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Low-odor polyethylene foam material with thermal bonding performance and preparation method thereof

A polyethylene foaming and low-odor technology, applied in the field of polyethylene foaming materials, can solve the problems affecting the application scenarios of polyethylene foaming materials, restricting application fields, and limited composite effects, etc., achieving simple and convenient application, wide application, Appropriate hardness effect

Active Publication Date: 2022-01-14
HUBEI XIANGYUAN NEW MATERIAL TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, polyethylene foam materials are only thermally compounded with the above materials after surface treatment (corona, film coating, etc.). Although such treatment methods can be used in the scenarios listed above, they are greatly affected by external conditions. , for example, the composite effect that can be achieved by corona treatment (the method to verify the composite effect is usually the test of peel strength) is very limited, and if the polyethylene foam material is not used in time, but placed for a period of time before thermal composite, it is easy Ineffective; the film coating method will bring some additional work, making the cost higher
[0003] Due to a series of processing techniques, the special odor of some raw materials and the unique porous structure of polyethylene foam materials, some VOC small molecules It still remains in the foamed material, causing odor problems, seriously affecting the application scenarios of polyethylene foamed materials, and greatly limiting its application fields

Method used

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  • Low-odor polyethylene foam material with thermal bonding performance and preparation method thereof
  • Low-odor polyethylene foam material with thermal bonding performance and preparation method thereof
  • Low-odor polyethylene foam material with thermal bonding performance and preparation method thereof

Examples

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preparation example Construction

[0038] The preparation methods in actual engineering are, for example:

[0039] (1) Weighing: Weigh 100 parts of low-density polyethylene resin, 10-50 parts of adhesive, 1-15 parts of foaming agent, 0.7-15 parts of deodorant, 1-20 parts of Processing aids;

[0040] (2) Granulation: knead low-density polyethylene resin, foaming agent, adhesive, deodorant, and processing aid at room temperature for 2 to 20 minutes. This stage is the pre-dispersion stage, and then after melt kneading Discharge into the water ring granulator for granulation to obtain foam masterbatch;

[0041] (3) Extrusion: the obtained foaming masterbatch is discharged into the screw extruder to obtain a sheet, which is replaced by a base sheet below;

[0042] (4) Electron irradiation cross-linking: the substrate is subjected to electron irradiation cross-linking, the electron energy of irradiation cross-linking is selected as 0.1-4.0 MeV, the irradiation dose is 3-50 Mrad, and the degree of cross-linking of t...

Embodiment 1

[0049] Polyethylene foam sheet 1 component and weight ratio:

[0050] Low-density polyethylene 100 copies Ethylene-vinyl acetate copolymer 10 copies Copolyamide 10 copies Maleic anhydride grafted polyethylene wax 1 copy Foaming agent 5 copies itaconic acid 3 copies activated carbon 0.5 parts antioxidant 1 copy coupling agent 0.3 parts talcum powder 10 copies

[0051] The melt index of low-density polyethylene resin is 2.0g / 10min (test condition 190℃ / 2.16KG), and the density is 0.923g / cm 3 ,The VA content in the ethylene-vinyl acetate copolymer is 48%, the melt index of the copolyamide is 30g / 10min (test condition 160℃ / 2.16KG), the melting range is 115~120℃, and the blowing agent is azodimethoxane Amide (ADC), the particle size D50 value is 17.5 μm, the gas generation capacity of the foaming agent is 230ml / g, the particle size D50 value of itaconic acid and activated carbon is 10 μm, and the particle...

Embodiment 2

[0061] Polyethylene foam sheet 2 components and weight ratio:

[0062]

[0063]

[0064] The melt index of low-density polyethylene resin is 2.0g / 10min (test condition 190℃ / 2.16KG), and the density is 0.923g / cm 3 , The melt index of copolyamide is 50g / 10min (test condition 160℃ / 2.16KG), the melting range is 120~125℃, the foaming agent is azodicarbonamide (ADC), the particle size D50 value is 25μm, and the foaming The gas generation amount of the agent is 240ml / g, the particle size D50 value of itaconic acid and activated carbon is 10 μm, and the particle size D50 value of talcum powder is 20 μm.

[0065] The preparation method of polyethylene foam sheet 2:

[0066] S1: Weigh low-density polyethylene, copolyamide, maleic anhydride grafted polyethylene wax, foaming agent, itaconic acid, activated carbon, antioxidant, coupling agent, talcum powder according to the above weight ratio;

[0067] S2: Knead low-density polyethylene, copolyamide, maleic anhydride grafted polyethy...

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Abstract

The invention provides a low-odor polyethylene foam material with thermal bonding performance and a preparation method thereof, and belongs to the field of polyethylene foam materials. The density of the material is 0.05-0.18 g / cm<3>, and the hardness of the material is represented as 30-70 according to Shore C. The low-odor polyethylene foam material has uniform thermal bonding performance from inside to outside. After the low-odor polyethylene foam material is bonded with an external fabric, the peel strength is 1.5-2.6 N / mm. The odor grade of the low-odor polyethylene foam material is not greater than 2.5. The polyethylene foam material has no adhesive property at the temperature of 100-130 DEG C and has adhesive property at the temperature of higher than 180 DEG C. The polyethylene resin is resin obtained by polymerizing polyethylene monomers or polymerizing a polyethylene monomer with other monomers. The invention also provides a method for preparing the polyethylene foam material. The material provided by the invention has the advantages of thermal bonding performance, good processing technology and no pungent smell, and can be well compounded with fabrics made of other materials.

Description

technical field [0001] The invention belongs to the field of polyethylene foam materials, and more specifically relates to a low-odor polyethylene foam material with thermal bonding performance and a preparation method thereof. Background technique [0002] Polyethylene foam materials are widely used in infrastructure, construction, home life and other fields due to their unique porous structure and excellent shock absorption, sound absorption, sound insulation, sealing, moisture resistance, and resilience. When polyethylene foam materials are used in many fields, they often need to be used in conjunction with other materials to achieve a more ideal application effect. This also brings about the problem of how to use polyethylene foam materials with other materials, and the solution will follow. The application scene changes, and the common application scene includes polyethylene foam material and textile material, metal material, leather, etc. after thermal lamination. At ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08L23/08C08L77/00C08L23/00C08L51/06C08L97/00C08K3/34C08K3/26C08K7/24C08K5/092C08J9/10
CPCC08J9/103C08J9/0095C08J9/0066C08J9/0061C08J9/0023C08J2323/06C08J2423/08C08J2477/00C08J2423/00C08J2451/06C08J2497/00C08K3/34C08K2003/265C08K7/24C08K5/092C08J2203/04
Inventor 李昊魏琼
Owner HUBEI XIANGYUAN NEW MATERIAL TECH INC
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