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Atactic polypropylene has decreased density, melting level and softening temperature when compared to the crystalline types and it is tacky and rubber-like at room temperature.
The melting level of polypropylene takes place in a spread, And so the melting position is determined by finding the highest temperature of a differential scanning calorimetry chart. Completely isotactic PP provides a melting level of 171 °C (340 °File).
two, hollow glass product of construction, can't change the size, gap assembly hollow glass really should be rectangular and vertical, concentrate to examine the accuracy of its specification.
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The outside sealing construction glue as the two sealant, in order that the insulating glass has ample structural strength.
Borosilicate Glass: Recognized for its sturdiness and resistance to thermal shock, borosilicate hollow glass is commonly used in laboratory products and kitchenware, for example measuring cylinders and casserole dishes.
"The inadequate insulation overall performance of double glass, often resulting from flooding fog interlayer because of air vapor, even a moldy, so some companies will often be used in between two items of glass with aluminum in aluminum strip with holes, pores around the granular desiccant" processing "procedure, in reality only A short lived include, didn't elevate any insulation efficiency of double glass desiccant, quite a while after the failure, or betray.
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1. Pharmaceutical and Chemical Industries: Hollow glass is favored for its inert Houses, not reacting Using the substances it has, Therefore guaranteeing safety and integrity in chemical reactions and storage.
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Superplasticizers are used when effectively-dispersed cement particle suspensions are required to Enhance the move features (rheology) of concrete. Their addition enables to minimize the water-to-cement ratio of concrete or mortar without having negatively influencing the workability from the mixture. It allows the creation of self-consolidating concrete and high-functionality concrete.
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L'introduction d'additifs retardateurs permet de réduire la creation de chaleur et d'empêcher la formation de fissures pendant le durcissement du béton lors de la gypsum retarder applications construction d'ouvrages hydrauliques.