CN104861344A - Modified polyvinyl chloride tube - Google Patents

Abstract

The invention discloses a modified polyvinyl chloride tube. The modified polyvinyl chloride tube comprises, by mass, 57-80% of polyvinyl chloride, 5-8% of dioctyl phthalate, 4-10% of light calcium carbonate, 4-6% of ethylene-octylene copolymer, 2-5% of methacrylate-acrylate copolymer, 2-5% of an environmentally friendly fire retardant, 1-3% of an antistatic agent HKD-912, 0.5-2% of a light stabilizer UV-326, 0.5-1.5% of a calcium and zinc composite stabilizer, 0.5-1% of barium stearate, 0.1-1% of carbodiimide, 0.1-0.5% of gamma-aminopropyltrimethoxy silane and 0.1-0.5% of an antioxidant 1010. The modified polyvinyl chloride tube has the advantages of good mechanical performances, high ring stiffness, good fire retardation property, strong ageing resistance, stable performances, low cost, good corrosion resistance, good cost performance, very good market competitiveness and easy popularization and application.

Description

A kind of modified polychloroethylene pipes

Technical field

The present invention relates to plastic pipe technical field, specifically a kind of modified polychloroethylene pipes.

Background technology

Polyvinyl chloride (PVC) is one of five large resins for universal use, its output is only second to polyethylene (PE), because polyvinyl chloride has the advantages such as chemical proofing is high, electrical insulation capability good, physical and chemical performance is stable, cheap, be widely used in the raw material on tubing, electric wire, floor etc. at present.But the problems such as when using as tubing, the thermostability of polyvinyl chloride is bad, ring stiffness is not high, mechanical property is not strong, poor fire, will significantly limit its range of application.

Summary of the invention

The object of the present invention is to provide that a kind of stable performance, intensity are high, the modified polychloroethylene pipes of good flame resistance.

The technical solution adopted for the present invention to solve the technical problems is: a kind of modified polychloroethylene pipes, its component by mass percent proportioning is: polyvinyl chloride 57% ~ 80%, dioctyl phthalate (DOP) 5% ~ 8%, light calcium carbonate 4% ~ 10%, ethylene-octene copolymer 4% ~ 6%, Methylacrylate-Acrylate Copolymer 2% ~ 5%, environmental protection fire retarding agent 2% ~ 5%, static inhibitor HKD-912 1% ~ 3%, photostabilizer UV-326 0.5% ~ 2%, calcium-zinc composite stabilizing agent 0.5% ~ 1.5%, barium stearate 0.5% ~ 1%, carbodiimide 0.1% ~ 1%, γ-aminopropyltrimethoxysilane 0.1% ~ 0.5%, antioxidant 1010 0.1% ~ 0.5%.

The mean polymerisation degree of described polyvinyl chloride 800 ~ 1200, weight-average molecular weight is in 50000 ~ 120000 scopes.

Described environmental protection fire retarding agent is the polydimethylsiloxane of mass ratio 5 ~ 10:1 and the compound of phenylbenzene sulfuryl potassium sulfonate.

The preparation method of above-mentioned a kind of modified polychloroethylene pipes, comprises the following steps:

(1), take dry light calcium carbonate by weight ratio and add barrel temperature in the high-speed mixer of 80 DEG C ~ 120 DEG C, add the γ-aminopropyltrimethoxysilane taken by weight ratio again, according to rotating speed 3000 ~ 6000r//min high-speed stirring 20 ~ 50min, when being then cooled to lower than less than 40 DEG C, discharging is stand-by;

(2), polyvinyl chloride, dioctyl phthalate (DOP) and calcium-zinc composite stabilizing agent is taken by weight ratio, and add barrel temperature successively in the mixing machine of 80 DEG C ~ 90 DEG C, after stirring 20 ~ 30min according to rotating speed 50 ~ 100r//min, add the product that step (1) obtains, then add other component, make to continue stirring 20 ~ 40min together, to be mixed evenly after, discharging adds the mixing rear extrusion moulding of twin screw extruder and makes tubing, namely obtains described a kind of modified polychloroethylene pipes.

The invention has the beneficial effects as follows, the present invention has that mechanical property is good, ring stiffness is high, good flame resistance, ageing resistance are strong, steady performance, and cost is low, good corrosion resistance, thus there is good cost performance and the good market competitiveness, be easy to apply.

Embodiment

Technical scheme of the present invention is further illustrated below in conjunction with concrete preferred embodiment.

Embodiment 1:

A kind of modified polychloroethylene pipes, its component by mass percent proportioning is: polyvinyl chloride 57%, dioctyl phthalate (DOP) 8%, light calcium carbonate 10%, ethylene-octene copolymer 6%, Methylacrylate-Acrylate Copolymer 5%, environmental protection fire retarding agent 5%, static inhibitor HKD-912 3%, photostabilizer UV-326 2%, calcium-zinc composite stabilizing agent 1%, barium stearate 1%, carbodiimide 1%, γ-aminopropyltrimethoxysilane 0.5%, antioxidant 1010 0.5%, described environmental protection fire retarding agent is the polydimethylsiloxane of mass ratio 5:1 and the compound of phenylbenzene sulfuryl potassium sulfonate.

Preparation method: (1), take dry light calcium carbonate by weight ratio and add barrel temperature in the high-speed mixer of 80 DEG C ~ 120 DEG C, add the γ-aminopropyltrimethoxysilane taken by weight ratio again, according to rotating speed 3000 ~ 6000r//min high-speed stirring 20 ~ 50min, when being then cooled to lower than less than 40 DEG C, discharging is stand-by; (2), polyvinyl chloride, dioctyl phthalate (DOP) and calcium-zinc composite stabilizing agent is taken by weight ratio, and add barrel temperature successively in the mixing machine of 80 DEG C ~ 90 DEG C, after stirring 20 ~ 30min according to rotating speed 50 ~ 100r//min, add the product that step (1) obtains, then add other component, make to continue stirring 20 ~ 40min together, to be mixed evenly after, discharging adds the mixing rear extrusion moulding of twin screw extruder and makes tubing, namely obtains described a kind of modified polychloroethylene pipes.

Embodiment 2:

A kind of modified polychloroethylene pipes, its component by mass percent proportioning is: polyvinyl chloride 80%, dioctyl phthalate (DOP) 5%, light calcium carbonate 4%, ethylene-octene copolymer 4%, Methylacrylate-Acrylate Copolymer 2%, environmental protection fire retarding agent 2%, static inhibitor HKD-912 1%, photostabilizer UV-326 0.5%, calcium-zinc composite stabilizing agent 0.5%, barium stearate 0.5%, carbodiimide 0.3%, γ-aminopropyltrimethoxysilane 0.1%, antioxidant 1010 0.1%, described environmental protection fire retarding agent is the polydimethylsiloxane of mass ratio 10:1 and the compound of phenylbenzene sulfuryl potassium sulfonate.

Preparation method: (1), take dry light calcium carbonate by weight ratio and add barrel temperature in the high-speed mixer of 80 DEG C ~ 120 DEG C, add the γ-aminopropyltrimethoxysilane taken by weight ratio again, according to rotating speed 3000 ~ 6000r//min high-speed stirring 20 ~ 50min, when being then cooled to lower than less than 40 DEG C, discharging is stand-by; (2), polyvinyl chloride, dioctyl phthalate (DOP) and calcium-zinc composite stabilizing agent is taken by weight ratio, and add barrel temperature successively in the mixing machine of 80 DEG C ~ 90 DEG C, after stirring 20 ~ 30min according to rotating speed 50 ~ 100r//min, add the product that step (1) obtains, then add other component, make to continue stirring 20 ~ 40min together, to be mixed evenly after, discharging adds the mixing rear extrusion moulding of twin screw extruder and makes tubing, namely obtains described a kind of modified polychloroethylene pipes.

Claims (3)

1. a modified polychloroethylene pipes, it is characterized in that, its component by mass percent proportioning is: polyvinyl chloride 57% ~ 80%, dioctyl phthalate (DOP) 5% ~ 8%, light calcium carbonate 4% ~ 10%, ethylene-octene copolymer 4% ~ 6%, Methylacrylate-Acrylate Copolymer 2% ~ 5%, environmental protection fire retarding agent 2% ~ 5%, static inhibitor HKD-912 1% ~ 3%, photostabilizer UV-326 0.5% ~ 2%, calcium-zinc composite stabilizing agent 0.5% ~ 1.5%, barium stearate 0.5% ~ 1%, carbodiimide 0.1% ~ 1%, γ-aminopropyltrimethoxysilane 0.1% ~ 0.5%, antioxidant 1010 0.1% ~ 0.5%.

2. a kind of modified polychloroethylene pipes according to claim 1, is characterized in that, described environmental protection fire retarding agent is the polydimethylsiloxane of mass ratio 5 ~ 10:1 and the compound of phenylbenzene sulfuryl potassium sulfonate.

3. the preparation method of a kind of modified polychloroethylene pipes according to claim 1, is characterized in that, comprise the following steps:

(1), take dry light calcium carbonate by weight ratio and add barrel temperature in the high-speed mixer of 80 DEG C ~ 120 DEG C, add the γ-aminopropyltrimethoxysilane taken by weight ratio again, according to rotating speed 3000 ~ 6000r//min high-speed stirring 20 ~ 50min, when being then cooled to lower than less than 40 DEG C, discharging is stand-by;

(2), polyvinyl chloride, dioctyl phthalate (DOP) and calcium-zinc composite stabilizing agent is taken by weight ratio, and add barrel temperature successively in the mixing machine of 80 DEG C ~ 90 DEG C, after stirring 20 ~ 30min according to rotating speed 50 ~ 100r//min, add the product that step (1) obtains, then add other component, make to continue stirring 20 ~ 40min together, to be mixed evenly after, discharging adds the mixing rear extrusion moulding of twin screw extruder and makes tubing, namely obtains described a kind of modified polychloroethylene pipes.