Biodegradable polyurethane plastic using phosphorus pentoxide

一种五氧化二磷、降解塑料的技术，应用在薄料处理、运输和包装等方向，能够解决物性下降、分解速度慢等问题，达到防止颜色的变化、物性好的效果

Active Publication Date: 2012-09-19
DONGAH CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, despite various studies, the degradable polyurethane of the prior art not only has a slow decomposition rate, but also has extremely low physical properties at room temperature.

Method used

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  • Biodegradable polyurethane plastic using phosphorus pentoxide
  • Biodegradable polyurethane plastic using phosphorus pentoxide
  • Biodegradable polyurethane plastic using phosphorus pentoxide

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0047] After the phosphorus pentoxide-containing additive is coated with natural oil, the coated additive is impregnated into a one-component urethane in a liquid state, and a one-component urethane is prepared using a curing agent. At this time, in the case where potassium hydroxide (KOH) (Example 5) was also included in the additive, as in the case of including only phosphorus pentoxide, after coating the powdered potassium hydroxide with natural oil, it was mixed with The coated phosphorus pentoxide is impregnated together with one-component urethane. After pulverizing one-component urethane, it is mixed with general urethane resin, and the ratio of additives in the total mixed urethane resin is shown in Table 1, and it is extruded into a film form to manufacture The product of embodiment 1 to embodiment 5. Table 1 shows the results of measuring the physical properties of the produced thin film according to JIS K7311.

[0048] 【Table 1】

[0049]

[0050] As shown in T...

experiment example

[0052] [Experimental example] Degradation experiment by burying in soil

[0053] The degree of degradation after the polyurethane films of Examples 1 to 5 were embedded in soil was analyzed by taking photos and measuring physical properties.

[0054] figure 2 It is a schematic diagram of the state after one week of embedding the degradable polyurethane film and plastic using additives in the soil according to an embodiment of the present invention; image 3 It is a schematic diagram of the state after three weeks of embedding the degradable polyurethane film and plastic using additives in the soil according to an embodiment of the present invention; Figure 4 It is a schematic diagram of the state after five weeks of embedding the degradable polyurethane film and plastic using additives in the soil according to an embodiment of the present invention. Figure 2 to Figure 4 (a) to (e) each represent Examples 1 to 5. like Figure 2 to Figure 4 As shown, the thickness of the ...

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Abstract

Disclosed herein is a biodegradable polyurethane plastic, including: biodegradable polyurethane impregnated with a phosphorus-containing additive, wherein the additive includes phosphorus pentoxide (P 2 O 5 ), and the additive is coated with natural oil. The biodegradable polyurethane plastic has excellent physical properties, and can be effectively decomposed in a short period of time because it includes biodegradable polyurethane impregnated with a phosphorus-containing additive. Further, the biodegradable polyurethane plastic can be easily decomposed biologically by synthesizing polyurethane containing phosphorus pentoxide having strong oxidizing action, can be manufactured by directly adding an additive coated with natural oil to the synthesis of polyurethane, can prevent the reaction caused by moisture because it does not come into contact with air, and can prevent a color change.

Description

technical field [0001] The invention relates to a polyurethane degradable plastic, in particular to a polyurethane degradable plastic using phosphorus pentoxide in which phosphorus pentoxide is added to the polyurethane composition to degrade the polyurethane. Background technique [0002] Plastic, almost a necessity of modern life due to its convenience, hardly decomposes or takes hundreds of years to decompose in its natural state. Recently, as marine pollution caused by plastic discarded to Haiyang and garbage disposal problems due to the increase in plastic waste have become serious environmental problems, degradable plastics have been favored as a solution. Degradable plastics currently developed are classified into two types: photodegradable plastics decomposed by light (mainly ultraviolet rays) and degradable plastics decomposed by microorganisms. [0003] Degradable plastics are divided into plastics produced by microorganisms (bioplastics) and natural materials suc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08K9/10C08K3/32C08K3/22
CPCC08L75/04C08L2201/06C08K3/0025C08G2230/00C08G18/82C08L67/04C08L2666/18C08K9/04Y10T428/25Y10T428/31551C08K3/32C08J5/18
Inventor 郑镇云车承宪李仲燮
Owner DONGAH CHEM
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