1 The source and performance of the raw material is a time point, the temperature change is recorded, and the temperature rise-down curve is drawn, and each group is tested 3 times. The test situation is as follows: the test block thermal insulation test is indicated. 4.1 The first temperature rise and cool down test room temperature 25! The two groups were simultaneously energized and heated, and the temperature was observed every 10 minutes. When warming for 10 minutes, group A is from 25!
Rose to 72! , group B from 25! Rose to 62! At this time, both groups began to take hot air. It shows that both test blocks contain a lot of water. Continue to heat up, group A to 40~50! /10 minutes rise, reach 195 in 40 minutes! , group B is 10~20!
/10 minutes to heat up, 40 minutes to reach 117! , heat group A to 195! Stop, group B continues until the temperature reaches 140! . The feeling of touching the outside by hand is that the temperature of group B reaches 80! It is obviously hot when it is used; the temperature in Group A is 190! Only when there is a slight heat. Cool down at 100! The above is 10 minutes as the timing point, 100! The following is a 20-minute time point. Test 2.4.2 The second temperature rise-down temperature test The first temperature rise-down temperature test Since both test blocks contain a large amount of water, the water is basically removed after the first heating. The temperature of the chamber to be tested is lowered to room temperature, and the second temperature rise and one temperature drop test are carried out. The temperature rise is also measured at 10 minutes, and the temperature drop is also at 100! Take 10 minutes as the timing point, at 100! The time is 20 minutes. See the test results.
2.4.3 The third temperature rise-down temperature test The third temperature rise-down temperature test was carried out on the basis of the last two tests, room temperature 25! , the different temperature rises only to 100! The timing point is changed to 5 minutes, and the cooling is still a timing point every 20 minutes. See the test results.
The method is the same as Group A and Group B. The result is that the overall temperature-heating curve has the same trend. The difference is that the A" group is compared with the B" group. The difference between the temperature rise and the temperature drop is 10! Left and right, it shows that the heat preservation and heat insulation performance of Group A is better. The difference between the temperature rise and the temperature drop of A group and B group is very small, less than 2! It shows that the insulation effect of group A and group A is basically the same.
The lightweight test block and the ordinary test block were respectively subjected to compression test. Each group was subjected to two parallel pressure tests. The results showed that the average maximum pressure capacity of the test block of group A was 6.05 kN, and the average maximum pressure of the test block of group B was the maximum. The capacity is 11.08kN, and the compression capacity is nearly doubled. Group B but the pressure in the test piece during almost no deformation, breakage immediately after reaching the ultimate compressive strength; and the group A in the pressure during the test piece there is significant deformation, the thickness thereof is gradually reduced from the beginning 115mm, although the intermediate structure destruction, crack but not broken until the pressure until a complete breakdown of 27.6mm; average maximum pressure capability of the test piece of light is the same group a 5.76kW, B "group average maximum loading capacity test block is 10.89kW the ordinary light and the coupons were weighed test piece quality comparison test were 3 replicates each weighing result is A group average weight 8.61kg, the relative density of 848kg / m3;.. an average weight of group B 16.67kg, the relative density of 2268kg / m3, a group average weight: 6.39kg, the relative density of 689kg / m3; B "group, the average weight of 22.49kg, the relative density of 2215kg / m3, the relative density of the test piece than the visible light Common more than two thirds of the small test piece.
From the three temperature rise and one temperature drop curves, it can be seen that the ordinary test block heats up slowly and the temperature drop is fast; the light test block is just the opposite, the temperature rises quickly, the temperature drop is slow, and the heat transfer is not obvious, so the thermal insulation performance of the light test block is good. The reason for this effect are mainly two First, Second, structural material. The aggregates in the ordinary test block are conventional sand and pebbles, which are materials with high density, good thermal conductivity and fast heat transfer; while the foam in the lightweight test block has a small thermal conductivity and is a heat insulating material, and the slag itself is also Thermal insulation material, slow heat dissipation. From the structural analysis, the ordinary test block structure is dense, the pores are relatively light and thin, and the slag itself is porous. The aggregate itself is irregular and angular, which is loose relative to each other and does not easily form air convection heat exchange. . Even if the heat enters the test block, it will be absorbed by the porous material in a large amount, so the heat insulation effect of the light test block is much better than that of the ordinary test block.
The slag and foam plastic are used to replace the sand and the pebbles as the aggregate, and the cement is used as the cementing material to make the lightweight test block. The bonding strength of each interface is good, and the whole body can be formed into a whole body, and has a certain pressure bearing capacity and rigidity. It can be seen from the pressure test that although the pressure capacity of the lightweight test block is lower than that of the ordinary test block, the strength of the block for the roof insulation board and the non-bearing wall is sufficient. At the same time, due to the good deformability, the impact of the general impact and vibration force can be suppressed and the structure will not be greatly damaged.
1 Lightweight thermal insulation building materials made of foam and slag in “three wastes†are the main materials. The main performance is that the thermal insulation performance is obviously superior to the traditional ordinary concrete; the pressure bearing capacity can meet the pressure requirements of the roof insulation board and the non-load bearing wall block, which can reduce about two-fifths of the building's own weight. Bookmark8 2 This lightweight thermal insulation building material can also be used in other industries, such as chemical, urban heating and other heating pipes, as an insulation surface, that is, economical and applicable.
3 This kind of test product that turns waste into profit is not only in line with the national environmental protection policy, but also meets the requirements of building thermal insulation. It can produce good social and economic benefits and is worthy of promotion and application.
Shanghai Jinhao Endurance Co., Ltd. bookmark9 passed ISO9001: 2000 quality management system certification through 1SOI4001:19% environmental management system certification Shanghai Jinshu Rouge Haowei Youjian Company is from the powder East polymer materials research, production, sales and technology Professional production company for services.
Shanghai Jinshu Resin Co., Ltd. has carried out technical cooperation and product innovation with many well-known universities and research institutes in China, and has developed the industry-leading end-end polyxene olefins and poly-zinc. The olefin powder, the polypropylene powder, the I powder, and the rubber powder are not the final polymer materials. Some products complement the main products in the blank: cold-soluble polyethylene 1 [PVA] powder series products: PVA-17, PVA24A, etc. This product has the characteristics of melting in f warm water: widely used in grid chemistry Additives for dry seeds and dry silt in building materials: porcelain-bonded powdered stone enamelling agent; finishing agent for coatings, textile pulp, adhesives, paper and paper processing, etc. Series products; suitable for the production of a polyethylene, polyzene pipes, filter materials (for pipe); equipment, pipe surface roller coating and electrostatic spraying and textile surface treatment.
Polypropylene powder 1 polymer powder, rubber powder and other polymer tree material products, Thailand to meet the needs of customers, the company undertakes a variety of resin materials processing.
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HuiJie Steel Pipe Manufacturing bearing tubes from OD6mm till 128mm,cold finished bearing inner and outer rings,We have 28 cold rolling pilgersand 25 cold drawing lines,Our monthly output 5,000 tons of bearing Steel Tubes/Gearing Steel Tube,produce as chinese and international standard:
1)Chinese GB/T 18254 Materials GCr15 bearing tubes
2)USA ASTM A295 Materials 52100 bearing tubes
3)Germany DIN17230 Materials 100Cr2/100Cr6/100CrMo7-3
4)Japan JIS G4805 Materials SUJ1/SUJ2/SUJ3/SUJ4/SUJ5
5)UK BS 970 Materials EN31(535A99)
6)ISO 683-17 Materials 100Cr6,8620H,16MnCr5,20MnCr5.
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