CPVC composition for granulation-free injection molding

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

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

CN109385016AActive Publication Date: 2019-02-26上海泉恩塑胶有限公司
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Examples

Experimental program
Comparison scheme
Effect test

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

Patent Timeline
26 Feb 2019
Publication
CN109385016A
IPC
C08L23/28; C08L23/06; C08L23/30; C08L33/12; C08L51/04; C08K5/58; C08K5/134; C08K3/22
CPC
C08K2003/2241; C08L23/286; C08L2205/02; C08L2205/035; C08L2207/066; C08L23/06; C08L23/30; C08L33/12
Inventors
姚敏捷; 邱圣