Figure 3.11 shows the calcium carbonate powders
4 trial results from an experiment by adding the powder was calcium carbonate, a color produced by mixing LaTeX with reduced flexibility makes it easier to scrub
quantity:Per cent calcium powder holder in composite LaTeX The reaction to the unresolved 5%, 10%
NG P
G
F 15% 25% 30%
VG table 3.5 shows the per cent ratio in calcium powder filled car paved road
Key: (9) E Excellent, outstanding. Excellent Very good good
G VG very Good good average Fair
F or. Medium, Good enough to use
P Poor Not good
NR Not recommend Do not recommend
3.8 Accuracy in experimental work
In each trial record results and analysis pieces to see problems and hurdles to the development process, which focuses on the accuracy the proportion the quantity of the substance, such as additive blending. Using the device in the room go beyond helping the eyedropper. Last year the ducks and scales There are 2 digits to the right of the decimal point digital (1.1) save results every step in order to have the appropriate quantity. If you put too much may cause problems, and if the place is too small to make it ineffective. In the experiment, it requires accuracy and try many times
3 images.12 shows the accuracy in the mixing or rubber loops holding
watercolor. Glass Beaker glass, plastic or bone is used in blending together each time colored people mix 5 minutes
Figure 3.13 shows accuracy in the mix who tyre paint together
3.9 or more measure
from trial. Collect every step Save on paper and then saved in a notebook or printer. Save on computer
Figure 3.14 shows, for example, the save results before saving the actual binding
3.9.1 viscosity of paint
comparison of viscosity of the paint by Exchange. Seal with rubber shark after mixed with used
type viscosity before mixing viscosity at mixing and Exchange color shark brand trigger
108.85 17.01 seconds seconds
color LaTeX (water-based paint or LaTeX) 18.53. 16 seconds.16 seconds
table 3.6 shows the comparison of viscosity before and after mix
mixing ratio compares the ratio per cent per cent ratio
LaTeX mix 100 g 62.5% 100% 50 g shark trigger Exchange
UCERYL 18.75% 30 thinner 100 Gor Gor AAA 50%
powder calcium 30 g 18.75%-100%-total total 160
g 200 g 100%
viscosity viscosity 0.16 seconds, 0.17 seconds
table 3.7 shows the ratio of mixing colors, rubber and paint their Exchange
3.9.2. The weight of the colors that are used per area
.Compare the weight of the colors that are used by Exchange of color space: Compare with rubber shark coloring by painting two types on the wood 25x40 cm in size, with an area equal to 0.1 m2, and multiplied by a factor of 10 times, it will be equal to the area of 1 sq m
.How to weigh on trial color
1. Apply wood size 25x40 cm (= 0.1 m2) Placed on a scale, digital precision 2 points. (0.01)
2. Press TARE to zero or the screen number (0.00), and then lift the wood away
3. Painted on wood panels to fill the space by TA is equal to normal, not too many or too few
.
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