CN104448607B

CN104448607B - A kind of high fire prevention PVC-U pipe and preparation method thereof

Info

Publication number: CN104448607B
Application number: CN201410619038.7A
Authority: CN
Inventors: 李统; 李统一; 周平
Original assignee: Liansu (hebei) Co Ltd Municipal Pipeline
Current assignee: Liansu (hebei) Co Ltd Municipal Pipeline
Priority date: 2014-11-06
Filing date: 2014-11-06
Publication date: 2016-08-24
Anticipated expiration: 2034-11-06
Also published as: CN104448607A

Abstract

The present invention relates to a kind of high fire prevention PVC U pipe and preparation method thereof, described high fire prevention PVC U pipe uses the compound of zinc molybdenum silicon compound and nano-aluminum hydroxide powder body as anti-flaming smoke-inhibiting agent, and the mass ratio of described zinc molybdenum silicon compound and nano-aluminum hydroxide powder body is 1:5～2:1；Described anti-flaming smoke-inhibiting agent content in height fire prevention PVC U pipe is 15%～30%.The PVC U pipe that the present invention provides can solve the problem that the flame retarding and smoke suppressing properties of high fire prevention PVC U pipe and the balance of its physical and mechanical properties, there is flame retarding and smoke suppressing properties and its physical and mechanical properties conformance with standard requirement of excellence, range and the safety of PVC U pipe are greatly improved.

Description

A kind of high fire prevention PVC-U pipe and preparation method thereof

Technical field

The present invention relates to PVC-U pipeline field, be specifically related to a kind of high fire prevention PVC-U pipe and preparation method thereof.

Background technology

RPVC (PVC-U) pipe has that good resistance to acids and bases, stretching and compression performance is strong, it is certain soft to have Toughness, length in service life, easy for installation, it is widely used in municipal administration plumbing, agricultural irrigation, house commercial building industry.But PVC fires Can produce a large amount of corrosivity toxic gas and smog during burning, once breaking out of fire, containing the dense smoke of a large amount of corrosive gas People will produce fatal threat, and therefore the flame-retardant smoke inhibition technology of pvc pipe the most increasingly comes into one's own.At present, in part pvc pipe Improve the fire resistance of PVC-U pipe by with the addition of anti-flaming smoke-inhibiting agent, but flame retardant effect remains on the low side, especially press down cigarette Effect is the most worse, this is because the membership that adds of anti-flaming smoke-inhibiting agent significantly reduces the mechanical performance of PVC-U pipe, hydrostatic performance Deng, if adding too much fire retardant, PVC-U pipe product can be made to be unable to reach relevant criterion requirement, therefore anti-flaming smoke-inhibiting agent adds Measure the most fewer.But, the flame-retardancy requirements of PVC product is increasingly stricter, develops high fireproof PVC pipeline product more and more urgent Cut, the most fire-retardant and product of smoke suppressing all excellences, and to develop this series products, be necessary for having balanced anti-flaming smoke-inhibiting agent high Fill and PVC-U manages the relation between other performances.

Summary of the invention

It is an object of the invention to overcome the deficiencies in the prior art, it is provided that a kind of high fire prevention PVC-U pipe, this PVC-U pipe energy Enough balances solving high fire prevention PVC-U pipe flame retarding and smoke suppressing properties and its physical and mechanical properties, have the flame retarding and smoke suppressing properties of excellence And its physical and mechanical properties conformance with standard requirement.

Another object of the present invention is to provide the preparation method of above-mentioned high fire prevention PVC-U pipe.

A kind of high fire prevention PVC-U pipe, described high fire prevention PVC-U pipe uses zinc molybdenum silicon compound and nano-aluminum hydroxide powder body Compound as anti-flaming smoke-inhibiting agent, the mass ratio of described zinc molybdenum silicon compound and nano-aluminum hydroxide powder body is 1:5～2:1； Described anti-flaming smoke-inhibiting agent content in height fire prevention PVC-U pipe is 15%～30%；

Wherein, described zinc molybdenum silicon compound is nano level zinc, molybdenum covering composite on magnesium silicate, described zinc molybdenum The mean diameter of silicon compound is 4～6 microns.

The present invention uses zinc molybdenum silicon compound as anti-flaming smoke-inhibiting agent, and zinc molybdenum silicon compound plays efficiently by generating layer of charcoal Pressing down cigarette effect, it has concurrently and assists fire-retardant effect simultaneously；Nano-aluminum hydroxide is mainly fire retardation and then the product of minimizing cigarette Raw；The PVC-U pipe prepared under the formula of the present invention has the flame retarding and smoke suppressing properties of excellence.

It is further preferred that described zinc molybdenum silicon compound can the zinc molybdenum silicon of preferably product designation Charmax FS-ZMT Complex.

Preferably, described nano-aluminum hydroxide powder body is through coupling agent surface modification；It is further preferred that described coupling agent is Titanate coupling agent or silane coupler.

Preferably, described PVC-U pipe is made up of following raw material by weight:

Polrvinyl chloride 100 parts；

Anti-flaming smoke-inhibiting agent 20～40 parts；

Impact modifier 0.5～10 parts；

Stabilizer 1～5 parts；

Processing aid 0.5～5 parts；

Lubricant 0.1～5 parts；

Coupling agent 1～3 parts；

Pigment 0.01～3 parts；

Calcium carbonate 1～30 parts.

Preferably, the mass ratio of described zinc molybdenum silicon compound and nano-aluminum hydroxide powder body is 3:5～1:1.

Preferably, described impact modifier be esters of acrylic acid or MMB methyl methacrylate butadiene styrene copolymerized One or more in species impact modifier.

Preferably, described stabilizer is calcium-zinc composite stabilizing agent or organic tin stabilizer.

Preferably, described processing aid is acrylic processing aid.

Preferably, described lubricant is stearic acid plasticizer.

Preferably, described pigment is titanium dioxide.

The preparation method of described high fire prevention PVC-U pipe, it is characterised in that comprise the steps:

S1: mixed by described raw material, then carries out mixing dispersion, when temperature reaches 80～130 DEG C with the hot batch mixer of high speed Time enter in cold batch mixer stirring cooling, standby when temperature is down to 30～70 DEG C；

S2: by described in step S1 material add double screw extruder plasticizing, molded；

Wherein, double screw extruder is conical double screw extruder, and the temperature of machine barrel is set as 140～190 DEG C, molding temperature Degree is set as 140～220 DEG C.

Compared with prior art, there is advantages that

PVC-U pipe prepared by the present invention is keeping the PVC-U excellent physical and mechanical properties of pipe and the base of moulding processability On plinth, by filling the novel flame-retardant smoke suppressant of high-load, greatly improve the flame retarding and smoke suppressing properties of PVC-U pipe, through inspection The flame of PVC-U pipe propagates grade≤25, Smoke generation≤50, is significantly increased compared with existing flame-proof PVC-U pipe；Simultaneously The performance of PVC-U pipe meets the requirement of GB/T 10002.1 or GB/T 5836.1.This PVC-U pipe has higher use safety Property, fire protecting performance is excellent, is applicable to building water-feeding & drainaging pipeline, is particularly suited for fire prevention, presses down the environment that cigarette requirement is higher, The scope of application of PVC-U pipe can be widened.

Detailed description of the invention

Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to this. Unless stated otherwise, involved in embodiment material, method are material commonly used in the art and method.

Embodiment 1

A kind of high fire prevention PVC-U pipe formula is: 100 parts of polyvinyl chloride resins, 4 parts of calcium-zinc composite stabilizing agents, 0.8 part of processing aid LPA-40,3 parts of MBS impact modifiers, 3 parts of zinc molybdenum silicon compounds, 20 parts of nano-aluminum hydroxides, 2 parts of lubricant chlorinated paraffins, 1840,2 parts of titanium dioxides of 1.2 parts of stearic acid, 15 parts of calcium carbonate, 1 part of titanate coupling agent.

After each component is prepared by mass parts, putting in high mixer and stir, high mixer whipping temp is set in 115 DEG C, stirring To material enters during this temperature stirring cooling in cold mixer, cold mixer temperature is set in 40 DEG C of dischargings.Then material is added double spiral shell Bar extruder plasticizing, molded, wherein the temperature of double screw extruder machine barrel is respectively set as 170 DEG C, 165 DEG C, mould become Type temperature is respectively set as 170 DEG C, 180 DEG C；Extrusion prepares high fire prevention PVC-U pipe.

Obtained PVC-U pipe is entered by GB/T 10002.1, GB/T 5836.1 and CAN/ULC-S102.2-10 standard Row test, PVC-U pipe performance meets GB/T 10002.1 or GB/T 5836.1 requirement；Flame retarding and smoke suppressing properties test data are shown in Table 1, as shown in Table 1, the PVC-U pipe that the present embodiment prepares meets high fire prevention PVC-U pipe flame and propagates grade≤25, is fuming The requirement of level≤50.

Embodiment 2

A kind of high fire prevention PVC-U pipe formula is: 100 parts of polyvinyl chloride resins, 3 parts of organic tin stabilizers, 1 part of processing aid PA- 40,3 parts of ACR impact modifiers, 6 parts of zinc molybdenum silicon compounds, 25 parts of nano-aluminum hydroxides, 2 parts of lubricant chlorinated paraffins, 1.4 parts 1840,2 parts of titanium dioxides of stearic acid, 5 parts of calcium carbonate, 1.5 parts of titanate coupling agents.

After each component is prepared by mass parts, putting in high mixer and stir, high mixer whipping temp is set in 120 DEG C, stirring To material enters during this temperature stirring cooling in cold mixer, cold mixer temperature is set in 45 DEG C of dischargings.Then material is added double spiral shell Bar extruder plasticizing, molded, wherein the temperature of double screw extruder machine barrel is respectively set as 175 DEG C, 170 DEG C, mould become Type temperature is respectively set as 175 DEG C, 185 DEG C；Extrusion prepares high fire prevention PVC-U pipe.

Embodiment 3

A kind of high fire prevention PVC-U pipe formula is: 100 parts of polyvinyl chloride resins, 5 parts of organic tin stabilizers, 5 parts of processing aid PA- 40,5 parts of ACR impact modifiers, 10 parts of zinc molybdenum silicon compounds, 30 parts of nano-aluminum hydroxides, 5 parts of lubricant chlorinated paraffins, 1.4 parts 1840,3 parts of titanium dioxides of stearic acid, 25 parts of calcium carbonate, 1.5 parts of titanate coupling agents.

Obtained pipe is surveyed by GB/T 10002.1, GB/T 5836.1 and CAN/ULC-S102.2-10 standard Examination, pipe performance meets GB/T 10002.1 or GB/T 5836.1 requirement；Flame retarding and smoke suppressing properties test data are shown in Table 1, can by table 1 Knowing, pipe meets high fire protection pipe flame and propagates grade≤25, the requirement of Smoke generation≤50.

Embodiment 4

A kind of high fire prevention PVC-U pipe formula is: 100 parts of polyvinyl chloride resins, 4 parts of calcium-zinc composite stabilizing agents, 0.8 part of processing aid LPA-40,10 parts of MBS impact modifiers, 5 parts of zinc molybdenum silicon compounds, 25 parts of nano-aluminum hydroxides, 2 parts of lubricant chlorinated paraffins, 1840,2 parts of titanium dioxides of 1.2 parts of stearic acid, 30 parts of calcium carbonate, 1 part of titanate coupling agent.

Reference examples 1

A kind of high fire prevention PVC-U pipe formula is: 100 parts of polyvinyl chloride resins, 4 parts of calcium-zinc composite stabilizing agents, 0.8 part of processing aid LPA-40,3 parts of MBS impact modifiers, 23 parts of zinc molybdic acids, 2 parts of lubricant chlorinated paraffins, 1840,2 parts of titanium whites of 1.2 parts of stearic acid Powder, 15 parts of calcium carbonate, 1 part of titanate coupling agent.

Obtained PVC-U pipe is entered by GB/T 10002.1, GB/T 5836.1 and CAN/ULC-S102.2-10 standard Row test, PVC-U pipe performance meets GB/T 10002.1 or GB/T 5836.1 requirement；Flame retarding and smoke suppressing properties test data are shown in Table 1, as shown in Table 1, the flame of the PVC-U pipe that this reference examples prepares propagate grade more than 25, Smoke generation more than 50, be not inconsistent Close height fire prevention PVC-U pipe flame and propagate grade≤25, the requirement of Smoke generation≤50.

Reference examples 2

A kind of high fire prevention PVC-U pipe formula is: 100 parts of polyvinyl chloride resins, 4 parts of calcium-zinc composite stabilizing agents, 0.8 part of processing aid LPA-40,3 parts of MBS impact modifiers, 23 parts of zinc molybdenum silicon compounds, 2 parts of lubricant chlorinated paraffins, 1.2 parts of stearic acid 1840,2 Part titanium dioxide, 15 parts of calcium carbonate, 1 part of titanate coupling agent.

Obtained PVC-U pipe is entered by GB/T 10002.1, GB/T 5836.1 and CAN/ULC-S102.2-10 standard Row test, PVC-U pipe performance meets GB/T 10002.1 or GB/T 5836.1 requirement；Flame retarding and smoke suppressing properties test data are shown in Table 1, as shown in Table 1, PVC-U pipe flame that this reference examples prepares propagate grade more than 25, Smoke generation more than 50, do not meet The flame of high fire prevention PVC-U pipe propagates grade≤25, the requirement of Smoke generation≤50.

Reference examples 3

A kind of high fire prevention PVC-U pipe formula is: 100 parts of polyvinyl chloride resins, 4 parts of calcium-zinc composite stabilizing agents, 0.8 part of processing aid LPA-40,3 parts of MBS impact modifiers, 23 parts of nano-aluminum hydroxides, 2 parts of lubricant chlorinated paraffins, 1.2 parts of stearic acid 1840,2 Part titanium dioxide, 15 parts of calcium carbonate, 1 part of titanate coupling agent.

Obtained PVC-U pipe is entered by GB/T 10002.1, GB/T 5836.1 and CAN/ULC-S102.2-10 standard Row test, PVC-U pipe performance meets GB/T 10002.1 or GB/T 5836.1 requirement；Flame retarding and smoke suppressing properties test data are shown in Table 1, as shown in Table 1, the Smoke generation of the PVC-U pipe that this reference examples prepares is more than 50, does not meets high fire prevention PVC-U pipe and is fuming The requirement of grade≤50.

Reference examples 4

A kind of high fire prevention PVC-U pipe formula is: 100 parts of polyvinyl chloride resins, 4 parts of calcium-zinc composite stabilizing agents, 0.8 part of processing aid LPA-40,3 parts of MBS impact modifiers, 3 parts of zinc molybdic acids, 20 parts of nano-aluminum hydroxides, 2 parts of lubricant chlorinated paraffins, 1.2 parts hard 1840,2 parts of titanium dioxides of fat acid, 15 parts of calcium carbonate, 1 part of titanate coupling agent.

Obtained PVC-U pipe is entered by GB/T 10002.1, GB/T 5836.1 and CAN/ULC-S102.2-10 standard Row test, PVC-U pipe performance meets GB/T 10002.1 or GB/T 5836.1 requirement；Flame retarding and smoke suppressing properties test data are shown in Table 1, as shown in Table 1, the PVC-U pipe Smoke generation that the present embodiment prepares is more than 50, does not meets high fire prevention PVC-U pipe and is fuming The requirement of level≤50.

Table 1:

Claims

1. one kind high fire prevention PVC-U pipe, it is characterised in that described PVC-U pipe is made up of following raw material by weight:

Wherein, described anti-flaming smoke-inhibiting agent is zinc molybdenum silicon compound and nano-aluminum hydroxide powder body is 1:5～2:1 group according to mass ratio The compound become, described zinc molybdenum silicon compound is nano level zinc, molybdenum covering composite on magnesium silicate, described zinc molybdenum silicon The mean diameter of complex is 4～6 microns.

High fire prevention PVC-U pipe the most according to claim 1, it is characterised in that described zinc molybdenum silicon compound and nanometer hydrogen-oxygen The mass ratio changing aluminium powder body is 3:5～1:1.

High fire prevention PVC-U pipe the most according to claim 1, it is characterised in that described stabilizer is that Ca Zn composite is stable Agent or organic tin stabilizer.

High fire prevention PVC-U pipe the most according to claim 1, it is characterised in that described processing aid is acrylic compounds processing Auxiliary agent.

High fire prevention PVC-U pipe the most according to claim 1, it is characterised in that described lubricant is stearic acid plasticizer.

6. the preparation method of the high fire prevention PVC-U pipe described in claim 1 to 5 any claim, it is characterised in that include as Lower step:

S1: mixed by described raw material, then carries out mixing dispersion with the hot batch mixer of high speed, arranges when temperature reaches 80～130 DEG C Enter in cold batch mixer stirring cooling, standby when temperature is down to 30～70 DEG C；

Wherein, double screw extruder is conical double screw extruder, and the temperature of machine barrel is set as 140～190 DEG C, and forming temperature sets It is set to 140～220 DEG C.