CN103724876B - polyvinyl chloride/chlorinated polyethylene blend and processing method thereof - Google Patents
polyvinyl chloride/chlorinated polyethylene blend and processing method thereof Download PDFInfo
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Abstract
The present invention is applicable to plastics chemical industry building materials field, providing a kind of Polyvinyl Chloride/Chlorinated Polyethylene blend and processing method thereof, this Polyvinyl Chloride/Chlorinated Polyethylene blend includes following raw material: Corvic, chlorinated polyethylene resin, stabilizer, coal-based synthetic wax, modified zeolite powder; Its preparation method heats for being put into by Corvic in mixing facilities, when temperature rises to 90-98 DEG C, add stabilizer, filler, chlorinated polyethylene, when temperature reaches 120-130 DEG C, add lubricant and carry out mixing, after mixing end, compound is carried out cooling process and obtains Polyvinyl Chloride/Chlorinated Polyethylene blend, wherein, described filler is modified zeolite powder, and described lubricant is coal-based synthetic wax. Polyvinyl Chloride/Chlorinated Polyethylene blend cantilever beam impact strength performance provided by the invention and yield tensile strength performance are good, and this preparation method is simple to operate and cost is low.
Description
Technical field
The invention belongs to plastics technical field of polymer materials, particularly relate to a kind of Polyvinyl Chloride/Chlorinated Polyethylene blend and processing method thereof.
Background technology
Polrvinyl chloride (polrvinyl chloride) is the materials for construction of a kind of applied range, according to the difference adding plasticizer, hard and soft PVC two class can be divided into, be widely used in fields such as preparing sheet material, tubing, sole, toy, door and window, wire outer skin, stationery. In order to meet instructions for use, RPVC shock-resistant, weathering, resistance to combustion, corrosion-resistant in require higher, it both needs possess certain intensity, has certain toughness again, and namely Product checking need to be test by cantilever beam impact strength and yield tensile strength. And there is the defect that impact strength performance is not enough in existing general polrvinyl chloride, in order to improve the impact strength of the toughness of pvc material and intensity-namely improve product, common way is that the rubber elastomer compositions such as MBS, ACR of adding different proportion in the product carry out toughness reinforcing. Add the pvc material of MBS, ACR constituents for a long time under low temperature or room temperature intensity better, but, the yield tensile strength of modified polyvinyl chloride material reduces; On the other hand, owing to the price of the rubber elastomer of MBS, ACR etc is all high, their cost used increasing modified polyvinyl chloride.
Summary of the invention
The purpose of the embodiment of the present invention is in that to provide a kind of Polyvinyl Chloride/Chlorinated Polyethylene blend, it is intended to solve existing Polyvinyl Chloride/Chlorinated Polyethylene blend can not meet impact strength and yield tensile strength all better, simultaneously Heat stability is good, problem that cost is low.
The embodiment of the present invention is achieved in that a kind of Polyvinyl Chloride/Chlorinated Polyethylene blend, including the recipe ingredient of following portions by weight:
And, the processing method that the another object of the embodiment of the present invention is in that to provide a kind of Polyvinyl Chloride/Chlorinated Polyethylene blend, it is intended to solve that manufacturing cost is high and problem that the product impact strength that manufactures and yield tensile strength performance, heat stability performance are bad.
The embodiment of the present invention is achieved in that the processing method of a kind of Polyvinyl Chloride/Chlorinated Polyethylene blend, comprises the following steps:
Corvic is put in mixing facilities and heat, when temperature rises to 90-98 DEG C, add stabilizer, filler, chlorinated polyethylene resin, when temperature reaches 120-130 DEG C, add lubricant and carry out mixing, after mixing end, compound is carried out cooling process and obtains Polyvinyl Chloride/Chlorinated Polyethylene blend, wherein, described filler is modified zeolite powder, and described lubricant is coal-based synthetic wax.
Embodiments provide a kind of Polyvinyl Chloride/Chlorinated Polyethylene blend, in this Polyvinyl Chloride/Chlorinated Polyethylene blend, Corvic is 10:(6��12 with the weight ratio of chlorinated polyethylene resin), with zeolite powder for filler, coal-based synthetic wax is lubricant, the Polyvinyl Chloride/Chlorinated Polyethylene blend impact strength performance obtained and yield tensile strength can improve, and product cost reduces, the processing method that the embodiment of the present invention additionally provides a kind of Polyvinyl Chloride/Chlorinated Polyethylene blend simultaneously, the method cost is low, simple to operate, the Polyvinyl Chloride/Chlorinated Polyethylene blend of preparation has impact strength performance, yield tensile strength performance and the good advantage of thermal stability.
Accompanying drawing explanation
Fig. 1 is the melt temperature figure of the coal-based synthetic wax measured by differential scanning calorimetry that the embodiment of the present invention provides;
Fig. 2 is the equivalent paraffin that provides of the embodiment of the present invention and the rheological curve figure of coal-based synthetic wax;
Fig. 3 is the Paris white that provides of the embodiment of the present invention and the Dynamic Thermal of modified zeolite powder stablizes comparison diagram.
Detailed description of the invention
In order to make the technical problem to be solved in the present invention, technical scheme and beneficial effect clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated. Should be appreciated that specific embodiment described herein is only in order to explain the present invention, is not intended to limit the present invention.
Embodiments provide a kind of Polyvinyl Chloride/Chlorinated Polyethylene blend, including the recipe ingredient of following portions by weight:
Specifically, above-mentioned Corvic component is as one of matrix component, its mechanical performance, fire resistance (fire-retardant value is more than 40) is all better, high (the resistance to concentrated hydrochloric acid of chemical proofing, concentration is the sulphuric acid of 90%, concentration is nitric acid and the sodium hydroxide of concentration 20% of 60%), in addition, Corvic has the dielectric properties of excellence, therefore electrical insulating property is good, can be widely used for all trades and professions product of all kinds, as: wire outer skin, optical cable coating, footwear, hands bag, bag, jewelry, signboard and billboard, building decoration articles for use, furniture, ornament, roller, trunnion, door curtain, rolling door, medical assistance articles for use, glove etc.
Above-mentioned chlorinated polyethylene resin component, as one of matrix component, has excellent weather resisteant, ozone high temperature resistant, resistance to, chemical-resistant resistance and ageing-resistant performance, simultaneously its oil resistivity, anti-flammability and tinctorial property, toughness good (still having pliability at-30 DEG C). Additionally, chlorinated polyethylene resin and Corvic have the good compatibility, the toughness that Polyvinyl Chloride/Chlorinated Polyethylene blend is overall can be improved so that the yield tensile strength performance of Polyvinyl Chloride/Chlorinated Polyethylene blend improves.
Above-mentioned Corvic and chlorinated polyethylene resin are as the matrix component of Polyvinyl Chloride/Chlorinated Polyethylene blend, owing to there is segment intersolubility between chlorinated polyethylene and polrvinyl chloride, it is thus provided that adhesion between the two, thus realizing both blended, compatible, and then reach the purpose impact property of Corvic being modified by chlorinated polyethylene resin.Polrvinyl chloride adds chlorinated polyethylene and can significantly improve impact strength, improve its processing characteristics.
In Polyvinyl Chloride/Chlorinated Polyethylene blend, increase along with chlorinated polyethylene content, chlorinated polyethylene is converted into the network structure surrounding polrvinyl chloride primary particle from discrete particle, and this cancellated formation is consistent with material transformation from brittle fracture to ductile rupture. Discovery is repeatedly studied through inventor, in order to balance impact strength performance and the yield tensile strength performance of Polyvinyl Chloride/Chlorinated Polyethylene blend, the weight ratio of described Corvic and chlorinated polyethylene resin is preferably 100:(6-12), more preferably 100:(8-12). In a particular embodiment, Corvic is 100:10 with the weight ratio of chlorinated polyethylene resin. The blend prepared when polrvinyl chloride mixes with mass ratio 100:10 with chlorinated polyethylene, testing through multinomial performance, result is shown as: bending strength is up to 56MPa, and tensile yield strength reaches 30MPa, elongation at break is 120%, and simple beam impact strength is at room temperature 4.6KJ/m2, 0 DEG C is 6KJ/m2��
In chlorinated polyethylene resin, the compatibility of chlorinated polyethylene and pvc material is affected bigger by chlorinity and chlorine atom distribution situation in Polyethylene Chain. Along with the increase of chlorinity, the glass transition temperature of chlorinated polyethylene raises, and its state is become rubber-like material by the thermoplastic of toughness, then becomes close to hide-like, eventually becomes hard and crisp hard material. In above-mentioned Polyvinyl Chloride/Chlorinated Polyethylene blend, in described chlorinated polyethylene resin, chlorinity is preferably 36-48%. When chlorinity is 36��48%, due to chlorinated polyethylene and the existing good compatibility of polrvinyl chloride, does not lose again corpuscular property and dispersibility simultaneously, and vitrification point is relatively low, is the good modifying agent of impact resistance of polyvinyl chloride.
In order to prevent Polyvinyl Chloride/Chlorinated Polyethylene blend from decomposing, aging, extend its heat-stable time, it is necessary to add appropriate stabilizer. As the presently preferred embodiments, described stabilizer is at least one in calcium zinc stabilizer, organic tin stabilizer, organic stabilizer, zinc barium stabilizer; As it is preferred that embodiment, described stabilizer selects processing characteristics, heat stability, light stability, the transparency and tinting strength, tinting power effect all good, and the calcium zinc stabilizer of environment-protecting asepsis.
Being generally of higher viscosity after melting due to high polymer, in the course of processing, easily produce friction between melted high polymer and between itself and processing equipment surface, the former is called internal friction, and the latter is called external friction. Internal friction, by increasing the melt-flow viscosity of polymer, reduces its mobility, can cause the overheated, aging of material time serious; External friction then makes to adhere between polymer melt and process equipment and other contact material surfaces, raises with temperature, and coefficient of friction enlarges markedly. After goods are deviate from from mould, product surface becomes coarse, lacks gloss or flow liner occurs. In order to reduce this two classes friction, it is necessary to add to improve lubricity, reduce friction, reduce the lubricant of Interface Adhesion performance. Paraffin is widely used as lubricant and the releasing agent of various plastics with its cheap price and stronger outer lubrication. It is mainly composed of linear paraffin (> 60%), and minority is isoparaffin (23%��30%) and cycloalkane (23%��30%).But, the poor compatibility of itself and polrvinyl chloride is caused just because of this non-polar nature of paraffin, heat stability is low, affects goods transparency and reduces product strength. Along with the high performance requirements of the progress of technology and goods, this low value-added lubrication product of paraffin is being gradually backed out high-grade polrvinyl chloride product field. In above-mentioned Polyvinyl Chloride/Chlorinated Polyethylene blend, select coal-based synthetic wax as lubricant.
Coal-based synthetic wax belongs to methylene polymer, is hydrocarbon-based synthesis gas or the alkane of natural gas synthesis. The features such as coal-based synthetic wax has high-melting-point, low viscosity, hardness is big, needle penetration is little, it is as shown in table 1 below with paraffin physical and chemical index.
Table 1
Coal-based synthetic wax is by by carbon monoxide and hydrogen under high pressure, adding that special catalyst is prepared from through synthetic reaction. Unique synthesis technique creates the distinctive long linear structure of coal-based synthetic wax, this long linear structure aligns in each component of Polyvinyl Chloride/Chlorinated Polyethylene blend and the interface of process equipment, concurrently form lubricant molecule layer, reduce friction between the two, make material be not adhere on equipment; Simultaneously, due to the long linear structure that coal-based synthetic wax is unique, the counter balance torque of the significantly more efficient reduction system of energy, extends the fusion time of Polyvinyl Chloride/Chlorinated Polyethylene blend simultaneously, makes Polyvinyl Chloride/Chlorinated Polyethylene blend that time enough can be had when extruding to plastify. Secondly, owing to coal-based synthetic wax viscosity is low, contribute to the dispersion of filler in Polyvinyl Chloride/Chlorinated Polyethylene blend when batch mixing, particularly in the extrusion of high viscosity systems, effect is obvious, therefore can be effectively improved the speed of production of Polyvinyl Chloride/Chlorinated Polyethylene blend product. Additionally, the high-melting-point of coal-based synthetic wax can effectively reduce its precipitation in process of production, the effect of lubricant can be given full play in the relatively little of situation of addition, thus what decrease lubricant makes consumption. In embodiments of the present invention, the addition fewer than common paraffin 40%��50% of coal-based synthetic wax, the lustrous surface in Polyvinyl Chloride/Chlorinated Polyethylene blend can be significantly improved, and reduce production cost. Fig. 1 is the melt temperature of the coal-based synthetic wax utilizing differential scanning calorimeter to measure. It can be seen that the most high melting temperature of coal-based synthetic wax is close to 103 DEG C, higher melt temperature can guarantee that the amount of precipitation of lubrication prescription is less under identical working condition. Fig. 2 and table 2 below respectively when other components and content thereof are identical, curve that the rheological property of equivalent paraffin and coal-based synthetic wax obtains and related data. Can be seen that, take the paraffin of equivalent and coal-based synthetic wax as lubricant, in the Polyvinyl Chloride/Chlorinated Polyethylene blend prepared, through detection, result shows: add the minimum torque of the Polyvinyl Chloride/Chlorinated Polyethylene blend product of coal-based synthetic wax, plasticizing moment of torsion, counter balance torque substantially reduce, fusion time increases, it can be seen that, coal-based synthetic wax can improve impact strength and the yield tensile strength of Polyvinyl Chloride/Chlorinated Polyethylene blend.
Table 2
The same with other thermoplastics, Polyvinyl Chloride/Chlorinated Polyethylene blend according to the difference used, is commonly incorporated into the filler that quantity does not wait in the course of processing, and these filleies mostly are inorganic mineral, are typically in resin and only serve incremental contribution. Conventional filler has inorganic mineral, such as calcium carbonate, Pulvis Talci, Muscovitum, Kaolin, bentonite etc.; Synthetic powder material, such as white carbon black, white carbon, titanium dioxide, aluminium oxide etc. Calcium carbonate powder has become most widely used with its abundant mineral resources, cheap price and easily processing, the advantage such as nontoxic, the inorganic mineral split filler that consumption is maximum. But the special physico-chemical character due to calcium carbonate powder, cause that it is applied to during polrvinyl chloride product filler still defective, as goods proportion increases, tensile property declines, difficulty of processing increase etc., additionally, calcium carbonate cannot improve the hot steady and light stability of polrvinyl chloride product as polrvinyl chloride product filler. In the embodiment of the present invention, it is preferable that modified zeolite powder is as filler. Modified zeolite powder is obtained by natural zeolite rock, its preparation method be in zeolite powder add percentage by weight be the phthalic acid octadecyl of 1-2% as modifying agent, in high-speed mixing equipment mixing after, heat to 100-120 DEG C, cooling process, get product.The network-like structure of its uniqueness of modified zeolite powder makes it have excellent adsorptivity, ion-exchange selectivity, acid resistance and heat stability. Table 3 below gives calcium carbonate and modified zeolite powder physical and chemical index. By in table it can be seen that the whiteness of modified zeolite powder is higher than calcium carbonate, and its proportion is less than calcium carbonate. Density reaches 2.9g/cm3Calcium carbonate joins in Polyvinyl Chloride/Chlorinated Polyethylene blend product, and when adding number and being 30 parts, extrudate density is up to 1.6g/cm3; When adding number and being 50 parts, its Polyvinyl Chloride/Chlorinated Polyethylene blend product density is up to 1.8g/cm3. Density increases the Polyvinyl Chloride/Chlorinated Polyethylene blend product that length, area, the calculating of product number are worth, likely length, area is caused to decline or the minimizing of product number because density increases, not only counteract the interests that cheap mineral powders brings, it is also possible to lose more than gain. By contrast, the density of modified zeolite powder about 2.1g/cm3 is added to as filler will be greatly lowered the density of manufactured goods in goods, make goods can alleviate own wt under identical volume, in order to transport and project installation. Meanwhile, add to inorganic filler for additive and Polyvinyl Chloride/Chlorinated Polyethylene blend product can reduce the shrinkage factor of plastic, linear expansion coefficient, croop property, for shaping the condition of creating. But dimensional contraction rate diminishes and can cause the problem such as surface tear and deformation, additionally, along with the increase of particulate calcium carbonate addition, the active force between granule and PVC base system increases, melt viscosity increases, and production process counter balance torque increases. Utilizing the feature of modified zeolite powder ultra-fine grain diameter, powder body can play adequate lubrication in Corvic, thus can be effectively reduced the melt viscosity of pvc material to reduce the purpose of production process counter balance torque. Therefore, used the filler as Polyvinyl Chloride/Chlorinated Polyethylene blend, the yield tensile strength of Polyvinyl Chloride/Chlorinated Polyethylene blend product can have been improved.
Table 3
Secondly, the interpolation of inorganic filler can improve the strength and stiffness of plastic, the opposing impact of goods and heat deformability significantly improve, but it is as the increase of inorganic filler consumption, the hot strength of polyvinyl chloride blend all has decline in various degree, according to the difference of inorganic material self structure, the impact of polrvinyl chloride product hot strength is also variant. Table 4 below shows when other components and content thereof are identical, the yield tensile strength test result of the Polyvinyl Chloride/Chlorinated Polyethylene blend prepared with kieselguhr, calcium carbonate, zeolite powder for filler respectively, result shows that filler adds the change of front and back Polyvinyl Chloride/Chlorinated Polyethylene blend product hot strength, can be seen that granular calcium carbonate and random kieselguhr as filler owing to it is easy to when being subject to force-extension and PVC base system unsticking, thus the hot strength of polrvinyl chloride product is affected bigger. And modified zeolite powder adds in Polyvinyl Chloride/Chlorinated Polyethylene as filler, when Polyvinyl Chloride/Chlorinated Polyethylene is stretched load, filler is stronger with the bonding ratio of PVC base system, can play part carrying effect, thus improving its tensile strength performance.
Table 4
Additionally, in the course of processing of polrvinyl chloride, igelite only more than 160 DEG C could machine-shaping, and owing to the structural property of polrvinyl chloride self makes it start thermal decomposition when 120��130 DEG C, discharge hydrogen chloride gas.Therefore, it is suppressed that or delay the thermal degradation of polrvinyl chloride to become link indispensable one in the polrvinyl chloride course of processing. Repeatedly studying discovery through inventor, the modified zeolite powder obtained through natural zeolite rock processed has the network structure of uniqueness, and the network structure of this uniqueness makes it have that excellent adsorptivity, ion-exchange selectivity and light is steady, heat stability. When modified zeolite powder adds in formula as the filler of Polyvinyl Chloride/Chlorinated Polyethylene blend product, it is possible to effectively absorb the hydrogen chloride gas that goods decomposite in the course of processing or through ultraviolet radiation, improve heat stability and the light resistance of goods. In Polyvinyl Chloride/Chlorinated Polyethylene blend produces, replace calcium carbonate with zeolite powder, it is possible to decrease cost, product light weight are durable, and saw limit and add and do not produce spark man-hour. In accompanying drawing 3, a is Paris white, b is modified zeolite powder, it represents in temperature is under 190 DEG C of conditions, the sample adopting Paris white and modified zeolite powder to prepare carrying out carrying out in reddish tint static heat respectively stablize Experimental comparison and scheme, wherein 1-6 represents that the static heat that the process time is 5min, 10min, 15min, 20min, 25min, 30min Paris white and modified zeolite powder stablizes comparison diagram respectively. In conjunction with data in accompanying drawing 3 and table 5 below it can be seen that under same thermal stable condition, modified zeolite powder is owing to having good thermal stability, thus can better delay the thermal decomposition of Polyvinyl Chloride/Chlorinated Polyethylene goods. Therefore, using modified zeolite powder as polrvinyl chloride product filler while guaranteeing product tensile strength and processing characteristics, moreover it is possible to be effectively improved the hot steady and light stability of goods, have the advantage that other inorganic powders are incomparable.
Table 5
The Polyvinyl Chloride/Chlorinated Polyethylene blend that the embodiment of the present invention provides, its impact strength and yield tensile strength performance are good; Add coal-based synthetic wax as lubricant, can not only more efficiently friction between lightening material and between itself and processing equipment surface, make the product surface produced smooth, improve product quality and thermal stability, and reduce the cost of Polyvinyl Chloride/Chlorinated Polyethylene blend; Additionally, the embodiment of the present invention adopts the zeolite powder after improveing as filler, it is effectively improved heat stability and the light stability of goods, has the advantage that other inorganic powders are incomparable.
Correspondingly, the embodiment of the present invention additionally provides the processing method of a kind of Polyvinyl Chloride/Chlorinated Polyethylene blend, comprises the following steps:
Corvic is put in mixing facilities and heat, when temperature rises to 90-98 DEG C, add stabilizer, filler, chlorinated polyethylene resin, when temperature reaches 120-130 DEG C, add lubricant and carry out mixing, after mixing end, compound is carried out cooling process and obtains Polyvinyl Chloride/Chlorinated Polyethylene blend, wherein, described filler is modified zeolite powder, and described lubricant is coal-based synthetic wax.
Specifically, in the processing method of above-mentioned Polyvinyl Chloride/Chlorinated Polyethylene blend, affiliated mixing facilities is unrestricted, and mixing facilities conventional in this area is all in protection scope of the present invention. As specific embodiment, affiliated mixing facilities is preferably the mixer of electrified heating.
In the processing method of above-mentioned Polyvinyl Chloride/Chlorinated Polyethylene blend, described stabilizer, filler, chlorinated polyethylene resin add in raw material weight ratio, adding order can be any, as the presently preferred embodiments, Corvic is put into heat treated in mixing facilities by the present invention, when temperature rises to 90��98 DEG C, is initially charged stabilizer, make it be dispersed in pvc material, be subsequently adding modified zeolite powder and chlorinated polyethylene resin.Owing to the fusing point of coal-based synthetic wax is higher, the present invention preferably adds the coal-based synthetic wax of lubricant when temperature reaches 120-130 DEG C, and now coal-based synthetic wax is in uniform molten condition, can effectively alleviate the friction between component and component and equipment.
After having added said components, carried out mixing, mixing mixing 8-10min, the more preferably 10min when 2000-4000rpm/min.
After mixing end, batch mixing being carried out cooling process, as preferred preferred embodiment, described cooling treatment method adopts and carries out cooling process with the rate of temperature fall of 5-10 DEG C/min. As it is preferred that embodiment, described cooling processes and adopts cold alr mode, and as specific embodiment, cold stirring adopts addition cooling water to be at a slow speed stirred. The time that cooling processes does not limit, and is down to less than 45 DEG C with temperature and is advisable.
Compound after cooling can need to be packaged into finished product according to difference, and packing specification is unrestricted, it is possible to packs by 25 kilograms/woven bag.
The method can be used for the preparation Polyvinyl Chloride/Chlorinated Polyethylene blend containing above-mentioned parts by weight component, it is also possible in the preparation of other Polyvinyl Chloride/Chlorinated Polyethylene blends. It is good that the method cost Polyvinyl Chloride/Chlorinated Polyethylene blend low, simple to operate, preparation has impact strength performance, yield tensile strength performance and thermal stability.
Embodiment one
A kind of Polyvinyl Chloride/Chlorinated Polyethylene blend, including the recipe ingredient of following portions by weight:
Embodiment two
A kind of Polyvinyl Chloride/Chlorinated Polyethylene blend, including the recipe ingredient of following portions by weight:
Embodiment three
A kind of Polyvinyl Chloride/Chlorinated Polyethylene blend, including the recipe ingredient of following portions by weight:
Embodiment four
A kind of Polyvinyl Chloride/Chlorinated Polyethylene blend, including the recipe ingredient of following portions by weight:
Comparative example
A kind of Polyvinyl Chloride/Chlorinated Polyethylene blend, including the recipe ingredient of following portions by weight:
The Polyvinyl Chloride/Chlorinated Polyethylene blend of above-described embodiment one with comparative example is carried out performance test, and result is described in table 6 below:
Table 6
Embodiment five
A kind of processing method of Polyvinyl Chloride/Chlorinated Polyethylene blend, the step of processing is divided into:
Corvic is put in mixing facilities and heat, when being warming up to 95 DEG C, add calcium zinc stabilizer, it is then respectively adding improvement zeolite powder filler, chlorinated polyethylene, adding coal-based synthetic wax when temperature reaches 120-130 DEG C and carry out mixing, mixing 10min, after carrying out cooling process by compound after mixing end, discharging after being cooled to 40 DEG C, is packaged to be Polyvinyl Chloride/Chlorinated Polyethylene blend
Embodiment six
A kind of processing method of Polyvinyl Chloride/Chlorinated Polyethylene blend, the step of processing is divided into:
Corvic is put in mixing facilities and heat, when being warming up to 90 DEG C, add zinc barium stabilizer, it is then respectively adding improvement zeolite powder filler, chlorinated polyethylene, adding coal-based synthetic wax when temperature reaches 120-130 DEG C and carry out mixing, mixing 10min, after compound carrying out after mixing end adding at a slow speed cooling water-cooled but processing, discharging after being cooled to 35 DEG C, is packaged to be Polyvinyl Chloride/Chlorinated Polyethylene blend
Embodiment seven
A kind of processing method of Polyvinyl Chloride/Chlorinated Polyethylene blend, the step of processing is divided into:
Corvic is put in mixing facilities and heat, when being warming up to 98 DEG C, add organic tin stabilizer, it is then respectively adding improvement zeolite powder filler, chlorinated polyethylene, adding coal-based synthetic wax when temperature reaches 120-130 DEG C and carry out mixing, mixing 10min, after carrying out cooling process by compound after mixing end, discharging after being cooled to 40 DEG C, is packaged to be Polyvinyl Chloride/Chlorinated Polyethylene blend
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all any amendment, equivalent replacement and improvement etc. made within the spirit and principles in the present invention, should be included within protection scope of the present invention.
Claims (10)
1. a Polyvinyl Chloride/Chlorinated Polyethylene blend, including the recipe ingredient of following portions by weight:
Wherein, described modified zeolite powder is obtained by natural zeolite rock, and its preparation method is that addition percentage by weight is that the phthalic acid octadecyl of 1-2% is as modifying agent in zeolite powder, in high-speed mixing equipment after mixing, heating to 100-120 DEG C, cooling processes, and gets product.
2. Polyvinyl Chloride/Chlorinated Polyethylene blend as claimed in claim 1, it is characterised in that: the weight ratio of described Corvic and chlorinated polyethylene resin is 100:(8-12).
3. Polyvinyl Chloride/Chlorinated Polyethylene blend as claimed in claim 1 or 2, it is characterised in that: the weight ratio of described Corvic and chlorinated polyethylene resin is 100:10.
4. Polyvinyl Chloride/Chlorinated Polyethylene blend as claimed in claim 1 or 2, it is characterised in that: in described chlorinated polyethylene resin, chlorinity is 36-48%.
5. Polyvinyl Chloride/Chlorinated Polyethylene blend as claimed in claim 1 or 2, it is characterised in that: described stabilizer is at least one in calcium zinc stabilizer, organic stabilizer, zinc barium stabilizer.
6. a processing method for Polyvinyl Chloride/Chlorinated Polyethylene blend, comprises the following steps:
Corvic is put in mixing facilities and heat, when temperature rises to 90-98 DEG C, add stabilizer, filler, chlorinated polyethylene resin, when temperature reaches 120-130 DEG C, add lubricant and carry out mixing, after mixing end, compound is carried out cooling process and obtains Polyvinyl Chloride/Chlorinated Polyethylene blend, wherein, described filler is modified zeolite powder, and described lubricant is coal-based synthetic wax.
7. the processing method of Polyvinyl Chloride/Chlorinated Polyethylene blend as claimed in claim 6, it is characterised in that: it is characterized in that described mixing time is 8-10min.
8. the processing method of Polyvinyl Chloride/Chlorinated Polyethylene blend as claimed in claims 6 or 7, it is characterised in that: described cooling processes and compound is cooled to less than 45 DEG C.
9. the processing method of Polyvinyl Chloride/Chlorinated Polyethylene blend as claimed in claim 8, it is characterised in that: described cooling treatment method adopts and carries out cooling process with the rate of temperature fall of 5-10 DEG C/min.
10. the processing method of Polyvinyl Chloride/Chlorinated Polyethylene blend as claimed in claims 6 or 7, it is characterised in that the revolution of described mixing facilities is 2000-4000rpm.
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| CN101696308A (en) * | 2009-10-27 | 2010-04-21 | 广东联塑科技实业有限公司 | Polyvinyl chloride composition and transparent pipe thereof |
| CN102731945A (en) * | 2012-06-18 | 2012-10-17 | 成都新兴富皇高分子材料科技有限公司 | Modified chlorinated polyvinyl chloride alloy material and preparation method thereof |
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