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Novel biodegradable master batch and preparation method thereof

A biodegradable and masterbatch technology, applied in the field of new biodegradable masterbatch and its preparation, can solve the problems of lack of interfacial bonding ability of biodegradable masterbatch, decreased mechanical properties of plastic products, unsatisfactory dispersion, etc.

Active Publication Date: 2012-02-22
肖同剑
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] To sum up, the preparation of masterbatch usually simply uses surface treatment agent to solve the problem of poor interfacial bonding between plastic matrix and additives. The use of this kind of masterbatch often leads to the decline of mechanical properties of final plastic products and unsatisfactory dispersion. Poor modification effect
Therefore, this area lacks a biodegradable masterbatch with good dispersion effect and good interfacial binding ability

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0107] In a specific embodiment of the present invention, the preparation method of biodegradable masterbatch of the present invention, it comprises the steps:

[0108] (a) providing the components described in the present invention;

[0109] (b) performing in-situ polymerization on the components to obtain the masterbatch.

[0110] In a specific embodiment of the present invention, in the step (b), the in-situ polymerization and the preparation of the masterbatch are carried out synchronously in the extrusion equipment, or

[0111] In the step (b), firstly, the components are prepolymerized, and then extruded to obtain the masterbatch.

[0112] Specifically, prepolymerization is carried out in a reactor.

[0113] advantage

[0114]The invention relates to a novel preparation method of a biodegradable masterbatch and a corresponding process. The present invention is characterized in that various functional additives or their mixtures are fully mixed in the biodegradable mo...

Embodiment 1

[0119] [Example 1] Preparation of biodegradable masterbatch with high calcium sulfate content.

[0120] Using the first process route of the present invention, under the protection of dry nitrogen, first add 8 kilograms of lactide into the high-mixer, start stirring, and add 100 grams of stannous octoate, 200 grams of ADR4368C, TNPP / Irgafos168 successively after 1 minute After each 150 grams are transferred to the high-speed mixer, mix for another 3 minutes, and finally add 11.88 kilograms of calcium sulfate and mix for 3 minutes, and adjust different mixing speeds so that the mixing is sufficient and uniform. The mixed materials are metered into the extruder through the feeding hopper, melted and extruded, hot-cut and granulated to obtain a biodegradable masterbatch with a calcium sulfate content of 60%. Masterbatch and monomer polymerization are carried out in one step, which not only saves cost, but also directly prepares masterbatch with lactide monomer, which has better f...

Embodiment 2

[0121] [embodiment 2] prepare the biodegradable masterbatch of high carbon black content

[0122] Using the first process route of the present invention, under the protection of dry nitrogen, at first 88% lactic acid is removed free water in the reactor to obtain 9.0 kilograms of pure L-lactic acid, then add 120 grams of pentaerythritol, 150 grams of stannous octoate and 400 Put 1010 / 168 grams of antioxidant into the reactor, after fully mixing, add 11.0 kg of carbon black into the reactor through a special pipeline, raise the temperature to 190 degrees Celsius, and keep it under a certain vacuum to continue the reaction for 10 hours. The reacted materials are melted and extruded through an extruder connected to the reaction kettle, and eagerly cut and granulated to obtain an antistatic biodegradable masterbatch with a carbon black content of 55%. Typical extruder temperature: 80··220 degrees Celsius, screw speed 50··100rpm.

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Abstract

The present invention provides a biodegradable master batch and a preparation method thereof. The biodegradable master batch is prepared by in situ polymerization according to the following formula, wherein the formula comprises the following components, by weight, 10-80 parts of a biodegradable monomer or a prepolymer, 0.01-5 parts of a catalyst, 0.05-5 parts of a reaction activator, 0.1-5 parts of a heat stabilizer, 0-80 parts of a flame retardant, 0-80 parts of a filler, 0-80 parts of an antistatic agent, 0-80 parts of a pigment, 0-80 parts of a foaming agent and 0-5 parts of a surface coupling agent. According to the present invention, the biodegradable master batch with a good dispersion effect and good interface bonding ability, and the preparation method thereof are provided.

Description

technical field [0001] The invention relates to a masterbatch and its preparation, in particular to a novel masterbatch for biodegradation and its preparation method and process. Background technique [0002] Plastic masterbatch (Master Batch) includes a variety of functional masterbatches, such as filler masterbatches, flame retardant masterbatches, antistatic masterbatches and color masterbatches. The original plastic masterbatch is just a premix of filler, carrier resin and a small amount of necessary additives. With the development of the plastics industry, people hope to have a filler that can maintain or further improve the performance of plastic products when the amount added is larger. Therefore, on the one hand, the filler is activated and modified by using a coupling agent or a surfactant; On the one hand, modifiers and various additives are applied to make it have better performance. At this time, plastic masterbatches are not limited to filler masterbatches for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/08C08G63/06C08G63/20C08G63/16C08G63/78C08K13/02C08K3/30C08K3/04C08K3/26C08K3/22
CPCC08L101/16C08J2300/16C08L2310/00C08J9/0023C08J9/0066C08J9/10C08J2201/024C08K5/005C08K5/0066C08K2003/3045C08K3/013C08K3/017C08L67/04C08L63/00
Inventor 侯连龙
Owner 肖同剑
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