Open-pore chemical-crosslinked polyolefin foam material and preparation method therefor

A polyolefin foaming and chemical cross-linking technology is applied in the field of open-cell chemical cross-linked polyolefin foam materials and their preparation, which can solve the problems of increased equipment investment, rough material surface, complicated production process, etc. The effect of fine and uniform cells and simple production process

Active Publication Date: 2017-11-17
TAISHAN SPORTS IND GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, adding a microwave generating device to the existing foaming equipment will not only increase equipment investment, but also make the production process more complicated
In addition, the foamed material that is not completely perforated is rolled by a roller with needle-like protrusions to achieve an open-cell structure, which will inevitably result in a rough surface of the material

Method used

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  • Open-pore chemical-crosslinked polyolefin foam material and preparation method therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A closed-cell chemically cross-linked polyolefin foam material is composed of polyolefin material, main foaming agent, foaming agent activator, cross-linking agent, cross-linking accelerator, inorganic filler, lubricant through banburying, extrusion, Calendered, foamed, trimmed and rolled.

[0031] The preparation method of described closed-cell chemically cross-linked polyolefin foam material comprises the following steps:

[0032] (1) Mix 30kg low-density polyethylene, 7.5kg high-density polyethylene, 8.5kg azodicarbonamide, 0.25kg dicumyl peroxide, 0.25kg triallyl cyanurate, 3kg talcum powder, 0.25 kg calcium stearate and 0.25kg zinc oxide were banburyed at 115°C for 15 minutes with a banbury mixer, and the rotor speed was 40r / min;

[0033] (2) Put the mixed material into a single-screw extruder equipped with a T-shaped die, melt and extrude it to make a sheet. The temperature of the extruder is 125°C, and the screw speed is 12r / min;

[0034] (3) The extruded sheet...

Embodiment 2

[0039] A closed-cell chemically cross-linked polyolefin foam material is composed of polyolefin material, main foaming agent, foaming agent activator, cross-linking agent, cross-linking accelerator, inorganic filler, lubricant through banburying, extrusion, Calendered, foamed, trimmed and rolled.

[0040] The preparation method of described closed-cell chemically cross-linked polyolefin foam material comprises the following steps:

[0041] (1) 35kg low-density polyethylene, 5kg ethylene-vinyl acetate copolymer, 8.5kg azodicarbonamide, 0.3kg dicumyl peroxide, 0.25kg triallyl cyanurate, 0.5kg carbon black , 0.25kg of calcium stearate, 0.25kg of zinc oxide were banburyed at 110°C for 15min with an internal mixer, and the rotor speed was 40r / min;

[0042](2) Put the mixed material into a single-screw extruder equipped with a T-shaped die, melt and extrude it to make a sheet. The temperature of the extruder is 120°C, and the screw speed is 12r / min;

[0043] (3) The extruded sheet...

Embodiment 3

[0048] A closed-cell chemical cross-linked polyolefin foam material is composed of polyolefin material, main foaming agent, auxiliary foaming agent, activator of foaming agent, cross-linking agent, cross-linking accelerator, inorganic filler, lubricant through dense Refined, extruded, calendered, foamed, trimmed, and rolled.

[0049] The preparation method of described closed-cell chemically cross-linked polyolefin foam material comprises the following steps:

[0050] (1) 35.5kg of low-density polyethylene, 5kg of ethylene-vinyl acetate copolymer, 8.5kg of azodicarbonamide, 1kg of microsphere blowing agent, 0.3kg of dicumyl peroxide, and 0.25kg of triallyl cyanide Urate ester, 0.5kg carbon black, 0.25kg calcium stearate, 0.25kg zinc oxide were mixed in an internal mixer at 110°C for 15 minutes, and the rotor speed was 40r / min;

[0051] (2) Put the mixed material into a single-screw extruder equipped with a T-shaped die, melt and extrude it to make a sheet. The temperature of ...

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Abstract

The invention relates to the technical field of macromolecular materials and particularly discloses an open-pore chemical-crosslinked polyolefin foam material and a preparation method therefor. The open-pore chemical-crosslinked polyolefin foam material is characterized by being obtained through subjecting a closed-pore chemical-crosslinked polyolefin foam material to repeated calendering by a double-roller calender, wherein the closed-pore chemical-crosslinked polyolefin foam material is prepared through carrying out internal mixing on polyolefin, a main foamer, an auxiliary foamer, a foamer activator, a crosslinker, a crosslinking accelerant, a lubricant and an inorganic filler according to a certain weight ratio, and carrying out extruding, calendering, foaming, edge trimming and winding. According to the open-pore chemical-crosslinked polyolefin foam material and the preparation method therefor, the production process is simple, restriction on raw materials is absent, the production cost is reduced, excessive dependency on foamer kinds and foaming multiplying factor of the open-pore chemical-crosslinked polyolefin foam material is lowered, and the resilience and maximum impact acceleration of the crosslinked polyolefin foam material are lowered.

Description

(1) Technical field [0001] The invention relates to the technical field of polymer materials, in particular to an open-cell chemically cross-linked polyolefin foam material and a preparation method thereof. (2) Background technology [0002] Restricted by the foaming mechanism, the cross-linked polyolefin foam material usually has a closed-cell structure, and the gas generated by the foaming agent is wrapped in the closed cells. When being squeezed or impacted, because part of the energy is stored in the compressed closed cells, this part of energy will be released quickly, so that the cross-linked polyolefin foam material exhibits higher resilience and larger maximum impact acceleration. [0003] Cross-linked polyolefin foam materials have been widely used in the production of children's climbing mats, outdoor leisure mats, yoga mats and various sports mats, etc., and are characterized by no odor, low density, high strength, good flexibility and long service life. Long an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/08C08K13/02C08K5/14C08K3/34C08K5/098C08K3/04C08J9/10C08J9/14
CPCC08J9/103C08J9/141C08J2203/04C08J2203/14C08J2203/184C08J2205/05C08J2205/052C08J2323/06C08J2423/06C08J2423/08C08L23/06C08L2203/14C08L2205/025C08L2207/062C08L2207/066C08L2312/00C08K13/02C08K5/14C08K3/34C08K5/098C08L23/0853C08K3/04
Inventor 陈刚王伟龙国荣许长亮卞志勇徐培明
Owner TAISHAN SPORTS IND GRP
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