CN101735479A - Method for preparing thermal stabilizer/lubricant for polyvinyl chloride profiles - Google Patents
Method for preparing thermal stabilizer/lubricant for polyvinyl chloride profiles Download PDFInfo
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- CN101735479A CN101735479A CN200810235840A CN200810235840A CN101735479A CN 101735479 A CN101735479 A CN 101735479A CN 200810235840 A CN200810235840 A CN 200810235840A CN 200810235840 A CN200810235840 A CN 200810235840A CN 101735479 A CN101735479 A CN 101735479A
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Abstract
The invention discloses a method for preparing thermal stabilizer/lubricant for polyvinyl chloride profiles. The method comprises the following steps: firstly reacting part of stearic acid, part of salicylic acid and part of diglycol in a reactor to prepare an auxiliary agent 1; reacting another part of stearic acid, the rest of salicylic acid and the rest of diglycol in the reactor to prepare an auxiliary agent 2; heating part of yellow lead, the rest of stearic acid and paraffins to react in another reactor to prepare an intermediate; reacting the rest of yellow lead, glacial acetic acid and cyanuric acid in the reactor and grinding to prepare a synthetic material; reacting part of the prepared intermediate, the synthetic material and part of the auxiliary agent 1 to prepare a composite; heating and reacting the composite, the rest of intermediate, the rest of auxiliary agent 1, the auxiliary agent 2, bisphenol A and a brightening agent in a kneading machine; and carrying out extrusion molding.
Description
Technical field
The present invention relates to a kind of preparation method of thermal stabilizer/lubricant for polyvinyl chloride profiles.
Background technology
Polyvinyl chloride claims PVC again, its molecule is strong polar molecule, because Intermolecular Forces is bigger, thereby its softening temperature and melt temperature height, the second-order transition temperature height, therefore, generally need heating as for just making its plasticizing processing more than 150～160 ℃, so common processing temperature is between 160～210 ℃.But polyvinyl chloride resin, is easily degraded and dehydrochlorination under processing temperature to thermoae instability, and this reaction makes PVC produce the polyenoid sequence of coloured conjugated double bond, thereby causes goods variable color, embrittlement and etching apparatus, when serious processing can't be carried out.
In order to suppress the reaction of PVC because of the degraded dehydrochlorination, assurance PVC plastics are processed smoothly, must add processing aids such as thermo-stabilizer.
The used thermo-stabilizer of China PVC plastics mainly is based on lead salts at present.But monomer thermo-stabilizers such as traditional three, disalt are powdery, exist that production technique falls behind, energy consumption is big, many, the repeatedly weighing or could use after grinding of operation sequence when using; Bad dispersibility in polyvinyl chloride resin has the white point of dispersion, and the goods inner quality is wayward, consumption big, thermostability efficient is not high, processibility is general; In production and use, all there is serious poisonous lead powder dirt to fly upward, not only extremely harmful to HUMAN HEALTH, and contaminate environment.
The domestic dustless complex lead salt stabilizer of not producing since the eighties, though this stablizer has solved lead salt dust from flying problem well, but design philosophy does not break away from three traditional salt, the disalt pattern as main thermo-stabilizer yet, complete processing is by being pressed into sheet again after the multiple monomeric physical mixed, since of poor quality, of low grade, so can only be used for low grade, low-quality PVC goods.
Thermal stabilizer/lubricant for polyvinyl chloride profiles of the present invention, because main thermo-stabilizer has adopted organic lead-salt, makes stabiliser system and polyvinyl chloride resin that good dispersiveness and consistency be arranged, and has improved the processing characteristics of goods, dispersed and consistency improves, and heat-stable time is long.With commercially available similar products at home and abroad, make sample, test respectively by the GB8815-88 specified test according to equal proportioning, same technology.The result shows that thermal stabilizer/lubricant for polyvinyl chloride profiles heat-stable time of the present invention prolongs, and surpasses similar products at home and abroad.Door and window profile material intensity height, the fillet weld strength of the requirement, particularly section bar of the GB/T8814-1998 that is up to state standards fully after testing are on average more than 5000N, and the leg residualinternal stress is low.Relevant department's last 1000 hour of weathering resistance evaluation test, its intensity and aberration all show good performance.Goods UV resistant, weather resistance improve.No dust pollution in the use, easy to use, accurate measurement, labour intensity is little.The technology controlling and process wide ranges, temperature is low, and plasticizing is good, separates out and lacks, and production stability is good, but energy efficient.
Summary of the invention
For addressing the above problem, the present invention proposes a kind of preparation method of thermal stabilizer/lubricant for polyvinyl chloride profiles.
The thermal stabilizer/lubricant for polyvinyl chloride profiles of present method preparation can be strip, particulate state, powdery or profile such as laminar.
For guaranteeing to reach the designed effect of the present invention, the convenient use should prepare thermal stabilizer/lubricant for polyvinyl chloride profiles by method of the present invention:.
(1) part and part of salicylic acid, the part of diglycol that takes by weighing proportioning stearic acid total amount drops in the reactor, open and stir and heating, 10 ℃/the H of heat-up rate in the anti-device is controlled in condensation and collect the water vapor of overflowing in reactor when temperature rises to 140～150 ℃ in the question response device.When reaction about 5～6 hours, 185～190 ℃ of reactor temperatures and dry-steam stopped heating when overflowing, and it is auxiliary agent 1 that material is cooled to the discharging of filtration below 100 ℃;
(2) part and Whitfield's ointment, the glycol ether that takes by weighing proportioning stearic acid total amount drops in the reactor, and the method for (1) is made auxiliary agent 2 set by step;
(3) get the fusing of rest of stearic acid, heating paraffin after, put into reactor after filtration, drop into the part of proportioning yellow lead gradually, heating hybrid reaction 2.5～3 hours, 80～90 ℃ of temperature.Reaction is warming up to 95～100 ℃ of dischargings and makes intermediate after finishing;
(4) in reactor, put into the water of 2 times of input yellow lead of this step and cyanuric acid total amounts, be heated to 50～60 ℃, drop into the Glacial acetic acid of proportioning, the sulfuric acid that adds remaining yellow lead and proportioning gradually, add half an hour after, with the material in the reactor through colloidal mill circulation three times, be no less than 30 minutes at every turn, be creamy white back for synthetic material until material each half an hour at interval, and synthetic material is transferred in another reactor.
(5) part, step (1) gained auxiliary agent 1 and the synthetic material with step (3) gained intermediate is heated to reaction about 90 ℃ in another reactor, after material becomes the clear water sample in the question response device, reactor temperature is reduced to below 60 ℃, and it is standby to make compound material after material filtering is dewatered;
(6) with compound material, rest of intermediate, remaining auxiliary agent 1, auxiliary agent 2 reacting by heating in kneader, add vapor pressure 0.35～0.45MPa, put upper water as far as possible, add dihydroxyphenyl propane, treat that material does not have steam and emits after, add whitening agent, restir discharging after half an hour, and it is standby to be divided into strip and block.
(7) with the extrusion moulding of (6) gained material.
1. the reaction times is 5～6 hours among the preparation method according to claim 1, its step (1) and step (2), and the reaction end temperature is 185～190 ℃..
2. the hybrid reaction time is 2.5～3 hours among the preparation method according to claim 1, its step (3), 80～90 ℃ of temperature.
3. in the reaction process, material being ground circulation three times through colloidal mill among the preparation method according to claim 1, its step (4), circulated 20～30 minutes at every turn, is oyster white until synthetic material.
4. preparation method according to claim 1 reacts in its step (5) to synthetic material and intermediate and is overmolding to particulate state and water sepn.
5. temperature of reaction is 120～135 ℃ among the preparation method according to claim 1, its step (6), is terminal point with fugitive constituent≤0.5%.
6. preparation method according to claim 1, in its step (7), sheet thickness≤0.5mm. after extruding compressing tablet.
That the thermal stabilizer/lubricant for polyvinyl chloride profiles of the present invention preparation has is multi-functional, high-level efficiency, environment-friendly type, energy-saving characteristics.Mainly comprise:
(1) dispersiveness and consistency are good.Owing to make the reaction of main thermo-stabilizer lead salt and various organic additive, make stabiliser system and polyvinyl chloride resin that good dispersiveness and consistency be arranged, improved the processing characteristics of goods.
(2) heat-stable time is long.With commercially available similar products at home and abroad, make sample, test respectively by the GB8815-88 specified test according to equal proportioning, same technology.The result shows that the section bar with the inventive method preparation prolongs with the heat stabilizing lubricant heat-stable time, surpasses similar products at home and abroad.
(3) door and window profile material intensity height, the fillet weld strength of the requirement, particularly section bar of the GB/T8814-1998 that is up to state standards fully after testing are on average more than 5000N, and the leg residualinternal stress is low.
(4) production of articles has prescription and processing parameter is wide, content is big advantage, adapts to various processing unitss.
(5) goods UV resistant, weather resistance are good.Relevant department's last 1000 hour of weathering resistance evaluation test, its intensity and aberration all show good performance.
(6) combinations color and lustre is pure white, bright.
(7) no dust pollution in the use is easy to use, accurate measurement, and labour intensity is little.
(8) technology controlling and process wide ranges, temperature is low, and plasticizing is good, separates out and lacks, and production stability is good, but energy efficient.
Specific implementation method
(1) part of stearic acid, Whitfield's ointment and glycol ether are dropped in the reactor, open and stir and heating, the 10 ℃/H of heat-up rate in the anti-device is controlled in condensation and collect the water vapor of overflowing in reactor when temperature rises to 150 ℃ in the question response device.When reaction about 6 hours, 190 ℃ of reactor temperatures and dry-steam stopped heating when overflowing, and it is auxiliary agent 1 that material is cooled to the discharging of filtration below 100 ℃.
(2) take by weighing in part of stearic acid and remaining Whitfield's ointment, the rest of diglycol input reactor, the heating hybrid reaction is made auxiliary agent 2;
(3) with after the part of stearic acid in the proportioning, the heating paraffin fusing, put into reactor after filtration, open and stir, drop into the part yellow lead in the proportioning gradually, reacted 90 ℃ of temperature 3 hours.After reaction finishes, be warming up to 100 ℃ of dischargings and become intermediate, it is standby to be divided into little bulk.
(4) in reactor, put into weight of material duple water, be heated to 60 ℃, the Glacial acetic acid of proportioning in the input, the cyanuric acid that adds remaining yellow lead and proportioning gradually, after adding half an hour, the material in the reactor through colloidal mill circulation three times, is no less than 30 minutes at every turn, be creamy white the back for synthetic material until material, synthetic material is transferred in another reactor.
(5) synthetic material in another reactor is heated to about 90 ℃, adds the part intermediate of step (3) preparation, part of auxiliary 1 after material becomes the clear water sample in the question response device, is reduced to reactor temperature below 60 ℃, and is standby after material filtering is dewatered.
(6) material behind the drainage in the step (5) is dropped in the kneader, all the other intermediates, auxiliary agent 1, the auxiliary agent 2 that step (3) is got ready, join in the kneader, open stirring, use steam heating, vapor pressure 0.35～0.45MPa, put upper water as far as possible, add dihydroxyphenyl propane, treat that material does not have that steam is emitted, fugitive constituent≤0.5% be terminal point, the adding whitening agent, restir discharging after half an hour, and it is standby to be divided into strip and block.
(7) step (5) is equipped with the strip and block material after the forcing machine agent goes out to filter, compressing tablet is ground into the small thin slices shape and gets final product.
Claims (7)
1. the preparation method of a thermal stabilizer/lubricant for polyvinyl chloride profiles is characterized in that it is made up of the following step:
(1) take by weighing in part of stearic acid and part of salicylic acid, the part of diglycol input reactor, the heating hybrid reaction is made auxiliary agent 1;
(2) take by weighing in part of stearic acid and remaining Whitfield's ointment, the rest of diglycol input reactor, the heating hybrid reaction is made auxiliary agent 2;
(3) after the heating paraffin fusing with another part stearic acid, proportioning, put into reactor after filtration, drop into the part yellow lead in the proportioning gradually, the heating hybrid reaction is made intermediate;
(4) water reacting by heating in another reactor of 2 times of remaining yellow lead, Glacial acetic acid, cyanuric acid and above-mentioned three kinds of material total amounts is made synthetic material;
(5) part intermediate, step (1) gained auxiliary agent 1 and the part of step (3) gained and synthetic material are heated in another reactor make compound material;
(6) with compound material, rest of intermediate, remaining auxiliary agent 1, auxiliary agent 2, dihydroxyphenyl propane, whitening agent heats hybrid reaction in kneader even;
(7) with the extrusion moulding of (6) gained material.
2. the reaction times is 5～6 hours among the preparation method according to claim 1, its step (1) and step (2), and the reaction end temperature is 185～190 ℃.
3. the hybrid reaction time is 2.5～3 hours among the preparation method according to claim 1, its step (3), 80～90 ℃ of temperature.
4. in the reaction process, material being ground circulation three times through colloidal mill among the preparation method according to claim 1, its step (4), circulated 20～30 minutes at every turn, is oyster white until synthetic material.
5. preparation method according to claim 1 reacts in its step (5) to synthetic material and intermediate and is overmolding to particulate state and water sepn.
6. temperature of reaction is 120～135 ℃ among the preparation method according to claim 1, its step (6), is terminal point with fugitive constituent≤0.5%.
7. preparation method according to claim 1, in its step (7), sheet thickness≤0.5mm. after extruding compressing tablet.
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| CN200810235840A CN101735479A (en) | 2008-11-21 | 2008-11-21 | Method for preparing thermal stabilizer/lubricant for polyvinyl chloride profiles |
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| CN200810235840A CN101735479A (en) | 2008-11-21 | 2008-11-21 | Method for preparing thermal stabilizer/lubricant for polyvinyl chloride profiles |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102701986A (en) * | 2012-06-19 | 2012-10-03 | 芮立 | Method for preparing antioxidant for plastic or rubber processing |
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- 2008-11-21 CN CN200810235840A patent/CN101735479A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102701986A (en) * | 2012-06-19 | 2012-10-03 | 芮立 | Method for preparing antioxidant for plastic or rubber processing |
| CN102701986B (en) * | 2012-06-19 | 2014-01-29 | 芮立 | Method for preparing antioxidant for plastic or rubber processing |
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Application publication date: 20100616 |