CN109867882A - It is a kind of based on the PVC plastic of modified molecular screen heat stabilizer preparation process - Google Patents
It is a kind of based on the PVC plastic of modified molecular screen heat stabilizer preparation process Download PDFInfo
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- CN109867882A CN109867882A CN201910163894.9A CN201910163894A CN109867882A CN 109867882 A CN109867882 A CN 109867882A CN 201910163894 A CN201910163894 A CN 201910163894A CN 109867882 A CN109867882 A CN 109867882A
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Abstract
Chemical technology field is related to based on the PVC plastic of modified molecular screen heat stabilizer preparation process the invention discloses a kind of, the preparation process is the following steps are included: 1) raw material for standby；2) it pre-processes；3) modification；4) material mixes；5) crushing material；6) it mediates.In order to solve the problems, such as to reduce its long-term thermal stability performance because hygroscopic using system with molecular sieve for preparing in the market for PVC plastic heat stabilizer, the present invention by 12- hydroxy stearic acid calcium, barium stearate, 4A molecular sieve, lubricant, pentaerythrite diphosphorous acid distearyl base ester, stearoyl benzoyl methane, triphenyl phosphite, soya bean fatty acid, modifying agent reasonable compatibility, there is good long-term thermal stability performance while guaranteeing the thermostable effect to PVC plastic, have a vast market foreground.
Description
Technical field
The present invention relates to chemical technology field, specifically a kind of PVC plastic heat stabilizer system based on modified molecular screen
Standby technique.
Background technique
With the continuous development of science and technology, more and more new materials appear in the different field such as building, packaging, office,
More quality services are provided for the life and work of people.Wherein, polyvinyl chloride (PVC) plastics are as a kind of with high-strength
The new material of the advantages that degree, corrosion-resistant and insulating properties, the transparency, receives the widespread love of people.
PVC plastic during the preparation process, in order to extend the service life of PVC, it usually needs be added heat stabilizer.Molecular sieve
As a kind of alumino-silicate artificial synthesized, with pore type cubic lattice, due to having the function of absorbing polar molecule,
The heated hydrogen chloride released of PVC can be absorbed in PVC process and play heat stabilization.But molecular sieve is in air
A large amount of water can be absorbed and reduce its long-term thermal stability performance by placing for a long time, need to be located in using PVC process
Reason.Therefore, it develops a kind of based on the PVC plastic of modified molecular screen heat stabilizer preparation process, becomes asking for urgent need to resolve
Topic.
Summary of the invention
The purpose of the present invention is to provide a kind of based on the PVC plastic of modified molecular screen heat stabilizer preparation process, with
Solve the problems mentioned above in the background art.
To achieve the above object, the invention provides the following technical scheme:
It is a kind of based on the PVC plastic of modified molecular screen heat stabilizer preparation process, which is characterized in that it the following steps are included:
1) 24-28 parts of 12- hydroxy stearic acid calcium, 16-24 parts of barium stearate, 4A point raw material for standby: are weighed respectively according to parts by weight
Son sieve 14-18 parts, 12-16 parts of lubricant, 8-10 parts of pentaerythrite diphosphorous acid distearyl base ester, stearoyl benzoyl methane 4-
6 parts, 4-6 parts of triphenyl phosphite, 2-4 parts of soya bean fatty acid and 0.4-0.6 parts of modifying agent, it is spare；Wherein, the modifying agent
It is mixed for silane coupling agent and stearic acid according to the ratio that weight ratio is 8-10:1；Pass through 12- hydroxy stearic acid calcium, tristearin
Sour barium, 4A molecular sieve, lubricant, pentaerythrite diphosphorous acid distearyl base ester, stearoyl benzoyl methane, phosphorous triphenyl phosphate
Ester, soya bean fatty acid, modifying agent reasonable compatibility, there is good length while guaranteeing to the thermostable effect of PVC plastic
Phase thermal stability, and reduce product price；
2) it pre-processes: 4A molecular sieve spare in step 1) being added into container at 60 DEG C and carries out vacuum drying 4h, it is dry
It is warming up to 465 DEG C under an atmosphere of hydrogen afterwards and carries out heat preservation 3h, be then cooled to room temperature, be ground to 200 mesh, material A must be pre-processed；It is logical
It crosses and 4A molecular sieve is pre-processed, effectively reduce its moisture and hydrogen bond content, be conducive to subsequent modification；
3) modification: modifying agent spare in step 1) is added into pretreatment material A obtained in step 2, then side is stirred
The protection of side maintaining nitrogen purge is mixed, while being warming up to 110 DEG C in 30min and reacting 2 hours, is cooled to room temperature and is ground to 200 mesh, obtain
Modified molecular screen B；By being modified processing to 4A molecular sieve, thermostable effect is effectively increased, while having good
Long-term thermal stability performance has good protecting effect to environment；
4) material mixes: 12- hydroxy stearic acid calcium and barium stearate spare in step 1) are sequentially added into step 3)
To modified molecular screen B in, then carry out uniformly mixed using high speed mixer, obtain mixture C；
5) crushing material: by pentaerythrite diphosphorous acid distearyl base ester and stearoyl benzoyl methane spare in step 1) point
It is not crushed to 40 mesh, then common investment carries out uniformly mixed into reaction kettle, obtains mixture D；
6) mediate: mixture C obtained in step 4) is uniformly mixed with mixture D obtained in step 5), then jointly
It is added in kneader and is sufficiently mixed at 120 DEG C uniformly, then lubricant spare in step 1), phosphorous acid are added into kneader
Triphenylmethyl methacrylate and soya bean fatty acid, mediate stirring 20min, discharging tabletting, screening, packaging to get.
As a further solution of the present invention: in step 1), the silane coupling agent is in KH560, DL171 or KH792
One kind.
As further scheme of the invention: in step 1), the lubricant is in paraffin, polyethylene wax or stearic acid
One kind.
As further scheme of the invention: in step 2, the heating rate of the heating is 5 DEG C/min；The drop
The rate of temperature fall of temperature is 3 DEG C/min.
As further scheme of the invention: in step 3), the stirring rate of the stirring is 600r/min.
As further scheme of the invention: in step 3), the purity of the nitrogen is 99.99%.
It is a kind of using the PVC being prepared based on the PVC plastic of modified molecular screen with heat stabilizer preparation process
Use heat stabilizer.
Compared with prior art, the beneficial effects of the present invention are:
There is good thermostable effect using PVC plastic prepared by the present invention heat stabilizer, the present invention is hard by 12- hydroxyl
Resin acid calcium, barium stearate, 4A molecular sieve, lubricant, pentaerythrite diphosphorous acid distearyl base ester, stearoyl benzoyl methane,
Triphenyl phosphite, soya bean fatty acid, modifying agent reasonable compatibility, have while guaranteeing to the thermostable effect of PVC plastic
There is good long-term thermal stability performance, and reduce product price, solves in the market using system with molecular sieve for preparing for PVC plastic use
Heat stabilizer reduces the problem of its long-term thermal stability performance because hygroscopic, by pre-processing to 4A molecular sieve, effectively drops
Low its moisture and hydrogen bond content, are conducive to subsequent modification；By carrying out pretreatment and modification to 4A molecular sieve,
Thermostable effect is effectively increased, while there is good long-term thermal stability performance, there is good protecting effect to environment, it can
To effectively improve the thermostable effect of PVC plastic, have a vast market foreground.
Specific embodiment
Technical solution of the present invention is described in more detail With reference to embodiment.
Embodiment 1
It is a kind of based on the PVC plastic of modified molecular screen heat stabilizer preparation process, it the following steps are included:
1) 24 parts of 12- hydroxy stearic acid calcium, 16 parts of barium stearate, 4A molecular sieve 14 raw material for standby: are weighed respectively according to parts by weight
Part, 12 parts of lubricant, 8 parts of pentaerythrite diphosphorous acid distearyl base ester, 4 parts of stearoyl benzoyl methane, triphenyl phosphite 4
Part, 2 parts of soya bean fatty acid and 0.4 part of modifying agent, it is spare；Wherein, the modifying agent be silane coupling agent and stearic acid according to
Weight ratio is that the ratio of 8:1 mixes；Pass through 12- hydroxy stearic acid calcium, barium stearate, 4A molecular sieve, lubricant, Ji Wusi
Alcohol diphosphorous acid distearyl base ester, stearoyl benzoyl methane, triphenyl phosphite, soya bean fatty acid, the reasonable of modifying agent are matched
5, there is good long-term thermal stability performance while guaranteeing the thermostable effect to PVC plastic, and reduce product valence
Lattice；The silane coupling agent is KH560；The lubricant is paraffin；
2) it pre-processes: 4A molecular sieve spare in step 1) being added into container at 60 DEG C and carries out vacuum drying 4h, it is dry
465 DEG C are warming up to the heating rate of 5 DEG C/min under an atmosphere of hydrogen afterwards and carries out heat preservation 3h, then with the cooling speed of 3 DEG C/min
Rate is cooled to room temperature, is ground to 200 mesh, must pre-process material A；By pre-processing to 4A molecular sieve, its water is effectively reduced
Point and hydrogen bond content, be conducive to subsequent modification；
3) modification: modifying agent spare in step 1) is added into pretreatment material A obtained in step 2, then side is stirred
It mixes side and persistently leads to the nitrogen protection that purity is 99.99%, while being warming up to 110 DEG C in 30min and reacting 2 hours, be cooled to room temperature
200 mesh are ground to, modified molecular screen B is obtained；The stirring rate of the stirring is 600r/min；By changing to 4A molecular sieve
Property processing, effectively increase thermostable effect, while there is good long-term thermal stability performance, to environment have good protection
Effect；
4) material mixes: 12- hydroxy stearic acid calcium and barium stearate spare in step 1) are sequentially added into step 3)
To modified molecular screen B in, then carry out uniformly mixed using high speed mixer, obtain mixture C；
5) crushing material: by pentaerythrite diphosphorous acid distearyl base ester and stearoyl benzoyl methane spare in step 1) point
It is not crushed to 40 mesh, then common investment carries out uniformly mixed into reaction kettle, obtains mixture D；
6) mediate: mixture C obtained in step 4) is uniformly mixed with mixture D obtained in step 5), then jointly
It is added in kneader and is sufficiently mixed at 120 DEG C uniformly, then lubricant spare in step 1), phosphorous acid are added into kneader
Triphenylmethyl methacrylate and soya bean fatty acid, mediate stirring 20min, discharging tabletting, screening, packaging to get.
In the present embodiment, it is a kind of using described based on the PVC plastic of modified molecular screen heat stabilizer preparation process system
Heat stabilizer for PVC obtained by standby.
Embodiment 2
It is a kind of based on the PVC plastic of modified molecular screen heat stabilizer preparation process, it the following steps are included:
1) 28 parts of 12- hydroxy stearic acid calcium, 24 parts of barium stearate, 4A molecular sieve 18 raw material for standby: are weighed respectively according to parts by weight
Part, 16 parts of lubricant, 10 parts of pentaerythrite diphosphorous acid distearyl base ester, 6 parts of stearoyl benzoyl methane, triphenyl phosphite
6 parts, 4 parts of soya bean fatty acid and 0.6 part of modifying agent, it is spare；Wherein, the modifying agent be silane coupling agent and stearic acid according to
Weight ratio is that the ratio of 10:1 mixes；The silane coupling agent is DL171；The lubricant is polyethylene wax；
2) it pre-processes: 4A molecular sieve spare in step 1) being added into container at 60 DEG C and carries out vacuum drying 4h, it is dry
465 DEG C are warming up to the heating rate of 5 DEG C/min under an atmosphere of hydrogen afterwards and carries out heat preservation 3h, then with the cooling speed of 3 DEG C/min
Rate is cooled to room temperature, is ground to 200 mesh, must pre-process material A；By pre-processing to 4A molecular sieve, its water is effectively reduced
Point and hydrogen bond content, be conducive to subsequent modification；
3) modification: modifying agent spare in step 1) is added into pretreatment material A obtained in step 2, then side is stirred
It mixes side and persistently leads to the nitrogen protection that purity is 99.99%, while being warming up to 110 DEG C in 30min and reacting 2 hours, be cooled to room temperature
200 mesh are ground to, modified molecular screen B is obtained；The stirring rate of the stirring is 600r/min；By changing to 4A molecular sieve
Property processing, effectively increase thermostable effect, while there is good long-term thermal stability performance, to environment have good protection
Effect；
4) material mixes: 12- hydroxy stearic acid calcium and barium stearate spare in step 1) are sequentially added into step 3)
To modified molecular screen B in, then carry out uniformly mixed using high speed mixer, obtain mixture C；
5) crushing material: by pentaerythrite diphosphorous acid distearyl base ester and stearoyl benzoyl methane spare in step 1) point
It is not crushed to 40 mesh, then common investment carries out uniformly mixed into reaction kettle, obtains mixture D；
6) mediate: mixture C obtained in step 4) is uniformly mixed with mixture D obtained in step 5), then jointly
It is added in kneader and is sufficiently mixed at 120 DEG C uniformly, then lubricant spare in step 1), phosphorous acid are added into kneader
Triphenylmethyl methacrylate and soya bean fatty acid, mediate stirring 20min, discharging tabletting, screening, packaging to get.
In the present embodiment, it is a kind of using described based on the PVC plastic of modified molecular screen heat stabilizer preparation process system
Heat stabilizer for PVC obtained by standby.
Embodiment 3
It is a kind of based on the PVC plastic of modified molecular screen heat stabilizer preparation process, it the following steps are included:
1) 26 parts of 12- hydroxy stearic acid calcium, 20 parts of barium stearate, 4A molecular sieve 16 raw material for standby: are weighed respectively according to parts by weight
Part, 14 parts of lubricant, 9 parts of pentaerythrite diphosphorous acid distearyl base ester, 5 parts of stearoyl benzoyl methane, triphenyl phosphite 5
Part, 3 parts of soya bean fatty acid and 0.5 part of modifying agent, it is spare；Wherein, the modifying agent be silane coupling agent and stearic acid according to
Weight ratio is that the ratio of 9:1 mixes；Pass through 12- hydroxy stearic acid calcium, barium stearate, 4A molecular sieve, lubricant, Ji Wusi
Alcohol diphosphorous acid distearyl base ester, stearoyl benzoyl methane, triphenyl phosphite, soya bean fatty acid, the reasonable of modifying agent are matched
5, there is good long-term thermal stability performance while guaranteeing the thermostable effect to PVC plastic, and reduce product valence
Lattice；The silane coupling agent is KH792；The lubricant is stearic acid；
2) it pre-processes: 4A molecular sieve spare in step 1) being added into container at 60 DEG C and carries out vacuum drying 4h, it is dry
465 DEG C are warming up to the heating rate of 5 DEG C/min under an atmosphere of hydrogen afterwards and carries out heat preservation 3h, then with the cooling speed of 3 DEG C/min
Rate is cooled to room temperature, is ground to 200 mesh, must pre-process material A；By pre-processing to 4A molecular sieve, its water is effectively reduced
Point and hydrogen bond content, be conducive to subsequent modification；
3) modification: modifying agent spare in step 1) is added into pretreatment material A obtained in step 2, then side is stirred
It mixes side and persistently leads to the nitrogen protection that purity is 99.99%, while being warming up to 110 DEG C in 30min and reacting 2 hours, be cooled to room temperature
200 mesh are ground to, modified molecular screen B is obtained；The stirring rate of the stirring is 600r/min；By changing to 4A molecular sieve
Property processing, effectively increase thermostable effect, while there is good long-term thermal stability performance, to environment have good protection
Effect；
4) material mixes: 12- hydroxy stearic acid calcium and barium stearate spare in step 1) are sequentially added into step 3)
To modified molecular screen B in, then carry out uniformly mixed using high speed mixer, obtain mixture C；
5) crushing material: by pentaerythrite diphosphorous acid distearyl base ester and stearoyl benzoyl methane spare in step 1) point
It is not crushed to 40 mesh, then common investment carries out uniformly mixed into reaction kettle, obtains mixture D；
6) mediate: mixture C obtained in step 4) is uniformly mixed with mixture D obtained in step 5), then jointly
It is added in kneader and is sufficiently mixed at 120 DEG C uniformly, then lubricant spare in step 1), phosphorous acid are added into kneader
Triphenylmethyl methacrylate and soya bean fatty acid, mediate stirring 20min, discharging tabletting, screening, packaging to get.
In the present embodiment, it is a kind of using described based on the PVC plastic of modified molecular screen heat stabilizer preparation process system
Heat stabilizer for PVC obtained by standby.
Comparative example 1
In the prior art, the brand calcium zinc heat stabilizer sold currently on the market.
Performance test
The heat stabilizer of embodiment 1-3 and comparative example 1 are detected, are specifically weight fraction by additive amount by heat stabilizer
3% preparation PVC material, the preparation method of the PVC material is adopted as the common method of the art, in the present invention no longer
Detailed description, then by above-mentioned resulting PVC material according to congo red method as defined in GB/T 2917.1-2002,180 DEG C into
Row heat stability testing, testing result are as shown in table 1.
From embodiment 1-3 with, as can be seen that compared with commercial product, the present invention passes through 12- in the data comparison of comparative example 1
Hydroxy stearic acid calcium, barium stearate, 4A molecular sieve, lubricant, pentaerythrite diphosphorous acid distearyl base ester, stearoyl benzoyl
Methane, triphenyl phosphite, soya bean fatty acid, modifying agent reasonable compatibility, can effectively improve thermostable effect, improve effect
Fruit is more than 10%, while having good long-term thermal stability performance, can effectively adsorb free HCl.
1 testing result table of table
| Group | Heat-stable time |
| Embodiment 1 | 79min |
| Embodiment 2 | 81min |
| Embodiment 3 | 85min |
| Comparative example 1 | 56min |
Present invention has the advantages that there is good thermostable effect using PVC plastic prepared by the present invention heat stabilizer, this
Invention by 12- hydroxy stearic acid calcium, barium stearate, 4A molecular sieve, lubricant, pentaerythrite diphosphorous acid distearyl base ester,
Stearoyl benzoyl methane, triphenyl phosphite, soya bean fatty acid, modifying agent reasonable compatibility, guaranteeing to the heat of PVC plastic
There is good long-term thermal stability performance while stablizing effect, and reduce product price, solve to use in the market and divide
The problem of son sieve preparation PVC plastic heat stabilizer reduces its long-term thermal stability performance because hygroscopic, by 4A molecular sieve
It is pre-processed, effectively reduces its moisture and hydrogen bond content, be conducive to subsequent modification；By being carried out to 4A molecular sieve
Pretreatment and modification, effectively increase thermostable effect, while having good long-term thermal stability performance, have to environment
Good protecting effect can effectively improve the thermostable effect of PVC plastic, have a vast market foreground.
Better embodiment of the invention is explained in detail above, but the present invention is not limited to above-mentioned embodiment party
Formula within the knowledge of one of ordinary skill in the art can also be without departing from the purpose of the present invention
Various changes can be made.
Claims (8)
1. a kind of based on the PVC plastic of modified molecular screen heat stabilizer preparation process, which is characterized in that it includes following step
It is rapid:
1) 24-28 parts of 12- hydroxy stearic acid calcium, 16-24 parts of barium stearate, 4A point raw material for standby: are weighed respectively according to parts by weight
Son sieve 14-18 parts, 12-16 parts of lubricant, 8-10 parts of pentaerythrite diphosphorous acid distearyl base ester, stearoyl benzoyl methane 4-
6 parts, 4-6 parts of triphenyl phosphite, 2-4 parts of soya bean fatty acid and 0.4-0.6 parts of modifying agent, it is spare；Wherein, the modifying agent
It is mixed for silane coupling agent and stearic acid according to the ratio that weight ratio is 8-10:1；
2) it pre-processes: 4A molecular sieve spare in step 1) being added into container at 60 DEG C and carries out vacuum drying 4h, it is dry
It is warming up to 465 DEG C under an atmosphere of hydrogen afterwards and carries out heat preservation 3h, be then cooled to room temperature, be ground to 200 mesh, material A must be pre-processed；
3) modification: modifying agent spare in step 1) is added into pretreatment material A obtained in step 2, then side is stirred
The protection of side maintaining nitrogen purge is mixed, while being warming up to 110 DEG C in 30min and reacting 2 hours, is cooled to room temperature and is ground to 200 mesh, obtain
Modified molecular screen B；
4) material mixes: 12- hydroxy stearic acid calcium and barium stearate spare in step 1) are sequentially added into step 3)
To modified molecular screen B in, then carry out uniformly mixed using high speed mixer, obtain mixture C；
5) crushing material: by pentaerythrite diphosphorous acid distearyl base ester and stearoyl benzoyl methane spare in step 1) point
It is not crushed to 40 mesh, then common investment carries out uniformly mixed into reaction kettle, obtains mixture D；
6) mediate: mixture C obtained in step 4) is uniformly mixed with mixture D obtained in step 5), then jointly
It is added in kneader and is sufficiently mixed at 120 DEG C uniformly, then lubricant spare in step 1), phosphorous acid are added into kneader
Triphenylmethyl methacrylate and soya bean fatty acid, mediate stirring 20min, discharging tabletting, screening, packaging to get.
2. according to claim 1 based on the PVC plastic of modified molecular screen heat stabilizer preparation process, feature exists
In in step 1), the silane coupling agent is one of KH560, DL171 or KH792.
3. according to claim 1 or 2 based on the PVC plastic of modified molecular screen heat stabilizer preparation process, feature
It is, in step 1), the lubricant is one of paraffin, polyethylene wax or stearic acid.
4. according to claim 3 based on the PVC plastic of modified molecular screen heat stabilizer preparation process, feature exists
In in step 2, the heating rate of the heating is 5 DEG C/min.
5. according to claim 4 based on the PVC plastic of modified molecular screen heat stabilizer preparation process, feature exists
In in step 2, the rate of temperature fall of the cooling is 3 DEG C/min.
6. according to claim 5 based on the PVC plastic of modified molecular screen heat stabilizer preparation process, feature exists
In in step 3), the stirring rate of the stirring is 600r/min.
7. according to claim 6 based on the PVC plastic of modified molecular screen heat stabilizer preparation process, feature exists
In in step 3), the purity of the nitrogen is 99.99%.
8. it is a kind of using as claimed in claim 1 to 7 based on the PVC plastic of modified molecular screen heat stabilizer preparation process
The heat stabilizer for PVC being prepared.
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