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Blend of PPC and PLA and preparation method thereof

A blend and cold mixing technology, which is applied in the field of PPC and PLA blends and preparation, can solve problems such as difficulties in the application of pure PPC, affecting storage and transportation, and sticking of PPC, so as to improve mechanical properties and increase temperature , the general effect of equipment

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 (produced by Inner Mongolia Mengxi High-tech Group Company, glass transition temperature is 35 ℃), 20 grams of maleic anhydride, and hydrophobic white carbon black is selected to be used for filling rubber commonly used common white carbon black (the present invention uses by Tonghua Produced by Shuanglong Chemical Group, the specific surface area is 100-190m 2 The white carbon black of TB2 type) 20 grams of / g, stearic acid 2 grams, PLA is 200 grams, joins in the high-speed mixer respectively, stirs 5 minutes under the situation that cold mixing temperature is 0 ℃, the rotating speed of mixer can be 1500 rpm; release the cold mixture, extrude and granulate with a twin-screw extruder, and 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. At the same time, use the obtained pellets to prepare samples in the injection machine according to the r...

Embodiment 2

[0018] Take by weighing 2000 grams of PPC (same as Example 1), 30 grams of maleic anhydride, 50 grams of hydrophobic white carbon black, 10 grams of epoxy soybean oil, and 500 grams of PLA. Stir for 6 minutes under the condition of ℃, and the rotating speed of the mixer can be 1000 rpm; release the cold mixture, extrude and granulate with a single-screw extruder, and the heating temperature in the highest heating zone is 172 ℃. 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] Weigh 2000 grams of PPC (same as Example 1), 20 grams of maleic anhydride, 100 grams of hydrophobic white carbon black, 20 grams of stearic acid, and 800 grams of PLA. Under the condition of stirring for 10 minutes, the rotation speed of the mixer can be 800 rpm; release the cold mixture, extrude and granulate with a twin-screw extruder, and the heating temperature in the highest heating zone 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 a blend of PP and PLA and a preparation method thereof. The blend consists of PPC, PLA, an end-capping reagent, a lubricating agent and hydrophobic white carbon black. The preparation method comprises the following steps of: carrying out cold mixing on the PPC, the PLA, the end-capping reagent, the lubricating agent and the hydrophobic white carbon black 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 blend processed by the method has transparent granules, the temperature of pastiness caking blocks of the blend 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 PLA 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 ca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L69/00C08L67/04C08K13/02C08K3/04C08K5/09C08K5/1515B29B9/06B29C47/92B29C48/92
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李成军海山
Owner INNER MONGOLIA MENG XI HIGH TECH GRP CO LTD