Preparation method of carbon dioxide activated paulownia wood powder composite PVC building template

A carbon dioxide, building template technology, applied in the direction of manufacturing tools, wood treatment, impregnating wood, etc., to achieve the effect of increasing bonding performance, improving overall stability, and improving heat-resistant dimensional stability.

Inactive Publication Date: 2021-01-26
界首市晟翔新型建材有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of this invention is to provide a kind of carbon dioxide activated paulownia po

Method used

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  • Preparation method of carbon dioxide activated paulownia wood powder composite PVC building template
  • Preparation method of carbon dioxide activated paulownia wood powder composite PVC building template

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preparation example Construction

[0028] A carbon dioxide activated paulownia powder composite PVC building formwork preparation method, comprising the following steps:

[0029] (1) Paulownia flour pretreatment:

[0030] Evenly disperse paulownia powder into the ethanol solution, stir evenly, then add ethylenediamine and citric acid to the ethanol solution, adjust the temperature to 55-60°C, keep warm in a water bath, stir for 2 hours, then filter and wash with water until Neutral, dried to constant weight to obtain pretreated paulownia powder;

[0031] Ethylenediamine

[0032] Ethylenediamine, referred to as EDA, the chemical formula is C 2 h 8 N 2 , is a typical fatty diamine, which is colorless or light yellow oily or watery transparent liquid, which produces smoke in the air, has an ammonia-like smell, and is hygroscopic. The molecular weight is 60.10, the melting point is 8.5°C, and the spontaneous ignition point is 385°C. Belongs to alkaline substances, easily soluble in water, ethanol, slightly so...

Embodiment 1

[0062] A carbon dioxide activated paulownia powder composite PVC building formwork preparation method, comprising the following steps:

[0063] (1) Paulownia flour pretreatment:

[0064] Evenly disperse paulownia powder into the ethanol solution, stir evenly, then add ethylenediamine and citric acid to the ethanol solution, adjust the temperature to 55°C, keep warm in a water bath, stir for 2 hours, then filter, wash with water until neutral , and dried to constant weight to obtain pretreated paulownia powder; the mass fraction of the ethanol solution is 20%; the mixing mass ratio of the paulownia powder and ethanol solution is 1:6. The mixing weight ratio of the ethylenediamine, citric acid and ethanol solution is: 1.2:0.3:45.

[0065] (2) Carbon dioxide activation treatment:

[0066] Divide the pretreated paulownia powder into two parts ab, add a part of pretreated paulownia powder into the gasification furnace, then pass in nitrogen gas, exhaust the air in the gasificatio...

Embodiment 2

[0072] A carbon dioxide activated paulownia powder composite PVC building formwork preparation method, comprising the following steps:

[0073] (1) Paulownia flour pretreatment:

[0074] Evenly disperse paulownia powder into the ethanol solution, stir evenly, then add ethylenediamine and citric acid to the ethanol solution, adjust the temperature to 60°C, keep warm in a water bath, stir for 2 hours, then filter, wash with water until neutral , dried to constant weight to obtain pretreated paulownia powder; the mass fraction of the ethanol solution is 20%; the mixing mass ratio of the paulownia powder and ethanol solution is 1:8. The mixing weight ratio of the ethylenediamine, citric acid and ethanol solution is 2:0.5:50.

[0075] (2) Carbon dioxide activation treatment:

[0076] Divide the pretreated paulownia powder into two parts ab, add a part of pretreated paulownia powder into the gasifier, then pass in nitrogen gas, exhaust the air in the gasifier, then adjust the temp...

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Abstract

The invention discloses a preparation method of a carbon dioxide activated paulownia wood powder composite PVC building template, and relates to the technical field of building materials. The method comprises the following steps: (1) pretreatment of paulownia wood powder; (2) carbon dioxide activation treatment; (3) preparation of a dispersing agent; and (4) extrusion molding. According to the invention, the mechanical property of the building template prepared by the process is obviously improved, mainly, the tensile strength is obviously enhanced, but the elongation at break is reduced to asmall extent.

Description

technical field [0001] The invention belongs to the technical field of building materials, in particular to a method for preparing a carbon dioxide-activated paulownia powder composite PVC building formwork. Background technique [0002] With the rapid development of the construction industry, the status of building formwork projects has become increasingly prominent. The technology of building formwork directly affects the quality, cost and efficiency of project construction. It has gradually become a hot spot in application. Although traditional building formwork such as wood formwork, bamboo plywood, and wood plywood have good application performance, due to the need to apply a large amount of wood, it will cause damage to forest resources, and its waste reuse rate low, most of them will be directly discarded or incinerated, causing environmental pollution, and the production of steel structure formwork consumes a lot of energy and materials, so how to obtain a more envir...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08L97/02C08K5/20C08K5/09B27K3/02B27K3/50B27K5/00B27K5/04
CPCB27K3/0207B27K3/0271B27K3/50B27K5/0085B27K5/04C08L27/06C08L2201/08C08L2205/025C08L2205/03C08L97/02C08K5/20C08K5/09
Inventor 朱鹏飞
Owner 界首市晟翔新型建材有限公司
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