Polylactic resin composition for blowing transparent heat-resisting bottle

A technology of polylactic acid resin and composition, applied in the field of polylactic acid resin composition, can solve the problems of affecting the light transmittance of materials, polylactic acid is not suitable for bottle blowing process, application limitation, etc., and achieves high heat resistance and high crystallinity. degree requirements and the effect of increasing compatibility

Active Publication Date: 2017-05-10
ZHEJIANG HISUN BIOMATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the polylactic acid composite material has good heat resistance and light transmittance, because it needs an external nucleating agent and an anti-hydrolysis stabilizer to achieve the corresponding performance, the introduction of an external nucleating agent will affect the material. The light transmittance, especially these polylactic acids are not suitable for the blowing process, so its application is still limited

Method used

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  • Polylactic resin composition for blowing transparent heat-resisting bottle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Styrene-butadiene-styrene block copolymer (SBS) is dropped into the twin-screw extruder, wherein, in SBS, the B segment content is 50mol%, and then, 5wt% glycidyl methacrylate (GMA ), 0.5wt% initiator dicumyl peroxide and 0.1wt% crosslinking agent triallyl isocyanurate (TAIC) are mixed and dropped into the twin-screw extruder, and the temperature is controlled to be 200°C Extrude for granulation; then, put the product and 5wt% poly D-lactic acid into another twin-screw extruder again and control the temperature at 220°C to extrude and granulate to obtain the corresponding elastomer with core-shell structure , that is, the corresponding toughening modifier T1.

Embodiment 2

[0022] Styrene-isoprene-styrene block copolymer (SIS) is dropped into twin-screw extruder, wherein, in SIS, the content of stage I is 80mol%, and then, 1wt% glycidyl methacrylate ( GMA), 0.1wt% initiator dicumyl peroxide and 3.0wt% crosslinking agent triallyl isocyanuric acid ester (TAIC) are mixed and dropped into the twin-screw extruder, and the control temperature is 160 ℃ Then, put the product and 30wt% poly D-lactic acid into another twin-screw extruder again and control the temperature at 180°C to extrude and pelletize to obtain the corresponding elastic core-shell structure. body, that is, the corresponding toughening modifier T2.

Embodiment 3

[0024] Styrene-butadiene-styrene block copolymer (SBS) is dropped into the twin-screw extruder, wherein, the B segment content is 70mol% in the SBS, and then, 3wt% glycidyl methacrylate (GMA ), 0.3wt% initiator dicumyl peroxide and 1.0wt% crosslinking agent triallyl isocyanurate (TAIC) are mixed and dropped into the twin-screw extruder, and the temperature is controlled to be 180°C Extrude for granulation; then, put the product and 10wt% poly D-lactic acid into another twin-screw extruder again and control the temperature at 220°C to extrude and granulate to obtain the corresponding elastomer with core-shell structure , that is, the corresponding toughening modifier T3.

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Abstract

The invention relates to a polylactic resin composition for blowing a transparent heat-resisting bottle and belongs to the technical field of high molecular materials. Aiming at solving the problems of an existing process of blowing a bottle by utilizing polylactic acid that rapid crystallization cannot be realized and the strength is poor, the invention provides the polylactic resin composition for blowing the transparent heat-resisting bottle; the composition is prepared from the following components in parts by weight: 94 to 98 parts of polyL-lactic acid, 0.1 to 1.0 part of inorganic filling and 1.0 to 5.0 parts of a toughening modifier; the toughening modifier is an elastomer with a core-shell structure; a core layer is polybutadiene or polyisoprene; a shell layer is polystyrene or polyD-lactic acid. The polylactic resin composition provided by the invention can guarantee relatively high crystallization degree requirements and realizes high heat resistance; the polylactic resin composition can be applied to products of a bottle blowing process; the polylactic resin composition also has the performance of high light transmittance.

Description

technical field [0001] The invention relates to a polylactic acid resin composition for blowing transparent heat-resistant bottles, belonging to the technical field of polymer materials. Background technique [0002] Polylactic acid is a degradable polymer material starting from plant resources. It can be molded using traditional plastic processing equipment. After use, the product can be decomposed into environmentally friendly materials after composting or landfilling Harmful small molecules. During the entire life cycle of the polylactic acid material, no new carbon dioxide is produced, which is a closed carbon cycle system. Therefore, polylactic acid is considered to be a real environmentally friendly plastic. [0003] Polylactic acid can be blown by two-step method of injection and blowing in the blow molding machine, which can replace PET bottles. Like PET, due to the low glass transition temperature and slow crystallization rate of polylactic acid, the crystallinit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L51/00C08K3/34C08F287/00C08F220/32
CPCC08F287/00C08L67/04C08L2201/08C08L2201/10C08L2205/025C08L2205/03C08L2205/24C08L2207/53C08L51/006C08K3/34C08F220/325
Inventor 边新超刘焱龙孙彬项盛冯立栋粱伟朱荣华
Owner ZHEJIANG HISUN BIOMATERIALS
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