Preparation method for material special for polythene PE/waste and old tire glue powder
A technology of waste tires and polyethylene, applied in the product field, can solve the problems of poor comprehensive properties of rubber powder/PE blend materials, difficulty in ensuring reactive modification, and affecting mechanical properties of output, so as to improve mechanical properties and improve mechanical properties , the effect of high production efficiency
Inactive Publication Date: 2009-02-18
JIANGSU POLYTECHNIC UNIVERSITY +1
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Problems solved by technology
[0004] To sum up, the comprehensive performance of the rubber powder / PE blend materials studied at present is poor and cannot meet the requirements of practical applications. The main reasons are: first, the preparation of blends using an open mill is an open process The shear strength of the rubber powder is not enough, and the particle size of the rubber powder cannot be refined enough, which will affect the yield and improve the mechanical properties; second, the treatment of the rubber powder is not in place; third, it is difficult to ensure the reactivity of the blend under this process Fourth, to obtain a rubber powder / PE blend material with excellent comprehensive mechanical properties and low cost, the material formula is not reasonable
Method used
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[0023] The preparation process of the embodiment of the present invention is:
[0024] (1) Drying of waste tire rubber powder
[0025] Dry the rubber powder moderately at 70°C for 2 hours.
[0026] (2) Mixing
[0027] Add the dried rubber powder and high-efficiency powder regeneration activator into the high-speed mixer, and stir at a high speed for 5-10 minutes at a temperature of 70-100°C. After cooling to below 50°C, put the mechanically mixed Add PE, reactants, and compatibilizers into the high-speed mixer and continue mixing at high speed for 5-10 minutes, then take them out for use.
[0028] (3) Extrusion granulation
[0029] The uniformly mixed material is extruded and granulated in a twin-screw extruder. The processing temperature range is 120-200°C, the screw speed is 30-60r / min, the feeding speed is 25-50r / min; heat-cut or air-cooled granulation is used for extrusion granulation.
[0030] The formulas of the examples are shown in Table 2, and the properties of t...
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Abstract
The invention relates to a formula and a process for producing special PE / waste tyre gelatine powder materials. High-efficient recovered powdery activator is adopted to properly activate the surface of the gelatine powder; then, proper amount of reactant and compatibilizer are added to mix with PE, and the materials react with each other and are blended and extruded out, and finally the special PE / waste tyre gelatine powder with excellent comprehensive performance is achieved. The raw materials include: PE which comprises LDPE, HDPE and reclaimed PE, and the like; waste tyre gelatine powder (grain size: 40-100 meshes); high-efficient recovered powdery activator WR510; the reactor and compatibilizer which are dicumyl peroxide (DCP) and maleic anhydride (MAH) or PE-g-MAH; antioxidant 1010 and antioxidant 168. The invention has the advantages of high pressure, high temperature, strong shearing, airtightness, high production efficiency, environment friendly features, relatively low production cost, and the special PE / waste tyre gelatine powder materials made by the method can meet the requirements of actual engineering.
Description
technical field [0001] The invention relates to a preparation method of polyethylene PE / waste tire rubber powder special material, which is used for urban drainage HDPE pipes and other products. Background technique [0002] With the rapid development of the automobile industry, a large number of waste tires are produced, and waste rubber is a thermosetting polymer material, which is difficult to degrade after being discarded, and is easy to form serious black pollution and fire hazards. Therefore, the recycling and processing technology of waste tires has become a worldwide problem, and processing waste tire rubber into rubber powder by mechanical means is the most important way of recycling waste tires. Rubber powder can be directly used as a filler in rubber or plastic products, and can also be used as a modified material in high-speed road paving and modified plastics. Domestic and foreign scholars have also done related research on plastic modification with rubber powd...
Claims
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IPC IPC(8): C08L23/06C08L17/00C08L51/06C08K5/14C08K5/134C08K5/526B29B9/12B29C47/92B29C48/40B29C48/92
CPCB29C47/92B29C48/92B29C2948/92704B29C48/04B29C48/40B29C2948/9259B29C2948/92885B29C2948/92895
Inventor 陶国良俞卫忠赖铭
Owner JIANGSU POLYTECHNIC UNIVERSITY
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