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Nanometer bi-layer film biogas digester material and preparation method thereof

A biogas digester and double-layer film technology, applied in the field of biogas digester materials, can solve problems affecting the service life of biogas digester materials, affecting the tensile strength of PVC polyvinyl chloride resin, elongation at break and weather resistance, etc., to achieve good Physical and mechanical properties and aging resistance, good physical and mechanical properties, simple process effect

Active Publication Date: 2012-07-11
FUJIAN SIJIA ENVIRONMENTAL PROTECTION MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The addition of various stabilizers, antioxidants and other fillers affects the tensile strength, elongation at break, weather resistance and other properties of PVC polyvinyl chloride resin products, thus affecting the service life of biogas tank materials
At the same time, the current biogas digester material is generally a single-layer structure, and the outer surface is in contact with the atmosphere. It is required that the biogas digester material has good physical and mechanical properties and anti-aging properties; Long-term contact with gas requires that the biogas digester material has good air tightness and corrosion resistance, which puts forward high requirements for the biogas digester material, and the current single-layer biogas digester material is difficult to meet the above requirements

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0043] The preparation method of the described nano-bilayer biogas digester material comprises the following steps:

[0044] Step 1, calendering process: first PVC polyvinyl chloride resin, DOP dioctyl phthalate, DBP dibutyl phthalate, stabilizer, antioxidant, anti-UV agent, nano calcium carbonate, modified red Mud and other additives are added to the calender molding machine and calendered to obtain a laminated film;

[0045] Step 2. Bonding process: polyester mesh is used as the middle layer, and a layer of laminating film prepared in step 1 is arranged on the upper and lower layers. The polyester fiber mesh of the middle layer is soaked, dried, and plasticized, and is synchronized with the upper and lower layers. The laminated film is sent to the laminating machine by the film sending rack, and after fully preheating at 130-140°C, the three layers are laminated together in the order of the upper laminated film, polyester mesh, and the lower laminated film , the upper lamin...

Embodiment 1

[0049] The composition and weight of single-layer biogas digester materials are:

[0050] PVC polyvinyl chloride resin 100 kg;

[0051] DOP dioctyl phthalate 15 kg;

[0052] DBP dibutyl phthalate 20 kg;

[0053] Barium, zinc composite stabilizer 3 kg;

[0054] Antioxidant tetrakis(β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate) pentaerythritol ester 0.1 kg;

[0055] Anti-UV agent 2-hydroxy-4-n-octyloxybenzophenone 0.4 kg;

[0056] Nano calcium carbonate 10 kg;

[0057] Modified red mud 20 kg;

[0058]Pigment 1 kg.

[0059] The preparation method of the described nano-bilayer biogas digester material comprises the following steps:

[0060] Step 1, calendering process: first PVC polyvinyl chloride resin, DOP dioctyl phthalate, DBP dibutyl phthalate, stabilizer, antioxidant, anti-UV agent, nano calcium carbonate, modified red The mud and other additives were added to the calender molding machine and calendered to obtain a laminated film; the calendering temperature was ...

Embodiment 2

[0065] The composition and weight of single-layer biogas digester materials are:

[0066] PVC polyvinyl chloride resin 100 kg;

[0067] DOP dioctyl phthalate 25 kg;

[0068] DBP dibutyl phthalate 20 kg;

[0069] Barium, zinc composite stabilizer 4 kg;

[0070] Antioxidant 2,6-tertiary butyl-4-methylphenol 0.2 kg;

[0071] Anti-UV agent resorcinol monobenzoate 0.6 kg;

[0072] Nano calcium carbonate 20 kg;

[0073] Modified red mud 30 kg;

[0074] Pigment 2 kg.

[0075] The preparation method of the described nano-bilayer biogas digester material comprises the following steps:

[0076] Step 1, calendering process: first PVC polyvinyl chloride resin, DOP dioctyl phthalate, DBP dibutyl phthalate, stabilizer, antioxidant, anti-UV agent, nano calcium carbonate, modified red The mud and other additives are added to the calendering machine and calendered to obtain a laminated film; the calendering temperature is 180°C, and the pulling speed is 35m / min.

[0077] Step 2. Bondi...

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Abstract

The invention discloses a nanometer bi-layer film biogas digester material, which is composed of the following components: PVC (polyvinyl chloride) resin, DOP (Dioctyl-Phthalate), DBP (dibutyl phthalate), a stabilizing agent, an antioxidant, an anti-UV (ultraviolet) agent, nano calcium carbonate, modified red mud and other accessory ingredients, wherein the components are subjected to the calendering technology, the fitting technology and the surface treatment technology, and two groups of single-surface surface-treated single-layer biogas digester materials are combined to obtain the bi-layer biogas digester material. The nanometer bi-layer film biogas digester material has the advantages that nano calcium carbonate and the modified red mud are adopted to serve as filling agents, thus the weather resistance, the aging resistance and the like of a PVC film are improved and the service life of the bi-layer film biogas digester material is prolonged; the acrylate coating is used for surface treatment, thus the weather resistance and the aging resistance of the bi-layer film biogas digester material are improved; and because of adopting the bi-layer film structure, the inner-layer film has excellent air impermeability and chemical corrosion resistance, and the outer-layer film has good physical and mechanical property and aging resistance so as to prevent the inner-layer film from being damaged by the external environment.

Description

technical field [0001] The invention relates to a biogas pit material, in particular to a nanometer double-layer biogas pit material and a preparation method thereof. Background technique [0002] The current biogas digester materials are generally made of PVC polyvinyl chloride resin as the main raw material, plus various stabilizers, antioxidants and other fillers. The addition of fillers such as various stabilizers and antioxidants affects the tensile strength, elongation at break, weather resistance and other properties of PVC polyvinyl chloride resin products, thereby affecting the service life of biogas tank materials. At the same time, the current biogas digester material is generally a single-layer structure, and the outer surface is in contact with the atmosphere. It is required that the biogas digester material has good physical and mechanical properties and anti-aging properties; Long-term exposure to gas requires good airtightness and corrosion resistance of the...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08K13/06C08K9/00C08K5/12C08K3/26C08K3/22C08J5/18C08J5/12
Inventor 林生雄张宏旺黄万能蒋石生
Owner FUJIAN SIJIA ENVIRONMENTAL PROTECTION MATERIAL TECH
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