I managed to get some transcript of the video and use words to translated as following for sharing:
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Under our previous silicone grease horizontal review, many friends have mentioned that silicone grease should do aging tests, of course, we consider this problem, after just after doing the horizontal review, we will start the next round of tests after just finishing the silicone grease.
But how to do this aging test we just started with no clue, we went to see if there is a standard or something, a check is true, we tested with reference to the silicone grease chemical industry standard (, our test refers to the silicone grease chemical industry standard (HG / T 2502 -93) and lubricating grease steel mesh oil separation method (cone method). (SH-T 0324-2010), of course, it is impossible to copy, according to the standard each silicone grease is measured with 10 grams to measure the money bag will be broken, the silicone grease will use 10 grams to measure the money bag will be broken.
What we tested this time included the grease's oil dispersion, volatile content, and how the grease compared before and after the aging test. Oil separation is the amount of silicone oil precipitation that is maintained at 200 °C for 24 hours; Volatile volatile content refers to the ratio of the volatile mass of the substance to the total mass.
The aging test is actually to put the silicone grease into the incubator and bake it at a high temperature of 200 degrees24 Wait for hours, wait for cooling, remove the baked grease and do another performance test to see how much it will drop. And with each BBQ test, see how much it will drop. Before and after each barbecue, we weigh the cone mesh and the entire container to calculate the oil separation and volatile content of the silicone grease. For the sake of the sake of the test are carried out in time, plus weekends and holidays, the most measured weekends and , each maximum test of three silicone greases, so this aging test is done for three months.
Honeywell PTM7950-SP this phase change silicone grease, it will be heated after the viscosity will be reduced, silicone grease directly through the filter into this state, so it is impossible to oil separation and volatile content can not be calculated at all Can not calculate It is impossible to calculate oil separation Volatile content can not be calculated at all.
Silver Grease and Wind Chaser Ph-ndc have obvious oil droplets on their beakers, Gold Grease, Shin-Etsu 7921 , Arctique MX-4 There are also traces of oil on the beaker, but the amount is small and cannot be measured, according to the calculation of the formula, but the amount is small can not be measured, according to the calculation of the formula, , too little can not be measured, according to the formula calculation, 1,79 %, 1,18 % pour PH-NDC, 1,18 %, 0 et 0 percentage.
Volatiles include the oil that is baked and the gases that volatilize at high temperatures, and each silicone grease grill can basically smell a refreshing smell when opening the beaker, which is the smell of the calculation formula caused by the volatiles, which are caused by volatiles. Calculate Formula Formula as follows:
The volatile content of each silicone grease is shown in the following table, with Limin TFX having the largest volatile content, followed by silver silicone grease.
Of course, everyone should know that some silicone grease will dry out and harden after a long time, and we will definitely have silicone grease top in high-temperature baking, and there will be roughly three kinds of baking
The first is to completely harden like cement, or the silicone oil basically evaporates into sand particles, which is completely impossible to follow up
Fully hardened silicone greases include Kyushu Aeolian EX750 , Shin-Etsu 7921 , Lee Min TF7 , TFX , Yajun W15II , while Gold Silicone Grease and Cool Extreme CF14 It becomes, and there are some signs of surface hardening. It becomes, and there are some signs of surface hardening.
Among so many silicone greases, the Dow Corning Tao Xi TC-5888 is the one that has the least change before and after baking, with almost no change in consistency and also odor when baking. When it is baked, it also emits an odor. It was baked after the temperature rose by 1.5 degrees compared to before.
Honeywell ptm7950-sp This phase change silicone grease becomes more like clay and can even be played directly in the hand, but it is a phase change silicone grease, which will become soft after heating, and the temperature after baking will become softer than after being heated before, and the temperature after baking will rise by 2.2 degrees compared with before.
Violent Bear Ke This red butter did not fade after being baked at high temperatures, the viscosity was slightly increased but the fluidity was still good, and the baking temperature was 1,2 degrees higher than before.
The blue color of Refroidissement de la poubelle kpx turns quite white after baking, and after baking, the stuff is closer to the colloid, and the temperature is basically different from before, which is a fairly stable product. Basic variations, a fairly product product. Basically, it is a fairly stable product.
Shingoe GK5 is in a state close to clay after baking, but still has good fluidity and plasticity, and its temperature changes after baking
After the owl NT-H2 is roasted, the viscosity is quite high, and it will not stick much even on the hand, and the temperature has risen by 1.7 degrees compared with before.
The high conduct GD007 becomes extremely viscous after baking and shows some signs of chunks, but it is no problem to continue to use it, and the temperature rises from 4.4
After the wind chaser Ph-ndc is baked, it becomes too viscous, although it is still gelatinous, but there is not much fluidity, and it is impossible to fill the loose filling and heating base on the top, resulting in abnormal filling of the radiator heating base, resulting in abnormally elevated test results.
The third is between the two, the surface is hardened but there is still a certain degree of fluidity inside, and mixing in these dry and hard parts may affect the fit of the heater, resulting in a serious decline in test results. Affects the fit of the loose, resulting in a serious decline in the test.
After the Arctique mx-4 is baked, it is a bit like flowing chocolate, the outside is crisp and the inside still has good fluidity, but we can't take out these shells very well, and the results are very abnormal... Very much to remove these fragments, test for exceptions Anomalies Anomalies.
The overclocking triple GT-3 is also surface hardened, but the interior has also become very viscous, and it is impossible to judge whether it is the cause that has a greater impact and a greater impact, and it is impossible to judge that the effect is greater and the impact is greater
Of the 18 types of grease tested, only 11 were tested after baking, and only 8 were available The test results of the model are normal, and the elimination rate is quite high. In fact, the obvious conclusion is quite high. A very obvious conclusion is that it is high, in fact, it is very obvious that the completely hardened silicone greases are basically very dry, indicating that their silicone oil content is small, and it is easy to clean at high temperatures. , the content is not so easy to dry completely.
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Theoretically, the less the silicone grease silicone oil content, the more thermal conductive material content, but this and its final thermal conductivity absolute relationship, is related to its viscosity, the more viscosity of silicone oil, the lower the viscosity, the more silicone grease, the more viscosity of silicone oil, the lower the viscosity, The better the silicone grease is coated, the slower the evaporation rate of the silicone oil and the slower the rate of hardening of the silicone grease.
What needs to be particularly mentioned is that the impact of silicone grease hardening in daily use is actually not as serious as our test results, because when installing and installing the radiator, it is pressed tightly, and the silicone grease is silicone oil Silicone oil volatilization, but the residue is pressed tightly, drying is silicone oil Silicone oil volatilization, but the residual solid will still remain in a fit state, and the substance responsible for heat conduction is still there. Thermal conductivity may deteriorate slightly and will not become an insulating layer.
The best performance stability in this test was coldage de pelouse king kpx , which is really expensive, followed by Shin-Etsu GK5 The stability is also very good, the last test test showed a very cost-effective high conductivity, the last test showed a very cost-effective high conductivity, stability In fact, the test test in the performance of the extremely cost-effective high conductivity high conductivity stability Stability is actually acceptable, worthy of its price.
Those dried grease are actually many of the top products in the last test, the pursuit of performance is still silicone grease silicone grease is better, drying situation situation in fact, wipe off the silicone grease to apply once on the good situation a handful of silicone grease wiped off painted one is good a tube of 2 grams of silicone grease is actually enough for you to apply two to three times.