Functional degradable material with controllable degradation period and preparation method thereof

Abstract

The invention relates to a degradable material, in particular to a functional degradable material with a controllable degradation period and a preparation method thereof. The functional degradable material with the controllable degradation period is prepared from the following raw materials in parts by weight: 30-50 parts of polybutylene terephthalate, 58 parts of a carbon dioxide copolymer, 10-40parts of polybutylene succinate, 3-5 parts of a compatilizer, 0.2-0.5 part of a lubricant, 3-5 parts of a plasticizer and 0.2-0.5 part of an antioxidant. Raw materials of the functional degradable material with the controllable degradation period further comprise a mixture of modified starch, polyglycolic acid and poly (p-dioxocyclohexanone). By controlling the ratio of the modified starch to thepoly (butylene succinate), the ratio of the mixture of the polyglycolic acid and the poly (p-dioxanone) and the addition amount of the antioxidant, the full-biodegradable material with different degradation periods can be prepared under the composting conditions of the same temperature, humidity, pH value, flora and the like; the material is suitable for products with different degradation periods.

Description

technical field [0001] The invention relates to a degradable material, in particular to a functional degradable material with a controllable degradation cycle and a preparation method thereof. Background technique [0002] In recent years, in the field of environmental protection, the problem of solving the pollution caused by "white garbage" to the ecological environment has attracted much attention. Among them, an effective way to solve this problem is to develop biodegradable materials. Biodegradable materials refer to the natural environment such as soil and / or under conditions such as sandy soil, and / or under specific conditions such as composting conditions or anaerobic digestion conditions or in water-based culture fluid, the degradation is caused by the action of microorganisms existing in nature, and finally completely degraded into carbon dioxide (CO 2 ) or / and methane (CH 4 ), water (H 2 O) and the mineralized inorganic salts of its elements and new biomass ...

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Problems solved by technology

[0003] However, the degradation time of these materials is difficult to control. When these degradable materials are used in agricultural production, it is difficult to meet the needs of agricultural production. At present, there are related researches on adding inorganic additives during the preparation of biodegradable materials to achieve the effect of controllable degradation time. , but due to the excessive amount of inorganic additives, the deviation of the mechanical properties of the material and the problem of insufficient degradation

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