Gypsum enhancer formula

                                            Gypsum enhancer formula

n the basis of physical and chemical properties of gypsum, half water in front of the gypsum curing add a certain amount of other chemical materials, make plaster after curing strength is improved, the additive called gypsum strengthening agent.

Through access to relevant data and chemical experiments summarized below:
In half water gypsum into the process of dihydrate gypsum, water is influence material setting time, strength, porosity, etc, the main factors in theory of chemical reactions need water was 18.6%, in actual production, the actual join the amount of water is much bigger than this number, its purpose is to obtain a certain liquid casting gypsum slurry in order to add water is not only the strength of gypsum material density bibulous rate, but also affect the gypsum coagulation time, with the increase of water consumption, gypsum, the setting time of growth when the water consumption for 160-190% of the final set, such as water consumption is 50% mixing difficulties, if the water consumption is 40%, it cannot determine the setting time.
Strength of gypsum additive formula table:
(1) sodium humate 0.3 ~ 0.5%, and building materials fiber waste 10 ~ 12%, 7.2 15.7% of papermaking waste liquid. Preparation and application: the above preparation good aqueous solution, according to the water paste ratio 1:1. 25-1 to 1. The proportion of 45 add gypsum powder, liquid after classics agitate, PH value control between 7.5 ~ 8 as appropriate, the introduction of humic acid and its salt gypsum products than pure water modulation forming gypsum products flexural strength increased by 1.35 ~ 1.97 times, the compressive strength increased by 1.31 ~ 2.23 times.
(2) the borax 0.2%, water 98.8% and use: the borax solution in water solution, then press with the solution of water and gypsum ratio 1:1, the proportion of 4 ~ 1.6 add gypsum powder is then churned into arts and crafts, product surface smooth, hard, high strength, compared with pure water gypsum products, bending degrees increased by 1.9 times, the compressive strength increased by 1.74 times.
(3) (surface enhanced) in aqueous solution containing 1% of polyethylene oxide, impregnation has been produced good arts and crafts for 10 minutes, can make its surface hardness, good wear resistance high strength.
(4) (light weight, high strength foaming plaster crafts, weight ratio), 89-99% gypsum powder, rubber polymer latex 2.8, 0.5 5, starch surfactants 0.1 ~ 0.2. Water react with gypsum latex foaming agent amount of 0.1 ~ 0.2 configuration and use; Will add soluble in water, and then mixing gypsum powder production.
(5) (weight ratio) : gypsum, 100, 107 glue 15 ~ 20%, white latex 5%, water 80%. Preparation and use: the two rubber dissolved in the water, made of mix the glue solution, then the mixture with gypsum ratio, 1.3:1 ratio mixing plaster for production.
(6) : 30% floor glue, 107 glue 10%, water 60%. Preparation and use: mix two kinds of rubber mixing with water are adjusted glue solution, then according to the mixture and gypsum ratio of 1.4:1 deployment of plaster for production.
(7) : melamine resin - ethyl alcohol three commercially available solid powder melamine resin, October 25 water dissolved, add glycol in 3, combined cooling to 10 to 15 ℃, with half water gypsum, 100, mix after injection molding, put