Optical cable foaming packing gasket granule material and method for producing same

A foam filling and production method technology, applied in the field of granular materials, can solve the problems of high cost of raw materials, heavy weight of filling rope, no data reports on the production of granular materials, and the availability of real products on the market, and achieve the effect of low raw material cost and good protection effect

Inactive Publication Date: 2009-03-11
龙泽飞
1 Cites 23 Cited by

AI-Extracted Technical Summary

Problems solved by technology

However, these filling ropes made of calcium carbonate and polypropylene are solid ropes. The amount of polypropylene and other raw materials is large, the weight of the filling rope itself is large, the hardness is large, and the cushioning against external forces is poor, so there are high raw material costs and high pro...
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Abstract

The invention relates to an optical cable foaming packing gasket granule and a manufacturing method thereof; the mixture ratio of the materials and the weight parts are: 50-60 parts of low density and high pressure polyethylene, 15-25 parts of high density and low pressure polyethylene, 10-30 parts of polypropylene, 0.5-1.5 parts of Tissuemat E, 0.5-1.5 parts of stearic acid, 0.4-1.2 parts of calcium stearate and 0.4-1.2 parts of four pentaerythritol fat which are prepared by heating kneading, extrusion, cooling, drying and grain-sized dicing. The granule has the density of 0.944 plus or minus 0.015g/cm<3>, tensile-strength of being more than or equal to 20MPa, the elongation of break of being more than or equal to 580 percent, the electric volume resistivity of being more than or equal to 1.0 multiplied by 10 <13> Omega m, the oxidation induced period of being more than or equal to 30 min, the solution moving speed of being less than or equal to 2.0g/10min and moisture of being less than or equal to 0.08 percent. The granule is prepared by three steps of mixing and kneading of material, fusing and extruding strip formation of the kneaded objects and cooling and grain-sized dicing of the strip, is exclusively used for preparing the material of optical cable foaming packing gasket, and has the advantages of light weight, saving material, being applicable to foaming and joint connection with PBT plastic, and the like.

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  • Optical cable foaming packing gasket granule material and method for producing same

Examples

  • Experimental program(1)

Example Embodiment

[0012] Example 1 (Compare with the corresponding raw materials, parts by weight, and temperature value in the above table): 55 parts of low-density high-pressure polyethylene, 20 parts of high-density low-pressure polyethylene, 20 parts of polypropylene, 1 part of polyethylene wax, 1 part of stearin Acid, 0.8 parts of calcium stearate, and 0.8 parts of pentaerythritol fat are mixed together in a kneader to control the temperature to 90°C and knead uniformly to form a kneaded product, and then feed the kneaded product into the twin-screw extruder. The temperature of each heating ring arranged in the machine is controlled from low to high to 200°—300°C, extruded into a Φ3mm strip, and then enters the cooling tank to cool, dry, and cut into a length of 3mm. The particles of Φ2.5mm (shrinking due to cold) can be inspected and packaged.
[0013] Examples 2-8 all compare the corresponding raw materials, proportions by weight, and kneading temperature in the table, and granulate in the same way as in Example 1. It should be noted that there are no strict requirements on the length and diameter Φ of the cut particles, and the particle size can be determined according to needs. The conventional particle size shown in this application is shown. The granular material is milky white, the color of the granule after adding the color masterbatch is the same as that of the color masterbatch, and the particle size is required to be uniform without adhesion of more than three particles. In the eight examples, the temperature of each heating ring arranged in a row in the extruder is also set from low to high to be 200°-300°C. Among the examples, Examples 2 and 7 are preferred.
[0014] The fiber-optic cable foaming and filling rope manufacturer uses this granular material and foaming agent such as four seasons pentaerythritol ester or triphosphite, etc. to mix in proportion to make the foaming filling rope body, and then cover the PBT film.
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the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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