Water bag sand, water bag colorful coating production, construction pay attention to the matter at low temperature

A, low temperature in the production of color coating techniques ( A) The preparation of protective colloid solution: temperature has a great influence on the protection of hydration. When the water temperature is less than 10 degrees, protect the adhesive bonding time become very long. When the water temperature more than 35 degrees, protective glue will shut down too fast, lead to agglomeration. When the temperature drops and the water temperature is less than 10 degrees, the preparation of protective glue solution, heating the water to 20 - 30 degrees, high speed disperse 2 hours, to protect glue water merge function. If protecting glue not fully combine, parcel nonferrous particles ability will decline, which will lead to bleeding, brittle particles and other phenomena. ( 2) The preparation of the primer: 1. In the process of preparation of the primer, due to the low air temperature and water temperature, stirring time should be appropriately extended, with fully distributed fiber, and better protect gel gel. 2. According to the temperature adjustment formula of additives. To ensure the stability of the system. 3. Under the condition of low temperature, the viscosity of the primer slowly rising, cure time, 48 - 72 h) Shall be extended appropriately. Primer viscosity should be reused after qualified. ( 3) Granulation, granulation, protecting glue should be heating ( 20 - 30℃) , the best under the room temperature of 10 ℃ above, give full play to protect plastic package performance, make the color particle is more stable, no bleeding, no mixed color. ( 4) The finished paint mixed: 1. Continuous phase solidification time should be more than 12 h. Additives added quantity should be adjusted according to the variation of the temperature, to ensure the stability of late water bag water system. 2. Adjust the finished paint viscosity, the initial viscosity is lower than the summer about 5 ku. According to the size of the color dot percentage and temperature changes in different areas of the conditions, the viscosity control in 70 - in the process of packaging Between 78 ku. 2. Multicolor coating application technique at low temperature with autumn temperature change is bigger, waterborne multicolor paint in 5 ~ 15 ℃ low temperature storage when the viscosity increases, influence storage effect, is not conducive to the construction. Low temperature coating color coating, color dot easy craze, coating is too thick, to sag, dry slow, easily turned white when he first rain, etc. According to the possible problems, should adjust the following: 1. Due to the particularity of water color paint formula, the environment temperature below 5 degrees are not allowed to construction, when buying a color coating after cooling, the storage conditions should be in more than 10 degrees. 2. Custom color coating, should determine the dose of construction, to determine the scene construction progress and construction area, in a timely manner with the color coating, avoid long-term storage at low temperature. Watch the weather changes, to avoid paint material damage due to temperature drop after fixed construction cannot start. 3. Qiu dong season not to large-scale construction in low temperature area; Before ordering color paint, should according to the recent temperature adjusting production. For a particular area of the site construction, should contact the factory in advance, to know whether can meet the requirements of construction and construction, so that in the process of production in advance to the corresponding formula production adjustment, and understand the construction points for attention. 4. Due to the regional climate uncertainty, color coating construction should pay attention to the weather changes in a timely manner. Not recommended for 12 hours before it rains and rains 8 hours after construction. 5. When the temperature below 10 ℃, make sure the underlying dry. Suggested that in the morning 9:00 PM to 15:00 between the coating color paint, to ensure that the paint can dry and form a thin film before sunset. 6. The construction of low temperature, if the spray density is relatively high, Color dot distribution is more than 50%) , should be two construction and survival. Water pack sand spraying colorful coating thickness is big, should pay special attention to the survival of many applications. Avoids a spray is too thick to cause drooping, slow drying, foaming, warping, cracking of paint film.