CN114395168B - Calcium-zinc composite stabilizer for EPVC and preparation method thereof - Google Patents
Calcium-zinc composite stabilizer for EPVC and preparation method thereof Download PDFInfo
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- CN114395168B CN114395168B CN202210219567.2A CN202210219567A CN114395168B CN 114395168 B CN114395168 B CN 114395168B CN 202210219567 A CN202210219567 A CN 202210219567A CN 114395168 B CN114395168 B CN 114395168B
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- IHBCFWWEZXPPLG-UHFFFAOYSA-N [Ca].[Zn] Chemical compound [Ca].[Zn] IHBCFWWEZXPPLG-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 239000006084 composite stabilizer Substances 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 238000000227 grinding Methods 0.000 claims abstract description 42
- 238000006243 chemical reaction Methods 0.000 claims abstract description 36
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 20
- -1 pentaerythritol ester Chemical class 0.000 claims abstract description 19
- NZZIMKJIVMHWJC-UHFFFAOYSA-N dibenzoylmethane Chemical compound C=1C=CC=CC=1C(=O)CC(=O)C1=CC=CC=C1 NZZIMKJIVMHWJC-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000000843 powder Substances 0.000 claims abstract description 11
- 235000021355 Stearic acid Nutrition 0.000 claims abstract description 10
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 10
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 10
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 10
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 10
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims abstract description 10
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000008117 stearic acid Substances 0.000 claims abstract description 10
- 239000011787 zinc oxide Substances 0.000 claims abstract description 10
- LRQGFQDEQPZDQC-UHFFFAOYSA-N 1-Phenyl-1,3-eicosanedione Chemical compound CCCCCCCCCCCCCCCCCC(=O)CC(=O)C1=CC=CC=C1 LRQGFQDEQPZDQC-UHFFFAOYSA-N 0.000 claims abstract description 8
- WPMYUUITDBHVQZ-UHFFFAOYSA-N 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoic acid Chemical compound CC(C)(C)C1=CC(CCC(O)=O)=CC(C(C)(C)C)=C1O WPMYUUITDBHVQZ-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000000203 mixture Substances 0.000 claims abstract description 3
- 239000003381 stabilizer Substances 0.000 claims description 10
- 238000013329 compounding Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims 1
- 238000003541 multi-stage reaction Methods 0.000 abstract description 3
- 238000001556 precipitation Methods 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 238000011056 performance test Methods 0.000 description 5
- 239000004800 polyvinyl chloride Substances 0.000 description 5
- 229920001944 Plastisol Polymers 0.000 description 4
- 238000001816 cooling Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 239000004999 plastisol Substances 0.000 description 4
- 229920000915 polyvinyl chloride Polymers 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010985 leather Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000000498 ball milling Methods 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 1
- 239000008116 calcium stearate Substances 0.000 description 1
- 235000013539 calcium stearate Nutrition 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 239000012760 heat stabilizer Substances 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000006077 pvc stabilizer Substances 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 238000013112 stability test Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003878 thermal aging Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 description 1
Classifications
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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
-
- 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
- C08K5/07—Aldehydes; Ketones
-
- 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
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
- C08K5/098—Metal salts of carboxylic acids
-
- 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
-
- 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
- C08K5/13—Phenols; Phenolates
- C08K5/134—Phenols containing ester groups
- C08K5/1345—Carboxylic esters of phenolcarboxylic acids
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention discloses a calcium-zinc composite stabilizer for EPVC and a preparation method thereof, wherein the calcium-zinc composite stabilizer for EPVC is prepared by the following steps: s1, adding 1166-1195 parts by weight of stearic acid and 81 parts by weight of zinc oxide into a mortar grinder, and controlling the temperature to grind for reaction; s2, adding 74 parts by weight of calcium hydroxide after the reaction is finished, and performing temperature control grinding reaction; s3, after the reaction is finished, 260-325 parts by weight of dibenzoyl methane, 130-195 parts by weight of stearoyl benzoyl methane, 195-260 parts by weight of pentaerythritol ester and 65-130 parts by weight of tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester are added for carrying out temperature control grinding composite reaction, and after the reaction is finished, the mixture is cooled and ground into uniform powder, and then the uniform powder is discharged to obtain the calcium-zinc composite stabilizer for EPVC. The calcium-zinc composite stabilizer for EPVC disclosed by the invention has the advantages of excellent thermal stability, compatibility, capability of being uniformly dispersed in EPVC paste, difficulty in precipitation, small influence on the viscosity of the EPVC paste and the like.
Description
Technical Field
The invention relates to the technical field of stabilizers, in particular to a calcium-zinc composite stabilizer for EPVC and a preparation method thereof.
Background
Polyvinyl chloride (PVC) is white powder with an amorphous structure, has a relative density of about 1.4, has a glass transition temperature of 77-90 ℃ and starts to decompose at about 120 ℃, and has extremely poor thermal stability. PVC is decomposed to generate hydrogen chloride at a temperature of above 100 ℃ or after long-time sunlight exposure, and is further automatically catalyzed to decompose to cause discoloration, and the physical and mechanical properties are also rapidly reduced, so that a stabilizer is generally added in practical application to improve the stability of the product to heat and light.
PVC plastic is one of five general-purpose plastics, with throughput being the leading line. PVC articles have many characteristics such as: toughness, waterproof chemical resistance, corrosion resistance, electrical insulation, weather resistance, high mechanical strength, etc., so that the PVC products have very wide application fields. Such as leather clothing, leather bags, wallets, toys, floors, tarpaulins, conveyor belts, meal mats, pipes, profiles and the like, and the products can well ensure the color and the physical properties of the products by matching the stabilizer in the modes of calendaring, coating, extrusion molding and rotary molding.
The traditional PVC stabilizer mainly comprises lead salt, metallic soap, organic tin, organic rare earth, barium, zinc, cadmium and the like. In recent years, with the enhancement of environmental awareness and the perfection of various regulations, the application of lead salt stabilizers is limited, the development and application of environmental protection stabilizers are rapidly developed, and various environmental protection type calcium-zinc composite stabilizers are already developed on the market.
The existing calcium-zinc composite stabilizer in the market has poor heat stability effect, generally has the problems of poor compatibility, easy precipitation and the like when being applied to the EPVC paste processing technology, and simultaneously, the viscosity of the paste is easily increased greatly, so that the consumption of the viscosity reducer is required to be increased additionally, and the cost is increased.
Disclosure of Invention
In view of the above, the invention aims to provide a calcium-zinc composite stabilizer for EPVC, which has good thermal stability, good compatibility, difficult precipitation and small influence on the viscosity of EPVC paste.
In order to achieve the above object, the invention provides a calcium-zinc composite stabilizer for EPVC, which comprises the following steps:
s1, adding 1166-1195 parts by weight of stearic acid and 81 parts by weight of zinc oxide into a mortar grinder, and controlling the temperature to grind for reaction;
s2, after the reaction is finished, adding 74 parts by weight of calcium hydroxide, and carrying out temperature control grinding reaction;
s3, after the reaction is finished, 260-325 parts by weight of dibenzoyl methane, 130-195 parts by weight of stearoyl benzoyl methane, 195-260 parts by weight of pentaerythritol ester and 65-130 parts by weight of tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester are added for carrying out temperature control grinding composite reaction, and after the reaction is finished, the mixture is cooled and ground into uniform powder, and then the uniform powder is discharged to obtain the calcium-zinc composite stabilizer for EPVC.
Further, in S1, the temperature-controlled grinding reaction condition is that the grinding reaction is carried out for 1-1.5h at the temperature of 60-65 ℃.
Further, in S2, the temperature-controlled grinding reaction condition is that the grinding reaction is carried out for 1-1.5h at the temperature of 60-65 ℃.
Further, in S3, the condition of the temperature-controlled grinding composite reaction is that the grinding reaction is carried out for 30-60min at the temperature of 90-95 ℃.
Of course, the preparation method of the calcium-zinc composite stabilizer for EPVC disclosed by the invention is also within the protection scope of the invention.
The beneficial effects are that: the calcium-zinc composite stabilizer for EPVC disclosed by the invention has excellent performance, excellent thermal stability and compatibility, can be uniformly dispersed in EPVC paste, is not easy to precipitate, has small influence on the viscosity of the EPVC paste, and well solves the problems that the existing calcium-zinc composite stabilizer is unsatisfactory in thermal stability effect, poor in compatibility, easy to precipitate and easy to cause great increase in viscosity of the paste when being applied to EPVC. The preparation method of the calcium-zinc composite stabilizer disclosed by the invention adopts a ball milling mode to carry out grinding reaction, has the advantages of simple technological operation, mild conditions, environment friendliness and low cost, and can be well applied to industrial production and popularization.
Detailed Description
The present invention now will be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which are obtained by a person skilled in the art based on the embodiments of the invention, fall within the scope of protection of the invention.
Example 1
S1, adding 1166 parts by weight of stearic acid and 81 parts by weight of zinc oxide into a mortar grinder, and controlling the temperature to be 60-65 ℃ for grinding reaction for 1-1.5h;
s2, adding 74 parts by weight of calcium hydroxide, and carrying out grinding reaction for 1-1.5 hours at the temperature of 60-65 ℃;
s3, adding 260 parts by weight of dibenzoyl methane, 130 parts by weight of stearoyl benzoyl methane, 195 parts by weight of pentaerythritol ester and 65 parts by weight of tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester, grinding and compounding at the temperature of 90-95 ℃ for 30-60min, cooling and grinding into uniform powder, and discharging to obtain the calcium zinc composite stabilizer for EPVC.
Example 2
S1, adding 1166 parts by weight of stearic acid and 81 parts by weight of zinc oxide into a mortar grinder, and controlling the temperature to be 60-65 ℃ for grinding reaction for 1-1.5h;
s2, adding 74 parts by weight of calcium hydroxide, and carrying out grinding reaction for 1-1.5 hours at the temperature of 60-65 ℃;
s3, adding 260 parts by weight of dibenzoyl methane, 195 parts by weight of stearoyl benzoyl methane, 195 parts by weight of pentaerythritol ester and 130 parts by weight of tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester, grinding and compounding at the temperature of 90-95 ℃ for 30-60min, cooling and grinding into uniform powder, and discharging to obtain the calcium zinc composite stabilizer for EPVC.
Example 3
S1, adding 1195 parts by weight of stearic acid and 81 parts by weight of zinc oxide into a mortar grinder, and grinding and reacting for 1-1.5 hours at the temperature of 60-65 ℃;
s2, adding 74 parts by weight of calcium hydroxide, and carrying out grinding reaction for 1-1.5 hours at the temperature of 60-65 ℃;
s3, adding 325 parts by weight of dibenzoyl methane, 195 parts by weight of stearoyl benzoyl methane, 260 parts by weight of pentaerythritol ester and 130 parts by weight of tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester, grinding and compounding for 30-60 minutes at the temperature of 90-95 ℃, cooling and grinding into uniform powder, and discharging to obtain the calcium zinc compound stabilizer for EPVC.
Example 4
S1, adding 1195 parts by weight of stearic acid and 81 parts by weight of zinc oxide into a mortar grinder, and grinding and reacting for 1-1.5 hours at the temperature of 60-65 ℃;
s2, adding 74 parts by weight of calcium hydroxide, and carrying out grinding reaction for 1-1.5 hours at the temperature of 60-65 ℃;
s3, adding 325 parts by weight of dibenzoyl methane, 130 parts by weight of stearoyl benzoyl methane, 260 parts by weight of pentaerythritol ester and 65 parts by weight of tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester, grinding and compounding for 30-60 minutes at the temperature of 90-95 ℃, cooling and grinding into uniform powder, and discharging to obtain the calcium zinc composite stabilizer for EPVC.
Comparative example 1
The performance test was performed after 50 parts by weight of calcium stearate, 50 parts by weight of zinc stearate, 25 parts by weight of dibenzoylmethane, and 20 parts by weight of pentaerythritol ester were ground and mixed uniformly.
Comparative example 2
S1, adding 1195 parts by weight of stearic acid and 81 parts by weight of zinc oxide into a mortar grinder, and grinding and reacting for 1-1.5 hours at the temperature of 60-65 ℃;
s2, adding 74 parts by weight of calcium hydroxide, and carrying out grinding reaction for 1-1.5 hours at the temperature of 60-65 ℃;
s3, adding 325 parts by weight of dibenzoylmethane and 260 parts by weight of pentaerythritol ester, and carrying out performance test after grinding and mixing uniformly.
Comparative example 3
S1, adding 1195 parts by weight of stearic acid and 81 parts by weight of zinc oxide into a mortar grinder, and grinding and reacting for 1-1.5 hours at the temperature of 60-65 ℃;
s2, adding 74 parts by weight of calcium hydroxide, and carrying out grinding reaction for 1-1.5 hours at the temperature of 60-65 ℃;
s3, adding 325 parts by weight of dibenzoyl methane, 195 parts by weight of stearoyl benzoyl methane and 260 parts by weight of pentaerythritol ester, and carrying out performance test after grinding and mixing uniformly.
Comparative example 4
S1, adding 1195 parts by weight of stearic acid and 81 parts by weight of zinc oxide into a mortar grinder, and grinding and reacting for 1-1.5 hours at the temperature of 60-65 ℃;
s2, adding 74 parts by weight of calcium hydroxide, and carrying out grinding reaction for 1-1.5 hours at the temperature of 60-65 ℃;
s3, adding 325 parts by weight of dibenzoylmethane, 260 parts by weight of pentaerythritol ester and 130 parts by weight of tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester, and carrying out performance test after grinding and mixing uniformly.
Performance testing
The calcium-zinc composite stabilizer prepared in the examples and the comparative examples was subjected to performance test as follows:
1. compatibility and dispersibility
Per EPVC (P450): 100 parts by weight of DOP:50 parts by weight: stabilizing agent: 3.0 parts by weight of EPVC plastisol was prepared, and the resultant was left at a constant temperature of (30.+ -. 1) to observe the paste resin morphology at 0, 1, 24, 48 and 72 hours, respectively.
2. Static thermal stability test
Static heat stability was tested according to GB/T2917.1-2002 under the following conditions: the formula is EPVC (P450): 100 parts by weight of DOP:50 parts by weight of a stabilizer: 3.0 parts by weight; temperature: 200 ℃.
3. Dynamic thermal aging test
Dynamic heat aging tests were performed using a Brabender rheometer, and the test conditions were as follows, in terms of heat aging time: the formula is PEPCC (P450): 100 parts by weight of DOP:50 parts by weight of a heat stabilizer: 3.0 parts by weight of an instrument: brabender rheometer, temperature: 192 ℃, rotation speed: 50r/min, the feeding amount is as follows: 60g.
4. Viscosity influencing test
The viscosity of the EPVC paste is measured by adopting a rotational viscometer, the prepared plastisol is placed for 10 minutes at constant temperature of (30+/-1) DEG C before measurement, and the viscosity of the sample is obtained by multiplying the reading of each grade by the instrument coefficient.
The preparation method of the plastisol comprises the following steps: EPVC (P450): 100 parts by weight of DOP:50 parts by weight: stabilizing agent: 3.0 parts by weight, and stirring and mixing uniformly to obtain the EPVC plastisol.
The test results are shown below:
the foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (2)
1. The preparation method of the calcium-zinc composite stabilizer for EPVC is characterized by comprising the following steps of:
s1, adding 1166-1195 parts by weight of stearic acid and 81 parts by weight of zinc oxide into a mortar grinder, and controlling the temperature to grind for reaction;
s2, adding 74 parts by weight of calcium hydroxide after the reaction is finished, and performing temperature control grinding reaction;
s3, after the reaction is finished, 260-325 parts by weight of dibenzoyl methane, 130-195 parts by weight of stearoyl benzoyl methane, 195-260 parts by weight of pentaerythritol ester and 65-130 parts by weight of tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester are added, the temperature is controlled, grinding and compounding reaction are carried out, after the reaction is finished, the mixture is cooled and ground into uniform powder, and then the uniform powder is discharged, so that the calcium-zinc compound stabilizer for EPVC is obtained;
wherein, in S1, the temperature-controlled grinding reaction condition is that the temperature is controlled to be 60-65 ℃ for grinding reaction for 1-1.5h; s2, controlling the temperature to grind the reaction condition to grind the reaction for 1 to 1.5 hours at the temperature of between 60 and 65 ℃; and S3, controlling the temperature, grinding and compounding reaction conditions to control the temperature to be 90-95 ℃ and grinding and reacting for 30-60min.
2. A calcium-zinc composite stabilizer for EPVC prepared by the method for preparing a calcium-zinc composite stabilizer for EPVC according to claim 1.
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| CN102093648A (en) * | 2010-12-10 | 2011-06-15 | 浙江海普顿化工科技有限公司 | Pasty calcium-zinc composite heat stabilizer and preparation method thereof |
| CN102993463A (en) * | 2012-07-25 | 2013-03-27 | 肇庆市森德利化工实业有限公司 | Magnesium-aluminum-zinc modified non-toxic compound stabilizing agent for PVC (Polyvinyl Chloride) pipe fitting injection molding |
| CN103374187A (en) * | 2012-04-25 | 2013-10-30 | 吴旅良 | One-kettle continuously step-by-step synthesized calcium zinc composite stabilizer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101602863A (en) * | 2009-06-22 | 2009-12-16 | 温州天盛塑料助剂有限公司 | The environmental-friendly dust-free calcium-zinc composite heat stabilizer that is used for PVC processing |
| CN102093648A (en) * | 2010-12-10 | 2011-06-15 | 浙江海普顿化工科技有限公司 | Pasty calcium-zinc composite heat stabilizer and preparation method thereof |
| CN103374187A (en) * | 2012-04-25 | 2013-10-30 | 吴旅良 | One-kettle continuously step-by-step synthesized calcium zinc composite stabilizer |
| CN102993463A (en) * | 2012-07-25 | 2013-03-27 | 肇庆市森德利化工实业有限公司 | Magnesium-aluminum-zinc modified non-toxic compound stabilizing agent for PVC (Polyvinyl Chloride) pipe fitting injection molding |
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