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A kind of uniform color high tenacity plastic film and its preparation process

A plastic film and high toughness technology, applied in the field of uniform color and high toughness plastic film and its preparation, can solve the problems of high moisture permeability, poor barrier property, moisture absorption, etc., and achieve high hydrophobicity and improve the effect of hydrophobic performance.

Active Publication Date: 2021-11-12
浙江永正包装有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a kind of uniform color high tenacity plastic film and preparation technology thereof, and this plastic film is to be prepared by hydrophobic polyamide material, because hydrophobic polyamide material is made of siloxane-based m-phenylene diisocyanate and ethylene glycol through Polymerization preparation, siloxane-based m-phenylene diisocyanate contains siloxane bonds, and the product generated after polymerization with ethylene glycol contains a large number of siloxane bonds, so that the surface of the prepared polyamide material uniformly contains a large amount of The siloxane bond improves the hydrophobicity of the polyamide material, thereby making the prepared polyamide plastic film have higher hydrophobicity, thereby effectively solving the problem that the existing polyamide plastic film has a poor barrier to water vapor. Problems with high moisture absorption and moisture permeability

Method used

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  • A kind of uniform color high tenacity plastic film and its preparation process
  • A kind of uniform color high tenacity plastic film and its preparation process
  • A kind of uniform color high tenacity plastic film and its preparation process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] DETAILED polyamide materials hydrophobic preparation as follows:

[0027] Step 1 Weigh 1mol acryloyl chloride was added 1L acetone solution was then added thereto 10g chloroplatinic acid hexahydrate mixed uniformly added thereto 1.02mL trimethoxysilane, the reaction was warmed to 50 deg.] C under reflux for 2-3h, then distilled under reduced pressure to give acid chloride siloxane group;

[0028] Step 2, the silicone-based acid chloride prepared in Step 1 was added 1mol autoclave, to which was then added 900mL of 3% concentration of sulfuric acid solution was added thereto while between 1mol5- hydroxy acid, the reaction was stirred at room temperature 14-15h, then filtered washing and drying, to give a siloxane diacid benzene;

[0029] Step 3, the silicone diacid benzene 100g prepared in Step 2 was added to 600mL thionyl chloride solution, stirring the reaction was warmed to 60-70 ℃ 8-10h, and then thionyl distillation under reduced pressure to remove unreacted sulfone, sil...

Embodiment 2

[0033] Specifically the polyamide material prepared as follows:

[0034] Step 1, 100g of isophthalic acid was added to 600mL thionyl chloride and heated to 60-70 deg.] C The reaction was stirred for 8-10h, and then thionyl chloride was distilled under reduced pressure to remove the unreacted benzene to obtain 5-hydroxy dichloride;

[0035]Step 4, the isophthaloyl chloride prepared in Step 3 was added to 100g of chloroform was added and dissolved with stirring autoclave, reactor temperature control is 8-12 deg.] C, and then slowly added 34g of sodium azide, stirred after 2-3h the reaction was slowly warmed to 60-90 deg.] C, and then rotary evaporated under reduced pressure and silica gel was added to the powder powder to a reaction vessel, and then to give m-phenylene diisocyanate passed through the column by petroleum ether;

[0036] Step 5, isophthaloyl diisocyanate prepared in Step 4 was added 100g of acetone, 41g of ethylene glycol was added thereto and the solution was heated ...

Embodiment 3

[0038] The specific preparation process of surface functionalized dyes is as follows:

[0039] ① weighed 1mol1,4- butanediol diglycidyl ether and 1L of acetone was added while the reaction vessel, to which was then added 1mol3- aminopropyl trimethoxysilane, stirring the reaction temperature was raised to 60-70 ℃ 2-3h, then Save pressure distillation, to obtain the modifier, the following reaction formula;

[0040]

[0041] Weigh 10g ② inorganic dyes added to the kettle, and then 100mL of water was added thereto with stirring mixed, followed by addition of 2.3g modifier prepared in step ① to the kettle and heated to reflux for 8-10h 90-100 deg.] C, then filtered washing and drying, to obtain surface-functionalized dye.

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Abstract

The invention discloses a plastic film with uniform color and high toughness, which comprises the following raw materials in parts by weight: 69-76 parts of hydrophobic polyamide material, 1-3 parts of glyceryl tristearate, 5-7 parts of surface functional dye, anti- 1-2 parts of oxygen agent, 3-4 parts of plasticizer. Plastic film of the present invention is to be prepared by hydrophobic polyamide material, because hydrophobic polyamide material is prepared by polymerizing by siloxane-based m-phenylene diisocyanate and ethylene glycol, contains siloxane bond in siloxane-based m-phenylene diisocyanate , the product generated after polymerization with ethylene glycol contains a large number of siloxane bonds crossed, so that the surface of the prepared polyamide material uniformly contains a large number of siloxane bonds, which improves the hydrophobicity of the polyamide material, and then makes The prepared polyamide plastic film has high hydrophobicity, thereby effectively solving the problems of the existing polyamide plastic film with poor water vapor barrier property, high moisture absorption and moisture permeability.

Description

Technical field [0001] The present invention belongs to the field of preparing plastic film, to a uniform color and high toughness plastic film preparation process. Background technique [0002] Nylon film is a very tough film, good transparency and good gloss, tensile strength, high tensile strength, also has good heat resistance, cold resistance, oil resistance and organic solvent resistance, abrasion resistance, excellent puncture resistance, and relatively soft, but its poor water vapor barrier property, moisture absorption, moisture permeability is large. [0003] Inorganic pigment because of its low price, light fastness, heat resistance, weatherability, solvent resistance, hiding power, is widely used in building materials, paints and coatings, plastics, ink and other industries, but there is no affinity between the inorganic pigment and polyurethane, and then which caused an inorganic dye staining of polyamide when dyeing difficult. Inventive content [0004] Object of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/04C08K5/103C08K9/10C08J5/18C08G18/77C08G18/32
CPCC08G18/3206C08G18/778C08J5/18C08J2375/04C08K5/103C08K9/10
Inventor 刘大刚江四胜
Owner 浙江永正包装有限公司
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