Pulverized coal ash and PVC (Poly Vinyl Chloride) composited micro-foaming building template reinforced by long glass fibers, and preparation method of building template

Abstract

The invention relates to a pulverized coal ash and PVC (Poly Vinyl Chloride) composited micro-foaming building template reinforced by long glass fibers. The building template comprises a PVC composited modified material matrix, and the matrix consists of PVC, a heat stabilizer, a foaming agent, a foam stabilizer, a flexibilizer, an internal lubricant, an external lubricant, pulverized coal ash and high-strength long glass fibers. According to the pulverized coal ash and PVC (Poly Vinyl Chloride) composited micro-foaming building template reinforced by long glass fibers as well as a preparation method of the building template, the pulverized coal ash and the long glass fibers are adopted for filling and reinforcement, so that both the dimensional stability and the economical efficiency of the building template are enhanced greatly; the pulverized coal ash as a recyclable raw material is environment-friendly and energy-saving and can be used for replacing inorganic fillers such as calcium carbonate, so that the economic cost is lowered; in addition, the building template has advantages of light weight, resistance to medium acid-alkali corrosion, recyclability, heat insulation, good mechanical performance, flame retardation, wear resistance and the like; besides, the micro-foaming building template, which is manufactured by virtue of specific auxiliaries and an advanced micro-foaming technology, is environment-friendly, nontoxic, light in weight and resistant to medium acid-alkali corrosion; the service cycle of the building template is prolonged by 4-5 times than that of a wooden template and a bamboo-glue template, and the physical and mechanical properties of the building template are enhanced by 3-4 times; in addition, the building template can be demolded easily, and simultaneously the building template is recyclable, green and environment-friendly and saves the economic cost.

Description

technical field [0001] The invention relates to a building template composite material, in particular to a long glass fiber reinforced fly ash composite PVC micro-foaming building template and a preparation method thereof. Background technique [0002] Polyvinyl chloride (PVC) is a general-purpose plastic second only to PP, and 70% of the total consumption of PVC is used in the field of building materials. Since PVC entered the Chinese market in the mid-1990s, it has been widely accepted by developed countries such as Europe, the United States, Japan, and South Korea for its excellent decoration, practicality, economy, energy-saving and environmental protection. Rapid, is gradually being familiar and accepted by the people. Fly ash is a residue discharged from power plants. Its transportation, discharge and accumulation have many adverse effects on the environment in rural and urban areas. At present, the comprehensive utilization of fly ash is a very meaningful subject. ...

AI Technical Summary

Problems solved by technology

The cost of steel formwork is high, while wood formwork and bamboo formwork have disadvantages such as water swelling, easy deformation, short service life, and non-recyclability.

At present, glass fiber is widely used to reinforce PP, PA, etc., and the glass fiber used is short glass fiber. After blending the basic material with glass fiber, it is granulated, and then extruded with general-purpose equipment to produce building templates. Not only the mechanical strength of the template is not very high, the effect of technical index improvement is not obvious, but also the process is complicated, at least two process steps are required to make the finished product, the energy consumption is large, and the economic cost is high