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Biomass-plastic and preparation method thereof

A technology of bio-based plastics and raw materials, applied in the field of bio-based plastics and its preparation, can solve the problems of poisonous and harmful, unsuitable for daily consumables and agricultural film, etc., achieve good performance, good molding and processing performance, simple and effective method Effect

Inactive Publication Date: 2013-01-16
WUHAN HUALI ENVIRONMENT PROTECTION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The Chinese patent application number is 200610024742.3, which discloses a plant fiber / PVC composite material and its manufacturing process. PVC is put into a high-speed mixer, and composite stabilizers, chlorinated polyethylene, and acrylic acid are added during the heating process. Anti-impact agent, plant fiber, add AC foaming agent when the material is cold mixed to 50°C, the obtained granules are extruded and granulated by an extruder, which has the unique woody feeling of logs, and is used in architectural decoration and indoor and outdoor packaging materials, but Not suitable for the production of daily consumables and agricultural film and other fields
And the plasticizer used in CN99102673.X is poisonous and harmful o-phthalic plasticizer

Method used

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  • Biomass-plastic and preparation method thereof
  • Biomass-plastic and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The first step, the preparation of natural polymer modified materials:

[0036] First, add 75 parts of wheat starch, 10 parts of linoleic acid, 10 parts of xylitol, 3 parts of polyethylene wax, and 2 parts of antioxidant 1010 into a special high-speed mixer, and stir at 150 ° C for 20 minutes , mix evenly, cool down and discharge.

[0037] Then the above materials are added into a special twin-screw extruder, and reacted and extruded at 80°C to obtain natural polymer modified material pellets.

[0038] The second step, the preparation of the mixed material of natural polymer modified material and PVC:

[0039] Add 50 parts of natural polymer modified material pellets prepared in the first step, 35 parts of PVC, 5 parts of EAA, 5 parts of epoxy soybean oil, and 5 parts of calcium stearate into a special high-speed mixer , stirred at 150°C for 20 minutes, mixed evenly, cooled and discharged.

[0040] Then, the above materials are added into a special twin-screw extrude...

Embodiment 2-4

[0042] The step of embodiment 2-4 is the same as embodiment 1, and difference is that raw material ratio, processing condition are different, as shown in table 1 below:

[0043]

[0044]

[0045] The performance of the mixed material of embodiment 2-4 gained natural macromolecule modified material and PVC, sees the following table 2:

[0046]

Embodiment 5-7

[0048] The step of embodiment 5-7 is the same as embodiment 1, and difference is that raw material ratio, processing condition are different, as shown in following table 3:

[0049]

[0050]

[0051] The performance of the mixed material of embodiment 5-7 gained natural macromolecule modified material and PVC, sees the following table 4:

[0052]

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Abstract

The invention relates to biomass-plastic and a preparation method thereof. The biomass-plastic is prepared by reacting and mixing the following raw materials by a two-step method: 75 to 95 weight parts of natural high polymer material, 1 to 20 weight parts of reactive type aid, 1 to 10 weight parts of physical plasticizer, 1 to 10 weight parts of lubricant and 0.1 to 5 parts of antioxidant. The two-step method comprises the following steps of: 1, preparing the natural high polymer modified material; and 2, preparing mixture of the natural high polymer modified material and PVC. The obtained biomass-plastic is white or faint yellow solid; the melting point is 120 to 180 DEG C; the melt flowing speed is 5 to 20g / 10min; the tensile strength is 10 to 20MPa; the elongation at break is 300 to 1,000 percent; the bending strength is 10 to 25MPa; charpy notched impact strength is 5 to 25kJ / m<2>; and the biomass-plastic is excellent in forming processing property, can be prepared into various products by extrusion, injection molding, blow molding, suction molding, and hot pressing methods on common equipment for processing plastic. Compared with the conventional PVC plastic product, the biomass-plastic has the advantages that 50 to 85 percent of non-renewable resources can be saved, and the biomass-plastic has obvious environment-friendly significance.

Description

technical field [0001] The invention relates to the technical field of bio-based plastic materials, in particular to a bio-based plastic prepared from natural polymer modified materials and polyvinyl chloride (PVC) and a preparation method thereof. Background technique [0002] PVC is mainly derived from petroleum, coal and natural gas. With the development of modern industry and commodity economy, these resources are consumed at an alarming rate, and the depletion of resources is approaching. At the same time, in the process of molding PVC into products, a large amount of plasticizers will be added, the most important of which is o-phthalic plasticizers, which can be added in an amount as high as 20% to 30%. Release, into the surrounding environment. [0003] Renewable resources such as starch, plant fiber, straw powder, and rape stalk powder are rich in sources and low in price. The bio-based plastics obtained after these materials are processed and modified and blended w...

Claims

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Application Information

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IPC IPC(8): C08L3/02C08L97/02C08L27/06B29C47/92B29C48/92
CPCB29C48/92B29C2948/92704B29C2948/92895
Inventor 张先炳白娟汤运章任超
Owner WUHAN HUALI ENVIRONMENT PROTECTION SCI & TECH
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