of the crisper. At present, the lid of the crisper is mainly made of polymer, which can basically meet the market demand, but in the process of use, it is often found that the crisper cannot be sealed immediately after filling the high-temperature food, otherwise it will cause the deformation of the crisper Therefore, it can be seen that there is still a certain deficiency in the high temperature resistance of the current crisper lid. Contents of the invention [0003] The object of the present invention is to provide a TPE / PVAC composite fresh-keeping box cover and a preparation method thereof. The TPE / PVA...

Claims

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Application Information

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IPC IPC(8): C08L53/02C08L23/00C08L75/04C08L31/04C08L91/06C08K13/06C08K9/06C08K3/34C08K5/09C08K5/12C08K3/36C08K3/22
CPCC08L53/02C08K2003/2227C08K2201/014C08L23/00C08L2201/08C08L2205/03C08L2207/04C08L31/04C08L91/06C08K13/06C08K9/06C08K3/34C08K5/09C08K5/12C08K3/36C08K3/22
Inventor 钱万水
Owner ANHUI YUEERWEI PLASTIC MACHINE CO LTD
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