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Polylactic acid alloy membrane and application thereof

A technology of alloy film and polylactic acid, which is applied in the direction of coating, etc., can solve the problems of unfavorable environmental protection, toxicity of diisocyanate, and affecting the effect of diisocyanate chain extension, etc., to promote wide application, simple process method, and improve oxygen barrier performance Effect

Active Publication Date: 2013-09-25
常州博疆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

Due to the toxicity of diisocyanate, it is not conducive to environmental protection, and the carboxyl and moisture contained in polyvinyl alcohol and polylactic acid resin will also affect the chain extension effect of diisocyanate

Method used

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  • Polylactic acid alloy membrane and application thereof
  • Polylactic acid alloy membrane and application thereof
  • Polylactic acid alloy membrane and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～9

[0036] Table 1 shows the formulations and performance evaluations of the polylactic acid alloy film Examples 1-9. After preliminarily mixing the components shown in Table 1, extrude with a twin-screw at a temperature of 190°C, water-cool and pelletize; after the particles are dried, extrude and blow mold with a single-screw extruder at 180°C. A thin film with a thickness of 20 μm was prepared.

[0037] Wherein, the content of each formula is parts by weight, and various components are as follows:

[0038] (A) Polylactic acid resin

[0039] A1: Natureworks, USA, 4032D

[0040] A2: Natureworks, USA, 4060D

[0041] (B) Polyvinyl alcohol resin

[0042] B1: Shanghai Petrochemical, polymerization degree 1700, alcoholysis degree 99%

[0043] B2: Shanghai Petrochemical, polymerization degree 1700, alcoholysis degree 88%

[0044] (C) Compatibilizer

[0045] C1: BASF Corporation, Joncyrl ADR4368, multi-epoxy functional polymer

[0046] C2: Sinopharm Group, maleic anhydride graft...

Embodiment 10～17

[0061] Table 2 shows that on the basis of A1 / A2 / B2 / C2 / D2 / D3 being 35 / 35 / 30 / 5 / 0.2 / 0.2 parts by weight in Table 1, after further adding the components shown in Table 2 The formulation and performance evaluation of the embodiments 10-17. The components shown in Table 2 were preliminarily mixed, extruded with a twin-screw at an extrusion temperature of 190° C., and cast to prepare a film with a thickness of 20 μm.

[0062] Wherein, the content of each formula is parts by weight, and various components are as follows:

[0063] (E) Plasticizer

[0064] E1: Sinopharm Group, n-Butyl Acetyl Citrate

[0065] E2: Sinopharm Group, glycerin

[0066] E3: Sinopharm Group, polyethylene glycol, number average molecular weight 1000

[0067] (F) toughening agent

[0068] F1: BASF Corporation, Ecoflex7011, polybutylene terephthalate adipate

[0069] F2: Japan Showa Polymer Co., Ltd., Bionolle3001, polybutylene succinate adipate

[0070] F3: DuPont, Biomax Strong100, ethylene-acrylic acid c...

Embodiment 18～22

[0077] Table 3 shows that on the basis of A1 / A2 / B2 / C2 / D2 / D3 being 35 / 35 / 30 / 5 / 0.2 / 0.2 / parts by weight respectively in Table 1, adding Table 2 is respectively 20 / 10 After adding E3 / F1 in parts by weight, the formulations and performance evaluations of Examples 18-22 were further added according to the components shown in Table 3. The components shown in Table 3 were preliminarily mixed, extruded by twin-screws at an extrusion temperature of 190° C., and cast to prepare a film with a thickness of 20 μm.

[0078] Wherein, the content of each formula is parts by weight, and various components are as follows:

[0079] (G) filler

[0080] G1: Zibo Shengxu Industry and Trade Co., Ltd., micron grade calcium carbonate, D50=2~2 microns.

[0081] G2: Ruicheng Xintai Nano Materials Co., Ltd., nano-scale calcium carbonate, D50=15-25 nm.

[0082] G3: Glycerin surface-modified nano-scale calcium carbonate, self-made, 1kg G2 and 100g glycerin were added to the reaction kettle, heated to 80°...

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Abstract

The present invention discloses a polylactic acid alloy membrane, which comprises polylactic resin, polyvinyl alcohol resin and a bulking agent, wherein the three are in parts by weight of 1to 99 parts, 1 to 99 parts and 0.05to 5 parts respectively, with the total account of polylactic resin and polyvinyl alcohol resin in parts by weight of 100 parts. By the invention, the oxygen barrier property of the polylactic acid alloy membrane is effectively improved under the premise of keeping the membrane completely biodegradable and providing the membrane high mechanical strength. The technology method provided by the invention is easy with low cost, and is able to effectively promote widespread use of the environmentally friendly polylactic acid products.

Description

technical field [0001] The invention relates to a polylactic acid film, in particular to a biodegradable polylactic acid alloy film with gas barrier properties. Background technique [0002] The wide application of petroleum-based plastic products, especially plastic packaging materials, has brought a lot of convenience to human life, but commonly used plastics such as polyethylene, polypropylene, polyethylene terephthalate and other materials mainly come from petroleum. With the increasing scarcity of petroleum resources, the source of raw materials for commonly used olefin-based polymer materials will face great challenges. In addition, the treatment of petroleum-based polymer materials after application is also a very big problem, especially plastic packaging materials, due to their short application cycle and large dosage, the pollution to the environment is more serious. In the prior art, plastic waste is mainly disposed of by incineration or burial. Incineration will ...

Claims

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Application Information

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IPC IPC(8): C08L67/04C08L29/04C08L51/06C08L51/00C08L33/10C08L23/08C08K13/02B29C47/92B29C49/00B29C41/00B29C48/92
CPCB29C48/08B29C48/022
Inventor 春胜利舒贵松刘祥文
Owner 常州博疆新材料科技有限公司
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