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Biodegradable additive, and plastic product used for food packaging and prepared by using additive

A technology of biodegradation and additives, which is applied in the field of polyethylene film materials and plastic products for food packaging, can solve the problems of difficult wide-scale promotion, poor antibacterial performance, and high cost of biodegradable plastics, and achieve the effect of avoiding white pollution

Inactive Publication Date: 2017-05-31
SUZHOU TIANJIAN METAL NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the high cost of biodegradable plastics, poor physical and mechanical properties, and poor antibacterial properties make it difficult to widely promote in the field of food packaging

Method used

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  • Biodegradable additive, and plastic product used for food packaging and prepared by using additive
  • Biodegradable additive, and plastic product used for food packaging and prepared by using additive
  • Biodegradable additive, and plastic product used for food packaging and prepared by using additive

Examples

Experimental program
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Effect test

preparation example Construction

[0018] Preparation of biodegradable additives

[0019] The biodegradable additive of the present invention is prepared from the following raw materials: 5-10% by mass (preferably 8% by mass) of ultrafine iron powder with a particle diameter of 5 microns or less, 0.01-0.20% by mass of silane coupling agent, 0.02-0.20% by mass of titanic acid coupling agent 0.40% by mass, and the balance is low-density polyethylene.

[0020] In a further embodiment, the silane coupling agent is vinyltriethoxysilane, and the titanic acid coupling agent is isopropyl tris(dioctyl pyrophosphate acyloxy) titanate, so Said low-density polyethylene adopts low-density polyethylene with a lower melting point, and its consumption is 91.4-92.97% by mass.

[0021] The biodegradable additive of the present invention is prepared by the following steps:

[0022] Step 1: Weigh the components in the above mass percentages, and use a silane coupling agent and a titanic acid coupling agent to carry out surface ...

Embodiment 1

[0026] Table 1: Composition of Biodegradable Additive 1

[0027] components Content (mass%) Ultrafine iron powder 8 A silane coupling agent 0.01 Titanic acid coupling agent 0.2 Low-density polyethylene 91.79

[0028] First adopt the silane coupling agent and the titanic acid coupling agent of the percentage by weight in Table 1 to carry out surface treatment to the superfine iron powder of predetermined content; Then put the ultrafine iron powder and low-density polyethylene after surface treatment together into agitator Mixing; put the mixed material into a twin-screw granulator to make granules with the same shape and similar size as polyethylene plastic granules.

Embodiment 2

[0030] Table 2: Composition of Biodegradable Additive 2

[0031]

[0032]

[0033] Except for the difference in mass percentage (as shown in Table 2), the biodegradable additive was prepared by the same preparation method as in Example 1.

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Abstract

The invention relates to a biodegradable additive. The biodegradable additive consists of the following components in percentage by mass: 5 to 10 percent of ultrafine iron powder, 0.01 to 0.20 percent of a silane coupling agent, 0.02 to 0.40 percent of a titanate coupling agent and the balance of low-density polyethylene. The invention further relates to a preparation method of the biodegradable additive, and a food packaging material containing 1 to 3 percent by mass of the biodegradable additive, such as a polyethylene film. The experimental results prove that the biodegradable plastic products provided by the invention accord with national regulation and can be applied to food packaging.

Description

technical field [0001] The invention relates to a biodegradable additive, which can endow plastic packaging materials that are difficult to biodegrade with good biodegradability. The invention also relates to a plastic product for food packaging prepared by using the additive, especially adding the biodegradable additive The prepared polyethylene film material. Background technique [0002] Plastic products are widely used in the field of food packaging because of their low price, high quality, durability and good antibacterial properties. However, with the widespread use of plastic products such as plastic convenience bags and plastic films, the problem of "white pollution" has become increasingly prominent. This is because the intrinsic life of plastic products (from finished product to complete natural decomposition) is much longer than its service life. The inherent durability of plastic means that if left untreated it will persist in nature and accumulate. At present...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08K9/06C08K9/04C08K3/08C08L23/08B29C47/92B29C48/92
CPCB29C48/92B29C2948/9258B29C2948/92704C08J5/18C08J2323/06C08J2423/08C08K3/08C08K9/04C08K9/06C08K2003/0856C08K2201/003C08L23/06C08L2201/06C08L2203/16C08L2205/025C08L2205/03C08L2207/066C08L23/0815
Inventor 陆海荣
Owner SUZHOU TIANJIAN METAL NEW MATERIAL
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