CPVC composition for granulation-free injection molding
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A technology of CPVC resin and composition, which is applied in the processing field of thermoplastics to achieve the effect of high smoothness and good physical properties
Active Publication Date: 2019-02-26
上海泉恩塑胶有限公司
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[0004] In order to solve the problem in the prior art that the CPVC composition needs to be granulated and preplasticized before injection molding, the purpose of the present invention is to provide a CPVC composition for granulation-free injection molding
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Embodiment 1
[0031] Take 1000 g chlorine content as 66% CPVC resin, 40 g methyl mercaptan organotin stabilizer, 5 g AC-617A, 10 g AC-316A, 50 g impact modifier MBS TH-21, 30 g processing aid K-120P , 10g of antioxidant 1076, 20g of titanium dioxide, put into a high-speed mixer, heat up to 120°C, disperse evenly, discharge into a low-speed mixer and cool to 40°C, then discharge, and inject the obtained material to obtain a product.
Embodiment 2
[0033] Take 1000 g chlorine content as 65% CPVC resin, 50 g butylmercaptan organotin stabilizer, 15 g AC-617A, 5 g AC-316A, 60 g impact modifier MBS TH-21, 50 g processing aid K-120P , 10g of antioxidant 1076, 30g of titanium dioxide, put into a high-speed mixer, heat up to 120°C, disperse evenly, discharge into a low-speed mixer and cool to 40°C, then discharge, and inject the obtained material to obtain a product.
Embodiment 3
[0035] Take 1000 g chlorine content as CPVC resin with 68%, 60 g octyl mercaptan organotin stabilizer, 10 g AC-617A, 15 g AC-316A, 100 g impact modifier MBS TH-21, 60 g processing aid K-120P , 15g of antioxidant 1076, 50g of titanium dioxide, put into a high-speed mixer, heat up to 120°C, disperse evenly, discharge into a low-speed mixer and cool to 40°C, then discharge, and inject the obtained material to obtain a product.
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Abstract
The invention discloses a CPVC composition for granulation-free injection molding. The CPVC composition comprises the following components by weight: 100 parts of CPVC resin, 4-6 parts of a stabilizer, 0.5-1.5 parts of low-density non-oxidized polyethylene wax, 0.5-1.5 parts of high-density oxidized polyethylene wax, 5-10 parts of an impact modifier, 3-6 parts of a processing aid, 1-1.5 parts of an antioxidant and 2-5 parts of a filler. The CPVC composition for granulation-free injection molding in the invention does not need to undergo a granulation procedure and can be directly applied to injection molding to prepare a product with good physical properties and high smoothness.
Description
technical field [0001] The invention relates to the technical field of processing thermoplastics, in particular to a CPVC composition for granulation-free injection molding. Background technique [0002] Chlorinated polyvinyl chloride (CPVC) is a chlorinated product of polyvinyl chloride. It has better physical and chemical properties than polyvinyl chloride. The chlorine content of ordinary polyvinyl chloride (PVC) molecules is about 58%. Chlorinated polyvinyl chloride (CPVC) The chlorine content of the vinyl chloride molecule is 64-68%. The increased chlorine content improves the combustion-supporting and smoke-producing properties of PVC, increases the tensile strength and modulus, and retains its original good properties: outstanding dimensional stability, excellent chemical resistance and weather resistance , and good dielectric properties. However, CPVC melt has the problem of high viscosity and is easy to decompose, which greatly increases the processing difficulty ...
Claims
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Application Information
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