A kind of high-performance foamed polyethylene sheet and preparation method thereof

A foamed polyethylene, high-performance technology, applied in the field of high-performance foamed polyethylene sheet and its preparation, can solve the problem of inability to meet the protection requirements of high-end electrical appliances and precision instruments, low density and surface hardness, and easy to be pierced by sharp objects Wear and other problems, to achieve the effect of long sustainable use time, excellent heat resistance and low temperature resistance, good resilience and shock resistance

Active Publication Date: 2011-12-14
XIAMEN SANDEXIN SCI&TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the density and surface hardness of EPE materials widely used in the market are relatively low. The density can only reach 20-30g / m3, and the hardness can only reach 30-40 Shore hardness. Poor collision performance, unable to meet the protection requirements of high-end electrical appliances and precision instruments

Method used

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  • A kind of high-performance foamed polyethylene sheet and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] 1) 40kgLDPE, 10kgLLDPE, 0.01kgDCP and 0.3kg talc powder are sucked into the hopper of the extruder through a vacuum feeder, and then fall into the barrel of the extruder, and then enter the homogenization section after being transported and melted.

[0030] 2) Add 100ml of butane and 24g of glyceryl monostearate (melted) before the homogenization section with a high-pressure metering pump, and the various materials are fully contacted and mixed in the homogenization section, so that the additives and butane are evenly dispersed in the melt.

[0031] 3) Extrude through the filter, foam, cool, shape, flatten, pull, and roll to obtain the product.

[0032] 4) Density measurement: cut the foamed polyethylene sheet, measure its length (l), width (w), height (h), and then measure its weight (m), then the density ρ=m / (l*w*h)

[0033] Surface hardness measurement: measured by Shore hardness tester.

[0034] The experimental results are shown in the table.

[0035] Table 1

...

Embodiment 2

[0038] As described in Example 1, step 1) is changed to: 45kgLDPE, 5kgLLDPE, 0.01kgDCP and 0.5kg talcum powder are sucked into the hopper of the extruder through a vacuum feeder, so that they fall into the barrel of the extruder, and after conveying, The melt enters the homogenization section. The experimental results are shown in Table 2:

[0039] Table 2

[0040] Density (g / m 3 )

Embodiment 3

[0042] As described in Example 1, step 1) is changed to: 30kgLDPE, 20kgLLDPE, 0.015kgDCP and 0.6kg light calcium carbonate are sucked into the hopper of the extruder through a vacuum feeder to make it fall into the barrel of the extruder. Conveying and melting into the homogenization section. The experimental results are shown in Table 3:

[0043] table 3

[0044] Density (g / m 3 )

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Abstract

The invention relates to a high-performance foamed polyethylene plate and a preparation method thereof. The plate provided by the invention comprises the following raw materials in parts by weight: 50 parts of LDPE (low-density polyethylene) and LLDPE (linear low-density polyethylene), 0.01-1 part of peroxide, 0.3-2 parts of talcum powder and/or calcium carbonate, 0.02-0.06 part of anti-shrinkageagent and 0.1-0.4 part of foaming agent. In the invention, butane and the like are adopted as the foaming agent, low-density polyethylene and linear low-density polyethylene are taken as resin raw materials, the prepared foamed polyethylene has the advantages of high density and high surface hardness, the density of the foamed polyethylene is 60-400 g/m<3>, and the surface hardness is 40-70 degrees. The foamed polyethylene has high scraping resistance and puncture resistance as well as good elasticity and quake-proofing effect. The foamed polyethylene accords with the requirements of high performance of the current packaging material and comprehensive protection of packaged material, has the advantage of long sustainable utilization time when being taken as the plate and has good market potential.

Description

technical field [0001] The invention relates to a material and a manufacturing method thereof, in particular to a high-performance foamed polyethylene sheet and a manufacturing method thereof. Background technique [0002] With the rapid development of my country's national economic construction, a large number of high-sensitivity and high-precision electronic equipment, optical instruments, instrumentation appliances and other equipment require high-quality packaging with good protection performance. At the same time, protective materials with excellent heat insulation, heat preservation, cushioning and buoyancy properties are also very much needed in the fields of railway, navigation, aviation packaging and transportation that are matched with the transportation of the above products. The research on expanded polyethylene (EPE) that has arisen in my country in recent years is just the beginning of solving this problem, and has achieved results so far. EPE is a light-weigh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/08C08K13/02C08K5/103C08K3/34C08K3/26C08K5/14C08J9/14
Inventor 宋刚王洪庆
Owner XIAMEN SANDEXIN SCI&TECH CO LTD
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