There are a few differences of opinion about the foaming of putty construction.

Hello, friends and colleagues!
My net name is "Glue King", I entered the line in 2000, has been 19 years, because I have a glue production workshop, a dry powder paint production workshop, and later added a raw material And a variety of additives production workshop, in many years of hands-on for the process of climbing and rolling, "I practiced a fighting ability, there are industry friends joked that I am not dead small strong, sound funny, think bitter", perhaps because of professional habits Problem, most people often do what industry likes to pay attention to what topics, of course, I am no exception, today I want to "dashan" is: in this Internet traffic prevalent at the moment, their respective media platforms, WeChat public number, WeChat circle of friends, etc., has become the dissemination of information resources The main battleground of social opinion evaluation; a good information resource sharing, can benefit the vast majority of industry groups, if a technical science article from a person who has no actual experience, the content all rely on Baidu search for a little big truth and some take for granted subjective reasoning logic, This form of technical science articles are both superficial and lack of real technical core, by those who do not understand the technology of the self-media platform as a tool carrier to attract click-through rate and traffic, by those who have encountered the same product problems but failed to solve the peer as such as treasure-like collection forwarding, this article reflected in the science putty construction foaming problem analysis is the most prominent.
people cloud also cloud, to spread the word subverted the objective facts
on the dry powder putty construction batch scraping bubbles appear a lot of articles, its popular analysis of the causes and improvement methods are also many, I read the various forums, various self-media platforms, WeChat public number including WeChat friends circle of views and opinions, content for Much the same, change soup did not change the soft text, many are theoretical reasoning-style explanation and analysis, can combine their own practical experience analysis of the people are not many; This kind of soup does not change the soft text forwarding from the consistent, to the natural evolved into a passing, from the human cloud also cloud to almost to subvert the objective reality, evolved into the current convention, in short, the difference between theoretical speculation and scientific reality is not generally large, but very large.
people feel that putty construction has bubbles the main factor is no less than putty lock water is poor, putty formula composition structure force design is not scientific caused by the foaming; Sprinklers, substation tightness is too large or too small, substation sand holes are too large, batch speed is too fast, one-time scraping thickness of more than 2.0MM, temperature is too high water vapor conversion too fast cloud and so on the perverse theorism; Asked why putty foaming is how to solve such problems, there will always be a few "radicals" to move out of this soft text as a solution to the problem magic weapon let people compare, but after reading those soft text content is not only no egg use, but you also have to be grateful to the German non-stop drop to him thank you, We mixed in the network for a little longer industry people can pay attention to observe:
1, since those soft text has already found the cause and given a good solution and advice, then the birth of dry powder putty industry continued nearly 20 years later, Why is foaming still called "industry disease" by the industry? Who solved the foaming problem by reading the soft text?
, since the soft text summary analysis of those substations will inevitably bubble, how to change the big brand putty batch scraping can not bubble it?
, through the above two points, smart people are not difficult to imagine that putty construction foaming problem substing environment is not an inevitable factor (but does not absolutely exclude the

).
The drug "industry disease" is also a disease, not an incurable disease
in our Chinese dictionary there is such an idiom called: the drug, since putty construction foaming problem is called "industry common disease" by the industry, then the common disease is also a disease, in my personal understanding of a product "general disease" is only technology to be addressed rather than cancer-like incurable disease, in the development process of Chinese manufacturing industry Our "Made in China" is from maturity gradually mature, paint products are no exception, as a manufacturing enterprises, or as a technical research and development personnel, if really those raw materials or "half a barrel of water" technical personnel encountered can not overcome the technical problems on the "industry disease" pushed, this is extremely responsible for their own is not the matter, only to meet the difficulties, continuous research and exploration, in order to break through the status quo of stagnation.
's the right problem? How do I get the medicine? But where putty construction foaming phenomenon is said to be "industry disease", it can be concluded that he did not dig out the crux of the problem, did not find the cause of no medicine, no drug disease will still exist, just like a pathological biological chain is not perfect continuous phase, an excellent enterprise or an excellent engineer, in the face of product technical bottlenecks, will be a positive attitude to overcome the bottleneck rather than a negative "industry disease" as a perfunctory.
low-end technology for "low-end products"?
We often chat in groups, from time to time someone will come up with a sentence: putty, mortar, dry powder coatings are low-end products, no technical content, for many years this sentence has been misinterpreted by most industry people, some people unwittingly said, there are people care not to believe that we do not look at some under the guise of "putty nuclear technology" materials, nor To listen to those who sometimes come out of the "low-end products have no technical content" need not play the argument; neutral: any paint product has its core technology, here refers to the core technology is not as strong as the development of nuclear weapons, super deterrence and killing to understand it, but refers to the product's cost-effective, scientific ingredients, ratio balance points and technical focus of the pronoun.
So-called "low-end products" meaning the correct understanding of the words should mean: the product value-added low, the threshold for entry to the industry is low, not its low technical content; The same is to do dry powder putty, must excellent, Mei Nest, Libang, three trees, Doles and other brands putty why is soon recognized and accepted by the market, they in addition to the economic strength of enterprises, marketing planning to do in place, can you say that their dry powder putty has no technical content?
dry powder putty is in the glue putty theoretical basis of the evolution and was born, from about 20 years ago, the development process, is considered by the industry to be the lowest end of the product, the least technical content of the product is the most prominent product, For example: batch scraping foaming, grinding when shelling, polishing after powdering, painting after rolling skin, spray real stone paint after shelling, putty batch scraping yellowing, layer between layers without adhesion and many other problems have long troubled a large number of putty production enterprises, if you say putty products are low-end products without technical content of the product I am the first unwilling to listen to, why putty product development for so many years most enterprises in the technical bottleneck problem has not been able to break through? Would you even say it's an "industry disease"? Why do we have a one-on-one discussion about putty technical challenges during group chats that can't be easily solved? As far as I know, the chance of putty problems accounts for the highest percentage of other paint problems.
Don't look for the crux of the problem, talk about what's the medicine
This is what I saw in other forums an industry enthusiast about putty construction foaming a paragraph of reply:
" putty construction foaming is generally divided into two categories, one is the bottom of the "caldes" Another type is not exposed bubbles, dewy bubbles are the wall after absorbing water gas emissions and show a "caldes" shape, not exposed bubbles are putty in the process of water stirring putty itself contains air holes, batch scraping when the putty base surface will produce a lot of bubbles."
To quote his analysis, not that I intend to combat his enthusiasm, but I have a different view of this, personally think that as a technical discussion, both to have a tit-for-tat against the more true spirit, but also to have a good attitude of the wrong thing, on the above he analyzed the two major phenomena and causes I do not agree;
First he said that the dewy "crater" is caused by the wall after absorbing water gas emissions, I would like to ask: when the wall absorbs putty moisture when the wall can discharge a few air pressure? Can you turn putty over the mouth in the shape of a crater? Here I would like to emphasize: putty bubbles are usually divided into physical bubbles and chemical bubbles two kinds, the so-called physical bubbles generally refers to the wall in the absorption of putty moisture when there is gas discharged from the wall, batch scraping thin putty will be the gas top broken to form a needle eye-shaped or sunken small pit-shaped substrate, with scraping plate back and forth several times can basically fill back the base surface, batch 2.0MM thick scraping Putty bubbles generally can not break the bubble at that time but put putty base top small packets into empty drums (putty tone and too thin water is too big another theory), "crater" phenomenon usually does not belong to the formation of physical bubbles, but chemical bubbles, so-called chemical bubbles like we have seen flour and fermentation powder steamed steamed steamed bread process, fermented flour with a knife spread out is not "caldes" shape? It does not need the wall to absorb its moisture, there is no sharp gas external causes, as long as it spread out there is a "caldes", which is a chemical fermentation factor; putty powder after adding excessive bentonation (expansion), starch ether (fermentation) and other chemicals naturally have "caldes" appear, but with scraping plate back and forth after a few times can still be flattened.
The second category he said putty powder in the process of water stirring, putty paste body will have the formation of air, we do not rule out cellulose in the moment of water dissolved gas, but cellulose gas is minimal, putty paste body pores are mostly putty additives chemical Fermentation principle formed, under the premise of additives but not a quantity, the ointment micro-generated expansion pores can improve the tentacles of putty, is conducive to the ease and smoothness of batch scraping, the paste slightly pores will not lead to batch scraping foaming, because scraping plate back and forth to squeeze that very small pores have long been flattened.
Friendship guest, people more powerful
the following is in 2015 should be a QQ friend's commission, he on the putty construction has bubble reasons for experimental insights of some chat records, let me help him publish here, I will copy according to his original record, for not important, it is important that he has the industry research interest and willing to share the spirit.
King, in the forum to see your post about putty powder construction foaming
I personally did a lot of experiments, foaming reasons theoretically many, but in fact on two
first, the grass-roots or the bottom level did not dry on the construction, so there must be foaming, this reason we all know, I do not say
the second situation is more difficult, I really get the answer
Dry, the first round of construction has a little foaming, or no foaming, the second round in the first round of drying after the construction still produces a large number of bubbles
It is well known that the second round of construction is the most important, in putty construction to find a flat front and back effect
bubbles more seriously affect the smoothness of the construction, foaming with you a lot of time
Why the second round of such a serious situation?
That's the problem with the formula and raw materials
In my experiment, I used the exclusion method, the steps are as follows
first with double fly powder with 108 construction, the experiment proved not to foam, then ruled out double fly powder caused bubbles
Prove that there is no bubble, then sweep away the possibility of calcium hydroxide
finally with hppc plus double fly powder calcium hydroxide, since it really foamed
formula is 4 plus 800 plus 200
that is hpmc problem
Why hpmc will be a problem? What's wrong with purity? Not enough? Or is it a inadequate response?
I decisively added 1kg hptc, bubbles since the reduction!
Above conclusion, hmpc water preservation is very important, the majority of the reasons for the blistering is not enough water to cause
Tate what I said to the forum
may help some people
forget to introduce themselves, Guangdong Mercure paint factory
feet long, inch short , each lyrical can make common progress
This is upstairs a friend's reply: dry powder putty construction bubbles are mostly wall rough with air, smallpox (now poured top) the most, brush the first time with heavy calcium powder plus glue batch scraping there are not so many bubbles.
Is right upstairs, because dry powder putty and glue putty material is different, molecular structure is also different, the main material of glue is polyethylene alcohol, its molecular structure is three-dimensional mesh structure, long molecular chain polymer material, while the dry powder putty chemical material is cellulose, its molecular structure is line structure, for high molecular weight short chain molecular chemical material, the two construction contrast, first, due to the glue system Chemical materials are long molecular chain mesh structure, the interaction force between molecules is strong, and the cellulose in the dry powder putty system is a short line-type molecular chain, relatively speaking, the interaction force between molecules is poor, so the physical force of the two at the time of construction is different, the overall compactness of putty after construction is also different, dry powder putty due to cellulose fuse action and expansion characteristics putty after construction formed a porous base surface, compactness is also worse than glue. Second, due to the physical force of the mesh long molecular chain in the glue putty system, so the water locking performance of the glue putty in the construction is better than the cellulose in the dry powder putty, the slower the penetration of putty moisture on the wall surface, the smaller the wall gas discharge force, which is why the glue putty construction foam rate is low factor.
So learn to change, mountains but come to me in the past
the following paragraph of reply is a reply from Hangzhou' net named "Wall Master": "The problem of putty foaming always see in the discussion, in this to my little heart to say, hope to the production of putty powder friends to help, say not to laugh! Welcome to the discussion!
first of all, we can't control the outward exhaust of the walls, so we can only analyze and adjust the structural problems of the product.
the phenomenon of blistering and cracking according to my analysis is mainly manifested in the following aspects:
of the cause of needle-like and crater-like formation: