CN100400584C - High molecular plastic alloy powder for hot molten thick lining - Google Patents
High molecular plastic alloy powder for hot molten thick lining Download PDFInfo
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- CN100400584C CN100400584C CNB2006100179318A CN200610017931A CN100400584C CN 100400584 C CN100400584 C CN 100400584C CN B2006100179318 A CNB2006100179318 A CN B2006100179318A CN 200610017931 A CN200610017931 A CN 200610017931A CN 100400584 C CN100400584 C CN 100400584C
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Abstract
The present invention is one kind of high molecular plastic alloy powder for hot molten anticorrosive thick lining. The high molecular plastic alloy powder consists of linear low density polyethylene, isotatic polypropylene, chlorinated polyether, ultrahigh molecular weight polyethylene, white carbon black powder and other eight kinds of material. The high molecular plastic alloy powder has reasonable composition, anticorrosion, antistatic, antiageing, antiwear, environment friendship and other advantages.
Description
One, technical field
The present invention relates to a kind of antisepticise lining material, particularly a kind of high molecular plastic alloy powder for hot molten thick lining.
Two, background technology
Existing high molecule plastic protection against corrosion materials, how based on solvent based coating, contain a large amount of organic solvents in its solvent based coating, about 70% of the shared coating composition of solvent, these organic solvents want whole volatile emission in the coating film forming process in atmosphere, cause (VOC) severe overweight, the solvent based coating that China uses at present is up to millions of tons, wherein 70% organic compound volatile emission causes atmosphere seriously contaminated in atmosphere, causes public hazards.Therefore, must cause that country and governments at all levels show great attention to.Solvent based coating simultaneously in enormous quantities in storing, construction because inflammable, explosive, easy poisoning, be organic compound store and use in the potential safety hazard of the maximum that exists, very easily presence of fire and poisoning.
Being major hidden danger in safety in production not only in the solvent based coating, is social effects of pollution in environmental protection, atmosphere pollution, influences the people's health, and is the significant wastage of the resource and the energy, and some solvent itself is exactly fuel (as gasoline, ethanol, an ethers).
Especially solvent based coating is owing to there are a large amount of organic solvents can not carry out the thick film application, brush thinlyyer, and construction technology is loaded down with trivial details, and is long in time limit, production efficiency low, coating is lacked work-ing life.
From the eighties world oil crisis highlight; for save energy has been developed powder coating and application techniques in succession; with economize on resources, save the energy, nuisanceless, labour productivity is high and be convenient to carry out characteristics such as automation paint; become the direction of countries in the world coating development; and present powder coating technology and the kind of developing of China; only stay in film-type, single homopolymerization plastic powders kind, do not satisfy far away develop rapidly industrial, particularly to thick film lining rot-resistant needs.
Three, summary of the invention
At above-mentioned situation and rot-resistant actual needs, the present invention's purpose just provides a kind of new high molecular plastic alloy powder for hot molten thick lining, can be effective to corrosion protective lining, can only make film application and contaminate environment to overcome existing impregnating material, antiseptic property is poor, the problem that work-ing life is short, the technical scheme of its solution is, this composite powder is by linear low density polyethylene, isotatic polypropylene (IPP), penton (Pentone), ultrahigh molecular weight polyethylene(UHMWPE), ethylene-vinyl acetate copolymer (EVA), ethylene-methacrylic acid copolymer (EMAA), r-aminopropyltriethoxywerene werene (KH550), r-(2,3 glycidoxies) propyl trimethoxy silicane (KH560), the white carbon black powder, the chromoxide green powder, titanium dioxide, Graphite Powder 99 and antioxidant CA are formed, component of the present invention is scientific and reasonable, easily produce, non-environmental-pollution, the utilization ratio height, stable performance, being used for anticorrosion thick film lining easily produces, life-span is long, favorable anti-corrosion effect, existing corrosion proof function has antistatic again, anti-aging, function such as wear-resisting; Both ability strong medium corrosion also can anti-strong solvent, and all can use under low temperature or high temperature, feature with efficient, saving, environmental protection, energy-conservation, high-quality, innovation, be the new breakthrough on the antisepticise lining material, its Application and Development has huge economic and social benefit.
Four, embodiment
Below in conjunction with practical situation, the specific embodiment of the present invention is elaborated.
Provide by technical scheme, the present invention is by by weight: linear low density polyethylene 30-80 part, isotatic polypropylene 2-60 part, penton 1-40 part, ultrahigh molecular weight polyethylene(UHMWPE) 0.5-20 part, ethylene-vinyl acetate copolymer 2-8 part, ethylene-methacrylic acid copolymer 2-8 part, r-aminopropyltriethoxywerene werene 1-3 part, r-(2,3 glycidoxies) propyl trimethoxy silicane 1-3 part, white carbon black powder 2-4 part, chromoxide green powder 1.5-3 part, titanium dioxide 1.5-3 part, Graphite Powder 99 0.5-2 part and antioxidant CA 0.2-0.5 part are formed.
The particular case of each component sees the following form:
1, in concrete enforcement, the present invention can adopt the weight meter: 60 parts of linear low density polyethylenes, 13 parts of isotatic polypropylene, 10.8 parts of pentons, 1.5 parts of ultrahigh molecular weight polyethylene(UHMWPE)s, 3 parts of ethylene-vinyl acetate copolymers, 3 parts of ethylene-methacrylic acid copolymers, 2 parts of r-aminopropyltriethoxywerene werene, r-(2,3 glycidoxies) 1 part of propyl trimethoxy silicane, 2 parts in white carbon black powder, 1.5 parts in chromoxide green powder, 1.5 parts of titanium dioxides, 0.5 part of Graphite Powder 99 and 0.2 part of composition of antioxidant CA;
2, the present invention also can be by by weight: 40 parts of linear low density polyethylenes, 37.5 parts of isotatic polypropylene, 1.2 parts of pentons, 2 parts of ultrahigh molecular weight polyethylene(UHMWPE)s, 4 parts of ethylene-vinyl acetate copolymers, 4 parts of ethylene-methacrylic acid copolymers, 1.5 parts of r-aminopropyltriethoxywerene werene, r-(2,3 glycidoxies) 1.5 parts of propyl trimethoxy silicanes, 2.5 parts in white carbon black powder, 2.5 parts in chromoxide green powder, 2.5 parts of titanium dioxides, 0.55 part of Graphite Powder 99 and 0.25 part of composition of antioxidant CA;
3, the present invention also can be by by weight: 30 parts of linear low density polyethylenes, 30 parts of isotatic polypropylene, 5.8 parts of pentons, 4 parts of ultrahigh molecular weight polyethylene(UHMWPE)s, 8 parts of ethylene-vinyl acetate copolymers, 7 parts of ethylene-methacrylic acid copolymers, 2 parts of r-aminopropyltriethoxywerene werene, r-(2,3 glycidoxies) 2 parts of propyl trimethoxy silicanes, 3 parts in white carbon black powder, 3 parts in chromoxide green powder, 2.8 parts of titanium dioxides, 2 parts of Graphite Powder 99s and 0.4 part of composition of antioxidant CA.
In said components, wherein: linear (type) new LDPE (film grade) is to close the new LDPE (film grade) that forms by ethene and alpha-olefin copolymer, because its molecular side chain is a short chain, molecular structure is between the poly-second of linear high density and have between (high-pressure process) new LDPE (film grade) of long-chain branch, so its physical and mechanical properties is better than (common) new LDPE (film grade), in mechanical properties, the linear low density polyethylene tensile strength is than the high 50-70% of (common) new LDPE (film grade), elongation is high by 50%, and impact strength and low-temperature impact-resistant performance are all good than new LDPE (film grade).
Aspect physicals, under the equal densities situation, 122 ℃ of the fusing points of linear low density polyethylene, than 109.5 ℃ high of (common) new LDPE (film grade) fusing points, use temperature wide ranges (80 ℃-100 ℃) allows use temperature than (common) new LDPE (film grade), our experiments show that and want high 10-15 ℃, processing temperature scope (250-340 ℃) is wideer than (common) new LDPE (film grade) (250-300 ℃) simultaneously, and fluidity of molten is good, can improve the qualification rate of powder coating goods.It is better than (common) new LDPE (film grade) environmental stress crack resistance.So selecting it for use is main film forming substance.It had both kept (common) new LDPE (film grade) erosion resistance (at normal temperatures, any organic solvent all any effect can not take place, and anti-dissolubility is extremely excellent) like this, had overcome the shortcoming of (common) low density polyethylene aspect physical and mechanical properties again.Isotatic polypropylene (IPP) is a kind of high crystalline thermoplastics, has good thermotolerance, chemical erosion resistance and processing characteristics.Under harshness corrosion situation, use temperature is 107-121 ℃ continuously, and under uncharge situation, use temperature can reach 150 ℃, and the chemistry reflection does not all take place for it and most of medium (except the strong oxidizer).The characteristics of penton maximum are: corrosion-resistant extremely good, be only second to tetrafluoroethylene (plastics king).Use temperature is 120 ℃ continuously under harsh etching condition.Comprehensive mechanical performance is fine.Wear resisting property is not worse than nylon.Melt viscosity is low, good fluidity, and processing characteristics is excellent, does not produce internal stress, films stress cracking does not take place.Also having an outstanding good characteristic simultaneously is that it and metal have the advantages of good caking property energy, and the shearing resistance of coating and metal surpasses penton itself.It is in the high molecular plastic alloy composite powder coatings, not only promoted erosion resistance, the temperature tolerance of filming comprehensively, also fundamentally overcome the shortcoming of non-polar plastic (linear low density polyethylene (LLDPE) isotatic polypropylene (IPP) plastics) with metlbond power difference.Overcome plastics and metlbond power difference traditionally and be with the way that adds the welding steel silk screen the non-polar plastic firm attachment on metallic walls.Characteristics such as ultrahigh molecular weight polyethylene(UHMWPE) (UHMWPE), molecular weight are 1,000,000-5,000,000, and be long especially owing to molecular chain, and it has the physical and mechanical properties of many uniquenesses, and anti-dissolubility of erosion resistance and environmental stress crack resistance are extremely good.(it under 100 ℃ of temperature and 100% washings in the environmental stress cracking performance greater than 2000h), tensile strength is 2 times of (4000kg/cm of (common) high density polyethylene(HDPE)
2) up to 39.2Mpa, use temperature is 100-110 ℃, winter hardiness is good, can still can use under-296 ℃.Above four kinds of high molecule plastic blend are formed polyblend by certain science collocation, give full play to synergistic effect, be combined into corrosion-resistant goodly, the high-and low-temperature resistance performance is all good, and anti-stress cracking is excellent, good toughness, the composite powder coatings that intensity is high.Ethylene-vinyl acetate copolymerization (thing) body or be called ethane-acetic acid ethyenyl ester interpolymer (abbreviating EVA as) in the ethene side chain, introduce the polar acetoxy group because of, make EVA than PE more high resilience and flexibility, thereby environmental stress crack resistance obtains to improve, and comes modified poly ethylene (PE) and polypropylene (PP) with it.Ethene-(methyl) acrylic copolymer (EMAA) has outstanding binding property, with the cohesive force of its modification non-polar plastic and metal.R-aminopropyltriethoxywerene werene (KH550) and r-(2,3 glycidoxies) propyl trimethoxy silicane (KH560) adds in the composite powder as chemical coupling agent, chemical action by more function group, with chemical bond two kinds of difficult adherent plastics (nonpolar plastics PP, PE, Nylon) etc. firmly together, by r-aminopropyltriethoxywerene werene (KH550) and r-(2,3 glycidoxies) the chemical coupling effect of propyl trimethoxy silicane (KH560), make plastics and intermetallic, can good bond between plastics and plastics together.Titanium dioxide (TiO
2), chromoxide green powder (Cr
2O
3, chromoxide green is pulverized the powder of making), as the toning agent tackifier, can mix colours on the one hand, reduce the contraction of filming, increase bounding force, raising is coated with film toughness and intensity on the other hand, Graphite Powder 99 is a black, be to pulverize the powder of making,, can shield and keep away ultraviolet destruction as the static inhibitor ultraviolet screener by graphite, prevent to wear out, improve the weathering resistance of filming.Because it can conduction, heat conduction, can eliminate static, disperse thermal stresses.The white carbon black powder is active silica (SiO again
2) powder, be to pulverize the powder of making by white carbon black, can prevent coating flowing hanging and be full of cracks, be a kind of good thixotropic agent; Antioxidant CA can prevent the plastics oxidation as oxidation inhibitor, prolongs plastics work-ing life.By the high molecular plastic alloy composite powder that above-mentioned many compositions constituted, be the superior new variety of over-all properties, can be widely used in the numerous areas such as oil, chemical industry, metallurgy, electric power, medicine, light textile, traffic, ocean, being very good corrosion-resistant and protection product innovation, is that quality is very good to the great creation of anticorrosive, existing any anticorrosive all can't be compared, now after tested, melting index (MI) is up to 220 ℃ of g/10min 85, particularly:
1, do not contain organic solvent in the composite powder of the present invention, the discharging of volatile organic compounds (VOC) equals zero.Compare with solvent based coating, account for 70% organic solvent-dimethylbenzene, toluene, vinyl acetic monomer, N-BUTYL ACETATE, acetone, ethanol, butanols, pimelinketone, methylethylketone of component in the solvent based coating, gasoline etc. in coating film forming all volatile organic compoundss (VOC) be discharged in the atmospheric layer.The annual solvent based coating that consumes millions of tons of China, poisonous, deleterious (VOC) pollutant atmosphere of millions of ton, its consequence is very fearful and surprising.This shows; high molecular plastic alloy composite powder coatings hot molten thick lining technology; use and realize volatile organic compounds (VOC) zero release; meet China fully to requirement on environmental protection; and avoided the harm of organic solvent to operator ' s health, also avoided simultaneously producing storage and dangerous hidden danger such as fire in transit, poisoning.China for high speed development, the consumption of the energy at present existing 40% will be from external import, this breach also can be bigger from now on, the prevailing present situation of this solvent based coating must change as early as possible, otherwise millions of tons organic compound is emitted in the atmosphere, also is a kind of significant wastage of resource.So greatly developing the high molecular plastic alloy composite powder of the present invention this (VOC) zero release is to be of great immediate significance.
2, in the composite powder hot melt rotational molding technology of the present invention, the utilization ratio of its plastic powders reaches 100%.It is through accurate calculation film forming thickness, quantitatively inject, through the hot melt rotation all by bedding on by the lining metal surface, and be the thickness of uniformity.This is that other any coating process institute is irrealizable.And the thickness that can reach Theoretical Calculation is consistent with actual measurement thickness index.Can realize not wasting the high utilization rate of resource.And coating thickness can be selected arbitrarily to determine that thickness can be at 3 millimeters, 4 millimeters fully according to actual needs ... select for use arbitrarily up to reaching more than 10 millimeters, drop into the powder amount by Theoretical Calculation and reach the backing layer precise thickness.No powder loss economizes in raw materials very much in whole coating process.
3, composite powder of the present invention is as producing hot melt rotational molding technology lining pipeline and equipment to being easy to realize the streamline production of automatization, only need equipment, the thermal source of pipeline preheating distributes rationally, each position of equipment pipe all is subjected to the preheating of uniform and stable, the temperature at each position also is consistent, after injecting composite powder, the degree of powder hot melt also is consistent, because melting index of the present invention is up to 85, through rotating the very fast levelling of plastics of viscosity flow flexibly, make each position consistency of thickness, smooth and smooth, coating quality stability is very high, life cycle of the product is short, the efficient height, time consumption and energy consumption is few, can finish lining in last 60 minute at production line to any equipment, also can finish lining in 2 hours to especially big property equipment.
4, composite powder of the present invention is multi-functional, comprehensive strong, and existing corrosion proof function has antistatic, anti-aging, wear-resisting functions again; Both ability strong medium corrosion also can anti-strong solvent, and all can use under low temperature or high temperature.Have an important breakthrough on the feature, particularly anti-corrosion thick of efficient, saving, environmental protection, energy-conservation, high-quality, innovation, solved that people want to solve for a long time and unsolved protection against corrosion on technical barrier, economic and social benefit is huge.
Claims (4)
1. high molecular plastic alloy powder for hot molten thick lining, it is characterized in that, it is by weight: linear low density polyethylene 30-80 part, isotatic polypropylene 2-60 part, penton 1-40 part, ultrahigh molecular weight polyethylene(UHMWPE) 0.5-20 part, ethylene-vinyl acetate copolymer 2-8 part, ethylene-methacrylic acid copolymer 2-8 part, r-aminopropyltriethoxywerene werene 1-3 part, r-(2,3 glycidoxies) propyl trimethoxy silicane 1-3 part, white carbon black powder 2-4 part, chromoxide green powder 1.5-3 part, titanium dioxide 1.5-3 part, Graphite Powder 99 0.5-2 part and antioxidant CA 0.2-0.5 part are formed.
2. high molecular plastic alloy powder for hot molten thick lining according to claim 1, it is characterized in that, by by weight said: 60 parts of linear low density polyethylenes, 13 parts of isotatic polypropylene, 10.8 parts of pentons, 1.5 parts of ultrahigh molecular weight polyethylene(UHMWPE)s, 3 parts of ethylene-vinyl acetate copolymers, 3 parts of ethylene-methacrylic acid copolymers, 2 parts of r-aminopropyltriethoxywerene werene, r-(2,3 glycidoxies) propyl trimethoxy silicane is 1 part, 2 parts in white carbon black powder, 1.5 parts in chromoxide green powder, 1.5 parts of titanium dioxides, 0.5 part of Graphite Powder 99 and 0.2 part of composition of antioxidant CA.
3. high molecular plastic alloy powder for hot molten thick lining according to claim 1, it is characterized in that, by by weight said: 40 parts of linear low density polyethylenes, 37.5 parts of isotatic polypropylene, 1.2 parts of pentons, 2 parts of ultrahigh molecular weight polyethylene(UHMWPE)s, 4 parts of ethylene-vinyl acetate copolymers, 4 parts of ethylene-methacrylic acid copolymers, 1.5 parts of r-aminopropyltriethoxywerene werene, r-(2,3 glycidoxies) propyl trimethoxy silicane is 1.5 parts, 2.5 parts in white carbon black powder, 2.5 parts in chromoxide green powder, 2.5 parts of titanium dioxides, 0.55 part of Graphite Powder 99 and 0.25 part of composition of antioxidant CA.
4. high molecular plastic alloy powder for hot molten thick lining according to claim 1, it is characterized in that, by by weight said: 30 parts of linear low density polyethylenes, 30 parts of isotatic polypropylene, 5.8 parts of pentons, 4 parts of ultrahigh molecular weight polyethylene(UHMWPE)s, 8 parts of ethylene-vinyl acetate copolymers, 7 parts of ethylene-methacrylic acid copolymers, 2 parts of r-aminopropyltriethoxywerene werene, r-(2,3 glycidoxies) propyl trimethoxy silicane is 2 parts, 3 parts in white carbon black powder, 3 parts in chromoxide green powder, 2.8 parts of titanium dioxides, 2 parts of Graphite Powder 99s and 0.4 part of composition of antioxidant CA.
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| CN102134350B (en) * | 2010-12-31 | 2012-07-18 | 广州鹿山新材料股份有限公司 | Anticorrosive antiskid powder for outside of 3PP pipeline for oil and gas transmission and preparation method thereof |
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| CN105156778A (en) * | 2015-09-16 | 2015-12-16 | 北京科慧通智慧科技有限公司 | Antistatic hose and preparation method thereof |
| CN105179827A (en) * | 2015-09-16 | 2015-12-23 | 北京科慧通智慧科技有限公司 | Acid-base resistant hose and manufacturing method thereof |
| CN108825892A (en) * | 2015-09-16 | 2018-11-16 | 天津中天精科科技有限公司 | A kind of hose |
| CN105237862A (en) * | 2015-09-30 | 2016-01-13 | 滁州优胜高分子材料有限公司 | High-oil resistance ethylene-vinyl acetate copolymer/chlorinated polyether composite material and preparation method thereof |
| CN106366429A (en) * | 2016-08-31 | 2017-02-01 | 胡中 | Metal plastic lining preservative preparation |
| CN106437089A (en) * | 2016-11-22 | 2017-02-22 | 江苏欧圣木业有限公司 | PE-containing wear-resisting and high-strength laminate flooring |
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