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Blend of PPC and PBAT and preparation method thereof

A blend and cold mixing technology, applied in the field of PPC and PBAT blends and preparation, can solve the problems of pure PPC application difficulty, PPC forming agglomerates, affecting storage and transportation, etc. , the effect of simple and easy-to-obtain raw materials

Inactive Publication Date: 2011-11-23
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 200 grams, joins respectively in the high-speed mixer, under the situation that cold mixing temperature is 0 ℃, stirs 5 minutes, the rotating speed of mixer can be 1500 rev / min; Out of granulation, the heating temperature in the highest heating zone is 170°C. Use the obtained pellets to test the sticky temperature of the pellets in the oven, and use the obtained pellets to prepare samples in the injection machine according to the requirements of GB / T 17037-1997, and then according to GB / T 1040-2006 According to the requirements of GB / T 2918-1998, the tensile performance test is carried out, and the test results are recorded.

Embodiment 2

[0018] Take by weighing 2000 grams of PPC (same as Example 1), 30 grams of maleic anhydride, 50 grams of lipophilic modified light calcium carbonate (particle size is 1250 orders), 10 grams of epoxy soybean oil, and 600 grams of PBAT, add respectively In the high-speed mixer, stir for 6 minutes at a cold mixing temperature of 5°C, and the rotation speed of the mixer can be 1000 rpm; release the cold mixture, extrude and granulate with a twin-screw extruder, and heat the temperature at the highest heating zone It is 171°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 2000 grams of PPC (with embodiment 1), 20 grams of maleic anhydride, 100 grams of light calcium carbonate (particle size is 1250 orders), 20 grams of stearic acid, and 1000 grams of PBAT, join respectively in the high-speed mixer, Stir for 10 minutes at a cold mixing temperature of 10°C, and the speed of the mixer can be 800 rpm; release the cold mixture, extrude and granulate with a single-screw extruder, and the heating temperature in the highest heating zone is 172°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 and PBAT and a preparation method thereof. The blend consists of PPC, PBAT, 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 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 mixed 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 and PBAT and a preparation method thereof, 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 c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L69/00C08L67/02C08K13/06C08K9/04C08K3/26C08K5/09C08K5/1515B29B9/06B29C47/92B29C48/92
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海山李成军牛丽刚白景峰
Owner INNER MONGOLIA MENG XI HIGH TECH GRP CO LTD
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