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PPC (poly(propylene carbonate)), PBAT (poly(butylene adipate/terephthalate)) and PBS (poly(butylene succinate)) blend and preparation method

A blend and cold mixing technology, which is applied in the field of PPC, PBAT and PBS blends and preparation, can solve problems such as difficulties in the application of pure PPC, affecting storage and transportation, and sticking of PPC, achieving improved mechanical properties, Raw materials are simple and easy to obtain, and the effect of common equipment

Inactive Publication Date: 2010-06-16
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, PBAT is 100 grams, and PBS is 100 grams, respectively join in the high-speed mixer, under the situation that the cold mixing temperature is 0 ℃, stir for 5 minutes, the rotating speed of the mixer can be 1500 rev / min; The screw extruder is extruded and granulated, and the heating temperature in the highest heating zone is 171°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 results sh...

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, PBAT is 200 grams, PBS is 400 grams, respectively join in the high-speed mixer, stir 6 minutes under the situation of 5 ℃ of cold mixing temperature, the rotating speed of mixer can be 1000 revs / min; The heating temperature of the highest heating zone is 173°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 order) 100 grams, stearic acid 20 grams, PBAT is 500 grams, PBS is 500 grams, add respectively Put it into a high-speed mixer, stir for 10 minutes at a cold mixing temperature of 10°C, and the rotation speed of the mixer can be 800 rpm; release the cold mixture, extrude and granulate with a twin-screw extruder, and heat the temperature at the highest heating zone It is 174°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 PPC (poly(propylene carbonate)), PBAT (poly(butylene adipate / terephthalate)) and PBS (poly(butylene succinate)) blend and a preparation method. The blend is formed by PPC, PBAT, PBS, a blocking agent, lubricant and modified light calcium carbonate, and the preparation method comprises the following steps of: cooling-mixing the PPC, the PBAT, the PBS, the blocking agent, the lubricant and the modified light calcium carbonate in a high-speed mixer under a condition with the temperature not higher than 35 DEG C, and extruding a cooling-mixed material by a screw extruder for pelleting, wherein the temperature for pelleting is not higher than 200 DEG C. The invention has the advantages that the method has simple process, common equipment, and suitability for industrialization production; meanwhile, raw materials used in the method are simple and easy to obtain and can be easily bought in a market; and the blend processed out by the method has greatly increased temperature of sticky clotting higher than that of a pure PPC and greatly improved mechanical performance of the blend larger than that of the pure PPC, broadens the application range of the pure PPC and is completely biodegraded.

Description

Technical field: [0001] The invention relates to a blend of PPC, PBAT and PBS 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 carb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L67/02C08K9/00C08K3/26C08K5/09C08K5/1515
Inventor 刘埃林汪英杰张光军陈有业高振勇郭颂旗李世英蒙昊王红霞武占存徐晓燕黄云生李云飞
Owner INNER MONGOLIA MENG XI HIGH TECH GRP CO LTD
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