Heat insulation type tire mold casting gypsum powder and preparation process thereof

Abstract

The invention relates to heat insulation type tire mold casting gypsum powder and a preparation process thereof. The gypsum powder is prepared from the following raw materials in parts by weight: 100 parts of alpha-gypsum powder, 1.5-3.5 parts of sulfonated melamine formaldehyde resin, 0.1-0.5 part of peach gum, 5-10 parts of white portland cement and 0.5-1.5 parts of aluminum silicate fiber. The invention further relates to the preparation process of the heat insulation type tire mold casting gypsum powder. A mold prepared by utilizing the heat insulation type tire mold casting gypsum powder disclosed by the invention has the advantages of good heat insulation effect, high drying flexural strength, high drying compressive strength, wide range of application and long service life; and the preparation process has the advantages of simplicity and low manufacturing cost, and is beneficial to industrial production.

Description

technical field [0001] The invention relates to a tire mold casting gypsum powder and a preparation process thereof, in particular to a heat-insulating tire mold casting gypsum powder and a preparation process thereof. Background technique [0002] At present, most tire casting gypsum mold manufacturers directly use high-strength gypsum (α-gypsum) powder as raw material when making tire casting gypsum molds, and the molds made with this α-gypsum powder have the following shortcomings: solid The thermal conductivity of the substance is high, the distance between molecules is short, the gap is small, and heat conduction is easy to occur; in the process of mixing and stirring with water, water molecules are adsorbed (the thermal conductivity of water is about 25 times that of air), and its thermal conductivity Greatly increased, thereby making its thermal insulation effect poor, not conducive to the trimming of the mold, especially not conducive to human operation. Contents o...

AI Technical Summary

Problems solved by technology

[0002] At present, most tire casting gypsum mold manufacturers directly use high-strength gypsum (α-gypsum) powder as raw material when making tire casting gypsum molds, and the molds made with this α-gypsum powder have the following shortcomings: solid The thermal conductivity of the substance is high, the distance between molecules is short, the gap is small, and heat conduction is easy to occur; in the process of mixing and stirring with water, water molecules are adsorbed (the thermal conductivity of water is about 25 times that of air), and its thermal conductivity Greatly increased, so that the heat insulation effect is poor, which is not conducive to the trimming of the mold, especially not conducive to human operation