CN106967247A - A kind of screw cleaning agent and preparation method thereof - Google Patents

A kind of screw cleaning agent and preparation method thereof Download PDF

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Publication number
CN106967247A
CN106967247A CN201710314343.9A CN201710314343A CN106967247A CN 106967247 A CN106967247 A CN 106967247A CN 201710314343 A CN201710314343 A CN 201710314343A CN 106967247 A CN106967247 A CN 106967247A
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Prior art keywords
agent
cleaning agent
screw
rubbing
added
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CN106967247B (en
Inventor
段秀红
吴仲涛
陈庆华
杨松伟
杨裕金
郝海斌
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Shanxi Energy-Saving Materials Ltd By Share Ltd
Fujian Normal University
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Shanxi Energy-Saving Materials Ltd By Share Ltd
Fujian Normal University
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    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/06—Polyethene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
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    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
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    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
    • C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
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    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
    • C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
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    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/08—Copolymers of ethene
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    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/10—Homopolymers or copolymers of propene
    • C08L23/12—Polypropene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/9258—Velocity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
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    • B29C2948/92704—Temperature
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    • C08J2203/02—CO2-releasing, e.g. NaHCO3 and citric acid
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    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
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    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
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    • C08J2405/00—Characterised by the use of polysaccharides or of their derivatives not provided for in groups C08J2401/00 or C08J2403/00
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    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
    • C08K3/24—Acids; Salts thereof
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Abstract

The present invention discloses a kind of screw cleaning agent and preparation method thereof, is made by following methods：(1) fine particle calcium carbonate is coated on coarse whiting surface and prepares compound calcium carbonate microparticle；(2) modifying agent is prepared；(3) compound calcium carbonate microparticle is modified with modifying agent, rubbing agent is made.(4) rubbing agent and polyolefin-based substrates, surfactant, lubricant, antioxidant, foaming agent, blowing promotor are subjected to extruding pelletization, screw cleaning agent is made.The rubbing agent that the present invention is obtained, coefficient of friction is moderate, and surface coated modifying agent is conducive to particulate to be more preferably scattered in cleaning agent base material.The booster action of other auxiliary agents in being formulated in conjunction with screw cleaning agent, obtained screw cleaning agent can effectively remove heels and carbon distribution in screw rod, wear equipment too much is avoided that again.Both the heels and carbon distribution in screw rod had been assisted in removing, wear equipment too much is avoided that again.

Description

A kind of screw cleaning agent and preparation method thereof
Technical field
The present invention relates to field of high polymer material processing, the preparation side of specifically a kind of screw cleaning agent and preparation method thereof Method.
Background technology
In field of plastics processing, extrusion molding, injection molding and blow molding are that several most common screw rod processing are set It is standby.During processing, resin can be detained in screw rod, can be constantly occurring degraded in the presence of heat with oxygen, most Carbonization is deposited on machine barrel and screw rod eventually.In addition, when changing resin variety or product color, can also be remained in equipment Raw material.In order to ensure the quality of product, it usually needs process equipment is cleaned and these residues are removed.
At present, screw cleaning agent all has some limitations in terms of cleaning efficiency, environmental protection, cost, such as environmentally friendly The cleaning agent of type, universal cleaning efficiency is relatively low；Organic solvent type screw cleaning agent, although improve cleaning efficiency and but there is environment The problem of pollution；And because material category is various, the same formula of chemical cleaning method often can only be effective to a few class materials, General applicability is not strong.The screw cleaning agent environmental pollution of physical friction type is small, and cleaning performance is good, but in cleaning process Rubbing agent also accordingly accelerates mechanical surface abrasion.Thus if suitable rubbing agent, physical cleaning method is to Chemical cleaning Method one is supplemented well.
At present, the most frequently used rubbing agent is calcium carbonate, and it is the green additive that a class has anti-wear and wear-resistant performance concurrently, is one Plant effective and lower-cost rubbing agent.But there is many deficiencies, directly using often undesirable.Because the shape of rubbing agent Shape, crystal structure, size factor can all be impacted to frictional behaviour.Particle in irregular shape has compared with the particle of regular shape Larger friction valve, granularity is generally more suitable in 2 ~ 15um.And powdered whiting (GCC), particle surface corner angle are clearly demarcated, abrasion Value is higher, larger to equipment attrition.It is therefore necessary to be modified it, strengthen its self lubricity to reduce external friction power.
The method that the present invention is deposited by surface, by precipitated calcium carbonate (PCC) particle（Based on spheroid shape）It is deposited in heavy Calcium carbonate (GCC) surface, is obtained wherein optimal GCC is crushed with calcite.Realize to GCC Surface coatings, greatly increase GCC tables The roughness and specific surface area in face, are passivated acute angle, and coefficient of friction is moderate.Coated again through compound modifier, in compound calcium carbonate Microparticle surfaces form one layer of lubricating layer, improve its dispersive property in cleaning agent.With reference to the booster action of various auxiliary agents, have Help plastics or the carbon distribution softening remained in screw rod, the solvability of cleaning agent can be improved.Thus the product of the present invention can The heels and carbon distribution in screw rod are effectively removed, wear equipment too much is avoided that again.
The content of the invention
In view of the shortcomings of the prior art, it is an object of the invention to provide a kind of system of screw cleaning agent and preparation method thereof Preparation Method.In order to realize the present invention, adopt the following technical scheme that：
A kind of screw cleaning agent, it is characterised in that be formulated by weight percentage as follows：
Polyolefin-based substrates 30 ~ 70
Rubbing agent 20 ~ 60
Surfactant 2 ~ 10
Lubricant 1 ~ 7
Antioxidant 0.5 ~ 2
Foaming agent 1 ~ 10
Blowing promotor 0.5 ~ 5.
The rubbing agent is modified calcium carbonate, and it is that fine particle calcium carbonate is coated on into coarse whiting surface, then with modifying agent to its surface It is modified, preparation process is as follows：
(1) chemical additives, pH adjusting agent, Ca are added by proportioning in a kettle.2+Solution and coarse whiting (GCC), start stirring Device, 600 ~ 1200rpm of rotating speed, control temperature is passed through CO at 20 ~ 60 DEG C2, as reacting slurry pH=7.5 ~ 8.0, it is passed through CO2Stream Amount halves, until reacting slurry pH=6.5 ~ 7.0 when, stop ventilation, terminate reaction, obtain coating GCC slurries, through sheet frame pressure Filter, filter cake are dried, pulverized and sieved, and obtain compound calcium carbonate microparticle, standby；
(2) ethylene bis stearamide (EBS) is added in a kettle., is warming up to 150 ~ 160 DEG C of meltings, is then added poly- second two Alcohol, stirring 2 ~ 6min after reactor is cooled to 60 ~ 70 DEG C, add stearic acid, finally by methyl vinyl silicon oil, tween, Ethyl acetate is disposably added in reactor, and stirs 6 ~ 12min, produces modifying agent；
(3) modifying agent that the compound calcium carbonate microparticle for preparing step (1) by proportioning is prepared with step (2) is added to high mixer In, rotating speed 600 ~ 2000rpm, 10 ~ 60min obtain modified rubbing agent；
At least a kind of water-soluble plant selected from tea polysaccharide, soybean polyoses or Polysaccharides in Bamboo Leaves of step (1) crystal control agent Many carbohydrates and their derivatives, addition is the 1 ~ 2% of coarse whiting (GCC) quality；
Step (1) the pH adjusting agent concentration be 20wt% ammoniacal liquor, its addition for step (1) reacting slurry cumulative volume 1 ~ 2%；
Step (1) coarse whiting (GCC) particle diameter is 2 ~ 40 μm；
The Ca2+Solution is that the one or two kinds of in calcium chloride, calcium nitrate is dissolved in into water to be configured to Ca2+Concentration be 0.05 ~ 0.50mol/L solution；
The m (GCC):m(CaX2) =(2~10):1, wherein X=Cl or NO3；
Step (1) CO2Flow is 1.0 ~ 5.0L/ min；
Step (2) modifier components are in mass ratio：Stearic acid 60 ~ 75, ethylene bis stearamide (EBS) 5 ~ 9, methyl second Alkenyl silicone oil 4 ~ 10, tween 4 ~ 7, polyethylene glycol 10 ~ 15, ethyl acetate 0.5 ~ 2, modifying agent addition are the compound of step (1) 0.5 ~ 3wt% of type calcium carbonate microparticle.
The polyolefin-based substrates are the material of polyethylene kind or the material of PP type.
The surfactant is sorbitan fatty acid ester (sapn), laurel alcohol ether phosphate, butyl In one or more.
The lubricant is the one or more in OPE, stearic acid, magnesium stearate, white oil.
The antioxidant is three [2.4- di-tert-butyl-phenyls] phosphite esters (168), four [β-(3,5- di-t-butyl -4- hydroxyls Base phenyl) propionic acid] pentaerythritol ester (1010), the one or more in bipentaerythrite diphosphites (626).
The foaming agent is the one or more in sodium acid carbonate, azodicarbonamide (AC), isocyanates；The foaming Auxiliary agent is the one or more in zinc stearate, calcium stearate, zinc oxide, barium monoxide.
The wearing valve of the screw cleaning agent rubbing agent is 12.0 ~ 21.0 mg.
A kind of preparation method of screw cleaning agent of the present invention, comprises the following steps：
(1) according to formula, vistanex, rubbing agent, surfactant, lubricant, antioxidant, foaming agent, foaming is weighed and is helped Agent, and add in high mixer, under the conditions of 80-120 DEG C, keep rotating speed 600-2000 rpm, high-speed stirred 5-30min；
(2) by step（1）The height of acquisition mixes uniform vistanex, rubbing agent, surfactant, lubricant, antioxidant, hair Infusion, blowing promotor are added in double screw extruder and are processed, and screw extruder parameter is：One 90-110 DEG C of area, 2nd area 100-130 DEG C, three 120-140 DEG C of areas, four 130-150 DEG C of areas, five 140-160 DEG C of areas, six 150-170 DEG C of areas, seven area 160-180 DEG C, 170-190 DEG C of 8th area, 170-210 DEG C of 9th area, 165-200 DEG C of head, rotating speed is 10-300rpm, as extruding pelletization, spiral shell Bar cleaning agent.
Specifically, the present invention is adopted the following technical scheme that：
A kind of screw cleaning agent, it is characterised in that be formulated by weight percentage as follows：
Polyolefin-based substrates 30 ~ 70
Rubbing agent 20 ~ 60
Surfactant 2 ~ 10
Lubricant 1 ~ 7
Antioxidant 0.5 ~ 2
Foaming agent 1 ~ 10
Blowing promotor 0.5 ~ 5.
The rubbing agent is modified calcium carbonate, and it is that fine particle calcium carbonate is coated on into coarse whiting surface, then with modifying agent to its surface It is modified, preparation process is as follows：
(1) chemical additives, pH adjusting agent, Ca are added by proportioning in a kettle.2+Solution and coarse whiting (GCC), start stirring Device, 600 ~ 1200rpm of rotating speed, control temperature is passed through CO at 20 ~ 60 DEG C2, as reacting slurry pH=7.5 ~ 8.0, it is passed through CO2Stream Amount halves, until reacting slurry pH=6.5 ~ 7.0 when, stop ventilation, terminate reaction, obtain coating GCC slurries, through sheet frame pressure Filter, filter cake are dried, pulverized and sieved, and obtain compound calcium carbonate microparticle, standby.
(2) ethylene bis stearamide (EBS) is added in a kettle., is warming up to 150 ~ 160 DEG C of meltings, is then added poly- second Glycol, stirring 2 ~ 6min after reactor is cooled to 60 ~ 70 DEG C, add stearic acid, finally by methyl vinyl silicon oil, tell Temperature, ethyl acetate are disposably added in reactor, and stir 6 ~ 12min, produce modifying agent.
(3) modifying agent that the compound calcium carbonate microparticle for preparing step (1) by proportioning is prepared with step (2) is added to high mixed In machine, rotating speed 600 ~ 2000rpm, 10 ~ 60min obtain modified rubbing agent.
At least a kind of water solubility selected from tea polysaccharide, soybean polyoses or Polysaccharides in Bamboo Leaves of step (1) crystal control agent Plant polyose and its derivative, addition are the 1 ~ 2% of coarse whiting (GCC) quality.
Step (1) the pH adjusting agent concentration is 20wt% ammoniacal liquor, and its addition is overall for the reacting slurry of step (1) Product 1 ~ 2%；Step (1) coarse whiting (GCC) particle diameter is 2 ~ 40 μm.
The Ca2+Solution is that the one or two kinds of in calcium chloride, calcium nitrate is dissolved in into water to be configured to Ca2+Concentration is 0.05 ~ 0.50mol/L solution.
The m (GCC):m(CaX2) =(2~10):1, X=Cl, NO3。
Step (1) CO2Flow is 1.0 ~ 5.0L/ min.
Step (2) modifier components are in mass ratio：Stearic acid 60 ~ 75, ethylene bis stearamide (EBS) 5 ~ 9, first Base vinyl silicone oil 4 ~ 10, tween 4 ~ 7, polyethylene glycol 10 ~ 15, ethyl acetate 0.5 ~ 2, modifying agent addition are step (1) 0.5 ~ 3wt% of compound calcium carbonate microparticle.
A kind of preparation method of screw cleaning agent, comprises the following steps：
(1) according to formula, vistanex, rubbing agent, surfactant, lubricant, antioxidant, foaming agent, foaming is weighed and is helped Agent, and add in high mixer, under the conditions of 80-120 DEG C, keep rotating speed 600-2000 rpm, high-speed stirred 5-30min.
(2) by step（1）The height of acquisition mixes uniform vistanex, rubbing agent, surfactant, lubricant, antioxygen Agent, foaming agent, blowing promotor are added in double screw extruder and are processed, and screw extruder parameter is：One 90-110 DEG C of area, Two 100-130 DEG C of areas, three 120-140 DEG C of areas, four 130-150 DEG C of areas, five 140-160 DEG C of areas, six 150-170 DEG C of areas, 7th area 160-180 DEG C, 170-190 DEG C of 8th area, 170-210 DEG C of 9th area, 165-200 DEG C of head, rotating speed is 10-300rpm, extruding pelletization, As screw cleaning agent.
The polyolefin-based substrates are the material of polyethylene kind or the material of PP type.
The surfactant is sorbitan fatty acid ester (sapn), laurel alcohol ether phosphate, butyl In one or more.
The lubricant is the one or more in OPE, stearic acid, magnesium stearate, white oil.
The antioxidant is three [2.4- di-tert-butyl-phenyls] phosphite esters (168), four [β-(3,5- di-t-butyl -4- hydroxyls Base phenyl) propionic acid] pentaerythritol ester (1010), the one or more in bipentaerythrite diphosphites (626).
The foaming agent is the one or more in sodium acid carbonate, azodicarbonamide (AC), isocyanates；The foaming Auxiliary agent is the one or more in zinc stearate, calcium stearate, zinc oxide, barium monoxide.
The wearing valve of the screw cleaning agent rubbing agent is 12.0 ~ 21.0 mg.
After adopting the above technical scheme, the present invention has following features and advantage：The screw cleaning agent is with polyolefine material For base material, the moderate rubbing agent of self-control coefficient of friction is added, a certain amount of surfactant, lubricant, antioxidant, foaming is compounded Agent, blowing promotor are formed.The moderate rubbing agent of the coefficient of friction that wherein contains, can with machine barrel produce strong friction so as to The adhesion on abdominal cavity surface and screw rod in machine barrel is cleaned, while wear equipment too much can also be avoided；Surfactant can Rapid osmotic is attached to the dead angle of screw cylinder, the buildup on gap or carbon distribution, is cleaned up, and improves screw rod cleaning The cleaning performance of agent；Lubricant is used to prevent screw cleaning agent from excessively remaining in screw cylinder, reduces secondary pollution；Antioxidant For reducing aging, failure of the screw cleaning agent during production with storage；The material of foaming agent in the cleaning agent in heating In cylinder, the foaming and intumescing due to heated increases the volume of cleaning agent, improves contact friction of the cleaning agent with barrel, also simultaneously The consumption of screw cleaning agent can be reduced.
Embodiment
Ca in following embodiments2+Solution uses calcium chloride or calcium nitrate solution.
Embodiment 1
150g Polysaccharides in Bamboo Leaves, 3L 20wt% ammoniacal liquor, 200L 0.1mol/L Ca are added in a kettle.2+Solution and 10kg Coarse whiting (GCC), starts agitator, and rotating speed 1000rpm, control temperature is passed through CO at 20 DEG C with 1.0L/min2, work as reacting slurry During pH=8.0, CO is passed through2Flow halves, as reacting slurry pH=7.0, stops ventilation, terminates reaction, obtains cladding GCC slurries Liquid, plate compression, filter cake drying, pulverizes and sieves, and obtains compound calcium carbonate microparticle, standby.
10g ethylene bis stearamides (EBS) are added in a kettle., 150 DEG C of meltings are warming up to, and then add the poly- second of 20g Glycol, stirring 3min after reactor is cooled to 70 DEG C, add 250g stearic acids, finally by 10mL methyl vinyl silicon oils, 9mL tweens, 1mL ethyl acetate are disposably added in reactor, and stir 8min, are modifying agent.
2kg compound calcium carbonate microparticles obtained above and 40g modifying agent are added in high mixer by proportioning, rotating speed 1600rpm, the mixed 10min of height is rubbing agent.
According to formula：60 parts of high density polyethylene (HDPE)s, 30 parts of rubbing agents, 4 parts of sorbitan fatty acid esters (sapn), 2 parts OPE, 1 part of three [2.4- di-tert-butyl-phenyls] phosphite ester (168), 2 parts of azodicarbonamides (AC), 1 part of tristearin Sour zinc, nominal takes 5kg, and adds in high mixer, under the conditions of 100 DEG C, keeps rotating speed 2000rpm, high-speed stirred 15min.
The mixed uniform various raw materials of height are added in screw extruder and are processed, screw extruder parameter is：One area 100 DEG C, two 110 DEG C of areas, three 130 DEG C of areas, four 145 DEG C of areas, five 160 DEG C of areas, six 170 DEG C of areas, seven 180 DEG C of areas, 190 DEG C of 8th area, Nine 190 DEG C of areas, 185 DEG C of head, rotating speed is 150rpm, as extruding pelletization, screw cleaning agent.
Embodiment 2
150g tea polysaccharides, 3L 20wt% ammoniacal liquor, 200L 0.3mol/L Ca are added in a kettle.2+Solution and 10kg weights Calcium (GCC), starts agitator, and rotating speed 1200rpm, control temperature is passed through CO at 50 DEG C with 4.0L/min2, as reacting slurry pH When=8.0, CO is passed through2Flow halves, as reacting slurry pH=7.0, stops ventilation, terminates reaction, obtains cladding GCC slurries Liquid, plate compression, filter cake drying, pulverizes and sieves, and obtains compound calcium carbonate microparticle, standby.
10g ethylene bis stearamides (EBS) are added in a kettle., 150 DEG C of meltings are warming up to, and then add the poly- second of 20g Glycol, stirring 2min after reactor is cooled to 70 DEG C, add 250g stearic acids, finally by 10mL methyl vinyl silicon oils, 9mL tweens, 1mL ethyl acetate are disposably added in reactor, and stir 6min, are modifying agent.
2kg compound calcium carbonate microparticles obtained above and 20g modifying agent are added in high mixer by proportioning, rotating speed 1100rpm, the mixed 20min of height is rubbing agent.
According to formula：40 parts of LLDPEs, 44 parts of rubbing agents, 6 parts of butyls, 3 parts of stearic acids, 1.5 part of four [β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol ester (1010), 4 parts of sodium acid carbonates, 1.5 parts of oxygen Change zinc, nominal takes 5kg, and adds in high mixer, under the conditions of 110 DEG C, keep rotating speed 1500rpm, high-speed stirred 20min.
The mixed uniform various raw materials of height are added in screw extruder and are processed, screw extruder parameter is：One area 105 DEG C, two 120 DEG C of areas, three 130 DEG C of areas, four 140 DEG C of areas, five 150 DEG C of areas, six 165 DEG C of areas, seven 175 DEG C of areas, 180 DEG C of 8th area, Nine 180 DEG C of areas, 175 DEG C of head, rotating speed is 120rpm, as extruding pelletization, screw cleaning agent.
Embodiment 3
200g Polysaccharides in Bamboo Leaves, 3L 20wt% ammoniacal liquor, 200L 0.25mol/L Ca are added in a kettle.2+Solution and 10kg Coarse whiting (GCC), starts agitator, and rotating speed 1000rpm, control temperature is passed through CO at 25 DEG C with 2.0L/min2, work as reacting slurry During pH=8.0, CO is passed through2Flow halves, as reacting slurry pH=6.5, stops ventilation, terminates reaction, obtains cladding GCC slurries Liquid, plate compression, filter cake drying, pulverizes and sieves, and obtains compound calcium carbonate microparticle, standby.
10g ethylene bis stearamides (EBS) are added in a kettle., 150 DEG C of meltings are warming up to, and then add the poly- second of 20g Glycol, stirring 4min after reactor is cooled to 70 DEG C, add 130g stearic acids, finally by 10mL methyl vinyl silicon oils, 9mL tweens, 1mL ethyl acetate are disposably added in reactor, and stir 7min, are modifying agent.
2kg compound calcium carbonate microparticles obtained above and 50g modifying agent are added in high mixer by proportioning, rotating speed 1600rpm, the mixed 10min of height is rubbing agent.
According to formula：38 parts of low density polyethylene (LDPE)s, 45 parts of rubbing agents, 6 parts of sorbitan fatty acid esters (sapn), 5 parts Magnesium stearate, 0.8 part of three [2.4- di-tert-butyl-phenyls] phosphite ester (168), 4 parts of sodium acid carbonates, 1.2 parts of barium monoxide, nominal 5kg is taken, and is added in high mixer, under the conditions of 100 DEG C, rotating speed 2000rpm, high-speed stirred 20min is kept.
The mixed uniform various raw materials of height are added in screw extruder and are processed, screw extruder parameter is：One area 100 DEG C, two 120 DEG C of areas, three 130 DEG C of areas, four 140 DEG C of areas, five 150 DEG C of areas, six 165 DEG C of areas, seven 175 DEG C of areas, 180 DEG C of 8th area, Nine 180 DEG C of areas, 175 DEG C of head, rotating speed is 130rpm, as extruding pelletization, screw cleaning agent；
Embodiment 4
150g tea polysaccharides, 3L 20wt% ammoniacal liquor, 200L 0.1mol/L Ca are added in a kettle.2+Solution and 10kg weights Calcium (GCC), starts agitator, and rotating speed 1000rpm, control temperature is passed through CO at 20 DEG C with 1.0L/min2, as reacting slurry pH When=8.0, CO is passed through2Flow halves, as reacting slurry pH=7.0, stops ventilation, terminates reaction, obtains cladding GCC slurries Liquid, plate compression, filter cake drying, pulverizes and sieves, and obtains compound calcium carbonate microparticle, standby.
18g ethylene bis stearamides (EBS) are added in a kettle., 150 DEG C of meltings are warming up to, and then add the poly- second of 30g Glycol, stirring 4min after reactor is cooled to 65 DEG C, add 130g stearic acids, finally by 14mL methyl vinyl silicon oils, 6.8mL tweens, 1.2mL ethyl acetate are disposably added in reactor, and stir 8min, are modifying agent.
2kg compound calcium carbonate microparticles obtained above and 30g modifying agent are added in high mixer by proportioning, rotating speed 1600rpm, the mixed 15min of height is rubbing agent.
According to formula：36 parts of polypropylene, 50 parts of rubbing agents, 4.5 parts of laurel alcohol ether phosphates, 2 parts of white oils, 1.2 parts of double seasons Penta tetrol diphosphites (626), 4.5 parts of isocyanates, 1.8 parts of calcium stearates, nominal takes 5kg, and adds in high mixer, Under the conditions of 105 DEG C, rotating speed 1800rpm, high-speed stirred 15min are kept.
The mixed uniform various raw materials of height are added in screw extruder and are processed, screw extruder parameter is：One area 110 DEG C, two 125 DEG C of areas, three 145 DEG C of areas, four 165 DEG C of areas, five 180 DEG C of areas, six 190 DEG C of areas, seven 195 DEG C of areas, 200 DEG C of 8th area, Nine 200 DEG C of areas, 190 DEG C of head, rotating speed is 180rpm, as extruding pelletization, screw cleaning agent；
Comparison example 1
150g Polysaccharides in Bamboo Leaves, 3L 20wt% ammoniacal liquor, 200L 0.1mol/L Ca in a kettle.2+Solution, starts stirring Device, rotating speed 1000rpm, control temperature is passed through CO at 20 DEG C with 1.0L/min2, as reacting slurry pH=8.0, it is passed through CO2Stream Amount halves, as reacting slurry pH=7.0, stops ventilation, terminates reaction, obtains calcium carbonate serosity, and plate compression, filter cake dry It is dry, pulverize and sieve obtained fine particle calcium carbonate powder.
18g ethylene bis stearamides (EBS) are added in a kettle., 150 DEG C of meltings are warming up to, and then add the poly- second of 30g Glycol, stirring 4min after reactor is cooled to 65 DEG C, add 130g stearic acids, finally by 14mL methyl vinyl silicon oils, 6.8mL tweens, 1.2mL ethyl acetate are disposably added in reactor, and stir 8min, are modifying agent.
2kg fine particle calcium carbonate powder obtained above and 30g modifying agent are added in high mixer by proportioning, rotating speed 1600rpm, height is mixed 15min is rubbing agent.
According to formula：36 parts of polypropylene, 50 parts of rubbing agents, 4.5 parts of laurel alcohol ether phosphates, 2 parts of white oils, 1.2 parts of double seasons Penta tetrol diphosphites (626), 4.5 parts of isocyanates, 1.8 parts of calcium stearates, nominal takes 5kg, and adds in high mixer, Under the conditions of 105 DEG C, rotating speed 1800rpm, high-speed stirred 15min are kept.
The mixed uniform various raw materials of height are added in screw extruder and are processed, screw extruder parameter is：One area 110 DEG C, two 125 DEG C of areas, three 145 DEG C of areas, four 165 DEG C of areas, five 180 DEG C of areas, six 190 DEG C of areas, seven 195 DEG C of areas, 200 DEG C of 8th area, Nine 200 DEG C of areas, 190 DEG C of head, rotating speed is 180rpm, as extruding pelletization, screw cleaning agent.
Comparison example 2
18g ethylene bis stearamides (EBS) are added in a kettle., 150 DEG C of meltings are warming up to, and then add 30g polyethylene glycol, Reactor is cooled to 65 DEG C after stirring 4min, 130g stearic acids are added, finally by 14mL methyl vinyl silicon oils, 6.8mL Tween, 1.2mL ethyl acetate are disposably added in reactor, and stir 8min, are modifying agent.
2kg coarse whitings and 30g modifying agent obtained above are added in high mixer by proportioning, rotating speed 1600rpm, height is mixed 15min is rubbing agent.
According to formula：36 parts of polypropylene, 50 parts of rubbing agents, 4.5 parts of laurel alcohol ether phosphates, 2 parts of white oils, 1.2 parts of double seasons Penta tetrol diphosphites (626), 4.5 parts of isocyanates, 1.8 parts of calcium stearates, nominal takes 5kg, and adds in high mixer, Under the conditions of 105 DEG C, rotating speed 1800rpm, high-speed stirred 15min are kept.
The mixed uniform various raw materials of height are added in screw extruder and are processed, screw extruder parameter is：One area 110 DEG C, two 125 DEG C of areas, three 145 DEG C of areas, four 165 DEG C of areas, five 180 DEG C of areas, six 190 DEG C of areas, seven 195 DEG C of areas, 200 DEG C of 8th area, Nine 200 DEG C of areas, 190 DEG C of head, rotating speed is 180rpm, as extruding pelletization, screw cleaning agent.
The embodiment of table 1 and comparison example each component consumption list (unit：Parts by weight)
Screw cleaning agent made from the various embodiments described above is cleaned to double screw extruder：The extruder carries out red masterbatch Production, production terminate after, above-mentioned screw cleaning agent is added into extruder, is constantly cleaned, until extrudate is not contained Untill red, the consumption of cleaning agent is recorded.
The embodiment of table 2 and comparison example property indices
Compared with pure resin is cleaned, cleaning materials are saved
Embodiment 1 ≥50%
Embodiment 2 ≥70%
Embodiment 3 ≥65%
Embodiment 4 ≥80%
Comparison example 1 ≥30%
Comparison example 2 ≥55%

Claims (9)

1. a kind of screw cleaning agent, it is characterised in that be formulated by weight percentage as follows：
Polyolefin-based substrates 30 ~ 70
Rubbing agent 20 ~ 60
Surfactant 2 ~ 10
Lubricant 1 ~ 7
Antioxidant 0.5 ~ 2
Foaming agent 1 ~ 10
Blowing promotor 0.5 ~ 5.
2. a kind of screw cleaning agent according to claim 1, it is characterised in that the rubbing agent is modified calcium carbonate, It is that fine particle calcium carbonate is coated on into coarse whiting surface, then its surface is modified with modifying agent, and preparation process is as follows：
(1) chemical additives, pH adjusting agent, Ca are added by proportioning in a kettle.2+Solution and coarse whiting (GCC), start agitator, 600 ~ 1200rpm of rotating speed, control temperature is passed through CO at 20 ~ 60 DEG C2, as reacting slurry pH=7.5 ~ 8.0, it is passed through CO2Flow Halve, until reacting slurry pH=6.5 ~ 7.0 when, stop ventilation, terminate reaction, obtain coating GCC slurries, through plate compression, Filter cake is dried, pulverized and sieved, and obtains compound calcium carbonate microparticle, standby；
(2) ethylene bis stearamide (EBS) is added in a kettle., is warming up to 150 ~ 160 DEG C of meltings, is then added poly- second two Alcohol, stirring 2 ~ 6min after reactor is cooled to 60 ~ 70 DEG C, add stearic acid, finally by methyl vinyl silicon oil, tween, Ethyl acetate is disposably added in reactor, and stirs 6 ~ 12min, produces modifying agent；
(3) modifying agent that the compound calcium carbonate microparticle for preparing step (1) by proportioning is prepared with step (2) is added to high mixer In, rotating speed 600 ~ 2000rpm, 10 ~ 60min obtain modified rubbing agent；
At least a kind of water-soluble plant selected from tea polysaccharide, soybean polyoses or Polysaccharides in Bamboo Leaves of step (1) crystal control agent Many carbohydrates and their derivatives, addition is the 1 ~ 2% of coarse whiting (GCC) quality；
Step (1) the pH adjusting agent concentration be 20wt% ammoniacal liquor, its addition for step (1) reacting slurry cumulative volume 1 ~ 2%；
Step (1) coarse whiting (GCC) particle diameter is 2 ~ 40 μm；
The Ca2+Solution is that the one or two kinds of in calcium chloride, calcium nitrate is dissolved in into water to be configured to Ca2+Concentration be 0.05 ~ 0.50mol/L solution；
The m (GCC):m(CaX2) =(2~10):1, wherein X=Cl or NO3；
Step (1) CO2Flow is 1.0 ~ 5.0L/ min；
Step (2) modifier components are in mass ratio：Stearic acid 60 ~ 75, ethylene bis stearamide (EBS) 5 ~ 9, methyl second Alkenyl silicone oil 4 ~ 10, tween 4 ~ 7, polyethylene glycol 10 ~ 15, ethyl acetate 0.5 ~ 2, modifying agent addition are the compound of step (1) 0.5 ~ 3wt% of type calcium carbonate microparticle.
3. a kind of screw cleaning agent according to claim 1 or 2, it is characterised in that the polyolefin-based substrates are poly- second The material of alkenes or the material of PP type.
4. a kind of screw cleaning agent according to claim 1, it is characterised in that the surfactant is anhydrous sorbitol One or more in fatty acid ester (sapn), laurel alcohol ether phosphate, butyl.
5. a kind of screw cleaning agent according to claim 1, it is characterised in that the lubricant be OPE, One or more in stearic acid, magnesium stearate, white oil.
6. a kind of screw cleaning agent according to claim 1, it is characterised in that the antioxidant is three [the tertiary fourths of 2.4- bis- Base phenyl] phosphite ester (168), four [β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol esters (1010), double seasons One or more in penta tetrol diphosphites (626).
7. a kind of screw cleaning agent according to claim 1, it is characterised in that the foaming agent is sodium acid carbonate, azo One or more in diformamide (AC), isocyanates；The blowing promotor is zinc stearate, calcium stearate, zinc oxide, oxygen Change the one or more in barium.
8. a kind of screw cleaning agent according to claim 2, it is characterised in that the mill of the screw cleaning agent rubbing agent Consumption value is 12.0 ~ 21.0 mg.
9. a kind of preparation method of screw cleaning agent described in claim 1-8, comprises the following steps：
(1) according to formula, vistanex, rubbing agent, surfactant, lubricant, antioxidant, foaming agent, foaming is weighed and is helped Agent, and add in high mixer, under the conditions of 80-120 DEG C, keep rotating speed 600-2000 rpm, high-speed stirred 5-30min；
(2) by step（1）The height of acquisition mixes uniform vistanex, rubbing agent, surfactant, lubricant, antioxidant, hair Infusion, blowing promotor are added in double screw extruder and are processed, and screw extruder parameter is：One 90-110 DEG C of area, 2nd area 100-130 DEG C, three 120-140 DEG C of areas, four 130-150 DEG C of areas, five 140-160 DEG C of areas, six 150-170 DEG C of areas, seven area 160-180 DEG C, 170-190 DEG C of 8th area, 170-210 DEG C of 9th area, 165-200 DEG C of head, rotating speed is 10-300rpm, as extruding pelletization, spiral shell Bar cleaning agent.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109608726A (en) * 2018-10-31 2019-04-12 金旸（厦门）新材料科技有限公司 A kind of screw extruder washing machine masterbatch and preparation method thereof
CN112126149A (en) * 2020-10-10 2020-12-25 江阴升辉包装材料有限公司 Die flushing material for extrusion processing and preparation method thereof

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101838420A (en) * 2010-05-04 2010-09-22 彭超 Solid energy saving screw cleaning agent
CN105295217A (en) * 2015-10-28 2016-02-03 鸿富泰精密电子（烟台）有限公司 Solid screw cleaning agent and preparation method thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101838420A (en) * 2010-05-04 2010-09-22 彭超 Solid energy saving screw cleaning agent
CN105295217A (en) * 2015-10-28 2016-02-03 鸿富泰精密电子（烟台）有限公司 Solid screw cleaning agent and preparation method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109608726A (en) * 2018-10-31 2019-04-12 金旸（厦门）新材料科技有限公司 A kind of screw extruder washing machine masterbatch and preparation method thereof
CN112126149A (en) * 2020-10-10 2020-12-25 江阴升辉包装材料有限公司 Die flushing material for extrusion processing and preparation method thereof

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