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pvc building plastic formwork and preparation method

A technology of plastic formwork and construction, applied in the field of PVC building plastic formwork and its preparation, can solve problems such as thermal residual deformation, achieve low shrinkage rate, high heat deformation temperature, and good heat deformation resistance

Active Publication Date: 2016-03-23
SHANDONG JINHUA CONSTR GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to overcome the problem of thermal residual deformation caused by hydration in the construction of the existing PVC building plastic formwork, the invention provides a PVC building plastic formwork and its preparation method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A PVC building plastic formwork, comprising the following raw materials in weight ratio: 100kg of polyvinyl chloride, 10kg of chlorinated polyethylene, 45kg of calcium powder, 15kg of talcum powder, 10kg of wood powder, 5kg of tribasic lead sulfate, stearic acid Calcium calcium 1kg, oxidized polyethylene wax 1.2kg, PE wax 1.2kg, resinous neoprene 1.0kg, polypropylene grafted butyl acrylate copolymer 16kg, calcium stearate 1kg, antioxidant 1kg, glass fiber 10kg, ultraviolet light Absorber UV-3261kg, azodicarbonamide 0.66kg, sodium bicarbonate 1.4kg, antioxidant is triphenyl phosphite.

[0027] A preparation method of PVC building plastic formwork, comprising the following steps:

[0028] (1) Pretreatment of glass fiber. Since glass fiber products are drawn with paraffin emulsified sizing, most of the sizing components are oils and some hydrophilic substances, which hinder the relationship between PVC and glass fiber. Therefore, to use glass fiber products as reinforcing...

Embodiment 2

[0038] A PVC building plastic formwork, comprising the following raw materials in weight ratio: 100kg of polyvinyl chloride, 5kg of chlorinated polyethylene, 50kg of calcium powder, 10kg of talcum powder, 15kg of wood powder, 3kg of tribasic lead sulfate, stearic acid Calcium calcium 1.5kg, oxidized polyethylene wax 2kg, PE wax 1.5kg, resinous neoprene 2kg, polypropylene grafted butyl acrylate copolymer 17kg, calcium stearate 0.6kg, antioxidant 2kg, glass fiber 15kg, ultraviolet light Absorbent UV-92kg, azodicarbonamide 0.66kg, sodium bicarbonate 2kg, antioxidant is diethyl diphenyl phosphite.

[0039] Preparation method embodiment 1. After testing, the density of PVC building plastic formwork is 0.62g / cm3, the Vicat softening point is 95°C, the thermal expansion coefficient is 2.25E-05 / °C, and the Charpy impact test value is 22Kj / m 2 , the bending strength is 22.8MPa, and the bending elastic modulus is 1395Mpa.

Embodiment 3

[0041] A PVC building plastic formwork, comprising the following raw materials in weight ratio: 100kg of polyvinyl chloride, 15kg of chlorinated polyethylene, 48kg of calcium powder, 12kg of talcum powder, 12kg of wood powder, 4kg of tribasic lead sulfate, stearic acid Calcium calcium 2kg, oxidized polyethylene wax 1.5kg, PE wax 2kg, resin neoprene 1.5kg, polypropylene grafted butyl acrylate copolymer 18kg, calcium stearate 0.8kg, antioxidant 1.5kg, glass fiber 20kg, Ultraviolet absorber 1.5kg, azodicarbonamide 0.66kg, sodium bicarbonate 1.6kg, antioxidant is diphenyloctyl phosphite.

[0042] In this embodiment, the ultraviolet absorber is 7BS, BAD or OBS.

[0043] Preparation method embodiment 1.

[0044] Preparation method embodiment 1. After testing, the density of PVC building plastic formwork is 0.62g / cm3, the Vicat softening point is 92°C, the thermal expansion coefficient is 2.23E-05 / °C, and the Charpy impact test value is 22Kj / m 2 , the bending strength is 22.4MPa, ...

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Abstract

The invention provides a PVC (Polyvinyl Chloride) building plastic template and a manufacturing method thereof. The building plastic template comprises the following raw materials: polyvinyl chloride, chlorinated polyethylene, calcium powder, talcum powder, wood flour, tribasic lead sulfate, calcium stearate, oxidized polyethlene wax, PE (Polyethylene) wax, resin chloroprene rubber, a polypropylene grafted butyl acrylate copolymer, calcium stearate, an antioxidant, glass fibers, an ultraviolet light absorber, azodicarbonamide and sodium hydrogen carbonate. The manufacturing method of the building plastic template comprises the following steps: heating a blender mixer to 90 DEG C; adding calcium powder and wood flour, and then adding chlorinated polyethylene, and finally adding various assistants and filler; gradually heating to 140 DEG C for mixing for 10-20 minutes, and cooling to 30-45 DEG C; extruding by a twin-screw extruder and plastifying to form colloid; and manufacturing in a moulding press die.

Description

technical field [0001] The invention relates to a PVC building plastic formwork, in particular to a PVC building plastic formwork and a preparation method. Background technique [0002] Architectural plastic formwork is an energy-saving and environmentally friendly product. The promotion and application of plastic formwork, "replacing wood with plastic", is an important measure to save resources and protect the environment, and it is the key to implementing "green construction" in formwork projects links. Polyvinyl chloride (PVC) is a general-purpose plastic, and its outstanding advantages are flame retardancy, wear resistance, corrosion resistance to other chemicals, and low gas and water vapor permeability. In addition, it has excellent comprehensive mechanical properties, product transparency, electrical insulation, heat insulation, noise reduction, and shock absorption, and is a general-purpose material with the most superior performance-price ratio. But PVC also has s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/06C08L23/28C08L97/02C08K13/06C08K9/06C08K7/14C08K3/34B29C47/92B29C48/92
CPCB29B7/46B29B7/90B29C48/40B29C48/875B29C48/92B29C2948/92704B29C2948/92714B29C2948/92895B29C2948/92904
Inventor 宋瑞文赵业国白伟波马丽霞
Owner SHANDONG JINHUA CONSTR GRP
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