Nylon film and method for preparing same

A technology of nylon film and nylon resin, which is applied in the field of nylon film and its preparation, can solve the problems of certain pollution and complex synthesis process, and achieve high gas barrier properties, excellent tensile strength and puncture strength, and broad industrial application prospects Effect

Inactive Publication Date: 2017-07-07
宁波福天新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The current resin chips for the production of nylon films are basically made of petroleum derivatives as raw materials. For example, the two varieties of nylon 6 and nylon 66 with the largest market share in the nylon market, their raw materials caprolactam and adipic acid are obtained through benzene hom

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0052] Example 1. Preparation of nylon 56

[0053] The 50-liter enamel salt-forming kettle was vacuumed and filled with nitrogen to replace the air three times, and protected with nitrogen. 30kg of pure water was added to the salt-forming kettle, and then 12.46kg of pentamethylenediamine (purchased from Shandong Kaisai, including Renewable organic carbon according to ASTM D6866 standard, purity 99.56% by gas phase normalization method), start stirring, add 17.64kg adipic acid (purchased from Liaoning Petrochemical), and then add 6g antioxidant H10 (Bruggolen H10 Geman Company) to prepare nylon salt aqueous solution.

[0054] Replace the air in a 100-liter polymerization vessel (K / SY166-2007 type) with nitrogen, and transfer the nylon salt solution to the polymerization vessel. The temperature of the oil bath rises to 230°C. When the pressure in the vessel rises to 1.73Mpa, the exhaust starts. When the temperature in the kettle reaches 265°C, vacuumize to -0.06Mpa (vacuum gauge pre...

Example Embodiment

[0055] Example 2. Preparation of nylon 56

[0056] Except that the addition amount of pentamethylenediamine in Example 1 was adjusted to 12.54 kg, the same operation as in Example 1 was performed. Nylon 56 was prepared with a reduced viscosity of 160ml / g.

Example Embodiment

[0057] Example 3 Preparation of nylon 56

[0058] Except that the amount of pentamethylene diamine added in Example 1 was adjusted to 12.68 kg, the same procedure was performed as in Example 1. Nylon 56 was prepared with a reduced viscosity of 200ml / g.

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PUM

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Abstract

The invention discloses a nylon film. Raw materials for the nylon film include nylon resin prepared from pentamethylene diamine and aliphatic dibasic acid. At least one of the pentamethylene diamine and the aliphatic dibasic acid is prepared by the aid of biological processes. The invention further discloses a method for preparing the nylon film. The nylon film and the method have the advantages that the thickness of the biaxially oriented nylon film ranges from 8 micrometers to 12 micrometers, the nylon film is high in gas barrier property, flexibility and tear resistance and excellent in tensile strength, puncture strength, oil resistance and resistance to different types of grease, can be applied to high-temperature boiling bags, vacuum packages for frozen meat, packaging bags for fresh meat, packaging bags for foods with cheese aroma and packaging cover materials, and further can be compounded with PET (polyethylene terephthalate), PE (polyethylene) and PP (polypropylene) resin and the like to prepare multilayer films, and accordingly the nylon film and the method have broad industrial application prospects.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a nylon film and a preparation method thereof. Background technique [0002] Biaxially stretched nylon film has various excellent physical and chemical properties that many other films do not have, such as: high gas barrier and good oil barrier performance, which can block various gases, including oxidizing gases such as oxygen, from penetrating into the film And the unique smell of the items in the packaging bag leaks out of the film, preventing the items in the packaging bag from being oxidized and degraded or changing the taste, and preventing the oil in the packaging bag from seeping out to pollute other items and the environment. Foods packaged with BOPA film have a longer shelf life than other products. The resin film is more than doubled in length. Stretch nylon film also has good puncture resistance and a wide range of temperature resistance, especi...

Claims

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Application Information

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IPC IPC(8): C08L77/02C08G69/26B29C69/02B29C47/92B29B13/06B29K77/00B29C48/92
CPCC08L77/02B29B13/06B29C48/0018B29C48/08B29C48/92B29C2948/92704B29K2077/00C08G69/26C08J3/226C08J5/18C08J2377/02C08J2477/02C08L2203/16C08L2205/025C08K3/36
Inventor 杨荣
Owner 宁波福天新材料科技有限公司
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