Wood-plastic formwork for construction engineering

A wood-plastic formwork and construction engineering technology, applied in the field of building materials, can solve the problems of low bending strength, impact strength, toughness, mechanical properties, ineffective stress transmission, and unsuitable building formwork, and achieve dimensional stability and compressive strength. Improve hardness, eliminate glass fiber exposure, and reduce weight

Inactive Publication Date: 2007-06-27
徐肖虎
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the compatibility between the hydrophilic plant fiber and the hydrophobic polymer matrix is ​​very poor; at the same time, the strong hydrogen bond in the fiber molecule makes it easy to aggregate into agglomerates when blended with the polymer matrix, resulting in poor dispersion
This makes the stress cannot be effectively transmitted at the interface, resulting in low mechanical properties such as bending strength, impact strength and toughness of wood-plastic materials.
Therefore, it is obviously not suitable to directly use the existing wood-plastic composite materials to make building templates.

Method used

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  • Wood-plastic formwork for construction engineering
  • Wood-plastic formwork for construction engineering
  • Wood-plastic formwork for construction engineering

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] In this embodiment, the construction engineering wood-plastic formwork 11 shown in FIG. 1 is taken as an example to illustrate its components and manufacturing process steps. Please refer to FIG. 3 .

[0050] Firstly, the ceramic hollow microspheres and the maleic anhydride grafting agent are weighed in a ratio of 3:1, and the two are fully mixed to obtain a mechanical performance modifier.

[0051] Then press the following weight percentages:

[0052] Bagasse fiber 35%;

[0053] Glass fiber 25%;

[0054] Polyvinyl chloride (PVC) recycled pellets 20%;

[0055] Calcium carbonate 7%;

[0056] Mechanical performance modifier 7%;

[0057] Silane coupling agent 3.5%;

[0058] PE wax 2.5%.

[0059] To weigh the above raw materials. Then weigh three parts of mechanical property modifiers respectively according to 2% of bagasse fiber weight, 5% of glass fiber weight, and 4% of polyvinyl chloride (PVC) regenerated pellet weight.

[0060] Send the weighed bagasse plant fi...

Embodiment 2

[0068] This embodiment takes the production of the wood-plastic construction template 11 shown in FIG. 2 as an example to illustrate its components and manufacturing process steps, please refer to FIG. 4 .

[0069] Firstly, the ceramic hollow microspheres and the maleic anhydride grafting agent are weighed in a ratio of 4:1, and the two are fully mixed to obtain a mechanical performance modifier.

[0070] Then press the following weight percentages:

[0071] Wood flour fiber 60%;

[0072] Glass fiber 10%;

[0073] Polyethylene (PE) new pellets 20%;

[0074] Calcium carbonate 1%;

[0075] Mechanical performance modifier 4%;

[0076] Titanate coupling agent 1%;

[0077] Silicone masterbatch 4%.

[0078] To weigh the above-mentioned raw materials. Then weigh three parts of mechanical performance modifiers respectively by 3% of wood flour fiber weight, 4% of glass fiber weight, and 5% of polyethylene (PE) new pellet weight.

[0079]Send the weighed plant fiber (wood powder...

Embodiment 3

[0082] This embodiment takes the production of the wood-plastic building engineering formwork 11 shown in FIG. 1 as an example to illustrate its components and manufacturing process steps, please refer to FIG. 3 .

[0083] Firstly, the ceramic hollow microspheres and the maleic anhydride grafting agent are weighed according to the ratio of 5:1, and the two are fully mixed to prepare the mechanical performance modifier.

[0084] Then press the following weight percentages:

[0085] Sorghum straw fiber 48%;

[0086] Glass fiber 10%;

[0087] Polypropylene (PP) recycled pellets 32%;

[0088] Calcium Carbonate 4%;

[0089] Mechanical performance modifier 2%;

[0090] Silane coupling agent 3.5%;

[0091] Silicone oil 0.5%.

[0092] To weigh the above raw materials. Three parts of mechanical property modifier 4 were weighed according to 4.5% by weight of sorghum straw fiber, 3.5% by weight of glass fiber, and 3% by weight of plastic 3 .

[0093] Send the weighed plant fiber ...

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Abstract

A wood-plastics shuttering board for building engineering is composed of at least two basic wood-plastic ply layers made of the filler (vegetative fibers, glass fibers and plastics) and assistant (calcium carbonate, modifier, coupling agent and lubricant), and at least one lattice material layer between two basic wood-plastic ply layers and with two adhesive layers coated on its both surfaces. Its manufacture technology is also disclosed.

Description

technical field [0001] The invention belongs to the field of building materials, in particular to a wood-plastic formwork material for construction engineering. Background technique [0002] The building engineering formwork materials used for pouring cement beams, columns, and walls usually use wooden formwork and steel formwork. [0003] Wood formwork is the earliest to be used. Domestic formwork based on wood has gone through two generations: the first generation is wood and sawn timber, and the second generation is glued artificial formwork represented by multi-layer plywood. However, dismantling the template is easy to split, and the second use must be changed from large to small, and it is easy to bend and deform when soaked in water and exposed to the sun, and the loss rate is high. Generally, the number of turnovers is 3-6 times, and a large amount of wood is consumed. [0004] As a substitute for wooden formwork, steel formwork has been standardized and serialized....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04G9/02B32B37/15B29C47/92C04B18/24C04B14/42C04B16/04C04B22/10C04B24/40C04B24/04C08L97/02C08K9/06C08K7/14C08L23/02B29C48/92
CPCB29C47/92Y02W30/91
Inventor 徐肖虎
Owner 徐肖虎
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