CN1058275C - Anti-static and flame-retardant composite for plastic conveyer roller of coal mine and its mfg. method - Google Patents
Anti-static and flame-retardant composite for plastic conveyer roller of coal mine and its mfg. method Download PDFInfo
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- CN1058275C CN1058275C CN96115855A CN96115855A CN1058275C CN 1058275 C CN1058275 C CN 1058275C CN 96115855 A CN96115855 A CN 96115855A CN 96115855 A CN96115855 A CN 96115855A CN 1058275 C CN1058275 C CN 1058275C
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Abstract
The present invention relates to composition material for plastic support rollers of underground coal mines and a preparation method thereof, the composition material is used for manufacturing support rollers of conveyor belts of underground coal mines. The composition material comprises polyvinyl chloride, methyl methacrylate-butadiene-styrene terpolymer, tribasic lead sulfate, dibasic lead phosphite, dioctyl phthalate, acrylic polymers, barium stearate, lead stearate, tribenzene phosphite, low molecular weight polyethylene, calcium carbonate and metal powder. The present invention has the advantage that the support rollers manufactured from the composition has static resistance, combustion resistance, corrosion resistance, wear resistance, light weight and simple and feasible manufacturing method. The composition material is ideal material capable of replacing metal support rollers.
Description
The present invention relates to a kind of improvement of endless belt conveyor roller material, is a kind of antistatic, flame-retardant composite for plastic conveyer roller of coal mine and manufacture method thereof specifically.
Endless belt conveyor is a steel with the carrying roller major part, and the price height, weight is big, reactive loss is big, the carrying roller in the used conveying belt under coal mine especially, because damp under the coal mine, corrosion gets more piece, needs often to change carrying roller, has both taken material, when taking a lot of work again.
The object of the invention is to overcome the shortcoming in the above-mentioned technology, propose a kind of novel material of making the endless belt conveyor carrying roller: antistatic, flame-retardant composite for plastic conveyer roller of coal mine and manufacture method thereof, making carrying roller with this material can weight reduction, reduce cost, can reduce noise when anticorrosive, shock resistance, wear-resistant, high-speed cruising.
The object of the invention is realized by following technical scheme: this kind is antistatic, fire-retardant, composite for plastic conveyer roller of coal mine, and its moiety is:
The moiety title is formed the component content parts by weight
Polyvinyl chloride (PVC) 100
Methyl methacrylate-divinyl-8～30
Styrol copolymer (MBS)
Lead sulfate tribasic 1～10
Dibasic lead phosphite 1～8
Dioctyl phthalate (DOP) (DOP) 1～8
Acrylic polymer (ACR) 1～20
Barium stearate 0.2～5
Lead stearate 0.2～5
Stearic acid 0.2～5
Triphenyl phosphite (TPP) 0.2～5
Low molecular weight polyethylene 0.1～3
Lime carbonate 0.5～40
Metal-powder 1～30
As making the plastic conveyer roller material, require it to have many advantageous properties: antistatic, fire-retardant, high strength, wear-resistant etc.Select the base-material of polyvinyl chloride as the present composition, be because polyvinyl chloride itself has many good performances: difficult combustion, wear-resisting, noise elimination, shock absorbing, good mechanical properties, characteristics such as the monomer source is wide, the goods cost is low, and can adopt multiple forming method machine-shaping.Polyvinyl chloride is a kind of multi-component material, can add softening agent, stablizer, additive etc. according to different purposes.Along with the consumption difference of component, polrvinyl chloride product can present different physics, mechanical property.
MBS (MBS) is to connect the amorphism thermal plasticity high polymer that the skill copolymerization obtains by butadiene-styrene elastomer and methyl methacrylate and vinylbenzene.Low temperature impact properties is better, is light yellow pellet, and the socle girder notched Izod impact strength reaches 100～150J/m, and good winter hardiness is arranged, even-40 ℃ of toughness that still have; Thermotolerance is better, and goods still keep enough rigidity at 85～90 ℃.With polyvinyl chloride good miscibility is arranged, as the properties-correcting agent of polyvinyl chloride.Polyvinyl chloride after the modification can improve 6～15 times of resistance to impact shocks, and has improved ageing resistance, winter hardiness and processing characteristics.
Lead sulfate tribasic and dibasic lead phosphite are white powder or two kinds of products of faint yellow crisp shape body, belong to lead stabilizer, and resistance toheat is good, particularly long-term thermal stability is good, has the performance of white pigment, and hiding power is big, therefore weathering resistance is also good, cheap.Be suitable as very much the stablizer of polyvinyl chloride.
Phthalic acid two is sad to be transparence liquid, be widely used as softening agent, has good comprehensive performances, good mixing property, and the plasticizing efficiency height, volatility is low, and low-temperature pliability is better, and is heat-resisting, and weathering resistance is good, is widely used in the primary plasticizer of polyvinyl chloride.
Acrylic polymer adds man-hour as the modifier of polyvinyl chloride, after these two kinds of materials are mixed, adopts mechanical blending manufactured such as kneading, extrude.Through after the blend, resistance to impact shock improves, along with the increase of acrylic polymer addition, its socle girder resistance to impact shock increases severely, even about up to 50 times.In addition, weathering resistance, forming process property improvement.
Barium stearate is white powder, and is water insoluble, can be used as the polyvinyl chloride heat-resisting stabilizing agent, and no sulphide staining is as a kind of high heat-proof lubricant.Lead stearate also is a kind of white powder, and is water insoluble, also is as polychloroethylene heat stabilizer and lubricant, is used for various different transparent flexibles, hard product.Stearic acid is white cured shape solid, in order to stablizer, cold resistant plasticizer, tensio-active agent, lubricants such as production polyvinyl chloride soaps.
Triphenyl phosphite is the smelly transparent liquid of a kind of colourless little band phenol.Make sequestrant in various polrvinyl chloride products, can make goods keep its transparency, and can suppress change in color, simultaneously it can increase the antioxygen of main stabilizer and light, thermostability.
Low molecular weight polyethylene has good chemical stability, thermostability and wet fastness, and melt viscosity is low, and is good with the consistency of paraffin and other resin.As the additive of polyvinyl chloride, can improve its processing characteristics, and can improve slipperiness, glossiness and the thermostability of product surface as lubricant.Mainly play the external lubricant effect among the present invention.
Lime carbonate is main a kind of in the carbonate weighting agent, and it is cheap, and it is very abundant to originate, and mainly is to be that raw material processes from strand with natural Wingdale.Nontoxic, the nonirritant of lime carbonate, odorlessness, softness in addition; White, refractive index is low, it is painted, dry to be easy to, do not contain crystal water, has suitable granularity; Owing to can bring into play suitable souring in the course of processing, thereby being a kind of resistive connection tablet, in the lime carbonate energy and chlorion, is the acid acceptor in the secondary stabilization of polyvinyl chloride.Can reduce the shrinking percentage of goods in molding and cross-linking process, be stable in wide wide temperature range.
Metallic stuffing is given plastic composite with singularity, for example can increase performances such as thermal conductivity, electroconductibility, thermal capacitance and radioprotective.Metal-powders such as the steel of many advantages, iron, copper, copper alloy, aluminium, zinc, lead all can be made the filler of plastics.When filling a prescription, dry in advance filler, usually can improve the performance of final product.Metal and organic resin compound tense on metal and plastic interface, may form metal one organic complex, and it can play the effect of promotor, helps solidified and carries out.Its performance is changed to some extent, reduced insulating property, improved electroconductibility, can reduce or eliminate the static of this plastic material.
In order to eliminate the static in the said composition, also can add static inhibitor, metal-powder or adopt stearamide propyl-beta-hydroxyethyl-dimethyl ammonium nitrate (SN), perhaps Graphite Powder 99, perhaps second piece carbon black, graphitized carbon black and carbon black.When selecting Graphite Powder 99 as static inhibitor for use, its content is 0.5-30 part, and when selecting static inhibitor stearamide propyl-beta-hydroxyethyl-dimethyl ammonium nitrate (SN) for use, its content is 0.5-5 part.
Manufacture method antistatic, flame-retardant composite for plastic conveyer roller of coal mine is as follows:
(1) takes by weighing various compositions according to following ratio and divide material
The moiety title is formed the component content parts by weight
Polyvinyl chloride (PVC) 100
Methyl methacrylate-divinyl-8～30
Styrol copolymer (MBS)
Lead sulfate tribasic 1～10
Dibasic lead phosphite 1～8
Dioctyl phthalate (DOP) (DOP) 1～8
Acrylic polymer (ACR) 1～20
Barium stearate 0.2～5
Lead stearate 0.2～5
Stearic acid 0.2～5
Triphenyl phosphite (TPP) 0.2～5
Low molecular weight polyethylene 0.1～3
Lime carbonate 0.5～40
Metal-powder 1～30
(2) earlier with polyvinyl chloride (PVC), the metal-powder that antistatic property is arranged, comprise iron powder, cupric oxide powder, aluminium powder form, or the mixed powder of two kinds or three kinds wherein, optothermal stabilizer, fire retardant and internal lubricant, lead sulfate tribasic, dibasic lead phosphite, barium stearate, lead stearate, stearic acid, add the high speed kneader at normal temperatures successively, elder generation's stirring at low speed, add liquid plasticizer by side material mouth simultaneously: o-phthalic acid dibutyl ester, liquid sequestrant: triphenyl phosphite, continued stirring at low speed 1.5～2 minutes
(3) mediate at a high speed to 40 ℃,
(4) add lime carbonate, continue to mediate to 80 ℃,
(5) add anti-impact modifier CALCIUM ACRYLATE base polymer, external lubricant: low molecular weight polyethylene,
(6) continue to mediate, when physical temperature reaches 120 ℃ ± 5 ℃, transfer the high speed kneader speed of mainshaft to low speed by high speed, open the kneader discharge valve, material is arranged in the low speed cooling mixing machine that has into started in advance, when being cooled to below 40 ℃, compound is discharged, do for loose shape and mix powder.
(7) loose shape dry mixed powder is sieved, gel piece and impurity are sifted out, antistatic, fire-retardant, the composite for plastic conveyer roller of coal mine dry mixed powder that must mix.
The powder that is processed into directly can be used the powder extruder for shaping, make antistatic, fire-retardant, plastic conveyer roller of coal mine, not need powder through granulation.Use the twin screw extruder extrusion moulding, Production Flow Chart is short, and the starting material heated time is short, overheated decomposition of little, and product properties is good, and the following horn scraps of output is processed easily, the efficient height, cost is low.
Owing to use the twin screw extruder extrusion moulding, directly use powder, without granulation, so to the requirement height of powder.In the powder manufacturing processed, require the high speed kneader to have speed changing function, rotating speed can change in 700～1400 rev/mins of scopes, and the cold machine that stirs of low speed mixing disperses refrigerant.The material ability should with the capabilities match of high speed kneader, volume is more than 2 times of high speed kneader.Charging capacity should be controlled at 50～70% of high speed kneader capacity, can reach assigned temperature very soon, the production efficiency height.Also can pass through granulation, with the method manufacturing of injection moulding, antistatic, fire-retardant, plastic conveyer roller of coal mine.Also can produce under other coal mine plastic prod under the antistatic flame resistant coal mine with this prescription and this method.
Advantage of the present invention: with the conveyer carrying roller of material manufacturing of the present invention, have in light weight, cost is low, anticorrosive, shock resistance, wear-resistant, noise is low, antistatic, especially under coal mine, make the endless belt conveyor carrying roller, these advantages are very valuable, prolonged work-ing life greatly, also can not cause discharge accident because of the spark that static forms.This material detects through test center of Shanghai Branch of coal science institute, and every index all reaches and surpasses coal-mining industry standard promulgated by the ministries or commissions of the Central Government, and other indexs all reach and surpass the standard of national GB93009-90.Every the key technical indexes of test is as follows:
Project standard testing mean value
1, sheet resistance value (ohm)＜5 * 10
82.1 * 10
7
2, fire-retardant (flame is arranged) (second)＜3 1.67
Flameless combustion (second)＜20 1.94
3, longevity test (hour) 〉=15000 qualified
Embodiment 1.
Get 100 kilograms of polyvinyl chloride (PVC), 10 kilograms of methymethacrylate-butadiene-styrene copolymer (MBS), 4 kilograms of lead sulfate tribasics, 1 kilogram of dibasic Lead Phosphite, 1 kilogram of dioctyl phthalate (DOP) (DOP), 3 kilograms of CALCIUM ACRYLATE base polymers (ACR), 0.3 kilogram of barium stearate, 0.4 kilogram of lead stearate, 0.4 kilogram of triphenyl phosphite (T.P.P), 0.1 kilogram of low molecular weight polyethylene, 2 kilograms in lime carbonate, each 1 kilogram totally 2 kilograms of basic iron powder, cupric oxide powders.
With the polyvinyl chloride that is taken out, cupric oxide, the base iron powder, lead sulfate tribasic, dibasic lead phosphite, barium stearate, lead stearate, put into the high speed kneader under the stearic acid normal temperature successively, in the time of stirring at low speed, add dioctyl phthalate (DOP) from side material mouth, triphenyl phosphite, continued stirring at low speed 1.5～2 minutes, mediate at a high speed again and after 40 ℃, add lime carbonate, continue to mediate to mediating to 80 ℃, add acrylic polymer, low molecular weight polyethylene, continue to mediate, when temperature of charge reaches 120 ℃ ± 5 ℃, with the high speed kneader speed of mainshaft by after transferring low speed at a high speed, material is arranged in the low speed cooling mixing machine that has into started in advance, discharging during cooling mixing to 40 ℃ ± 5 ℃ is for loose shape dry mixed powder, after sieve, remove caking and foreign matter, what obtain mixing is antistatic, fire-retardant, highstrenghtpiston's carrying roller dry mixed powder of composition.
Embodiment 2.
Get 100 kilograms of polyvinyl chloride, 15 kilograms of MBSs, 6 kilograms of lead sulfate tribasics, 4 kilograms of dibasic lead phosphites, 4 kilograms of dioctyl phthalate (DOP)s, 7 kilograms of acrylic polymers, 1 kilogram of barium stearate, 1 kilogram of lead stearate, 1 kilogram of triphenyl phosphite, 0.6 kilogram of low molecular polyethylene, 10 kilograms in lime carbonate, each 2 kilograms at cupric oxide powder, lead powder end, totally 4 kilograms.
Earlier with polyvinyl chloride, cupric oxide powder, aluminium powder form, lead sulfate tribasic, dibasic lead phosphite, barium stearate, lead stearate, stearic acid adds the high speed kneader at normal temperatures successively, in the time of stirring at low speed, add dioctyl phthalate (DOP) by side material mouth, triphenyl phosphite, continue stirring at low speed after 1.5～2 minutes, mediate at a high speed again to 40 ℃, add lime carbonate, continue to mediate to 80 ℃, add acrylic polymer again, low molecular weight polyethylene continues to mediate, when temperature of charge reaches 120 ℃ ± 5 ℃, transfer high speed kneader holoaxial rotating speed to low speed by high speed, open discharge valve, material is arranged in the low speed cooling mixing machine that has into started in advance, discharging when the cooling temperature is bonded to 40 ℃ ± 5 ℃, be loose shape dry mixed powder, after sieve, remove caking and foreign matter, what obtain mixing is antistatic, fire-retardant, highstrenghtpiston's carrying roller dry mixed powder of composition.
Embodiment 3.
Get 80 kilograms of polyvinyl chloride, 8 kilograms of MBSs, 4 kilograms of lead sulfate tribasics, 4 kilograms of dibasic lead phosphites, 3 kilograms of dioctyl phthalate (DOP)s, 5 kilograms of acrylic polymers, 1 kilogram of barium stearate, 1 kilogram of lead stearate, 1 kilogram of triphenyl phosphite, 0.5 kilogram of low molecular weight polyethylene, 10 kilograms in lime carbonate, respectively 1 kilogram in base iron powder, cupric oxide powder, lead powder, totally 3 kilograms.
Earlier with polyvinyl chloride, the base iron powder, cupric oxide powder, aluminium powder, lead sulfate tribasic, dibasic lead phosphite, barium stearate, lead stearate, stearic acid adds the high speed kneader at normal temperatures successively, when carrying out stirring at low speed, add dioctyl phthalate (DOP) by side material mouth, triphenyl phosphite, continuing stirring at low speed mediates at a high speed after 1.5～2 minutes to 40 ℃ again, add lime carbonate, continue to mediate to 80 ℃, add acrylic polymer again, low molecular weight polyethylene, continue to mediate, when temperature of charge reaches 120 ℃ ± 5 ℃, the high speed kneader speed of mainshaft by transferring low speed at a high speed, is opened discharge valve, material is arranged in the low speed cooling mixing machine that has into started in advance discharging during cooling mixing to 40 ℃.For loose shape dry mixed powder,, remove caking and foreign matter, antistatic, fire-retardant, the composite for plastic conveyer roller of coal mine dry mixed powder that obtain mixing after sieve.
Claims (4)
1, a kind of antistatic, fire-retardant, composite for plastic conveyer roller of coal mine is characterized in that its moiety is:
The moiety title is formed the component content parts by weight
Polyvinyl chloride (PVC) 100
Methyl methacrylate-divinyl-8～30.
Styrol copolymer (MBS)
Lead sulfate tribasic 1～10
Dibasic lead phosphite 1～8
Dioctyl phthalate (DOP) (DOP) 1～8
Acrylic polymer (ACR) 1～20
Barium stearate 0.2～5
Lead stearate 0.2～5
Stearic acid 0.2～5
Triphenyl phosphite (TPP) 0.2～5
Low molecular weight polyethylene 0.1～3
Lime carbonate 0.5～40
Metal-powder 1～30
2, according to described antistatic, fire-retardant, the composite for plastic conveyer roller of coal mine of claim 1, it is characterized in that static inhibitor adopts metal-powder, perhaps adopt Graphite Powder 99, perhaps Shawinigan black, graphitized carbon black and carbon black, perhaps adopt stearamide propyl-beta-hydroxyethyl-dimethyl ammonium nitrate (SN), when selecting Graphite Powder 99 for use, its content is 0.5-30 part, when adopting static inhibitor stearamide propyl-beta-hydroxyethyl-dimethyl ammonium nitrate (SN), its content is 0.5-5 part.
3, according to described antistatic, fire-retardant, the composite for plastic conveyer roller of coal mine of claim 1, it is characterized in that metal-powder is basic iron powder or cupric oxide powder or aluminium powder form, or the mixed powder of two kinds or three kinds wherein.
4, a kind of manufacture method of antistatic, flame-retardant composite for plastic conveyer roller of coal mine is characterized in that according to following technological process production:
(1) takes by weighing various moiety materials according to following ratio
The moiety title is formed the component content parts by weight
Polyvinyl chloride (PVC) 100
Methyl methacrylate-divinyl-8～30
Styrol copolymer (MBS)
Lead sulfate tribasic 1～10
Dibasic lead phosphite 1～8
Dioctyl phthalate (DOP) (DOP) 1～8
Acrylic polymer (ACR) 1～20
Barium stearate 0.2～5
Lead stearate 0.2～5
Stearic acid 0.2～5
Triphenyl phosphite (TPP) 0.2～5
Low molecular weight polyethylene 0.1～3
Lime carbonate 0.5～40
Metal-powder 1～30
(2) earlier with polyvinyl chloride (PVC), the metal-powder of antistatic property and optothermal stabilizer, fire retardant, internal lubricant are arranged, lead sulfate tribasic, dibasic lead phosphite, barium stearate, lead stearate, stearic acid, add in the high speed kneader at normal temperatures successively, in the time of stirring at low speed, add liquid plasticizer dioctyl phthalate (DOP), liquid sequestrant: triphenyl phosphite by side material mouth, continued stirring at low speed 1.5～2 minutes
(3) mediate at a high speed to 40 ℃,
(4) add treated lime carbonate earlier, continue to mediate to 80 ℃,
(5) add impact modifier acrylate base polymer, chlorinatedpolyethylene, external lubricant, low molecular weight polyethylene,
(6) continue to mediate, when temperature of charge reaches 120 ℃ ± 5 ℃, transfer the high speed kneader speed of mainshaft to low speed by high speed, open discharge valve, material is arranged in the cooling mixing machine that has into started in advance, discharging during cooling mixing to 40 ℃ ± 5 ℃, be loose shape dry mixed powder
(7) sieve, remove caking and foreign matter, the mixed powder that antistatic, fire-retardant, the composite for plastic conveyer roller of coal mine that obtains mixing is done.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96115855A CN1058275C (en) | 1996-06-25 | 1996-06-25 | Anti-static and flame-retardant composite for plastic conveyer roller of coal mine and its mfg. method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96115855A CN1058275C (en) | 1996-06-25 | 1996-06-25 | Anti-static and flame-retardant composite for plastic conveyer roller of coal mine and its mfg. method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1148133A CN1148133A (en) | 1997-04-23 |
| CN1058275C true CN1058275C (en) | 2000-11-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96115855A Expired - Fee Related CN1058275C (en) | 1996-06-25 | 1996-06-25 | Anti-static and flame-retardant composite for plastic conveyer roller of coal mine and its mfg. method |
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| DE10020021A1 (en) * | 2000-04-22 | 2001-10-25 | Rag Ag | Chain scraper conveyor for underground mining operations has conveyor chains and drivers consisting at least partially of high strength plastic having self-extinguishing, hardly inflammable and anti-static material properties |
| CN1318496C (en) * | 2005-06-09 | 2007-05-30 | 石守汉 | Composite for mfg. roller and method for mfg. roller |
| EA016586B1 (en) * | 2009-05-15 | 2012-06-29 | Виталий Богуславович Казмирчук | Roller for test desk and method for applying coating thereon |
| CN101846217B (en) * | 2010-06-18 | 2011-11-02 | 李大伟 | Anti-static inflaming-retarding PVC firedamp drainage tube stock for mine and preparation method |
| CN102009906B (en) * | 2010-12-01 | 2014-02-26 | 中实洛阳工程塑料有限公司 | Nylon ground roll and preparation method |
| CN103131093A (en) * | 2011-11-28 | 2013-06-05 | 江苏双宝科技有限公司 | Processing method of mixing chlorinated polyethylene and resin |
| CN103275441B (en) * | 2013-06-24 | 2015-11-25 | 胡大为 | A kind of high-strength, high-anti-friction the development of PVC nanocomposites for the manufacture of carrying roller |
| CN103739985A (en) * | 2013-12-09 | 2014-04-23 | 吴江市董鑫塑料包装厂 | PVC decorative plate |
| CN104072916B (en) * | 2014-07-17 | 2016-03-02 | 应璐 | A kind of PVC neutron shielding material and preparation method thereof |
| CN105237926A (en) * | 2015-08-18 | 2016-01-13 | 苏州国泰科技发展有限公司 | Rubber material for automobile transmission belt and preparation method therefor |
| CN114381058A (en) * | 2021-11-30 | 2022-04-22 | 神华科技发展有限责任公司 | Composition for preparing carrier roller body and preparation method and application thereof |
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| CN1070061A (en) * | 1991-08-23 | 1993-03-17 | 日立电线株式会社 | Non-halogenated fire-proof resin composition and bag are with the electric wire and cable of this thing |
| CN1079494A (en) * | 1993-06-25 | 1993-12-15 | 生寿斋 | Anti-electrostatic fire retardant composition and preparation method thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1030597A (en) * | 1987-07-11 | 1989-01-25 | 广州市消防科学技术研究所 | Flame-retardant plastic composition and the goods made from said composition |
| CN1070061A (en) * | 1991-08-23 | 1993-03-17 | 日立电线株式会社 | Non-halogenated fire-proof resin composition and bag are with the electric wire and cable of this thing |
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| CN1148133A (en) | 1997-04-23 |
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Assignee: Suzhou Darui Plastic Industry Co., Ltd. Assignor: Sheng Shouzhai Contract record no.: 2010340000180 Denomination of invention: Anti-static and flame-retardant composite for plastic conveyer roller of coal mine and its mfg. method Granted publication date: 20001108 License type: Exclusive License Open date: 19970423 Record date: 20100925 |
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