CN107057123A - A kind of calcium-zinc composite stabilizing agent and its preparation method and application - Google Patents

A kind of calcium-zinc composite stabilizing agent and its preparation method and application Download PDF

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CN107057123A
CN107057123A CN201710175101.6A CN201710175101A CN107057123A CN 107057123 A CN107057123 A CN 107057123A CN 201710175101 A CN201710175101 A CN 201710175101A CN 107057123 A CN107057123 A CN 107057123A
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calcium
zinc
stabilizing agent
fatty acid
composite stabilizing
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CN107057123B (en
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李支松
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Guangdong Liansu Technology Industrial Co Ltd
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K13/00Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
    • C08K13/02Organic and inorganic ingredients
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/18Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24Acids; Salts thereof
    • C08K3/26Carbonates; Bicarbonates
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/34Silicon-containing compounds
    • C08K3/36Silica
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00Use of organic ingredients
    • C08K5/04Oxygen-containing compounds
    • C08K5/05Alcohols; Metal alcoholates
    • C08K5/053Polyhydroxylic alcohols
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00Use of organic ingredients
    • C08K5/04Oxygen-containing compounds
    • C08K5/07Aldehydes; Ketones
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00Use of organic ingredients
    • C08K5/04Oxygen-containing compounds
    • C08K5/09Carboxylic acids; Metal salts thereof; Anhydrides thereof
    • C08K5/098Metal salts of carboxylic acids
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00Use of organic ingredients
    • C08K5/04Oxygen-containing compounds
    • C08K5/10Esters; Ether-esters
    • C08K5/101Esters; Ether-esters of monocarboxylic acids
    • C08K5/103Esters; Ether-esters of monocarboxylic acids with polyalcohols
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00Use of organic ingredients
    • C08K5/04Oxygen-containing compounds
    • C08K5/13Phenols; Phenolates
    • C08K5/134Phenols containing ester groups
    • C08K5/1345Carboxylic esters of phenolcarboxylic acids
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00Use of organic ingredients
    • C08K5/04Oxygen-containing compounds
    • C08K5/15Heterocyclic compounds having oxygen in the ring
    • C08K5/151Heterocyclic compounds having oxygen in the ring having one oxygen atom in the ring
    • C08K5/1515Three-membered rings
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00Use of organic ingredients
    • C08K5/49Phosphorus-containing compounds
    • C08K5/51Phosphorus bound to oxygen
    • C08K5/52Phosphorus bound to oxygen only
    • C08K5/524Esters of phosphorous acids, e.g. of H3PO3
    • C08K5/526Esters of phosphorous acids, e.g. of H3PO3 with hydroxyaryl compounds
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    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00Properties
    • C08L2201/08Stabilised against heat, light or radiation or oxydation
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    • C08L2203/00Applications
    • C08L2203/18Applications used for pipes

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Abstract

The present invention relates to a kind of calcium-zinc composite stabilizing agent and its preparation method and application, the calcium-zinc composite stabilizing agent is composed of the following components by mass fraction:Fatty acid calcium salt 10~40%;Fatty acid zinc salt 5~20%;Hydrotalcite 10~45%;Beta diketone 5~12%;Polyalcohol 2~8%;Epoxide 1~5%;Antioxidant 1~5%;Lubricant 5~15%;Silica 2~5%;Wherein, the silica is vapor phase method hydrophilic silica, and its specific surface area is 100~335m2/g.The calcium-zinc composite stabilizing agent that the present invention is provided has the advantages that long-term uninterrupted production does not coagulate frost, mold runner non-scaling without pressure analysis, calibration sleeve under high production speed, and also has higher heat endurance and good processing characteristics.

Description

A kind of calcium-zinc composite stabilizing agent and its preparation method and application
Technical field
The present invention relates to chemical stabilizer technical field, and in particular to a kind of calcium-zinc composite stabilizing agent and preparation method thereof and Using.
Background technology
The advantages of polyvinyl chloride is because of its good chemical stability, fire retardant self-extinguishment, high-insulativity is widely used in The fields such as electrical insulating material, water supply and sewerage pipeline, door-window section bar, are one of current most popular general-purpose plastics.
The heat endurance of polyvinyl chloride is to influence a key factor of polrvinyl chloride product quality, therefore would generally be PVC stabilizer is added in the process of polyvinyl chloride to improve its stability, so as to meet production process and actually make Use demand.PVC stabilizer mainly has lead salts, organic tin, metal soap and terres rares etc., and wherein lead salt is a huge sum of money Belong to compound, be poisonous and harmful substance, be gradually backed out market;The effect of organic tin stabilizer is most preferable, and transparency is high, Available for transparent article, but price is higher, and has some kinds to be also poisonous;Then heat endurance is not good for common metal soaps, Part kind pressure analysis is serious, it is impossible to be used alone;Terres rares is the new stabilizer of a class, and effect preferably, but is provided by rare earth Source shortage influence, its price is constantly raising up.
With the enhancing of people's environmental consciousness, the huge sum of money such as lead, tin, cadmium, barium is substituted with light metal compounds such as calcium, zinc, magnesium The PVC stabilizer of category is of concern.It is steady to Ca Zn composite that current research institution both at home and abroad all starts input ample resources Determine agent expansion research, calcium-zinc composite stabilizing agent is widely used in polyvinyl chloride processing industry, and polychloroethylene pipes are also being used Calcium-zinc composite stabilizing agent.But, presently commercially available polychloroethylene pipes calcium-zinc composite stabilizing agent when producing small specification tube, if The appearance color of tubing, dimensional stability, physical property is set to meet production requirement and products standards, its speed of production It is then relatively low(≤10M/min).If further improving speed of production, speed of production, the product quality of early stage tubing are substantially unchanged, After uninterrupted production 12~16 days, occur moment of torsion substantially increase, the solidifying frost of calibration sleeve, mold runner scale formation, tubing outward appearance Quality and physical property are also decreased obviously.By to extruder, mould, raw material, Recipe and mold runner Scale forming matter carries out constituent analysis, is contrasted by changing the long-term batch experiment of different classes of stabilizer, finally assert it is that calcium zinc is answered Stabilizer is closed to occur to press analysis caused when high speed extrusion is produced.
Therefore, it is necessary to which developing a kind of calcium-zinc composite stabilizing agent with good combination property is used for the height of polychloroethylene pipes It is fast to extrude for a long time, to meet needs of production.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of calcium-zinc composite stabilizing agent, the present invention is provided Calcium-zinc composite stabilizing agent there is long-term uninterrupted production not coagulate frost, mould stream without pressure analysis, calibration sleeve under high production speed The advantage of road non-scaling, and also there is higher heat endurance and good processing characteristics.
Another object of the present invention is to provide the preparation method of above-mentioned calcium-zinc composite stabilizing agent.
Another object of the present invention is to provide above-mentioned calcium-zinc composite stabilizing agent as heat stabilizer in polychloroethylene pipes In application.
To achieve the above object, the present invention is adopted the following technical scheme that:
A kind of calcium-zinc composite stabilizing agent, the calcium-zinc composite stabilizing agent is composed of the following components by mass fraction:
Fatty acid calcium salt 10~40%;
Fatty acid zinc salt 5~20%;
Hydrotalcite 10~45%;
Beta-diketon 5~12%;
Polyalcohol 2~8%;
Epoxide 1~5%;
Antioxidant 1~5%;
Lubricant 5~15%;
Silica 2~5%;
Wherein, the silica is vapor phase method hydrophilic silica, and its specific surface area is 100~335m2/g。
The present invention is from the aerosil of specific specific surface area, its adsorbable and polyvinyl chloride poor compatibility formula Component, such as polyalcohol and beta-diketon, are finally sticked on process equipment with reducing these components;Aerosil also has simultaneously Reduce the effect of friction, so as to enhance polyvinyl chloride and the lubrication before processing mold.In the present invention, silica Specific surface area it is larger to the performance impact of calcium zinc stabilizer.The specific surface area of silica is too small, can cause its adsorption capacity Decline, resistance to compression analysis DeGrain;And the equal very little of average grain diameter of the excessive then silica of specific surface area, such as specific surface area 380m2/ g or so aerosil, its maximum particle diameter is also with regard to 2.5 μm, and calcium zinc stabilizer is differed with the particle diameter of other components More than 20 times, silica, because particle diameter is small and itself is fluffy, most of can accumulate in compounding jar it during batch mixing in the case Its component top, together with being uniformly dispersed in other components, causes final finished product calcium-zinc composite stabilizing agent component It is irregular so as to influenceing its performance.
The present invention also analyses the consumption of component such as fatty acid calcium salt, polyalcohol etc. by the other easy pressures adjusted in formula, leads to The compatibility effect crossed between each component provides a kind of calcium-zinc composite stabilizing agent, and the calcium-zinc composite stabilizing agent is applied into polyvinyl chloride In after can uninterruptedly high-speed production more than more than 100 days, therebetween moment of torsion without it is obvious rise, produce without pressure analysis, calibration sleeve do not coagulate frost, Mold runner non-scaling, pipe workpiece quality is without reduction.The calcium-zinc composite stabilizing agent that the present invention is provided is particularly suitable for use in small-bore(≤ DN50)Polychloroethylene pipes high speed(≥10M/min)Uninterrupted extrusion.
Preferably, the calcium-zinc composite stabilizing agent is composed of the following components by mass fraction:
Fatty acid calcium salt 15~35%;
Fatty acid zinc salt 12~20%;
Hydrotalcite 25~40%;
Beta-diketon 8~10%;
Polyalcohol 4~5%;
Epoxide 1~4%;
Antioxidant 1~4%;
Lubricant 8~12%;
Silica 2~4%;
Wherein, the silica is vapor phase method hydrophilic silica, and its specific surface area is 110~200m2/g。
Preferably, the calcium-zinc composite stabilizing agent is composed of the following components by mass fraction:
Fatty acid calcium salt 16%;
Fatty acid zinc salt 12%;
Hydrotalcite 40%;
Beta-diketon 10%;
Polyalcohol 4%;
Epoxide 2.5%;
Antioxidant 2.5%;
Lubricant 10%;
Silica 3%;
Wherein, the silica is vapor phase method hydrophilic silica, and its specific surface area is 126~175m2/g。
Preferably, the fatty acid calcium salt is calcium stearate, calcium palmitate, calcium oleate, calcium laurate, ten seven-carbon fatty acids One or more in calcium or 15 carbon fatty acid calcium.
Preferably, the fatty acid zinc salt is zinc stearate, zinc palmitate, zinc oleate, zinc laurate, ten seven-carbon fatty acids One or more in zinc or 15 carbon fatty acid zinc.
Preferably, the hydrotalcite is the binary magnesium-aluminum hydrotalcite and zinc magnesium aluminium ternary hydrotalcite that arbitrary proportion is mixed.Institute State MgO/AL in binary magnesium-aluminum hydrotalcite2O3Mol ratio be (4-4.5):1;ZnO/MgO/ in the zinc magnesium aluminium ternary hydrotalcite AL2O3Mol ratio be 1:(0.5-2):(0.5-1).
Preferably, the beta-diketon is dibenzoyl methane, stearoyl benzoyl methane, acetylacetone,2,4-pentanedione, dehydroactic acid, two One or more in benzoyl methane calcium.
Preferably, the polyalcohol is pentaerythrite, bipentaerythrite, sorbierite, trihydroxyethyl isocyanuric ester(Match Gram), trimethylolpropane the mixtures that mix in any proportion of one or more.
Preferably, the epoxide is epoxidized soybean oil, octyl epoxy stearate, one kind of butyl epoxy stearate Or more than one mixtures for mixing in any proportion.
Preferably, the antioxidant is 1076(β-(3,5- di-tert-butyl-hydroxy phenyls)The positive octadecanol ester of propionic acid)、 138(Three [ 2.4- di-tert-butyl-phenyls ] phosphite esters)、1010(Four [β-(3,5- di-tert-butyl-hydroxy phenyls)Propionic ester] Pentaerythritol ester)In the mixtures that mix in any proportion of one or more.
Preferably, the lubricant is glycerin monostearate, husky rope wax, Tissuemat E, OPE, lignite The mixture that wax, the one or more of OP waxes are mixed in any proportion.
The preparation method of above-mentioned calcium-zinc composite stabilizing agent, the preparation method is:
Start low-speed mode, successively by hydrotalcite, fatty acid zinc salt, fatty acid calcium salt, beta-diketon, polyalcohol, antioxidant, dioxy SiClx, epoxide and lubricant are added in compounding jar and mixed;Then change to fast mode, going out cylinder after lasting mixing produces The calcium-zinc composite stabilizing agent.
Preferably, the rotating speed of the low-speed mode is 200~300r/min, and fast mode is 1000~1200r/min;It is high Persistently mixed under fast mode 60~240 seconds.
It is further preferable that the rotating speed of the low-speed mode is 250r/min, fast mode is 1100r/min;Fast mode Persistently mix 180 seconds down.
Above-mentioned calcium-zinc composite stabilizing agent is as application of the heat stabilizer in polychloroethylene pipes also in the protection of the present invention Within the scope of.
Compared with prior art, the present invention has the advantages that:
The calcium-zinc composite stabilizing agent that the present invention is provided has long-term uninterrupted production without pressure analysis, calibration sleeve under high production speed Frost, the advantage of mold runner non-scaling are not coagulated, and also there is higher heat endurance and good processing characteristics.The present invention The calcium-zinc composite stabilizing agent of offer be particularly suitable for use in small-bore (≤DN50) polychloroethylene pipes high speed (>=10M/min) Uninterrupted extrusion.
Embodiment
With reference to embodiment, the present invention will be further described.These embodiments are only that the typical case of the present invention is retouched State, but the invention is not restricted to this.Test method used unless otherwise specified, is conventional method, made in following embodiments Raw material, reagent etc., unless otherwise specified, being can be from the raw material and reagent that routinely the commercial sources such as purchased in market are obtained.
Embodiment 1~5 and the calcium-zinc composite stabilizing agent of comparative example 1~4
The formula for the calcium-zinc composite stabilizing agent that the embodiment 1~5 of table 1 and comparative example 1~4 are provided
The preparation method for the calcium-zinc composite stabilizing agent that embodiment 1~5 and comparative example 1~4 are provided is as follows:
Start low-speed mode, successively by hydrotalcite, fatty acid zinc salt, fatty acid calcium salt, beta-diketon, polyalcohol, antioxidant, dioxy SiClx, epoxide and lubricant are added in compounding jar and mixed;Then change to fast mode, going out cylinder after lasting mixing produces The calcium-zinc composite stabilizing agent.
Wherein, the rotating speed of the low-speed mode is 250r/min, and fast mode is 1100r/min;Continue under fast mode Mixing 180 seconds.
The preparation of application test example 1~5 and the polychloroethylene pipes of comparative experimental example 1~5
The formula for the polychloroethylene pipes that the application test example 1~5 of table 2 and comparative experimental example 1~5 are provided
Mixing cylinder at a high speed is added after each component of test example 1~5 is weighed respectively, material temperature arrising caused by friction is to 115 after startup ~120 DEG C, discharge is to the cold mixed cylinder of low speed, and discharge bores double extruder hoppers to 80 when material is cooled to 45~50 DEG C.It is appropriate again Adjust the setting of each spot temperature, screw rod and the speed setting for drawing cutter device of extruder and four cavity moulds, it is ensured that shaping Partially yellow, inside and outside wall is not bright and clean for electrical casing pipe appearance color, size is accurate, and single line linear velocity is more than 13M/min.Finished product electrical casing pipe By JG 3050-1998《Insulating electrical casing pipe and accessory for building》Detection, whole projects are qualified.
Produced always the 100th day with this formula is uninterrupted, during which production without pressure analysis/moment of torsion gently without rising, in tubing Outer wall is bright and clean, no convex-concave striped, and the whole projects of tubing physical property detection are qualified.Mould is taken in shutdown apart, finds runner without knot Dirt, calibration sleeve is without solidifying frost.By this formula in workshop batch production, existing one-year age up to now, form removal is fixed still without incrustation Footpath is cased with slight solidifying frost.And production period speed of production, pipe workpiece quality are without reduction, basically reach and lead salt stabilizer one The level of cause.In addition, the calcium-zinc composite stabilizing agent that various embodiments of the present invention are provided also has higher heat endurance and good Processing characteristics.The calcium-zinc composite stabilizing agent that the present invention is provided is particularly suitable for use in the polychloroethylene pipes of small-bore (≤DN50) The uninterrupted extrusion of (>=10M/min) at a high speed.
By contrast, using same equipment and technique, the tubing of same specification is produced, continuous production only one week or so is fixed Footpath set begins with solidifying white phenomenon appearance and mould incrustation is serious.And with the extension of continuous production time, all the more seriously, Single line speed shuts down form removal inspection in trend is decreased obviously after 30 days, mould incrustation is serious, can not be after start production, can only Row tissue is produced again after to be repaired.

Claims (10)

1. a kind of calcium-zinc composite stabilizing agent, it is characterised in that the calcium-zinc composite stabilizing agent is by mass fraction by following components group Into:
Fatty acid calcium salt 10~40%;
Fatty acid zinc salt 5~20%;
Hydrotalcite 10~45%;
Beta-diketon 5~12%;
Polyalcohol 2~8%;
Epoxide 1~5%;
Antioxidant 1~5%;
Lubricant 5~15%;
Silica 2~5%;
Wherein, the silica is vapor phase method hydrophilic silica, and its specific surface area is 100~335m2/g。
2. calcium-zinc composite stabilizing agent according to claim 1, it is characterised in that the calcium-zinc composite stabilizing agent presses mass fraction It is composed of the following components:
Fatty acid calcium salt 15~35%;
Fatty acid zinc salt 12~20%;
Hydrotalcite 25~40%;
Beta-diketon 8~10%;
Polyalcohol 4~5%;
Epoxide 1~4%;
Antioxidant 1~4%;
Lubricant 8~12%;
Silica 2~4%;
Wherein, the silica is vapor phase method hydrophilic silica, and its specific surface area is 110~200m2/g。
3. calcium-zinc composite stabilizing agent according to claim 2, it is characterised in that the calcium-zinc composite stabilizing agent presses mass fraction It is composed of the following components:
Fatty acid calcium salt 16%;
Fatty acid zinc salt 12%;
Hydrotalcite 40%;
Beta-diketon 10%;
Polyalcohol 4%;
Epoxide 2.5%;
Antioxidant 2.5%;
Lubricant 10%;
Silica 3%;
Wherein, the silica is vapor phase method hydrophilic silica, and its specific surface area is 126~175m2/g。
4. calcium-zinc composite stabilizing agent according to claims 1 to 3, it is characterised in that the fatty acid calcium salt be calcium stearate, One or more in calcium palmitate, calcium oleate, calcium laurate, ten seven-carbon fatty acid calcium or 15 carbon fatty acid calcium.
5. calcium-zinc composite stabilizing agent according to claims 1 to 3, it is characterised in that the fatty acid zinc salt be zinc stearate, One or more in zinc palmitate, zinc oleate, zinc laurate, ten seven-carbon fatty acid zinc or 15 carbon fatty acid zinc.
6. calcium-zinc composite stabilizing agent according to claims 1 to 3, it is characterised in that the hydrotalcite mixes for arbitrary proportion Binary magnesium-aluminum hydrotalcite and zinc magnesium aluminium ternary hydrotalcite.
7. calcium-zinc composite stabilizing agent according to claims 1 to 3, it is characterised in that the beta-diketon be dibenzoyl methane, One or more in stearoyl benzoyl methane, acetylacetone,2,4-pentanedione, dehydroactic acid, dibenzoyl methane calcium.
8. the preparation method of any calcium-zinc composite stabilizing agent of claim 1~7, it is characterised in that the Ca Zn composite is steady The preparation method for determining the preparation method of agent is as follows:
Start low-speed mode, successively by hydrotalcite, fatty acid zinc salt, fatty acid calcium salt, beta-diketon, polyalcohol, antioxidant, dioxy SiClx, epoxide and lubricant are added in compounding jar and mixed;Then change to fast mode, going out cylinder after lasting mixing produces The calcium-zinc composite stabilizing agent.
9. preparation method according to claim 8, it is characterised in that the rotating speed of the low-speed mode is 200~300 r/ Min, fast mode is 1000~1200r/min;Persistently mixed under fast mode 60~240 seconds.
10. application of any calcium-zinc composite stabilizing agent of claim 1~7 as heat stabilizer in polychloroethylene pipes.
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CN108752638A (en) * 2018-05-04 2018-11-06 沈阳浩博实业有限公司 A kind of Efficient powder heat stabilizer and preparation method thereof and the application in super transparent PVC product
CN109054405A (en) * 2018-06-08 2018-12-21 江苏嘉仁禾科技有限公司 A kind of dedicated calcium zinc stabilizer of fruit freshness preserving film and preparation method thereof
CN109181155A (en) * 2018-08-22 2019-01-11 西安高科建材科技有限公司 A kind of leadless sectional materials of organotin calcium zinc stabilising system
CN109227993A (en) * 2018-07-17 2019-01-18 广东工业大学 A method of PVC STABILIZERS/LUBRICANTS pressure analysis adherency in cleaning torque rheometer mixer
CN109575481A (en) * 2018-12-19 2019-04-05 嘉兴若天新材料科技有限公司 A kind of PVC floor wearing layer Environment-friendlyheat heat stabilizer
CN110204785A (en) * 2019-06-24 2019-09-06 东莞市尚诺新材料有限公司 A kind of floor film stabilizer and preparation method thereof
CN110330741A (en) * 2019-07-25 2019-10-15 东莞市柯益信息技术有限公司 A kind of environmental protection high transparency leaded light PVC is stabilizing agent specially used and preparation method thereof

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