Fine-tune the zero VOC architectural coating formulation

When it comes to building coatings applications, the main challenge for suppliers and paint manufacturers is to meet environmental regulatory requirements while producing products of customer-acceptable quality. In recent years, latex companies have developed polymers with a glassy transition temperature of
(Tg)
of
0,
to
5,
degrees C, which do not require or require a minimum amount of film-forming additives to form a paint film. However, these soft polymers have some defects in freeze-thaw stability, anti-adhesion and resistance to contamination.
Although certain properties, such as stain resistance, depend more on the composition and proportion of the monosome, additives such as multi-role group neutralizers can also affect coating properties, including packaging stability, freeze-thaw stability and wash resistance.
flexibility in the use of the
multi-function group of the cleaners provides formulators with the flexibility to optimize performance parameters. These mesodies may be inorganic or organic. The inordering agents used in coating formulations are only used to adjust
pH
values. Organic streptanolamines are used as a median agent, but during the life of the coating, they also bring the characteristics of the coating multi-errands. The advantages of streptanolamine multi-errand groups include co-dispersion, neutralization, and improved and reduced
VOC performance by optimizing
. In addition, the performance characteristics of the tank include advantages such as suppressing rust corrosion, improving storage time and improving the stability of freezing and melting.
streptonolamine as a mesodilant, which is essential for today'
VOC
it
(<5 g/L)
coatings meet quality requirements. In addition to inorganic liquid ammonia, sodium hydroxide
(NaOH)
, potassium hydroxide
(KOH)
, sodium carbonate
(Na2CO3)
and potassium carbonate
(K2CO3)
The streptanolamine
2-
amino
-2-
ethyl
-1, 3-
propylene glycol
(AEPD
™
VOX 1000)
. The results show the effect on the critical performance of the coating during its lifetime. This information provides formulating designers with the flexibility to
quality
quality and performance of zero-value VOC coatings.
study
a
a half-light formula without film-forming additives in this study. To keep up with the latest formulation trends, select the Rhoplex

™
VSR-2015
as the main paint base for half-light formulations. Samples from different batches were prepared using
AEPD VOX 1000
, ammonia,
NaOH
,
KOH
,
Na2CO3
and
K2CO3
. To show the dispersion effect of the multi-role group's mediators on inororally dispersed agents, a combination of
Tiona 596 TiO2
slurry and
Polygloss 90
body pigments is used as a pigment system.
table
1
shows
AEPD VOX 1000
is a beamine containing two hydroxyl hydroxyl groups. The factors that affect the efficiency of amines are relative molecular mass, alkali strength and dissolving parameters. When considering the efficiency of amines,
of
(pKa)
should
considered. Hydroxyl hydromassin groups in streptanolamine provide dispersion
,
and improve other properties of coatings such as freeze-thaw stability and wash resistance. Table
2
the physical properties of inorgents and agents.
process
semi-gloss coatings are prepared with each medium agent and the
pH
requirement
(8.5-9.0)
(Table
3
) is added at the beginning of the grinding phase, i.e. before the body pigment
Polyglos 90
. However,
Na2CO3
and
K2CO3
are added during the painting phase, as adding these medians during the grinding phase will become frozen glue.
formula performance
Potassium carbonate is the least efficient in inorganic and inorganic agent when the
pH
value is
8.6-8.7
. The high shear and low shear viscosity properties of the initial formulation are very similar, with the exception of the low
KU
of potassium hydroxide. Compared to all inorders,
AEPD VOX 1000
the highest pigment dispersion efficiency. These performances are below
4
.
glossy results illustrate the
AEPD VOX 1000
as a dispersant for the adhesive. This effect can also be measured by the
of the body pigment
Polyglos 90.
Figure
1
shows that the percentage of mass of the polyceptive group and agent adsorbed to the pigment surface is comparable to that of other streptanolamines
AMP-95
™ polysequine groups, which are commonly used as dispersants for latex paint formulations. The polymer dispersant used as a reference is the ammonium salt of polycarbonate. The two streptonolamines used in this study have similar dispersion effects on kaolin.
gloss increases the
of the gloss of the semi-gloss paint system depends on the relative amount and particle size
/
latex pigment. Dispersants
/
surfactants affect dispersion efficiency, resulting in increased gloss. Streptanolamine as a dispersant can improve gloss.
the middle agents to be studied in the order of gloss increase (best to worst):
AEPD VOX 1000> K2CO3 s Na2CO3> NaOH >
water
> KOH
. Figure
2
gives a gloss improvement.
dispersion stability
the dispersion stability of pigments is affected by the medium-dispersion agent. Figure
3 shows
the gloss of the
AEPD VOX 1000
system is stable four weeks after
50
degrees C is placed. The liants to be studied are ranked in order of gloss stability after four weeks (best to worst):
AEPD VOX 1000> Na2CO3>NaOH> KOH>
Ammonia
>K2CO3
.
pH

multi-ernation group of mesodes after
50
degrees C aging four weeks can be well controlled
pH
value. Organic liants have better pH stability than inorganic

(figure
4
). The mesosurgents to be studied were ranked in the order in which
pH
was controlled in four weeks' time (best to worst):
AEPD VOX 1000> Na2CO3>
ammonia
>NaOH>K2CO3> KOH
.
viscosity stability
the multi-ernosaic group of mesodes after
50
degrees C aging four weeks showed good viscosity stability. The system with inororgent mesodilation agents shows poor viscosity stability after
50
degrees C aging four weeks later (figure
5
). The liants to be studied are arranged in order of good viscosity stability after four weeks (best to worst):
AEPDVOX 1000>
AOH
>>Na2CO3> >K2CO3> KOH
.
formula performance
zero
VOC
formula has some paint performance shortcomings, see table
5
. Anti-adhesion, freeze-thaw stability, and wash-resistant performance tests show varying degrees of difference between neutralizers.
stability
stability test is carried out according to
ASTM D2243
method, the temperature is
-18
degrees C
(0
degrees F
)
. Since the zero
VOC
formula contains no glycol or propylene glycol, it has not passed the
-18
degrees C test, and all formulations have been tested for
-4
degrees C edge temperature, resulting in differences between the different formulations. Of all the mesizing agents, potassium hydroxide and potassium carbonate failed the test.
wash resistance
The wash resistance of the
AEPD VOX 1000
coating formulation increased by
>34.8%
compared to sodium carbonate and
>16.5%
compared to potassium carbonate (Figure
6
and
7
).
Conclusion
this study shows that streptanolamine can improve the dispersion efficiency and dispersion stability of pigments in coating formulations. Compared with all inorders, streptanolamine
AEPD VOX 1000
multi-official group mesosor has better pigment dispersion efficiency, dispersion stability,
pH
stability and viscosity stability. Among all inorganic neutralizers, sodium carbonate and potassium carbonate showed poor water resistance and the lowest number of washes when using sodium carbonate. Overall,
KOH
show the lowest pigment dispersion efficiency,
pH
stability and viscosity stability. The anti-adhesion of sodium carbonate and potassium carbonate is slightly less. The freezing and thawing stability of potassium hydroxide and potassium carbonate is poor compared to all other inorganic
and
AEPD VOX 1000
.
differences in processes were also found in the use of inorganic and organic mesodrants. Adding sodium carbonate and potassium carbonate during the grinding phase forms a freezer. The addition of
AEPD VOX 1000
during the grinding phase reduces processing time due to the dispersion effect, which allows us to see a decrease in viscosity during the grinding phase.
Although the formulation optimizes some of the performance mentioned above, in addition to the process benefits, many properties such as gloss, wash resistance and freeze-thaw stability have a direct impact on latex paint formulations.
consumers and more industry regulations require products produced to meet quality standards, with
VOC
or
VOC
, odorless, etc. create problems for paint formulat designers. Based on emerging technical constraints, new formulations rely more on the function of additives. Strepamines offer a wide range of properties, including optimized pigment dispersion, improved
pH
stability and rheodrophing properties, and many other important properties. This study demonstrates that multi-role groups and agents can provide formulators with technical options to address the challenges of today's latex paint formulations, namely, environmental protection, health, safety and truly odorless.
。