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A kind of cross-linked polyethylene foam material and preparation method thereof

A technology for cross-linking polyethylene and polyethylene, applied in the field of polymer materials, can solve problems such as poor mutual solubility

Active Publication Date: 2020-10-27
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, polyurethane polyols have poor miscibility with polyethylene and cannot be blended

Method used

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  • A kind of cross-linked polyethylene foam material and preparation method thereof
  • A kind of cross-linked polyethylene foam material and preparation method thereof

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preparation example Construction

[0037] Such as figure 1 Shown, the preparation method of this cross-linked polyethylene foam material may further comprise the steps:

[0038] The present application also provides a preparation method of the above-mentioned cross-linked polyethylene foam material, the preparation method comprising the following steps:

[0039] (1) Polymerization bio-oil synthesis stage: 100 parts by weight of bio-oil and 0.5-1 part by weight of azobisisobutyronitrile are polymerized under nitrogen atmosphere at 150-250°C for 2-24 hours to form a pre-set polymerization degree of polymer bio-oil;

[0040] (2) Polyethylene foam preparation stage: Weigh 65-90 parts by weight of polyethylene, 1-30 parts by weight of polybio-oil, 2-30 parts by weight of thermoplastic elastomer, 0.5-5 parts by weight of foaming agent, 0.5- 4 parts by weight of sensitizer and 1-4 parts by weight of antioxidant are added to the screw extruder to plasticize and extrude the master piece, and then the master piece is s...

Embodiment 1

[0047] Step 1 Poly Canola Oil Synthesis

[0048] 100 parts by weight of peanut oil and 0.8 parts by weight of azobisisobutyronitrile were placed in the reactor, stirred and mixed evenly, and then the air in the reactor was replaced by nitrogen gas. In a nitrogen atmosphere, the reactor was heated to 320°C, and the rapeseed oil and azobisisobutyronitrile were polymerized for 8 hours to obtain poly-rapeseed oil;

[0049] Step 2 Polyethylene Foam Preparation

[0050] Weigh raw materials according to the following parts by weight:

[0051] 75 parts by weight of low-density polyethylene;

[0052] Poly rapeseed oil 15 parts by weight;

[0053] 10 parts by weight of EPDM rubber;

[0054] Azodicarbonamide 2.5 parts by weight;

[0055] Zinc stearate 1.5 parts by weight;

[0056] Antioxidant 1010 2 parts by weight;

[0057] Add the low-density polyethylene, azodicarbonamide, zinc stearate, and antioxidant 1010 into the high-speed mixer according to the above parts by weight, and ...

Embodiment 2

[0062] Step 1 Poly soybean oil synthesis

[0063] 100 parts by weight of soybean oil and 0.6 parts by weight of azobisisobutyronitrile were placed in the reactor, stirred and mixed evenly, and then the air in the reactor was replaced by nitrogen gas. In a nitrogen atmosphere, the reactor was heated to 300°C, and soybean oil and azobisisobutyronitrile were polymerized for 12 hours to obtain polysoybean oil;

[0064] Step 2 Polyethylene Foam Preparation

[0065] Weigh raw materials according to the following parts by weight:

[0066] 70 parts by weight of low-density polyethylene;

[0067] 10 parts by weight of poly soybean oil;

[0068] 15 parts by weight of ethylene-octene copolymer;

[0069] Azodicarbonamide 2.8 parts by weight;

[0070] 1.5 parts by weight of barium stearate;

[0071] Antioxidant 1010 2 parts by weight;

[0072] Add the low-density polyethylene, azodicarbonamide, barium stearate, and antioxidant 1010 into the high-speed mixer according to the above pa...

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Abstract

The embodiment of the invention provides a crosslinking polyethylene foam cotton material, which is prepared from 65 to 90 weight parts of polyethylene, 1 to 30 weight parts of poly-bio-oil, 2 to 30 weight parts of thermoplastic elastomers, 0.5 to 5 weight parts of foaming agents, 0.5 to 4 weight parts of sensitizing agents and 1 to 4 weight parts of antioxidants. The foam cotton material has goodperformance such as the longitudinal tensile strength being greater than 3.5 MPa, the longitudinal elongation percentage being greater than 200 percent, the transverse tensile strength being greaterthan 1.5MPa, the transverse elongation percentage rate being greater than 350 percent, the 25-percent compression ratio being lower than 80KPa. Meanwhile, the foam cotton material has the apparent density being 0.2 to 0.5g / cm<3>. The polyethylene foam cotton can be applied into a sealing buffering or adhesive tape base materials of view windows and touch screens of electronic products; the thickness of the foam cotton is 0.04 to 0.5mm; the thickness deviation is within 10 percent.

Description

technical field [0001] The invention relates to a cross-linked polyethylene foam material and a preparation method thereof, belonging to the technical field of polymer materials. Background technique [0002] Radiation cross-linked polyethylene foam is a new type of foamed plastic with a closed-cell structure between soft (polyurethane) and rigid (polystyrene) foams, with superior strength, toughness, elasticity, and flexibility , Abrasion resistance, chemical corrosion resistance, low temperature resistance and good insulation, etc., can be used as good insulation, heat insulation, shockproof and buoyancy materials, and are widely used in various fields such as industry, agriculture, construction and transportation. [0003] High tensile strength polyethylene foam products are widely used in cushioning materials, packaging, tapes and other applications, and with the improvement of product quality requirements, higher requirements are put forward for product tensile strength...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/06C08L91/00C08L23/16C08L23/08C08L23/22C08L9/00C08L9/06C08L53/02C08L23/28C08K5/134C08J9/10C08J7/12
CPCC08J7/123C08J9/0023C08J9/0061C08J9/103C08J9/105C08J2203/04C08J2309/00C08J2323/06C08J2323/08C08J2409/06C08J2423/08C08J2423/16C08J2423/22C08J2423/28C08J2453/02C08J2491/00
Inventor 张轩郭枫梁学正
Owner ZHEJIANG WANLI NEW MATERIALS TECH CO LTD