Blend of PPC, PBAT, PCL and PLA and preparation method thereof

A blend and cold mixing technology, which is applied in the field of PPC and PBAT, PCL and PLA blends and preparations, can solve the problems of pure PPC application difficulties, affecting storage and transportation, PPC sticking blocks, etc., to achieve strong toughness , fast biodegradation speed, easy processing effect

Inactive Publication Date: 2010-06-09
INNER MONGOLIA MENG XI HIGH TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the temperature is above Tg, PPC will form a cohesive block, which affects its storage and transportation; when the temperature is below Tg, PPC is in a glassy state and is brittle, so the application of pure PPC is very difficult.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Take by weighing 2000 grams of PPC (manufactured by Mengxi High-tech Group Company, glass transition temperature is 35 ℃), 20 grams of maleic anhydride, 20 grams of lipophilic modified light calcium carbonate (particle size is 800 mesh), 20 grams of stearic acid gram, PLA is 100 grams, PCL is 50 grams, PBAT is 50 grams, joins in the high-speed mixer, stirs for 5 minutes under the condition that cold mixing temperature is 0 ℃, the rotating speed of mixer can be 1500 rpm; The material is extruded and granulated with a twin-screw extruder, and the heating temperature in the highest heating zone is 173°C. Use the obtained pellets to test the sticky temperature of the pellets in the oven. At the same time, use the obtained pellets to prepare samples in the injection machine according to the requirements of GB / T17037-1997, and then according to GB / T 1040-2006 and According to the requirements of GB / T 2918-1998, the tensile performance test shall be carried out, and the test r...

Embodiment 2

[0018] Take by weighing PPC (with embodiment 1) 2000 grams, maleic anhydride 30 grams, lipophilic modified light calcium carbonate (particle size is 1250 orders) 50 grams, epoxy soybean oil 10 grams, PCL is 200 grams, PLA is 200 grams, PBAT is 200 grams, join in the high-speed mixer, under the situation that the cold mixing temperature is 5 ℃, stir for 6 minutes, the rotating speed of the mixer can be 1000 rpm; release the cold mixture, extrude with a single screw extruder Out of granulation, the heating temperature in the highest heating zone is 175°C. The sticky starting temperature and tensile properties were tested with the obtained pellets, and the test results were recorded (same as in Example 1).

Embodiment 3

[0020] Take by weighing PPC (with embodiment 1) 2000 grams, maleic anhydride 20 grams, light calcium carbonate (particle size is 1250 orders) 100 grams, stearic acid 20 grams, PCL is 100 grams, PLA is 500 grams, PBAT is Add 500 grams into a high-speed mixer, and stir for 10 minutes under the condition that the cold mixing temperature is 10°C. The rotating speed of the mixer can be 800 rpm; release the cold mixture, extrude and granulate with a twin-screw extruder, the highest The heating temperature in the heating zone is 176°C. The sticky starting temperature and tensile properties were tested with the obtained pellets, and the test results were recorded (same as in Example 1).

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Abstract

The invention relates to a blend of PPC, PBAT, PCL and PLA and a preparation method thereof. The blend consists of PPC, PBAT, PCL, PLA, an end-capping reagent, a lubricating agent and modified precipitated calcium carbonate. The preparation method comprises the following steps of: carrying out cold mixing on the PPC, the PBAT, the PCL, the PLA, the end-capping reagent, the lubricating agent and the modified precipitated calcium carbonate in a high-speed stirrer at the temperature not above 35 DEG C; and extruding and granulating cold mixing materials by a screw extruder, wherein the temperature of extruding and granulating is not more than 200 DEG C. With simple process method and common equipment, the invention is especially suitable for industrial production; meanwhile, the used materials are simple and easily obtained and can also be purchased in the market; the temperature of pastiness caking blocks of the blend processed by the method is greatly improved in comparison with pure PPC and the mechanical property of the blend is greatly improved in comparison with the pure PPC; and the blend widens the application range of the pure PPC and can be completely biodegraded.

Description

Technical field: [0001] The invention relates to a blend of PPC, PBAT, PCL and PLA and a preparation method, belonging to the field of polymer processing. Background technique: [0002] Environmental pollution is one of the urgent problems facing society today. Carbon dioxide is a waste gas produced in many industrial fields. It is discharged into the atmosphere, which not only pollutes the environment, but also wastes carbon resources. One of the raw materials for carbon dioxide-propylene oxide copolymer is carbon dioxide, which is copolymerized with carbon dioxide and propylene oxide. The reaction can fix carbon dioxide; at the same time, the obtained copolymer is a non-toxic, odorless, colorless solid with excellent barrier properties, and the copolymer has the characteristics of complete biodegradation, which can replace ordinary plastics to solve the "white pollution" problem, so it has Double environmental protection effect. Realizing the industrialized production of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L67/02C08L67/04C08K13/06C08K9/04C08K3/26C08K5/09C08K5/1515B29B9/06B29C47/92B29C48/92
CPCB29C48/04B29C48/92B29C2948/92704B29C2948/92895
Inventor 刘埃林汪英杰张光军陈有业高振勇蒙昊王红霞武占存徐晓燕黄云生李云飞海山牛丽刚
Owner INNER MONGOLIA MENG XI HIGH TECH GRP CO LTD
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