Antibacterial moldproof extrusion of chemical crosslinked polyethylene foam plastic

An antibacterial, antifungal, chemical cross-linking technology, applied in the field of polyethylene foam, can solve the problems of sticky surface, reduced smoothness, brittleness, etc., and achieve excellent antibacterial and antifungal properties, high tensile strength and elongation at break. rate effect

Inactive Publication Date: 2006-05-03
TIANJIN DALIN NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The metabolites formed during the growth of mold contain organic acids and toxins, which will cause the surface of the product to appear sticky, discolored, brittle, and reduce the finish, and will also cause people who have been exposed to these moldy products for a long time to be infected with diseases

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Step 1 first low-density polyethylene (MI0.6) and azodicarbonamide in a ratio of 2: 1, low-density polyethylene (MI0.6) and dicumyl peroxide in a ratio of 19: 1, low Density polyethylene (MI0.6) and decabromodiphenyl ether and antimony trioxide were used to make foaming agent masterbatch, crosslinking agent masterbatch and Flame retardant masterbatch. The temperature of internal mixing and opening is controlled at 90°C-110°C.

[0029] In step 2, 26.56 parts by weight of low density polyethylene (MI0.6), 48 parts by weight of foaming agent masterbatch, 13 parts by weight of crosslinking agent masterbatch, 9.64 parts by weight of flame retardant masterbatch, general black masterbatch (general purpose) 0.8 parts by weight and 2 parts by weight of the antibacterial and anti-mildew masterbatch are uniformly mixed with a mixer.

[0030] Step 3 Extrude the mixture in an extruder at a temperature of 110° C. to 125° C., and calender the obtained extruded material into a sheet....

Embodiment 2

[0035] Step 1 is the same as Example 1

[0036] The proportion of various pellets contained in the mixture of step 2 is changed to: 24.6 parts by weight of low-density polyethylene, 58 parts by weight of foaming agent masterbatch, 15 parts by weight of crosslinking agent masterbatch, 0.4 part by weight of black color masterbatch, antibacterial Anti-mold masterbatch 2 parts by weight. No flame retardant masterbatch is added to the mixture.

[0037] The extrusion conditions in step 3 are the same as those in Example 1, and the specifications of the sheet material are changed to: thickness 1.2mm, width 440mm.

[0038] Step 4 Change the temperature of the first, second and third stages of the foaming furnace to 164°C, 187°C and 223°C respectively. The conveying speed of the sheet in the furnace was 4.5 m / min.

[0039] Step 5 is the same as Example 1, but the resulting product has a width of 1200mm, a thickness of 3.0-3.2mm, and a density of 37kg / m 3 .

[0040] Antibacterial a...

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Abstract

The present invention relates to polyethylene foam, in particular to an extruded antibacterial and mildew-proof chemical cross-linked polyethylene foam. Its main weight composition is: 100 parts of polyethylene and / or ethylene copolymer resin, 1-5 parts of antibacterial and mildew-proof additives, 0.5-1.5 parts of cross-linking agent, and 2-30 parts of foaming agent; The foamed compound is extruded into a non-crosslinked extruded master sheet, which is then heated to crosslink and foam the compound. The product of the invention has excellent antibacterial and antifungal properties, high tensile strength and elongation at break, low water absorption and excellent toughness, so that the foamed plastic can pass through various common processing techniques, including vacuum forming and Compressed air molding makes it easy to thermoform into simple or complex shapes. The foam can also be glued or heat welded to itself or to other materials such as synthetic resin, paper, metal, etc.

Description

Technical field [0001] The present invention relates to polyethylene foam, in particular to an extruded antimicrobial and antifungal chemically cross-linked polyethylene foam containing a foamable polyethylene composition, and the production of such antibacterial and antifungal chemically cross-linked polyethylene foam Methods. This method is to make a non-crosslinked extruded master sheet by extruding a foamable compound; the foamable compound is a resin mixture containing an antibacterial and antifungal masterbatch, a crosslinking agent and a foaming agent , After the master sheet is made, it is heated to cross-link and foam the mixture. Background technique [0002] With the continuous improvement of people's living standards and the enhancement of health awareness, people pay more and more attention to the comfort and hygiene conditions of the living environment, creating a comfortable, clean, antibacterial, mildew-proof, and preventing the spread of diseases. Learning...

Claims

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Application Information

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IPC IPC(8): C08L23/04C08K5/23C08J9/00
Inventor 杨仲田陈建华
Owner TIANJIN DALIN NEW MATERIAL TECH
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