CN102993601A - Formula of polyvinyl chloride (PVC) foamed sheet and preparation method thereof - Google Patents
Formula of polyvinyl chloride (PVC) foamed sheet and preparation method thereof Download PDFInfo
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- CN102993601A CN102993601A CN2012104865590A CN201210486559A CN102993601A CN 102993601 A CN102993601 A CN 102993601A CN 2012104865590 A CN2012104865590 A CN 2012104865590A CN 201210486559 A CN201210486559 A CN 201210486559A CN 102993601 A CN102993601 A CN 102993601A
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Abstract
The invention discloses a formula of polyvinyl chloride (PVC) foamed sheet and a preparation method thereof. The foamed sheet comprises the following components: 100 parts of PVC, 8-15 parts of calcium carbonate, 4-5 parts of stabilizer, 0.8-1.2 parts of external lubricant, 1.0-1.5 parts of internal lubricant, 3-5 parts of acrylics (ACR) processing agent, 5-10 parts of foaming modifier, 0.2-0.5 part of initiator, 0.3-0.6 part of inorganic foaming agent and 0.5-0.8 part of organic foaming agent. The invention also discloses the method for producing the PVC foaming sheet. The components are subjected to two processes of material mixing and extrusion forming and then the required sheet is produced. After the formula and the preparation method are adopted, the production operational cycle is prolonged, the production efficiency is obviously increased and the rejection rate is reduced. Meanwhile, the foaming effect is excellent and the surface of the sheet products is even and does not need to be polished. The long-standing problem of the contraction of similar products is resolved. The surface skinning hardness and the smoothness are high and the material performance is excellent. The foamed sheet can meet the use requirements of various industries of indoor door, furniture, decorative material, construction and the like.
Description
Technical field
The present invention relates to a kind of PVC sheet material, say definitely, relate to a kind of PVC foaming plate prescription and preparation method thereof.
Background technology
The PVC foaming plate is a kind of novel plastic material of external 20 century 70s exploitation, because its unique production technology, make it have excellent performance, be widely used in the industries such as building, car and boat, furniture, decorations, ad production, exhibition label, appearance of the city environmental protection, tourism.The low foaming PVC sheet material of hard skinning is exactly the material of a kind of excellent performance wherein, in recent years, China's low foaming extruded product production quite gets along with, but scale, range of product and quality aspect are all incompatible with the developing state in China chemical building material market, the relevant prescription of extrusion foaming technique, processing condition, the density of device structure parameter and they and foaming product and the relation of performance also await further research and optimize, and mainly there is the unfairness of plate face in the PVC foaming plate that uses at present, the skinning thin thickness, poor surface smoothness, production efficiency is low, the problems such as volume recovery is low.
Summary of the invention
For deficiency of the prior art, the invention provides a kind of efficient, solve the unfairness of plate face, skinning thin thickness, poor surface smoothness, the PVC foaming plate prescription of the problem such as production efficiency is low, volume recovery is low, and the method for preparing the PVC foaming plate.
The technical scheme of technical solution problem of the present invention is:
PVC foaming plate prescription, contain following material and weight part:
Described stablizer is low plumbous one package stabilizer, and lead content is 30-35%; Described external lubricant is polyethylene wax; Described internal lubricant is dicarboxylic ester and/or the oxidized polyethlene wax that contains Fatty Alcohol(C12-C14 and C12-C18); Described ACR processing aid is acrylic polymers, and molecular weight is 200-220 ten thousand; Described foaming control agent is high molecular weight acrylic polymers, and its molecular weight is 450-480 ten thousand; Described initiator is zinc oxide; The described PVC polymerization degree is 650-800; Described inorganic foaming agent is sodium bicarbonate; Described organic blowing agent is Cellmic C 121.
The method for preparing the PVC low-foamed sheet comprises following operation:
A, mixing of materials operation: material is put into storage bin store, by automatic batching system material is put in the Hot mixer and to be mixed, then the control temperature is drained in the cold mixing machine at 110-120 ℃, and cold mixing to 40-45 ℃ enters the compound tank behind roots blower and reciprocating sieve removal foreign matter; Compound is homogenizing within mixing batch can, after homogenizing is finished, by negative pressure transportation to extruding the steel platform.
B, extrusion molding operation: pulverous compound is after extrude hopper on the line and enter forcing machine, and along with the temperature variation that occurs in constantly reach and the extrusion, material is slowly from the solid-state viscous state that is converted into, and whipping agent begins to decompose.Because the pressure in forcing machine and the mould is very high, whipping agent decomposes the gas of emitting and under high pressure dissolves in the PVC melt, after melt is extruded mould, because melt loses suddenly pressure, the gas that is dissolved in the melt is expanded foamed rapidly, at this moment enter at once the shaping cover cooling and shaping, the melt that contains whipping agent enters shaping cover whole extrudate surface is cooled off rapidly once leaving die orifice, it is to form the less hollow foaming plate of the larger and outer density of section internal density that the cavity that core rod in the while die orifice produces is riddled by the abscess of melt composition in type-approval process, and then enter water tank and further cool off, through being cut into the PVC foaming plate of certain-length behind the tractor, finished product warehouse-in after the packing.
The present invention compared with prior art, the production run cycle stretch-out, obviously enhance productivity, the rate of reducing the number of rejects and seconds, foaming effect is excellent simultaneously, and the plate product surfacing need not polishing, solve the horizontal problem of the long-standing contraction of like product, surface skining hardness and highly polished, excellent material performance can satisfy the service requirements of the every profession and trades such as indoor sleeved door, furniture, finishing material, building.
Embodiment
The present invention is described in detail below in conjunction with embodiment.
PVC of the present invention is by Qilu Petrochemical production.
Calcium carbonate of the present invention opens moral calcium industry company limited by Jiangyin and produces.
Stablizer of the present invention is produced by the bright woods sodium in Guangdong Science and Technology Co., Ltd. for low plumbous one package stabilizer.
External lubricant of the present invention is polyethylene wax, and model is G22, rather has esterification worker company limited to produce by Hong Kong section.
Internal lubricant of the present invention is dicarboxylic ester and/or the oxidized polyethlene wax that contains Fatty Alcohol(C12-C14 and C12-C18), and model is respectively G60, AC316A, and wherein G60 rather has esterification worker company limited to produce by Hong Kong section, and AC316A is produced by Honeywell Int Inc..
Initiator of the present invention is zinc oxide, and model is BA01-05 (I) type, is produced by Anqing Linghu Paint Co., Ltd..
ACR processing aid of the present invention is acrylic polymers, and model is K123, is closed by Weihai gold and thinks the production of chemical industry company limited.
Foaming control agent of the present invention is high molecular weight acrylic polymers, and model is K385, is closed by Weihai gold and thinks the production of chemical industry company limited.
Inorganic foaming agent of the present invention is sodium bicarbonate, is produced by the abundant chemical industry of upper sea light company limited.
Organic blowing agent of the present invention is Cellmic C 121, is produced by the abundant chemical industry of upper sea light company limited.
Apparent density detects according to the GB/T6343 standard, and unit is Kg/m
3
Shore hardness (D) detects according to the GB2411 standard
Bending elastic modulus detects according to the GB/T9341-2000 standard, and unit is MPa
Simple beam impact strength detects according to the GB/T1043 standard, and unit is kJ/m
2
Tensile yield strength detects according to the GB/T1040 standard, and unit is kJ/m
2
Apparent density: be under 23 ± 2 ℃ the experimental situation in temperature, with sample according to standard test specimen sample preparation requirement, the sample preparation volume is less than 100cm3, sample is made rear placement 72 hours, be under 50 ± 5% the condition in relative humidity, the weighing sample weight is accurate to 0.5%, and quality is apparent density with the ratio of volume.
Shore hardness: be under 23 ± 2 ℃ the experimental situation in temperature, sample is placed on the sample platform of testing jig, make indentor point from least 12 millimeters at sample edge, steadily and without sclerometer being pressed on the sample under the effect of regulation weight with impacting, contact 15 seconds fully from pressing plate and sample after reading immediately.
Bending elastic modulus: be under 23 ± 2 ℃ the experimental situation, sample support to be become crossbeam in temperature, make it crooked with constant speed in span center, until sample deformation reaches preset value.To the sample applied pressure, the ratio of the strain differential that its stress in bending is poor with corresponding is bending elastic modulus in experimentation in measurement.
Simple beam impact strength: be under 23 ± 2 ℃ the experimental situation in temperature, sample is placed on the pallet of simply supported beam Apparatus for Impacting at low-temp, determines sample break center and pendulum center superposition with metal finger, pendulum is arranged on 150 ° of positions, begin to impact, be recorded in the impact energy in the experimentation.The ratio of impact energy and sample residual area is simple beam impact strength.Simple beam impact strength is larger, and the notch toughness of sample is better.
Tensile yield strength: be under 23 ± 2 ℃ the experimental situation, sample to be fixed on the anchor clamps of tension impact instrument in temperature, pendulum is arranged on 150 ° of positions, begin to impact, be recorded in the impact energy in the experimentation.The ratio of impact energy and sample residual area is tensile yield strength.Tensile yield strength is larger, and the shock resistance of sample is better.
Embodiment 1:
Various components are added after by automatic gauge be mixed to 110 ℃ in the Hot mixer and expect to the cold mixing machine, to cool off, being cooled to 45 ℃ of blankings is delivered to mix in the batch can by roots blower and stores homogenizing, after 24 hours, by cutting after the plasticizing typing under the certain processing condition of forcing machine, packing.
Embodiment 2:
Various components are added after by automatic gauge be mixed to 110 ℃ in the Hot mixer and expect to the cold mixing machine, to cool off, being cooled to 45 ℃ of blankings is delivered to mix in the batch can by roots blower and stores homogenizing, after 24 hours, by cutting after the plasticizing typing under the certain processing condition of forcing machine, packing.
Embodiment 3:
Various components are added after by automatic gauge be mixed to 110 ℃ in the Hot mixer and expect to the cold mixing machine, to cool off, being cooled to 45 ℃ of blankings is delivered to mix in the batch can by roots blower and stores homogenizing, after 24 hours, by cutting after the plasticizing typing under the certain processing condition of forcing machine, packing.
Table 1 be embodiment 1-3 performance test data and with the contrast of prior art and industry standard
Table 1
The described standard of upper table is GB/T2463.2-1999 " hard polyvinyl low foamed sheet plug an outpost of the tax office method " specified standards.
As shown in table 1: embodiment 1-3 all can realize the present invention, lower, the surperficial shore hardness of its foaming density is high, material property aspect rigidity and toughness are better, all technical all obviously is better than existing technology and industry standard requirement, and has and the advantage such as produce continuously, good stability, product scrap rate are low.
Claims (9)
1. a PVC foaming plate is filled a prescription, and it is characterized in that: contain following component and each ingredients weight parts:
。
2. a kind of hard PVC hollow skinning low-foamed sheet according to claim 1 is filled a prescription, and it is characterized in that: described stablizer is low plumbous one package stabilizer, and lead content is 30-35%.
3. a kind of PVC foaming plate according to claim 1 is filled a prescription, and it is characterized in that: described external lubricant is polyethylene wax.
4. a kind of PVC foaming plate according to claim 1 is filled a prescription, and it is characterized in that: described internal lubricant is dicarboxylic ester and/or the oxidized polyethlene wax that contains Fatty Alcohol(C12-C14 and C12-C18).
5. a kind of PVC foaming plate according to claim 1 is filled a prescription, and it is characterized in that: described ACR processing aid is acrylic polymers.
6. a kind of PVC foaming plate according to claim 1 is filled a prescription, and it is characterized in that: described foaming control agent is high molecular weight acrylic polymers.
7. a kind of PVC foaming plate according to claim 1 is filled a prescription, and it is characterized in that: described initiator is zinc oxide, and described inorganic foaming agent is sodium bicarbonate, and organic blowing agent is Cellmic C 121.
8. a kind of PVC foaming plate according to claim 1 is filled a prescription, and it is characterized in that: the described PVC polymerization degree is 650-800.
9. method for preparing such as the described PVC foaming plate of claim 1-8 is characterized in that: comprise following operation:
A, mixing of materials operation: material is put into storage bin store, by automatic batching system material is put in the Hot mixer and to be mixed, the control temperature is at 110-120 ℃, then be drained in the cold mixing machine, be cooled to 40-45 ℃, behind roots blower and reciprocating sieve removal foreign matter, enter the compound tank; Compound is homogenizing within mixing batch can, by negative pressure transportation to extruding the steel platform.
B, extrusion molding operation: the compound after the homogenizing enters forcing machine from the hopper of extruding on the line, then after mould is extruded, enter cooling and shaping in the shaping cover, enter at last further cooling in the water tank, through being cut into the PVC foaming plate of desired length behind the tractor, finished product warehouse-in after the packing.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103319808A (en) * | 2013-06-24 | 2013-09-25 | 苏州新区佳合塑胶有限公司 | Hard PVC (poly vinyl chloride) plastic and preparation method thereof |
| CN103694605A (en) * | 2014-01-17 | 2014-04-02 | 江西省建筑材料工业科学研究设计院 | PVC (polyvinyl chloride) foaming aluminum-plastic building template |
| CN104277373A (en) * | 2014-09-28 | 2015-01-14 | 安徽旺岳木塑板材有限公司 | Formula for producing building template by utilizing PVC plastic |
| CN106380739A (en) * | 2016-09-08 | 2017-02-08 | 江苏旺科新材料有限公司 | PVC I-shaped steel applied to buildings and production method thereof |
| CN106380738A (en) * | 2016-09-08 | 2017-02-08 | 江苏旺科新材料有限公司 | PVC (polyvinyl chloride) home decorative sheet and preparation method thereof |
| CN106398043A (en) * | 2016-09-08 | 2017-02-15 | 江苏旺科新材料有限公司 | PVC (Polyvinyl Chloride) crusted and foamed flitch for construction and preparation method thereof |
| CN106832679A (en) * | 2017-03-09 | 2017-06-13 | 江苏云腾高新科技有限公司 | A kind of heat-resistant PVC foamed profile high and preparation method |
| CN109878050A (en) * | 2019-03-01 | 2019-06-14 | 安徽森泰木塑集团股份有限公司 | PVC foam co-extrusion ASA fiberglass reinforced technique |
| CN110804262A (en) * | 2019-11-20 | 2020-02-18 | 广州金品电子科技有限公司 | PVC (polyvinyl chloride) foaming plate and preparation method thereof |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103319808A (en) * | 2013-06-24 | 2013-09-25 | 苏州新区佳合塑胶有限公司 | Hard PVC (poly vinyl chloride) plastic and preparation method thereof |
| CN103694605A (en) * | 2014-01-17 | 2014-04-02 | 江西省建筑材料工业科学研究设计院 | PVC (polyvinyl chloride) foaming aluminum-plastic building template |
| CN103694605B (en) * | 2014-01-17 | 2016-05-18 | 江西省建筑材料工业科学研究设计院 | PVC foaming aluminum plastic building mould |
| CN104277373A (en) * | 2014-09-28 | 2015-01-14 | 安徽旺岳木塑板材有限公司 | Formula for producing building template by utilizing PVC plastic |
| CN106380739A (en) * | 2016-09-08 | 2017-02-08 | 江苏旺科新材料有限公司 | PVC I-shaped steel applied to buildings and production method thereof |
| CN106380738A (en) * | 2016-09-08 | 2017-02-08 | 江苏旺科新材料有限公司 | PVC (polyvinyl chloride) home decorative sheet and preparation method thereof |
| CN106398043A (en) * | 2016-09-08 | 2017-02-15 | 江苏旺科新材料有限公司 | PVC (Polyvinyl Chloride) crusted and foamed flitch for construction and preparation method thereof |
| CN106832679A (en) * | 2017-03-09 | 2017-06-13 | 江苏云腾高新科技有限公司 | A kind of heat-resistant PVC foamed profile high and preparation method |
| CN109878050A (en) * | 2019-03-01 | 2019-06-14 | 安徽森泰木塑集团股份有限公司 | PVC foam co-extrusion ASA fiberglass reinforced technique |
| CN109878050B (en) * | 2019-03-01 | 2020-10-02 | 安徽森泰木塑集团股份有限公司 | PVC foaming co-extrusion ASA glass fiber reinforcing process |
| CN110804262A (en) * | 2019-11-20 | 2020-02-18 | 广州金品电子科技有限公司 | PVC (polyvinyl chloride) foaming plate and preparation method thereof |
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Application publication date: 20130327 |