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Method for preparing ultralight EVA, LDPE foam material

A foam material and foam material technology, which is applied in the chemical field to achieve the effect of improving compatibility

Inactive Publication Date: 2014-05-21
惠铁军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is currently no good way to improve the compatibility of the two

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Put LDPE in the reaction equipment, the ozone mass concentration is 55mg / L, and the gas flow rate is 0.11m 3 / h, reaction temperature 80°C, react for 20 hours; take EVA, LDPE and mix evenly, fix the amount of AC foaming agent, DCP and other additives, mix on a double-roller mixer at 120°C for 10 minutes, and then discharge the sheet. Molding and foaming at 165°C and 10 MPa pressure for 25 minutes to obtain EVA, LDPE blended foaming material.

Embodiment 2

[0013] Put LDPE in the reaction equipment, the ozone mass concentration is 75mg / L, and the gas flow rate is 0.25m 3 / h, reaction temperature 85°C, react for 40 hours; take EVA, LDPE and mix evenly, fix the amount of AC foaming agent, DCP and other additives, mix on a double-roller mixer at 120°C for 20 minutes, and then discharge the sheet, and then Molding and foaming at 165°C and 10 MPa pressure for 50 minutes to obtain EVA, LDPE blended foam material.

Embodiment 3

[0015] Put LDPE in the reaction equipment, the ozone mass concentration is 60mg / L, and the gas flow rate is 0.22m 3 / h, reaction temperature 83°C, react for 25 hours; take EVA, LDPE and mix evenly, fix the amount of AC foaming agent, DCP and other additives, knead on a double-roller mixer at 120°C for 12 minutes, discharge the sheet, and then Molding and foaming at 150°C and 150MPa pressure for 33 minutes to obtain EVA, LDPE blended foam material.

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PUM

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Abstract

A method for preparing an ultralight EVA, LDPE foam material belongs to the chemical technical field, and in particular, the invention relates to a method for preparing an ultralight EVA, LDPE foam material. The invention provides a method for preparing an ultralight EVA, LDPE foam material, which is simple, practical, high-efficient, and free of pollution. The method for preparing an ultralight EVA, LDPE foam material of the invention comprises the following steps: putting LDPE in a reaction device with an ozone mass concentration of 55-75 mg / L, a gas flow of 0.11-0.25 m3 / h, reacting at a temperature of 80-85 DEG C for 20-40 hours; well mixing EVA and LDPE, fixing the using amounts of an AC foaming agent, DCP, and other auxiliary agents, mixing in a twin-roll mixing machine at 120 DEG C for 10-20 min, discharging to obtain sheet materials, and then performing molding and foaming at 100-165 DEG C and 1-10 MPa for 25-50 min to obtain the EVA, LDPE mixed foaming material.

Description

technical field [0001] The invention belongs to the technical field of chemistry, and more specifically, the invention relates to a method for preparing ultra-light EVA and LDPE foam materials. Background technique [0002] EVA (ethylene-vinyl acetate copolymer) molded foam material has excellent properties such as light weight, shock resistance, softness, excellent resilience, and small compression deformation. PE foam material is strong, flexible, and corrosion-resistant. LDPE (low density Polyethylene) to modify the EVA foam material can not only improve its comprehensive performance, obtain a lower density foam material, but also effectively reduce product costs and expand the scope of application. The compatibility of non-polar LDPE with polar polymer EVA is not ideal. For ultra-light blended foam materials with high density and performance requirements, how to improve the compatibility of the two is to obtain EVA with excellent comprehensive performance. The key to LD...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C44/00B29C44/34B29B7/56C08L23/08C08L31/04C08L23/04C08K5/14C08J9/10
Inventor 惠铁军褚朝森温永康
Owner 惠铁军
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