A kind of biodegradable plastic and preparation method thereof
A technology for biodegradable plastics and mixtures, applied in the field of biodegradable plastics and their preparation, can solve the problems of high cost, small adjustable lower limit of degradation rate, and great impact on performance, and achieve the effects of cost-effectiveness improvement, easy availability, and cost reduction
Active Publication Date: 2018-05-22
SHENZHEN LIANCHUANG TECHNOLOGY GROUP CO LTD
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Problems solved by technology
In the prior art, the existing method to increase the degradation rate of biodegradable plastics (such as PLA) is to adjust and control its degradation rate by grafting, but usually the cost is high, the performance has a great impact, and the lower limit of the degradation rate can be adjusted too small
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[0027] The content of the present invention will be further described in detail below. The concrete weight data of the various components of 8 comparative examples of biodegradable plastics involved in the present invention and the preferred embodiment of 12 different components of 20 groups are given in table 1; Take 2000g as the total mass basis of each part in the example. The fully biodegradable plastic in the present invention refers to medium and long chain PHA, and the monomer is C6-C14.
[0028] The embodiment of the present invention selects the grade of biodegradable plastic PHBHHx to be Ecoman EM10050; the glucose is the glucose of Suzhou Gaoneng Fine Chemical Technology Co., Ltd.; the starch is Xiwang cornstarch; the coupling agent is KH-550; the lubricant is calcium stearate And PE wax, the lubricant includes calcium stearate and 50% paraffin wax that account for the total mass percentage of the lubricant; the granulation equipment used is a Nanjing Ruiya screw d...
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A biodegradable plastic is prepared from completely biodegradable plastic, glucose, starch, a coupling agent and a lubricant. The completely biodegradable plastic is PHBHHx. The glucose is commercially available glucose. The starch includes plant starch of corn starch and modified starch. The coupling agent is an organic chromium complex, a silane coupling agent, a titanate coupling agent and an aluminate compound. The glucose and the starch which are weighed according to the mass ratio are put into a high mixing machine and are mixed for 10 minutes, then the coupling agent, the completely biodegradable plastic and the lubricant are sequentially added, and mixing is sequentially performed for 5 minutes; the mixed raw materials are put in a twin-screw pelletizer to prepare biodegradable plastic particles. The degradation rate of the biodegradable plastic is improved by adding the glucose and the starch in the biodegradable plastic, so that the degradation rate is controllable.
Description
technical field [0001] The invention relates to a biodegradable plastic and a preparation method thereof, in particular to adding glucose and starch to the biodegradable plastic, and synergistic use of various materials to accelerate the degradation rate of the biodegradable plastic so that the degradation rate is controllable. Background technique [0002] Biodegradable plastics refer to a class of plastics that are degraded by the action of naturally occurring microorganisms such as bacteria, molds (fungi) and algae. The ideal biodegradable plastic is a polymer material that has excellent performance, can be completely decomposed by environmental microorganisms after being discarded, and is finally inorganicized to become an integral part of the carbon cycle in nature. Biodegradable plastics can be divided into two types: completely biodegradable plastics and destructive biodegradable plastics. Destructive biodegradable plastics currently mainly include starch-modified or...
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IPC IPC(8): C08L67/04C08L3/02C08K5/07B29C47/92B29B9/06B29C48/92
Inventor 赖伴来
Owner SHENZHEN LIANCHUANG TECHNOLOGY GROUP CO LTD