Crosslinking polyethylene foam cotton material and preparation method thereof

A technology of cross-linked polyethylene and polyethylene, which is applied in the field of polymer materials, can solve the problems of poor mutual solubility, etc., and achieve the effects of improving softness, high tensile strength, and improving melt strength

Active Publication Date: 2018-03-27
ZHEJIANG WANLI NEW MATERIALS TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polyurethane polyols have poor misci

Method used

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  • Crosslinking polyethylene foam cotton material and preparation method thereof
  • Crosslinking polyethylene foam cotton material and preparation method thereof

Examples

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Example Embodiment

[0038] Such as figure 1 As shown, the preparation method of the cross-linked polyethylene foam material includes the following steps:

[0039] This application also provides a method for preparing the above-mentioned cross-linked polyethylene foam material, and the method includes the following steps:

[0040] (1) Poly-bio-oil synthesis stage: 100 parts by weight of bio-oil and 0.5-1 parts by weight of azobisisobutyronitrile are polymerized in a nitrogen atmosphere at 150-250°C for 2-24 hours to form a preset polymerization Degree of poly bio-oil;

[0041] (2) Polyethylene foam preparation stage: weigh 65-90 parts by weight polyethylene, 1-30 parts by weight 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 to 4 parts by weight of antioxidant are added to the screw extruder to plasticize and extrude the mother film, and then the mother film is subjected to electron radiation crosslinking t...

Example Embodiment

[0047] Example one

[0048] Step 1 Synthesis of poly canola oil

[0049] 100 parts by weight of peanut oil and 0.8 parts by weight of azobisisobutyronitrile are placed in the reaction kettle for uniform mixing, and then the air in the reaction kettle is replaced by nitrogen. In a nitrogen atmosphere, the reactor is heated to 320°C, rapeseed oil and azobisisobutyronitrile are polymerized for 8 hours to obtain poly rapeseed oil;

[0050] Step 2 Preparation of Polyethylene Foam

[0051] Weigh the raw materials according to the following parts by weight:

[0052] 75 parts by weight of low density polyethylene;

[0053] 15 parts by weight of poly canola oil;

[0054] 10 parts by weight of EPDM rubber;

[0055] 2.5 parts by weight of azodicarbonamide;

[0056] 1.5 parts by weight of zinc stearate;

[0057] Antioxidant 10102 parts by weight;

[0058] Add the low-density polyethylene, azodicarbonamide, zinc stearate, and antioxidant 1010 to the high-speed mixer according to the above-mentioned weigh...

Example Embodiment

[0062] Example two

[0063] Step 1 Synthesis of poly soybean oil

[0064] 100 parts by weight of soybean oil and 0.6 parts by weight of azobisisobutyronitrile are placed in the reaction kettle for uniform mixing, and then the air in the reaction kettle is replaced by nitrogen. In a nitrogen atmosphere, the reactor is heated to 300°C, and the soybean oil and azobisisobutyronitrile are polymerized for 12 hours to obtain polysoybean oil;

[0065] Step 2 Preparation of Polyethylene Foam

[0066] Weigh the raw materials according to the following parts by weight:

[0067] 70 parts by weight of low density polyethylene;

[0068] 10 parts by weight of poly soybean oil;

[0069] 15 parts by weight of ethylene-octene copolymer;

[0070] Azodicarbonamide 2.8 parts by weight;

[0071] 1.5 parts by weight of barium stearate;

[0072] Antioxidant 10102 parts by weight;

[0073] Add the low-density polyethylene, azodicarbonamide, barium stearate, and antioxidant 1010 to the high-speed mixer according to t...

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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 strengt...

Claims

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Application Information

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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
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