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Preparation method and application of PBAT modified material

A modified material and modified technology, which is applied in the field of PBAT modified materials and the preparation of modified materials, can solve the problems of decreased mechanical properties, difficult control of product durability, etc., achieve soft texture, bright surface gloss, and expand the scope of application Effect

Inactive Publication Date: 2016-07-27
江西禾尔斯环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It may be used in injection molding after blending PBAT and thermoplastic starch TPS. Although the cost is reduced after adding thermoplastic starch TPS, the mechanical properties drop a lot, the durability of the product is difficult to control, and it is also a harder product.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Each component is by weight percentage as follows: PBAT-TH801T (Lanshan Tunhe) 95.4%; Multi-hydroxyl ligand transition zinc compound 1.0% (such as [Zn 2 L 2 (H 2 0) 2 ]); divalent ester 1.8%; antioxidant B215 0.3%; acyl tri-n-butyl citrate (ATBC) 0.5%, aluminum stearate 0.5% and epoxidized soybean oil 0.5%. After mixing evenly, the PBAT modified material is prepared by parallel twin-screw extrusion modification and granulation at 90-150°C.

Embodiment 2

[0019] The weight ratio of each component is as follows: PBAT-Ecoflex (BASF) 96.8%; compound of multi-hydroxyl ligand transition metal iron 0.6% (such as [Fe 2 L 2 (SO 4 ) 2 ]); dibasic acid ester 0.6%; PPA0.1% (fluorine-containing compound); epoxidized soybean oil 0.5%; antioxidant 168 and 1010 compound 0.4%; zinc stearate 0.5%; monoglyceride 0.5% %. After mixing evenly, the PBAT modified material is prepared by parallel twin-screw extrusion modification and granulation at 95-165°C.

Embodiment 3

[0021] The components are in the following weight ratio: PBAT-(TH804-2 Lanshan Tunhe) 96.3%; polyhydroxyl ligand transition metal cobalt compound 0.8% (such as [Co 2 L 2 ]0.5CH 3 OH); mixed dibasic acid ester 1%; EP-13A-B (provided by Shandong Jiqing Chemical Industry) 0.5%; antioxidant B2250.3%;, G302A-PVC composite lead salt 0.6%; acetyl citrate tri-n-butyl Ester (ATBC) 0.5%. After mixing evenly, the PBAT modified material is prepared by parallel twin-screw extrusion modification and granulation at 90-160°C.

[0022] The injection molding process flow of the PBAT modified material for manufacturing flexible plastic products can refer to the traditional injection molding process flow, which is simply expressed as follows:

[0023] 1. Feeding: Add PBAT modified material (organic and inorganic toner or liquid color paste can also be added as needed) into the hopper of the injection molding machine, and cover the hopper;

[0024] 2. Mold loading: select the product mold: the...

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PUM

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Abstract

The invention discloses a preparation method of a PBAT modified material. The PBAT modified material is prepared by the following steps: proportionally and uniformly mixing 94-97% of PBAT, 0.5-1% of polyhydroxy ligand transition metal compound, 0.5-2% of flow modifier, 0.1-0.5% of modifying aid, 0.2-0.5% of antioxidant, 0.5-1% of heat stabilizer and 0.5-1% of lubricant all by weight; and performing extrusion granulation through parallel twin screws. The PBAT modified material is biodegradable, and the product is safe and nontoxic and easy to clean; the abandoned product does not influence the environment; the product has soft texture and bright surface gloss; quick and large-scale production of the flexible injection moulding products of PBAT is realized; and therefore, the PBAT material is not limited to film bag products, and the application range of the PBAT material is expanded. The PBAT modified material is particularly suitable for the forks, spoons and teethers of infants, various soft injection moulding products and some silica gel substitutes.

Description

technical field [0001] The invention belongs to the field of polymer degradable materials, and in particular relates to a PBAT modified material, a preparation method of the modified material and a new application of injection molded products. Background technique [0002] Environmental issues have always been the focus of widespread concern in various countries. The rapid development of petrochemical plastics has caused air and water pollution. A series of factors such as energy shortage and climate warming have been threatening the human living environment. As the largest developing country in the world, China's environmental pollution problem is also becoming more and more serious. Therefore, the development of various low-cost materials that are biodegradable after being discarded has become a research hotspot in various countries. PBAT is a copolymer of butylene adipate and butylene terephthalate, which is a thermoplastic biodegradable material. Combining the charact...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L91/00C08L27/06C08K5/00C08K5/11C08K5/098C08K5/103C08K5/10
CPCC08L67/02C08L2201/06C08L2201/08C08L91/00C08K5/00C08K5/11C08K5/098C08K5/103C08L27/06C08K5/10
Inventor 高婉琴翟国强邵羽静文杨洋
Owner 江西禾尔斯环保科技有限公司
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