A kind of tpu film with controllable degradation time and preparation method thereof

A degradation time, film technology, applied in the fields of botanical equipment and methods, flat products, other household appliances, etc., can solve problems such as affecting growth and failing to achieve controllable degradation time.
CN105104036BActive Publication Date: 2017-11-17雄林(越南)责任有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
雄林(越南)责任有限公司
Publication Date
2017-11-17

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Abstract

The invention relates to a TPU thin film with controllable degradation time and a preparation method thereof. The TPU thin film comprises a TPU thin film layer and an antibacterial agent layer covering the outer part of the TPU thin film, wherein the raw material of the TPU thin film layer comprises TPU grafted with PLA; the isocyanate index of the TPU thin film layer is smaller than 1; raw materials of the antibacterial agent layer comprise quaternary phosphonium salt and / or quaternary ammonium salt. The preparation method comprises the following steps: adding the TPU grafted with the PLA into liquid-state quaternary phosphonium salt and / or quaternary ammonium salt to be immersed; and extruding the TPU by an extruding machine to obtain the TPU thin film. According to the TPU thin film provided by the invention, the degradation time is controllable and the TPU thin film can be completely degraded into H2O and CO2 which have no pollution to the environment, so that the TPU thin film is suitable for being popularized and applied in a large scale.
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Description

technical field

[0001] The invention relates to the field of polymer synthetic materials, in particular to a TPU film with controllable degradation time and a preparation method thereof. Background technique

[0002] TPU (Thermoplastic polyyrethane, thermoplastic polyurethane) is a new type of organic polymer synthetic material. The English trade name is: Flexible polyurethane. The group city is characterized by repeating urethane groups, and also contains other groups such as ester bonds and ether bonds; from the molecular structure, it is composed of rigid chain segments and flexible chain segments alternately. This special molecular structure makes TPU has excellent properties unmatched by other thermoplastic elastic materials, such as high wear resistance, impact resistance, oil resistance and chemical resistance.

[0003] In agricultural production, plastic film is mostly used to maintain soil moisture, improve water use efficiency, improve the growth environment of cr...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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