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根据不同的分类方法可将分解颗粒分为以下几种类型

根据不同的分类方法可将分解颗粒分为以下几种类型

来源网址:https://www.swjjkl.com/ 2022-11-14 09:33:04    

1、按照降解机理和破坏形式,生物降解地膜可分为完全生物降解地膜和添加型可生物降解地膜两种类型。

1. According to degradation mechanism and destruction form, biodegradable mulching film can be divided into two types: complete biodegradable mulching film and additive biodegradable mulching film.
完全生物降解地膜是由能被完全分解的物质组成的塑料薄膜,该物质主要来源于淀粉、纤维素、壳聚糖及其他多糖类天然材料,其降解的终产物为C02和H20,可完全为自然界消纳,也不会对环境产生二次污染。其主要品种有聚乳酸(PLA)、聚己内酯(PCL)、聚羟基丁酸酯(PUB)等。此外聚乙烯醇也可被水及完全降解。
Completely biodegradable mulching film is a plastic film composed of materials that can be completely decomposed. The materials mainly come from starch, cellulose, chitosan and other polysaccharide natural materials. The end products of degradation are C02 and H20, which can be completely absorbed by nature and will not cause secondary pollution to the environment. Its main varieties are polylactic acid (PLA), polycaprolactone (PCL), polyhydroxybutyrate (PUB), etc. In addition, polyvinyl alcohol can also be completely degraded by water.
添加型可生物降解地膜,是在不具有生物降解特性的通用塑料基础上,添加具有生物降解特性的天然或合成聚合物或生物降解促进剂、加工助剂等,经混合制成。目前,添加型可生物降解地膜,主要由通用塑料、淀粉、相容剂、自氧化剂、加工助剂组成。其典型品种为聚乙烯淀粉可生物降解地膜。
The additive biodegradable mulching film is made by mixing natural or synthetic polymers or biodegradation promoters, processing aids, etc. with biodegradation characteristics on the basis of general plastics without biodegradation characteristics. At present, the additive biodegradable mulching film is mainly composed of general plastics, starch, compatibilizer, self oxidizer and processing aids. The typical variety is polyethylene starch biodegradable mulching film.
2、根据原材料,生物降解地膜可分为淀粉基可生物降解地膜、纤维素基可生物降解地膜、纤维素与其它天然高分子材料的共混与共聚地膜、木质素基生物降解地膜等。
2. According to raw materials, biodegradable mulching film can be divided into starch based biodegradable mulching film, cellulose based biodegradable mulching film, blend and copolymerization mulching film of cellulose and other natural polymer materials, lignin based biodegradable mulching film, etc.
3、根据成型工艺,生物降解地膜可分为薄膜类型,注塑类型、片材类型和发泡类型。
3. According to the molding process, biodegradable mulching film can be divided into film type, injection type, sheet type and foam type.