阅读说明：本技术 一种聚氯乙烯润滑剂配方及其制作工艺 (Formula and preparation process of polyvinyl chloride lubricant ) 是由 解锦琴 黄西军 解伟 于 2021-09-17 设计创作，主要内容包括：本发明公开了一种聚氯乙烯润滑剂配方及其制作工艺,通过配制以下组分及各组分的重量份数为：高碳醇脂肪酸酯复合物110-165份；高碳醇55-105份；硬脂酸单甘油酯35-60份；改良剂1-5份；催化剂5-15份；并搅拌均匀制成原料放入反应釜内部；本发明具有与聚氯乙烯树脂有很好相容性,可以提高熔体内润滑作用,且分子间又通过氢键鍗,使得极性下降,外润滑作用增强,实现了具有内外润滑的作用,此外还具有加速熔融、降低熔融黏度、延长加工寿命、改善流动性和提高透明性等特点,通过与聚氯乙烯有极好的相容性赋予硬质和软质聚氯乙烯制品优异的热稳定性和透明性,安全无毒环保,具有超加和效应提高综合性能,配方新颖,工艺巧妙,具有良好的应用前景。(The invention discloses a polyvinyl chloride lubricant formula and a preparation process thereof, wherein the formula comprises the following components in parts by weight: 110-165 parts of higher alcohol fatty acid ester compound; 55-105 parts of higher alcohol; 35-60 parts of stearic acid monoglyceride; 1-5 parts of a modifier; 5-15 parts of a catalyst; and stirring uniformly to prepare raw materials, and putting the raw materials into a reaction kettle; the invention has good compatibility with polyvinyl chloride resin, can improve the internal lubrication effect, enhances the polarity reduction and the external lubrication effect by the hydrogen-bond between molecules through the hydrogen-bonds, realizes the effect of internal and external lubrication, has the characteristics of melting acceleration, melt viscosity reduction, processing life prolongation, fluidity improvement, transparency improvement and the like, endows the hard and soft polyvinyl chloride products with excellent thermal stability and transparency by having excellent compatibility with polyvinyl chloride, is safe, nontoxic and environment-friendly, has super-additive effect, improves the comprehensive performance, has novel formula and skillful process, and has good application prospect.)

1. The formula of the polyvinyl chloride lubricant is characterized by comprising the following components in parts by weight:

higher alcohol fatty acid ester complex: 110-165 parts;

high-carbon alcohol: 55-105 parts of a modifier;

stearic acid monoglyceride: 35-60 parts;

modifying agent: 1-5 parts;

catalyst: 5-15 parts.

2. The polyvinyl chloride lubricant formulation of claim 1, wherein the higher alcohol fatty acid ester complex is a higher alcohol phthalate.

3. The polyvinyl chloride lubricant formulation of claim 1, wherein the higher alcohol is a mixture of cetyl alcohol and stearyl alcohol, and the ratio of cetyl alcohol to stearyl alcohol is 2: 5.

4. the polyvinyl chloride lubricant formulation of claim 1, wherein the modifier is sodium hypophosphite and the catalyst is stannous chloride.

5. The polyvinyl chloride lubricant formulation of claim 1, comprising the following components in parts by weight:

higher alcohol fatty acid ester complex: 145 parts of;

high-carbon alcohol: 76 parts of a mixture;

stearic acid monoglyceride: 52 parts of (1);

modifying agent: 2.2 parts of;

catalyst: 7.8 parts.

6. A preparation process of a polyvinyl chloride lubricant formula is characterized by comprising the following steps,

step (A), preparing materials, namely preparing the following components in parts by weight: 110-165 parts of higher alcohol fatty acid ester compound; 55-105 parts of higher alcohol; 35-60 parts of stearic acid monoglyceride; 1-5 parts of a modifier; 5-15 parts of a catalyst; and stirring uniformly to prepare raw materials;

step (B), the uniformly stirred raw materials are put into a reaction kettle, and the temperature in the tower is controlled to be kept between 185 ℃ and 195 ℃;

step (C), controlling the reaction temperature and keeping the reaction temperature between 190 ℃ and 230 ℃, and the specific process is as follows,

(C1) in the pre-stage, the temperature is linearly increased within 0.5h from 190 ℃ to 205 ℃;

(C2) in the first stage, the temperature is linearly increased within 1.5h from 205-210 ℃;

(C3) in the second stage, the temperature is linearly increased within 3 hours from 210 ℃ to 220 ℃;

(C4) in the third stage, the temperature is linearly increased within 2 hours from 220 ℃ to 230 ℃;

(C5) in the fourth stage, the temperature is kept at 230 ℃ for 2 hours;

step (D), monitoring whether the sampling acid value is less than 2mgkoh/g, if so, continuing the reaction, and if not, stopping the reaction;

step (E), cooling the solution in the reaction kettle to obtain a semi-finished product of the polyvinyl chloride lubricant, and transporting the semi-finished product to the inside of a scraping machine for processing operation;

and (F) crushing the semi-finished product of the polyvinyl chloride lubricant processed by the scraping machine, and packaging and storing the crushed finished product powder of the polyvinyl chloride lubricant.

7. The process for preparing a formulation of polyvinyl chloride lubricant according to claim 6, wherein in step (E), the solution in the reaction vessel is cooled to obtain a semi-finished product of polyvinyl chloride lubricant, and the semi-finished product is transported to the inside of a scraper for processing, and the specific steps are as follows:

(E1) scraping the outer surface of the semi-finished product of the polyvinyl chloride lubricant;

(E2) slicing the scraped semi-finished product of the polyvinyl chloride lubricant;

(E3) monitoring the quality of the sliced semi-finished product of the polyvinyl chloride lubricant, and sampling to check whether the acid value is qualified or not;

(E4) and packaging and transporting the qualified semi-finished product of the flaky polyvinyl chloride lubricant.

8. The process for preparing a formulation of polyvinyl chloride lubricant according to claim 6, wherein in the step (B), the uniformly stirred raw materials are put into a reaction kettle, and the temperature in the tower is controlled to be between 185 ℃ and 195 ℃, wherein the temperature for temporarily storing the uniformly stirred raw materials is controlled to be between 50 ℃ and 60 ℃.

9. The process for preparing a polyvinyl chloride lubricant formulation according to claim 6, wherein in step (A), the following components are prepared and the weight parts of the components are as follows: 145 parts of higher alcohol fatty acid ester compound; 76 parts of higher alcohol; 52 parts of stearic acid monoglyceride; 2.2 parts of a modifier; and 7.8 parts of a catalyst.

Technical Field

The invention relates to the technical field of preparation of polyvinyl chloride lubricants, in particular to a formula and a preparation process of a polyvinyl chloride lubricant.

Background

The lubricant is an additive capable of improving the plastic processing fluidity, generally has a structure comprising two parts of a non-polar long chain and a polar group, has the effects of promoting melting, facilitating demoulding, preventing static electricity, preventing adhesion and the like besides improving the melt fluidity, and can be divided into an external lubricant and an internal lubricant according to the action mechanism.

The external lubricant reduces the friction between the plastic melt and the metal surface of the forming processing equipment by improving the friction condition of the plastic melt and the metal surface of the forming processing equipment, so that the plastic part is easy to demould. The compatibility of the external lubricant and the plastic is poor, and the external lubricant is easy to migrate from the melt to the outside, so that a thin isolating film is formed between the melt and the mold, and the plastic melt is prevented from being adhered to the surface of a machine barrel or the mold; the internal lubricant has good compatibility with plastics, and plays a role in reducing intermolecular cohesion in the plastic melt, so that the internal friction of the plastic melt can be reduced, the melting rate and the melt deformability of the plastics can be increased, the melt viscosity can be reduced, and the plasticizing performance can be improved.

At present, the lubricants have the functions of internal lubrication with one side and external lubrication with the other side, but few lubricants have the functions of internal and external, and the lubricants in the processing of polyvinyl chloride plastics have fewer varieties, little choice, low product performance and technical content and unsatisfactory lubricating performance; therefore, it is necessary to design a formula of polyvinyl chloride lubricant and a preparation process thereof.

Disclosure of Invention

The invention aims to solve the problems that the existing lubricant has the functions of internal lubrication with the side weight and external lubrication with the side weight, and only one lubricant can have the functions of both inside and outside, but the lubricant product in the polyvinyl chloride plastic processing has fewer varieties, small choice, low product performance and technical content and unsatisfactory lubricating performance of the lubricant; the polyvinyl chloride lubricant formula and the preparation process thereof have the advantages of novel formula, ingenious process and good application prospect.

In order to achieve the purpose, the invention adopts the technical scheme that:

a polyvinyl chloride lubricant formula comprises the following components in parts by weight:

higher alcohol fatty acid ester complex: 110-165 parts;

high-carbon alcohol: 55-105 parts of a modifier;

stearic acid monoglyceride: 35-60 parts;

modifying agent: 1-5 parts;

catalyst: 5-15 parts.

In the formula of the polyvinyl chloride lubricant, the higher alcohol fatty acid ester compound is higher alcohol phthalate.

In the formula of the polyvinyl chloride lubricant, the higher alcohol is a mixture of cetyl alcohol and stearyl alcohol, and the content ratio of the cetyl alcohol to the stearyl alcohol is 2: 5.

in the formula of the polyvinyl chloride lubricant, the modifying agent is sodium hypophosphite, and the catalyst is stannous chloride.

The formula of the polyvinyl chloride lubricant comprises the following components in parts by weight:

higher alcohol fatty acid ester complex: 145 parts of;

high-carbon alcohol: 76 parts of a mixture;

stearic acid monoglyceride: 52 parts of (1);

modifying agent: 2.2 parts of;

catalyst: 7.8 parts.

A process for preparing the lubricant formula of polyvinyl chloride includes such steps as preparing the lubricant,

step (A), preparing materials, namely preparing the following components in parts by weight: 110-165 parts of higher alcohol fatty acid ester compound; 55-105 parts of higher alcohol; 35-60 parts of stearic acid monoglyceride; 1-5 parts of a modifier; 5-15 parts of a catalyst; and stirring uniformly to prepare raw materials;

step (B), the uniformly stirred raw materials are put into a reaction kettle, and the temperature in the tower is controlled to be kept between 185 ℃ and 195 ℃;

step (C), controlling the reaction temperature and keeping the reaction temperature between 190 ℃ and 230 ℃, and the specific process is as follows,

(C1) in the pre-stage, the temperature is linearly increased within 0.5h from 190 ℃ to 205 ℃;

(C2) in the first stage, the temperature is linearly increased within 1.5h from 205-210 ℃;

(C3) in the second stage, the temperature is linearly increased within 3 hours from 210 ℃ to 220 ℃;

(C4) in the third stage, the temperature is linearly increased within 2 hours from 220 ℃ to 230 ℃;

(C5) in the fourth stage, the temperature is kept at 230 ℃ for 2 hours;

step (D), monitoring whether the sampling acid value is less than 2mgkoh/g, if so, continuing the reaction, and if not, stopping the reaction;

step (E), cooling the solution in the reaction kettle to obtain a semi-finished product of the polyvinyl chloride lubricant, and transporting the semi-finished product to the inside of a scraping machine for processing operation;

and (F) crushing the semi-finished product of the polyvinyl chloride lubricant processed by the scraping machine, and packaging and storing the crushed finished product powder of the polyvinyl chloride lubricant.

The preparation process of the formula of the polyvinyl chloride lubricant comprises the step (E) of cooling the solution in the reaction kettle to obtain a semi-finished product of the polyvinyl chloride lubricant, and conveying the semi-finished product to the inside of a scraping machine for processing, wherein the preparation process comprises the following specific steps:

(E1) scraping the outer surface of the semi-finished product of the polyvinyl chloride lubricant;

(E2) slicing the scraped semi-finished product of the polyvinyl chloride lubricant;

(E3) monitoring the quality of the sliced semi-finished product of the polyvinyl chloride lubricant, and sampling to check whether the acid value is qualified or not;

(E4) and packaging and transporting the qualified semi-finished product of the flaky polyvinyl chloride lubricant.

The preparation process of the polyvinyl chloride lubricant formula comprises the step (B) of putting the uniformly stirred raw materials into a reaction kettle, and controlling the temperature in a tower to be kept between 185 ℃ and 195 ℃, wherein the temporary storage temperature of the uniformly stirred raw materials is kept between 50 ℃ and 60 ℃.

The preparation process of the formula of the polyvinyl chloride lubricant comprises the step (A) of preparing the following components in parts by weight: 145 parts of higher alcohol fatty acid ester compound; 76 parts of higher alcohol; 52 parts of stearic acid monoglyceride; 2.2 parts of a modifier; and 7.8 parts of a catalyst.

The invention has the beneficial effects that: the formula and the preparation process of the polyvinyl chloride lubricant have good compatibility with polyvinyl chloride resin, can improve the internal lubrication effect, ensure that the polarity is reduced and the external lubrication effect is enhanced through hydrogen bond between molecules, realize the effect of internal and external lubrication, have the characteristics of accelerating fusion, reducing the fusion viscosity, prolonging the processing life, improving the fluidity, improving the transparency and the like, endow the hard and soft polyvinyl chloride products with excellent thermal stability and transparency through the good compatibility with the polyvinyl chloride, are safe, nontoxic and environment-friendly, have the super-additive effect and improve the comprehensive performance, and have novel formula, skillful process and good application prospect.

Detailed Description

The formula of the polyvinyl chloride lubricant comprises the following components in parts by weight:

higher alcohol fatty acid ester complex: 110-165 parts;

high-carbon alcohol: 55-105 parts of a modifier;

stearic acid monoglyceride: 35-60 parts;

modifying agent: 1-5 parts;

catalyst: 5-15 parts.

Preferably, the higher alcohol fatty acid ester complex adopts higher alcohol phthalate.

Preferably, the higher alcohol is a mixture of cetyl alcohol and stearyl alcohol, and the content ratio of the cetyl alcohol to the stearyl alcohol is 2: 5.

preferably, the modifying agent adopts sodium hypophosphite, and the catalyst adopts stannous chloride.

One embodiment of the formula of the polyvinyl chloride lubricant comprises the following components in parts by weight:

higher alcohol fatty acid ester complex: 145 parts of;

high-carbon alcohol: 76 parts of a mixture;

stearic acid monoglyceride: 52 parts of (1);

modifying agent: 2.2 parts of;

catalyst: 7.8 parts.

This preferred embodiment also functions as an auxiliary heat stabilizer, a moderate internal and external lubricant, and a melt promoter.

A process for preparing the lubricant formula of polyvinyl chloride includes such steps as preparing the lubricant,

step (A), preparing materials, namely preparing the following components in parts by weight: 110-165 parts of higher alcohol fatty acid ester compound; 55-105 parts of higher alcohol; 35-60 parts of stearic acid monoglyceride; 1-5 parts of a modifier; 5-15 parts of a catalyst; and stirring uniformly to prepare raw materials;

step (B), the uniformly stirred raw materials are put into a reaction kettle, and the temperature in the tower is controlled to be kept between 185 ℃ and 195 ℃;

wherein the temporary storage temperature of the raw materials uniformly stirred in the step (B) is kept between 50 ℃ and 60 ℃;

step (C), controlling the reaction temperature and keeping the reaction temperature between 190 ℃ and 230 ℃, and the specific process is as follows,

(C1) in the pre-stage, the temperature is linearly increased within 0.5h from 190 ℃ to 205 ℃;

(C2) in the first stage, the temperature is linearly increased within 1.5h from 205-210 ℃;

(C3) in the second stage, the temperature is linearly increased within 3 hours from 210 ℃ to 220 ℃;

(C4) in the third stage, the temperature is linearly increased within 2 hours from 220 ℃ to 230 ℃;

(C5) in the fourth stage, the temperature is kept at 230 ℃ for 2 hours;

step (D), monitoring whether the sampling acid value is less than 2mgkoh/g, if so, continuing the reaction, and if not, stopping the reaction;

and (E) cooling the solution in the reaction kettle to obtain a semi-finished product of the polyvinyl chloride lubricant, and conveying the semi-finished product to the inside of a scraping machine for processing operation, wherein the method comprises the following specific steps:

(E1) scraping the outer surface of the semi-finished product of the polyvinyl chloride lubricant;

(E2) slicing the scraped semi-finished product of the polyvinyl chloride lubricant;

(E3) monitoring the quality of the sliced semi-finished product of the polyvinyl chloride lubricant, and checking whether the acid value is qualified or not;

(E4) packing and transporting the qualified semi-finished product of the flake polyvinyl chloride lubricant;

and (F) crushing the semi-finished product of the polyvinyl chloride lubricant processed by the scraping machine, and packaging and storing the crushed finished product powder of the polyvinyl chloride lubricant.

The polyvinyl chloride lubricant prepared by the preparation process has the following specific effects:

(1) has good compatibility with the polyvinyl chloride resin, and provides internal and external lubrication by virtue of the inter-molecular hydrogen-bonding, polarity-reduction and external lubrication;

(2) the hard and soft polyvinyl chloride products have excellent thermal stability and transparency, and are safe, nontoxic and environment-friendly due to the excellent compatibility with polyvinyl chloride.

In conclusion, the formula and the preparation process of the polyvinyl chloride lubricant have the characteristics of accelerating melting, reducing the melt viscosity, prolonging the processing life, improving the fluidity, improving the transparency and the like, and also have the advantages of super-additive effect, comprehensive performance improvement, novel formula, ingenious process and good application prospect.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.