Resin for injection moulding and product thereof
A resin and product technology, applied in the field of polymer materials, can solve the problems of corroding processing equipment that affect product quality, unable to complete injection molding work, and high injection rate.
Inactive Publication Date: 2007-02-28
卢克锋
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Problems solved by technology
However, its disadvantage is that its melt viscosity is at least 2 to 3 times that of polyvinyl chloride, and the fluidity of the melt is very poor, which makes it thermally decompose because it is not easy to flow during processing, and produces a large amount of hydrogen chloride gas, which is difficult to process. Large, affecting product quality and corroding processing equipment
When the injection molding process is used to process products, the fluidity requirements of the melt are higher than those of the extrusion process, because the pre-molded material fills the cavity through the nozzle in an instant, and the injection rate is relatively high. If the fluidity of the material is not good, it cannot be processed. Complete the injection work
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 1
[0037] It is produced by the aqueous phase suspension method. Take polyvinyl chloride resin with an average degree of polymerization of 500, put it into a reaction kettle, control the reaction temperature N±10°C, and the reaction pressure 0.3±0.1Mpa. Under the light of ultraviolet light, the reaction time is 8 Hours, the chlorine content in its high-performance chlorinated polyvinyl chloride injection molding resin was 63±2%.
Embodiment 2
[0039] It is produced by aqueous phase suspension method. Take polyvinyl chloride resin with an average degree of polymerization of 1000, put it into a reactor, control the reaction temperature at 70±10°C, and the reaction pressure at 11±0.1Mpa. Under the light of ultraviolet light, the reaction time is 8 Hours, the chlorine content in its high-performance chlorinated polyvinyl chloride injection molding resin is 70±2%.
[0040] Products made of high performance chlorinated polyvinyl chloride injection molding resin.
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Abstract
The invention discloses a macromolecule material, which relate to chlorinated polyvinyl chloride pitch and component of product, process-control parameter and physical property. The technical problem of invention to resolve is: providing a better flow ability, lower melt viscosity, chlorinated polyvinyl chloride pitch with specialized in injection moulding craft manufacture and craft parameter with producing this pitch; providing key component of this pitch and craft parameter.
Description
(1) Technical field [0001] The invention belongs to macromolecular materials, and relates to composition, process control parameters and physical properties of chlorinated polyvinyl chloride resin and its products. (2) Background technology [0002] The current plastic products are mainly polyvinyl chloride (PVC), polyethylene (PE), ABS, etc. However, the main defect of polyvinyl chloride is that the heat-resistant temperature is not high, and the long-term working temperature cannot exceed 60°C, and as the temperature increases, its overall performance will decline. Its oxygen index is 35-38%. Good flame self-extinguishing performance, but the smoke index is high, so it cannot be used for the transportation of high-temperature and strong corrosive media and the occasions with fire protection requirements; the biggest disadvantage of polyethylene is that it cannot be flame-retardant, and the material itself will burn after burning. With flame dripping, in addition, its mech...
Claims
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IPC IPC(8): C08F114/06C08F8/20B29C45/00
Inventor 卢克锋
Owner 卢克锋