CN105949507B - A kind of plastic lubricating agent and preparation method thereof - Google Patents
A kind of plastic lubricating agent and preparation method thereof Download PDFInfo
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- CN105949507B CN105949507B CN201610301928.2A CN201610301928A CN105949507B CN 105949507 B CN105949507 B CN 105949507B CN 201610301928 A CN201610301928 A CN 201610301928A CN 105949507 B CN105949507 B CN 105949507B
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- lubricating agent
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/10—Esters; Ether-esters
- C08K5/101—Esters; Ether-esters of monocarboxylic acids
- C08K5/103—Esters; Ether-esters of monocarboxylic acids with polyalcohols
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/066—LDPE (radical process)
Abstract
The invention belongs to plastics arts, and in particular to a kind of plastic lubricating agent and preparation method thereof.Plastic lubricating agent of the present invention is prepared from the following materials：30~50 parts of 100~120 parts of glyceryl tristearate, 60~80 parts of pentaerythritol stearate and polyethylene.Plastic lubricating agent of the present invention can effectively improve plastics lubricity, reduce friction, reduce Interface Adhesion performance, mobility and release property are improved in the processing such as plastics, it prevents from adhering in machine or in mold and the defects of output flake, while cost of material is low, preparation method is simple.
Description
Technical field
The invention belongs to plastics arts, and in particular to a kind of plastic lubricating agent and preparation method thereof.
Background technology
With the extensive application continually developed with device of plastic processing of domestic and international plastic processing technology, in order to improve processing
Speed reduces energy consumption, improves plastic products quality, especially apparent mass, and the kind and quantity of plastic lubricating agent are obtained for
It rapidly develops.Plastic lubricating agent is to confer to plastics lubricity as important auxiliary agent a kind of in plastic processing, effect, to reduce
It is harmful to rub and prevent article interface from adhering to.The various types of plastic lubricating agent according to the lubricating action of lubricant, are divided into interior profit
Lubrication prescription (fatty acid ester and alcohols etc.), external lubricant (metallic soap, higher fatty acids, fatty acid amide and paraffin etc.) and compound profit
Lubrication prescription (metal soap calcium stearate and fatty acid soaps etc.) three categories.
In-lubricant is typically the small molecular organic compounds with polar group.According to similar compatibility principle, interior lubrication
Agent has good compatibility with polar resin.In-lubricant can be relatively easy to be inserted between each layer particle of resin and
Between the segment of intramolecular.Before Plastic, the affinity of the polarity node of resin and the polar portion of in-lubricant is stronger,
Complex bonds are formed after chemisorbed, are in the combination of dynamic equilibrium, reduce the intersegmental frictional force of resin chain；After Plastic,
The polar group of in-lubricant reduces the interaction force between intermolecular in melt and molecule segment, is easy to resin melt
Flowing, reduces plasticizing torque, reduces melt viscosity, play the role of interior lubrication.
At present, in-lubricant is mainly using fatty acid ester and alcohols, such as aliphatic acid, fatty alcohol, soybean oil, polyethylene wax
Deng as raw material, in-lubricant is made through handling, these in-lubricant product structures are fairly simple, and properties of product are single, not
The requirement of plastics processing can be met.Therefore, those skilled in the art attempt to compound a variety of esters, alcohols and acids
Prepare in-lubricant, as Chinese patent application 103012995A disclose it is a kind of by hydroxy stearic acid, pentaerythritol stearate,
The compounded lubricant of octadecyl alcolol and aliphatic acid composition has both two kinds of effects of interior lubrication and outer lubrication, but its formula is complex, into
This is higher, and poor in terms of plastic flow property and release property is improved.
Invention content
For overcome the deficiencies in the prior art, the purpose of the present invention is to provide a kind of plastic lubricating agents, can effectively carry
High plastics lubricity reduces friction, reduces Interface Adhesion performance, and mobility and release property are improved in the processing such as plastics, is prevented
It adheres in machine or in mold and the defects of output flake.
To achieve these goals, technical scheme is as follows：
A kind of plastic lubricating agent, is prepared from the following materials：100~120 parts of glyceryl tristearate, pentaerythrite are hard
30~50 parts of 60~80 parts of resin acid ester and polyethylene.
Preferably, it is prepared from the following materials：110 parts of glyceryl tristearate, 70 parts of pentaerythritol stearate and
40 parts of polyethylene.
Preferably, the pentaerythritol stearate is in pentaerythritol monostearate and the double stearates of pentaerythrite
One or two.
Further preferably, the pentaerythritol stearate is pentaerythritol monostearate and the double stearates of pentaerythrite
Composition, described be the weight ratio of the double stearates of pentaerythritol monostearate and pentaerythrite is 1: (2~3).
Preferably, the polyethylene is low density polyethylene (LDPE).
Correspondingly, the present invention also provides the preparation method of above-mentioned plastic lubricating agent, following steps are specifically included：According to
Formula ratio weighs glyceryl tristearate, pentaerythritol stearate and polyethylene, first puts into glyceryl tristearate at a high speed
In shear mixer, the titanate coupling agent of glyceryl tristearate weight 1~4% is added in after dissolving, reaction 20 at 100 DEG C~
30min；Then put into pentaerythritol stearate, nitrogen protection, be gradually heating to 120 under 0.03~0.05MPa of negative pressure~
130 DEG C, 20~30min of insulation reaction；Continue to put into polyethylene, in nitrogen protection, 0.03~0.05MPa of negative pressure, rise
For temperature to 150~160 DEG C, 50~60min of insulation reaction, plastic lubricating agent is made in cooling.
Preferably, the titanate coupling agent is isopropyl three (dioctylphyrophosphoric acid acyloxy) titanate esters.
Compared with prior art, the present invention has the advantage that：
(1) the present invention provides a kind of new plastic lubricating agent, which is one kind by glyceryl tristearate, season penta
The compound that tetrol stearate and polyethylene are prepared under certain condition, it is good with resin compatible, it can effectively improve
Plastics lubricity reduces friction, reduces Interface Adhesion performance, and mobility and release property are improved in the processing such as plastics, is prevented
It adheres the defects of output flake, and can be used with other additive compatibilities, while cost of material is low in machine or in mold.
(2) preparation method of plastic lubricating agent of the present invention is simple, without considering that complicated synthesis chemical constitution changes, compared with
Into a kind of compound of homogeneous in the short time, without using organic solvent, energy consumption is extremely low, and comprehensive production cost declines, and
Non-environmental-pollution, three-waste free discharge.
Specific embodiment
The present invention is further described, but the present invention is not limited only to following embodiment below by way of specific embodiment.
It in the scope of the present invention or is not departing from present disclosure, in spirit and scope, the present invention is suitably modified, is replaced
The identical component of effect, apparent to those skilled in the art, they are considered as being included in the scope of the invention
It is interior.
The low density polyethylene (LDPE) (LDPE) of the present invention, No. CAS is 9002-88-4.
Embodiment 1, plastic lubricating agent of the present invention and its preparation
Formula：Glyceryl tristearate 100kg, pentaerythritol stearate 60kg and low density polyethylene (LDPE) 30kg；It is described
Pentaerythritol stearate is pentaerythritol monostearate and the composition of the double stearates of pentaerythrite, and described is Ji Wusi
The weight ratio of alcohol monostearate and the double stearates of pentaerythrite is 1: 2.
Preparation method：Glyceryl tristearate, pentaerythritol stearate and polyethylene are weighed according to formula ratio, is first put into
In glyceryl tristearate to high speed shear mixer, the isopropyl three (two of glyceryl tristearate weight 1% is added in after dissolving
Octyl group pyrophosphoric acid acyloxy) titanate esters, 20min is reacted at 100 DEG C；Then put into pentaerythritol stearate, nitrogen protect,
120 DEG C are gradually heating under negative pressure 0.03MPa, insulation reaction 20min；Continue to put into polyethylene, in nitrogen protection, negative pressure
In the case of 0.03MPa, 150 DEG C, insulation reaction 50min are warming up to, plastic lubricating agent is made in cooling.
Embodiment 2, plastic lubricating agent of the present invention and its preparation
Formula：Glyceryl tristearate 120kg, pentaerythritol stearate 80kg and low density polyethylene (LDPE) 50kg；It is described
Pentaerythritol stearate is pentaerythritol monostearate and the composition of the double stearates of pentaerythrite, and described is Ji Wusi
The weight ratio of alcohol monostearate and the double stearates of pentaerythrite is 1: 3.
Preparation method：Glyceryl tristearate, pentaerythritol stearate and polyethylene are weighed according to formula ratio, is first put into
In glyceryl tristearate to high speed shear mixer, the isopropyl three (two of glyceryl tristearate weight 4% is added in after dissolving
Octyl group pyrophosphoric acid acyloxy) titanate esters, 30min is reacted at 100 DEG C；Then put into pentaerythritol stearate, nitrogen protect,
130 DEG C are gradually heating under negative pressure 0.05MPa, insulation reaction 30min；Continue to put into polyethylene, in nitrogen protection, negative pressure
In the case of 0.05MPa, 160 DEG C, insulation reaction 60min are warming up to, plastic lubricating agent is made in cooling.
Embodiment 3, plastic lubricating agent of the present invention and its preparation
Formula：Glyceryl tristearate 120kg, pentaerythritol stearate 60kg and low density polyethylene (LDPE) 30kg；It is described
Pentaerythritol stearate is pentaerythritol monostearate and the composition of the double stearates of pentaerythrite, and described is Ji Wusi
The weight ratio of alcohol monostearate and the double stearates of pentaerythrite is 1: 2.
Preparation method：Glyceryl tristearate, pentaerythritol stearate and polyethylene are weighed according to formula ratio, is first put into
In glyceryl tristearate to high speed shear mixer, the isopropyl three (two of glyceryl tristearate weight 3% is added in after dissolving
Octyl group pyrophosphoric acid acyloxy) titanate esters, 20min is reacted at 100 DEG C；Then put into pentaerythritol stearate, nitrogen protect,
130 DEG C are gradually heating under negative pressure 0.03MPa, insulation reaction 30min；Continue to put into polyethylene, in nitrogen protection, negative pressure
In the case of 0.03MPa, 160 DEG C, insulation reaction 60min are warming up to, plastic lubricating agent is made in cooling.
Embodiment 4, plastic lubricating agent of the present invention and its preparation
Formula：Glyceryl tristearate 110kg, pentaerythritol stearate 70kg and low density polyethylene (LDPE) 40kg；It is described
Pentaerythritol stearate is pentaerythritol monostearate and the composition of the double stearates of pentaerythrite, and described is Ji Wusi
The weight ratio of alcohol monostearate and the double stearates of pentaerythrite is 1: 2.
Preparation method：Glyceryl tristearate, pentaerythritol stearate and polyethylene are weighed according to formula ratio, is first put into
In glyceryl tristearate to high speed shear mixer, the isopropyl three (two of glyceryl tristearate weight 2% is added in after dissolving
Octyl group pyrophosphoric acid acyloxy) titanate esters, 30min is reacted at 100 DEG C；Then put into pentaerythritol stearate, nitrogen protect,
120 DEG C are gradually heating under negative pressure 0.04MPa, insulation reaction 20min；Continue to put into polyethylene, in nitrogen protection, negative pressure
In the case of 0.04MPa, 150 DEG C, insulation reaction 60min are warming up to, plastic lubricating agent is made in cooling.
Embodiment 5, plastic lubricating agent of the present invention and its preparation
Formula：Glyceryl tristearate 110kg, pentaerythritol monostearate 70kg and low density polyethylene (LDPE) 40kg.
Preparation method：Glyceryl tristearate, pentaerythritol stearate and polyethylene are weighed according to formula ratio, is first put into
In glyceryl tristearate to high speed shear mixer, the isopropyl three (two of glyceryl tristearate weight 2% is added in after dissolving
Octyl group pyrophosphoric acid acyloxy) titanate esters, 30min is reacted at 100 DEG C；Then put into pentaerythritol stearate, nitrogen protect,
120 DEG C are gradually heating under negative pressure 0.04MPa, insulation reaction 20min；Continue to put into polyethylene, in nitrogen protection, negative pressure
In the case of 0.04MPa, 150 DEG C, insulation reaction 60min are warming up to, plastic lubricating agent is made in cooling.
Embodiment 6, plastic lubricating agent of the present invention and its preparation
Formula：The double stearate 70kg and low density polyethylene (LDPE) 40kg of glyceryl tristearate 110kg, pentaerythrite.
Preparation method：Glyceryl tristearate, pentaerythritol stearate and polyethylene are weighed according to formula ratio, is first put into
In glyceryl tristearate to high speed shear mixer, the isopropyl three (two of glyceryl tristearate weight 2% is added in after dissolving
Octyl group pyrophosphoric acid acyloxy) titanate esters, 30min is reacted at 100 DEG C；Then put into pentaerythritol stearate, nitrogen protect,
120 DEG C are gradually heating under negative pressure 0.04MPa, insulation reaction 20min；Continue to put into polyethylene, in nitrogen protection, negative pressure
In the case of 0.04MPa, 150 DEG C, insulation reaction 60min are warming up to, plastic lubricating agent is made in cooling.
Comparative example 1
Compared with Example 4, this comparative example difference lies in：Use Di(dioctylpyrophosphato) ethylene titanate
Instead of isopropyl three (dioctylphyrophosphoric acid acyloxy) titanate esters.
Comparative example 2
Compared with Example 4, this comparative example difference lies in：Low density polyethylene (LDPE) is replaced using high density polyethylene (HDPE).
Comparative example 3
With embodiment 4, difference is the formula of this comparative example：Preparation method：Three glycerol stearates are weighed according to formula ratio
Ester, pentaerythritol stearate and polyethylene first put into glyceryl tristearate to high speed shear mixer, are added in after dissolving
Isopropyl three (dioctylphyrophosphoric acid acyloxy) titanate esters of glyceryl tristearate weight 2% react 30min at 100 DEG C；It connects
Input pentaerythritol stearate, is gradually heating to 110 DEG C under nitrogen protection, negative pressure 0.01MPa, insulation reaction 20min；
Continue to put into polyethylene, in nitrogen protection, negative pressure 0.01MPa, be warming up to 140 DEG C, insulation reaction 60min, cool down, system
Obtain plastic lubricating agent.
Test example one, extrusion test
Will the plastic lubricating agent as made from Examples 1 to 6, comparative example 1~3 in polyvinyl chloride processing and forming in mass ratio
Ratio for 0.3% is added in polyvinyl chloride, hot melt, mixing, and extrusion test and relationship are carried out using 20 single screw extrusion machines of Φ
Expression surface smoothness and finish.Extrusion condition：One area of temperature, 80 DEG C；Two 150 DEG C of areas；Three 154 DEG C of areas；150 DEG C of head；
Rotating speed 40r/min.Extrusion test result see the table below 1.
1 extrusion test result of table
| Project | Extrusion capacity/(g/min) | Expression surface smoothness | Expression surface finish |
| Unlubricated dose | 29.5 | It is smoother | Coarse no-reflection |
| Embodiment 1 | 42.3 | Smoothly | It is bright and clean have it is reflective |
| Embodiment 2 | 40.7 | Smoothly | It is bright and clean have it is reflective |
| Embodiment 3 | 41.8 | Smoothly | It is bright and clean have it is reflective |
| Embodiment 4 | 47.6 | Smoothly | It is bright and clean have it is reflective |
| Embodiment 5 | 40.1 | Smoothly | It is more bright and clean |
| Embodiment 6 | 35.9 | Smoothly | It is bright and clean have it is reflective |
| Comparative example 1 | 33.6 | It is smoother | It is more bright and clean |
| Comparative example 2 | 38.7 | Smoothly | Coarse no-reflection |
| Comparative example 3 | 37.4 | Smoothly | It is more bright and clean |
By upper table 1 it is found that being apparently higher than using the plastic extrusion amount of the plastic lubricating agent of the embodiment of the present invention 1~6 does not have
Using the plastics (unlubricated dose of group) of lubricant, height at least 38%, and expression surface it is smooth, it is bright and clean have reflective, show this hair
Bright plastic lubricating agent improves apparent mass to the high lubricating effects of plastics.With the extrusion capacity of embodiment 4 in Examples 1 to 6
Highest, therefore embodiment 4 is highly preferred embodiment of the present invention.
Comparative example 1 changes the type of titanate coupling agent, and comparative example 2 replaces low density polyethylene using high density polyethylene (HDPE)
Alkene, comparative example 3 change preparation temperature, and when lubricant obtained is applied to plastic processing, extrusion capacity has different degrees of
Decline, and the smoothness of expression surface and finish are also deteriorated.
It the above is only the preferred embodiment of the present invention, it is noted that above-mentioned preferred embodiment is not construed as pair
The limitation of the present invention, protection scope of the present invention should be subject to claim limited range.For the art
For those of ordinary skill, without departing from the spirit and scope of the present invention, several improvements and modifications can also be made, these change
Protection scope of the present invention is also should be regarded as into retouching.
Claims (4)
1. a kind of plastic lubricating agent, which is characterized in that be prepared from the following materials：100 ~ 120 parts of glyceryl tristearate, season
30 ~ 50 parts of penta 60 ~ 80 parts of tetrol stearate and polyethylene；
The pentaerythritol stearate is the composition of pentaerythritol monostearate and the double stearates of pentaerythrite, described
Weight ratio for pentaerythritol monostearate and the double stearates of pentaerythrite is 1:（2~3）；
The polyethylene is low density polyethylene (LDPE).
2. plastic lubricating agent according to claim 1, which is characterized in that be prepared from the following materials：Three stearic acid are sweet
40 parts of 110 parts of grease, 70 parts of pentaerythritol stearate and polyethylene.
A kind of 3. method for preparing plastic lubricating agent as claimed in claim 1 or 2, which is characterized in that include the following steps：It presses
Glyceryl tristearate, pentaerythritol stearate and polyethylene are weighed according to formula ratio, it is supreme first to put into glyceryl tristearate
In fast shear mixer, the titanate coupling agent of glyceryl tristearate weight 1 ~ 4% is added in after dissolving, reaction 20 at 100 DEG C ~
30min；Then pentaerythritol stearate is put into, 120 ~ 130 are gradually heating under nitrogen protection, 0.03 ~ 0.05MPa of negative pressure
DEG C, 20 ~ 30min of insulation reaction；Continue to put into polyethylene, in nitrogen protection, 0.03 ~ 0.05MPa of negative pressure, be warming up to
150 ~ 160 DEG C, 50 ~ 60min of insulation reaction, plastic lubricating agent is made in cooling.
4. the preparation method of plastic lubricating agent as claimed in claim 3, which is characterized in that the titanate coupling agent is isopropyl
Base three（Dioctylphyrophosphoric acid acyloxy）Titanate esters.
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| CN102321276A (en) * | 2011-07-29 | 2012-01-18 | 广东若天新材料科技有限公司 | Transparent environment-friendly calcium zinc stabilizer and preparation method thereof |
| CN104262804A (en) * | 2014-10-15 | 2015-01-07 | 山东世拓高分子材料股份有限公司 | Impact modifier composition for PVC (polyvinyl chloride) pipe fitting product and preparation method of impact modifier composition |
| CN104774423A (en) * | 2014-01-15 | 2015-07-15 | 中国海洋石油总公司 | Low-corrosion and low-formaldehyde-release polyformaldehyde composition and preparation method and application thereof |
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2016
- 2016-05-06 CN CN201610301928.2A patent/CN105949507B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101456977A (en) * | 2008-12-16 | 2009-06-17 | 浙江传化华洋化工有限公司 | Method for preparing Ca-Zn composite heat stabilizer |
| CN102321276A (en) * | 2011-07-29 | 2012-01-18 | 广东若天新材料科技有限公司 | Transparent environment-friendly calcium zinc stabilizer and preparation method thereof |
| CN104774423A (en) * | 2014-01-15 | 2015-07-15 | 中国海洋石油总公司 | Low-corrosion and low-formaldehyde-release polyformaldehyde composition and preparation method and application thereof |
| CN104262804A (en) * | 2014-10-15 | 2015-01-07 | 山东世拓高分子材料股份有限公司 | Impact modifier composition for PVC (polyvinyl chloride) pipe fitting product and preparation method of impact modifier composition |
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