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Crosslinked polyethylene foam material and preparation method thereof

A technology of cross-linking polyethylene and polyethylene, applied in the field of polymer materials, can solve the problems of self-adhesion of products, expensive energy consumption of corona equipment, lower yield rate, etc. The effect of long maintenance time and high surface tension

Active Publication Date: 2021-05-25
ZHEJIANG WANLI NEW MATERIALS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, corona equipment is expensive and consumes a lot of energy, and the surface tension of polyethylene foam products after corona treatment can only last for about 2 weeks and cannot be stored for a long time
Adding ethylene-vinyl acetate copolymer resin (EVA) with polar ester groups can also improve the non-polar surface tension of polyethylene foam products, but the use of ethylene-vinyl acetate copolymer resin (EVA) increases the process cost, and Ethylene-vinyl acetate copolymer resin (EVA) has weak polarity and needs to be added in large quantities, which can easily cause severe self-sticking of the product and reduce the yield of good products

Method used

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  • Crosslinked polyethylene foam material and preparation method thereof
  • Crosslinked polyethylene foam material and preparation method thereof
  • Crosslinked polyethylene foam material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Step 1, the preparation of vinylpyridine zinc salt

[0046] Dissolve 100 parts by mass of 4-vinylpyridine in 200 parts by mass of 95% ethanol, add 45 parts by mass of zinc chloride, carry out stirring reaction at 60°C for 12 hours, perform suction filtration, wash and dry with ethanol and ethyl acetate, That is, vinylpyridine zinc salt.

[0047]Step 2, preparation of cross-linked polyethylene foam material

[0048] 80 parts by weight of low density polyethylene, 10 parts by weight of vinylpyridine zinc salt, 10 parts by weight of ethylene-octene copolymer, 5 parts by weight of azodicarbonamide blowing agent, 1.5 parts by weight of zinc stearate, 1 part by weight of After mixing 1010 parts of antioxidants evenly, they are added to a single-screw extruder for extrusion, and the extrusion temperature is controlled at 95-125°C, the screw speed is 75rpm, and the die temperature is 125°C to obtain a master sheet with a thickness of 0.3mm; then, Pass the master sheet through...

Embodiment 2～6

[0050] Except the following difference, all the other are the same as Example 1, select different metal salts to react.

[0051] Table 1

[0052]

Embodiment 7～10

[0054] Except the following difference, all the other are the same as Example 1, select different alkenylpyridines to react.

[0055] Table 2

[0056]

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Abstract

The invention discloses a crosslinked polyethylene foam material and a preparation method thereof. The crosslinked polyethylene foam material is prepared by crosslinking polyethylene and alkenyl pyridinium salt. Compared with the prior art, the cross-linked polyethylene foam material disclosed by the invention is better in antibacterial property, and the antibacterial property reaches 95% or above. The cross-linked polyethylene foam material disclosed by the invention is larger in surface tension, longer in surface tension maintaining time, better in product adhesion and wettability, and more beneficial to the gluing performance of the product.

Description

technical field [0001] The embodiments of the present invention relate to polymer materials, in particular to cross-linked polyethylene foam materials and preparation methods thereof. Background technique [0002] Cross-linked polyethylene foam material is a new type of foamed plastic with a closed-cell structure between soft (polyurethane) and hard (polystyrene) foam materials. It can be used as a good insulation, heat insulation, shockproof and buoyancy material. Antibacterial polyethylene foam products are widely used in mechanical shock absorption, floor mats, automotive interiors, electronic equipment and other fields. With the upgrading of products, higher requirements are put forward for the antibacterial performance of material products. [0003] In the prior art, the main method for improving the antibacterial properties of polyethylene foam products is to add antibacterial agents, but the antibacterial agents are expensive and have poor compatibility with polyethy...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L23/08C08K5/098C08K5/134C08K5/00C08J9/10
CPCC08J9/103C08J9/0023C08J9/0028C08J2203/04C08J2323/06C08J2423/08C08K5/098C08K5/1345C08K5/0091
Inventor 张轩郭枫梁学正
Owner ZHEJIANG WANLI NEW MATERIALS TECH CO LTD
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