CN111440399A - PVC paste for glove production and preparation method thereof - Google Patents
PVC paste for glove production and preparation method thereof Download PDFInfo
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- CN111440399A CN111440399A CN202010509752.6A CN202010509752A CN111440399A CN 111440399 A CN111440399 A CN 111440399A CN 202010509752 A CN202010509752 A CN 202010509752A CN 111440399 A CN111440399 A CN 111440399A
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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
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
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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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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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
- C08K2201/011—Nanostructured additives
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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
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Chemical Kinetics & Catalysis (AREA)
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- Gloves (AREA)
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Abstract
The invention belongs to the technical field of PVC resin application, and particularly relates to a PVC paste for glove production and a preparation method thereof, wherein the PVC paste for glove production comprises the following components in parts by weight: PVC paste resin: 75-80 parts; suspension method PVC resin: 20-25 parts; DOTP: 40-45 parts; epoxidized soybean oil: 20-25 parts; calcium zinc stabilizer: 1-1.5 parts; nano calcium carbonate: 20-30 parts of a solvent; titanate coupling agent: 0.4-0.6 part; nitrile rubber: 5-10 parts. The PVC gloves prepared by the PVC paste for glove production not only have excellent elasticity, flexibility, air permeability, solvent permeation resistance and high and low temperature resistance, but also have the advantage of low cost.
Description
Technical Field
The invention belongs to the technical field of PVC resin application, and particularly relates to a PVC paste for glove production and a preparation method thereof.
Background
PVC is one of the most important polymer materials today with its excellent performance and low price, and is widely used in fields such as artificial leather, wall paper, protective gloves, etc. The PVC protective gloves have the advantages of good protective effect, no allergen, low cost and the like, and are widely applied to industries such as medical care, food processing, catering, daily cleaning, printing and dyeing, laboratories, electronic product processing and the like.
In the production of PVC gloves, in order to obtain PVC gloves with higher strength, emulsion PVC resin with high polymerization degree is generally selected as a raw material, but due to the properties of the emulsion PVC resin, a plasticizer, a stabilizer and the like are generally required to be added in the processing process.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a PVC paste for glove production, so as to solve the disadvantages of the conventional PVC gloves in terms of flexibility, elasticity, air permeability, high and low temperature resistance, and solvent permeation resistance.
Another object of the present invention is to provide a process for the preparation of said PVC paste for glove production, which is simple to operate and suitable for industrial production.
In order to achieve the purpose, the invention provides the following technical scheme:
1. the invention provides a PVC paste for glove production, which comprises the following components in parts by weight:
PVC paste resin: 75-80 parts;
suspension method PVC resin: 20-25 parts;
DOTP: 40-45 parts;
epoxidized soybean oil: 20-25 parts;
calcium zinc stabilizer: 1-1.5 parts;
nano calcium carbonate: 20-30 parts of a solvent;
titanate coupling agent: 0.4-0.6 part;
nitrile rubber: 5-10 parts.
Preferably, the PVC paste resin is TPH-31 type PVC paste resin, the average polymerization degree is 1600-1700, and the B-type standard paste viscosity is 1500-3000 mPa.s. The TPH-31 type PVC paste resin is PVC paste resin with high polymerization degree, and has the characteristics of high strength, high elasticity, small compression set, weather resistance, aging resistance, fatigue resistance, wear resistance, creep resistance, low temperature resistance and the like besides the characteristics of common PVC paste resin. TPH-31 type PVC paste resin is selected, so that the produced PVC gloves have the advantages of good softness, good elasticity, excellent weather resistance, excellent wear resistance, excellent aging resistance and the like.
Preferably, the suspension-process PVC resin is SG-8 type PVC resin, and the average polymerization degree is 650-750. The SG-8 type PVC resin has the characteristics of low melting and gelation temperatures, short plasticizing time, good flowing property and the like, and can be doped into PVC paste resin, so that the paste viscosity of the PVC paste can be effectively reduced and the stability of the PVC paste can be improved on the one hand, and the consumption of the PVC paste resin can be reduced and the production cost can be reduced on the other hand.
Preferably, the nitrile rubber is a nitrile rubber with an acrylonitrile content of 20-30%.
Preferably, the nitrile rubber is nitrile rubber type P83 from goodyear corporation, usa.
2. The invention also provides a preparation method of the PVC paste for glove production, which comprises the following steps:
placing the nano calcium carbonate into an oven, controlling the temperature to be 100 ℃ and 110 ℃, and drying for 1-2 hours;
adding the dried nano calcium carbonate and DOTP into a high-speed mixer, stirring and dispersing at a high speed for 30-40 minutes, then heating to 80 ℃, adding a titanate coupling agent, continuing stirring and dispersing at a high speed for 1-1.5 hours, and then cooling to room temperature;
after the temperature reduction is finished, adding epoxidized soybean oil and a calcium-zinc stabilizer into a high-speed mixer, and stirring and dispersing at a high speed for 30-40 minutes;
after the dispersion is finished, adding PVC paste resin into a high-speed mixer, and stirring and dispersing for 30-40 minutes at a high speed;
after the dispersion is finished, adding PVC (polyvinyl chloride) by a suspension method into a high-speed mixer, and stirring and dispersing for 30-40 minutes at a high speed;
after the dispersion is finished, adding nitrile rubber into a high-speed mixer, and stirring and dispersing for 30-40 minutes at a high speed to obtain a material A;
grinding the material A for 20-30 minutes to obtain a material B;
and (3) carrying out vacuum defoaming on the material B to obtain the PVC paste for glove production.
The invention has the beneficial effects that:
1. the suspension method PVC resin is added into the PVC paste, so that on one hand, the paste viscosity of the PVC paste can be reduced, the paste viscosity aging stability of the PVC paste is improved, and the subsequent processing is facilitated; on the other hand, the use of PVC paste resin is reduced, and the production cost is reduced.
2. The PVC paste of the invention adopts an environment-friendly plasticizer DOTP, so that the product is safer and more environment-friendly.
3. The invention utilizes the comprehensive action of all the components of the PVC paste to ensure that the prepared PVC gloves have excellent elasticity, flexibility, air permeability, solvent permeation resistance and high and low temperature resistance.
Detailed Description
The present invention will now be described more fully hereinafter with reference to the accompanying specific embodiments, in which some, but not all embodiments of the invention are shown. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments disclosed herein are intended to be within the scope of the present invention.
The raw materials involved in the invention are all commercially available raw materials, and can be purchased in the market, and the performance test of the PVC gloves in the invention is carried out by adopting an industry general conventional method. The PVC paste resin is prepared by emulsion and micro-suspension methods, the particle size range of the PVC paste resin is generally 0.1-5.0 mu m, and the suspension method PVC resin is prepared by a suspension polymerization method, and the particle size of the PVC paste resin is mainly distributed to be 20-200 mu m.
The invention provides a PVC paste for glove production, which comprises the following components in parts by weight:
PVC paste resin: 75-80 parts;
suspension method PVC resin: 20-25 parts;
DOTP: 40-45 parts;
epoxidized soybean oil: 20-25 parts;
calcium zinc stabilizer: 1-1.5 parts;
nano calcium carbonate: 20-30 parts of a solvent;
titanate coupling agent: 0.4-0.6 part;
nitrile rubber: 5-10 parts.
The suspension method PVC resin is doped into the PVC paste resin to prepare the PVC paste, so that the use of the PVC paste resin can be reduced, the production cost is reduced, the paste viscosity and the paste viscosity aging stability of the PVC paste can be changed by using the suspension method PVC resin, the tensile strength, the hardness, the Vicat softening point and other properties of the PVC gloves are improved, and the suspension method PVC resin brings certain defects such as reduction of the elongation, the air permeability and other properties of the PVC gloves while bringing advantages to the PVC gloves; therefore, the nano calcium carbonate is required to be added to improve the performances of the PVC gloves such as air permeability and the like, and the calcium carbonate has a strong weakening effect on other performances of PVC, so that the titanate coupling agent is added to modify the nano calcium carbonate, thereby enhancing the positive influence brought by the nano calcium carbonate and weakening the negative influence brought by the nano calcium carbonate; meanwhile, the nitrile rubber is added to improve the tensile strength, the elongation, the low temperature resistance and other properties of the PVC gloves. The components and the parts by weight of the components of the PVC paste are determined by a large number of experiments, and the gloves prepared from the PVC paste have excellent elasticity, flexibility, air permeability, solvent permeation resistance and high and low temperature resistance through the comprehensive effect of the components and the parts by weight.
The invention also provides a preparation method of the PVC paste for glove production, which comprises the following steps:
placing the nano calcium carbonate into an oven, controlling the temperature to be 100 ℃ and 110 ℃, and drying for 1-2 hours;
adding the dried nano calcium carbonate and DOTP into a high-speed mixer, stirring and dispersing at a high speed for 30-40 minutes, then heating to 80 ℃, adding a titanate coupling agent, continuing stirring and dispersing at a high speed for 1-1.5 hours, and then cooling to room temperature;
after the temperature reduction is finished, adding epoxidized soybean oil and a calcium-zinc stabilizer into a high-speed mixer, and stirring and dispersing at a high speed for 30-40 minutes;
after the dispersion is finished, adding PVC paste resin into a high-speed mixer, and stirring and dispersing for 30-40 minutes at a high speed;
after the dispersion is finished, adding PVC (polyvinyl chloride) by a suspension method into a high-speed mixer, and stirring and dispersing for 30-40 minutes at a high speed;
after the dispersion is finished, adding nitrile rubber into a high-speed mixer, and stirring and dispersing for 30-40 minutes at a high speed to obtain a material A;
grinding the material A for 20-30 minutes to obtain a material B;
and (3) carrying out vacuum defoaming on the material B to obtain the PVC paste for glove production.
In the preparation method of the PVC paste for glove production, the plasticizer DOTP is used as the solvent for modifying the nano calcium carbonate, so that the introduction of redundant solvent and the post-treatment process of modified nano calcium carbonate are avoided, the preparation method is simpler, and the preparation method is more suitable for industrial production.
The present invention will be described below with reference to specific examples.
Example 1
A PVC paste for glove production comprises the following raw materials in parts by weight:
PVC paste resin: 75 parts of a mixture;
suspension method PVC resin: 25 parts of (1);
DOTP: 40 parts of a mixture;
epoxidized soybean oil: 20 parts of (1);
calcium zinc stabilizer: 1.0 part;
nano calcium carbonate: 20 parts of (1);
titanate coupling agent: 0.4 part;
nitrile rubber: 5 parts of the raw materials.
The PVC paste resin is TPH-31 type PVC paste resin (sold on the market), the suspension method PVC resin is SG-8 type PVC resin (sold on the market), the nitrile rubber is P83 type nitrile rubber (sold on the market) of the United states Gu-Tai corporation, the calcium zinc stabilizer is PCZ58 type calcium zinc stabilizer (sold on the market) produced by the Sanjiapo Sanyi corporation, and the titanate coupling agent is NDZ-101 type titanate coupling agent (sold on the market).
The preparation method of the PVC paste for glove production comprises the following steps:
placing the nano calcium carbonate into an oven, controlling the temperature to be 100 ℃ and 110 ℃, and drying for 1-2 hours;
adding the dried nano calcium carbonate and DOTP into a high-speed mixer, stirring and dispersing at a high speed for 30-40 minutes, then heating to 80 ℃, adding a titanate coupling agent, continuing stirring and dispersing at a high speed for 1-1.5 hours, and then cooling to room temperature;
after the temperature reduction is finished, adding epoxidized soybean oil and a calcium-zinc stabilizer into a high-speed mixer, and stirring and dispersing at a high speed for 30-40 minutes;
after the dispersion is finished, adding PVC paste resin into a high-speed mixer, and stirring and dispersing for 30-40 minutes at a high speed;
after the dispersion is finished, adding PVC (polyvinyl chloride) by a suspension method into a high-speed mixer, and stirring and dispersing for 30-40 minutes at a high speed;
after the dispersion is finished, adding nitrile rubber into a high-speed mixer, and stirring and dispersing for 30-40 minutes at a high speed to obtain a material A;
grinding the material A for 20-30 minutes to obtain a material B;
and (3) carrying out vacuum defoaming on the material B to obtain the PVC paste for producing the gloves, wherein the vacuum defoaming conditions are as follows: and (3) controlling the vacuum degree to be-0.09 MPa to-0.1 MPa under the stirring condition, and defoaming for 1-1.5 hours.
The prepared PVC paste is prepared into PVC gloves for performance measurement, and the method comprises the following steps:
preheating a hand mould to 70 ℃, then dipping the hand mould into the prepared PVC paste, dripping the hand mould for 3 minutes, completely draining the paste on the hand mould, baking the hand mould in a 200 ℃ oven for 5 minutes, and keeping the hand mould to rotate in the baking process to ensure uniform heating;
after the hand mould is cooled to 80 ℃, soaking the polyurethane slurry, baking the polyurethane slurry in a 135 ℃ oven for 2 minutes, and drying the water;
and after cooling, curling and demolding to obtain the PVC gloves, and performing performance measurement.
Example 2
In this example, the preparation method of the PVC paste for glove production and the preparation method of the PVC gloves are the same as those of example 1, except that the raw material weight components of the PVC paste are different, and in this example, the raw material weight components of the PVC paste for glove production are as follows:
PVC paste resin: 75 parts of a mixture;
suspension method PVC resin: 25 parts of (1);
DOTP: 40 parts of a mixture;
epoxidized soybean oil: 20 parts of (1);
calcium zinc stabilizer: 1.0 part;
nano calcium carbonate: 20 parts of (1);
titanate coupling agent: 0.4 part;
nitrile rubber: 10 parts.
The PVC paste resin is TPH-31 type PVC paste resin (sold on the market), the suspension method PVC resin is SG-8 type PVC resin (sold on the market), the nitrile rubber is P83 type nitrile rubber (sold on the market) of the United states Gu-Tai corporation, the calcium zinc stabilizer is PCZ58 type calcium zinc stabilizer (sold on the market) produced by the Sanjiapo Sanyi corporation, and the titanate coupling agent is NDZ-101 type titanate coupling agent (sold on the market).
Example 3
In this example, the preparation method of the PVC paste for glove production and the preparation method of the PVC gloves are the same as those of example 1, except that the raw material weight components of the PVC paste are different, and in this example, the raw material weight components of the PVC paste for glove production are as follows:
PVC paste resin: 75 parts of a mixture;
suspension method PVC resin: 25 parts of (1);
DOTP: 40 parts of a mixture;
epoxidized soybean oil: 20 parts of (1);
calcium zinc stabilizer: 1.0 part;
nano calcium carbonate: 30 parts of (1);
titanate coupling agent: 0.4 part;
nitrile rubber: 5 parts of the raw materials.
The PVC paste resin is TPH-31 type PVC paste resin (sold on the market), the suspension method PVC resin is SG-8 type PVC resin (sold on the market), the nitrile rubber is P83 type nitrile rubber (sold on the market) of the United states Gu-Tai corporation, the calcium zinc stabilizer is PCZ58 type calcium zinc stabilizer (sold on the market) produced by the Sanjiapo Sanyi corporation, and the titanate coupling agent is NDZ-101 type titanate coupling agent (sold on the market).
Example 4
In this example, the preparation method of the PVC paste for glove production and the preparation method of the PVC gloves are the same as those of example 1, except that the raw material weight components of the PVC paste are different, and in this example, the raw material weight components of the PVC paste for glove production are as follows:
PVC paste resin: 70 parts of (B);
suspension method PVC resin: 30 parts of (1);
DOTP: 40 parts of a mixture;
epoxidized soybean oil: 20 parts of (1);
calcium zinc stabilizer: 1.0 part;
nano calcium carbonate: 20 parts of (1);
titanate coupling agent: 0.4 part;
nitrile rubber: 5 parts of the raw materials.
The PVC paste resin is TPH-31 type PVC paste resin (sold on the market), the suspension method PVC resin is SG-8 type PVC resin (sold on the market), the nitrile rubber is P83 type nitrile rubber (sold on the market) of the United states Gu-Tai corporation, the calcium zinc stabilizer is PCZ58 type calcium zinc stabilizer (sold on the market) produced by the Sanjiapo Sanyi corporation, and the titanate coupling agent is NDZ-101 type titanate coupling agent (sold on the market).
Example 5
In this example, the preparation method of the PVC paste for glove production and the preparation method of the PVC gloves are the same as those of example 1, except that the raw material weight components of the PVC paste are different, and in this example, the raw material weight components of the PVC paste for glove production are as follows:
PVC paste resin: 72 parts of (1);
suspension method PVC resin: 28 parts of (1);
DOTP: 45 parts of (1);
epoxidized soybean oil: 25 parts of (1);
calcium zinc stabilizer: 1.5 parts;
nano calcium carbonate: 25 parts of (1);
titanate coupling agent: 0.6 part;
nitrile rubber: 8 parts.
The PVC paste resin is TPH-31 type PVC paste resin (sold on the market), the suspension method PVC resin is SG-8 type PVC resin (sold on the market), the nitrile rubber is P83 type nitrile rubber (sold on the market) of the United states Gu-Tai corporation, the calcium zinc stabilizer is PCZ58 type calcium zinc stabilizer (sold on the market) produced by the Sanjiapo Sanyi corporation, and the titanate coupling agent is NDZ-101 type titanate coupling agent (sold on the market).
Comparative example 1
The paste for PVC production in comparative example 1 had the following raw material components by weight:
PVC paste resin: 100 portions of
DOTP: 40 portions of
Epoxidized soybean oil: 25 portions of
Calcium zinc stabilizer: 1.5 parts of
The PVC paste resin is TPH-31 type PVC paste resin (sold in the market), and the calcium-zinc stabilizer is PCZ58 type calcium-zinc stabilizer (sold in the market) produced by Sanyi company of Singapore.
The components are added into a high-speed mixer, uniformly stirred and dispersed at a high speed, ground for 20-30 minutes, and then subjected to vacuum defoaming to prepare PVC paste, and then the PVC paste is prepared into PVC gloves for performance test according to the method in example 1.
The experimental results are as follows:
table 1: test results of examples 1 to 5 and comparative example 1
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, but rather as the intention of all modifications, equivalents, improvements, and equivalents falling within the spirit and scope of the invention.
Claims (6)
1. The PVC paste for glove production comprises the following components in parts by weight:
PVC paste resin: 75-80 parts;
suspension method PVC resin: 20-25 parts;
DOTP: 40-45 parts;
epoxidized soybean oil: 20-25 parts;
calcium zinc stabilizer: 1-1.5 parts;
nano calcium carbonate: 20-30 parts of a solvent;
titanate coupling agent: 0.4-0.6 part;
nitrile rubber: 5-10 parts.
2. PVC paste for glove production according to claim 1, characterized in that said PVC paste resin is a PVC paste resin of the TPH-31 type.
3. The PVC paste for glove production according to claim 1, characterized in that the suspension PVC resin is a type SG-8 PVC resin.
4. The PVC paste for glove production according to claim 1, wherein the nitrile rubber is a nitrile rubber with an acrylonitrile content of 20-30%.
5. PVC paste for glove production according to claim 4, characterized in that said nitrile rubber is nitrile rubber type P83 from the United states of America and stereospecies.
6. Process for the preparation of a PVC paste for glove production according to any of claims 1 to 5, comprising the following steps:
placing the nano calcium carbonate into an oven, controlling the temperature to be 100 ℃ and 110 ℃, and drying for 1-2 hours;
adding the dried nano calcium carbonate and DOTP into a high-speed mixer, stirring and dispersing at a high speed for 30-40 minutes, then heating to 80 ℃, adding a titanate coupling agent, continuing stirring and dispersing at a high speed for 1-1.5 hours, and then cooling to room temperature;
after the temperature reduction is finished, adding epoxidized soybean oil and a calcium-zinc stabilizer into a high-speed mixer, and stirring and dispersing at a high speed for 30-40 minutes;
after the dispersion is finished, adding PVC paste resin into a high-speed mixer, and stirring and dispersing for 30-40 minutes at a high speed;
after the dispersion is finished, adding PVC (polyvinyl chloride) by a suspension method into a high-speed mixer, and stirring and dispersing for 30-40 minutes at a high speed;
after the dispersion is finished, adding nitrile rubber into a high-speed mixer, and stirring and dispersing for 30-40 minutes at a high speed to obtain a material A;
grinding the material A for 20-30 minutes to obtain a material B;
and (3) carrying out vacuum defoaming on the material B to obtain the PVC paste for glove production.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112194866A (en) * | 2020-10-13 | 2021-01-08 | 安徽和佳医疗用品科技有限公司 | Anti-skid wear-resistant PVC (polyvinyl chloride) glove and preparation method thereof |
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