CN105086232A - PVC base material, manufacturing method thereof and PVC composite board - Google Patents
PVC base material, manufacturing method thereof and PVC composite board Download PDFInfo
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Abstract
The invention discloses a PVC base material, a manufacturing method thereof and a PVC composite board. The PVC base material comprises, by weight, 60-80 parts of PVC, 3-10 parts of heavy sodium carbonate and stabilizer, 0.5-2 parts of balance lubricant. 0.5-2 parts of foaming agents and 5-10 parts of foaming control agents. The PVC comprises SG-5 type PVC and SG-8 type PVC. The weight ratio of the PVC and the heavy sodium carbonate is 1 to 1-1.3. The PVC composite board comprises the PVC base material and a semi-hard PVC layer located on the surface of the base material. The PVC base material, the manufacturing method thereof and the PVC composite board have the advantages that the PVC base material has good continuous extrusion production capacity in production, and the obtained base material is continuous and stable in property, very good in tensile strength and impact strength and small in dimensional contraction rate. The PVC composite board has higher mechanical strength and longer service life compared with an existing product.
Description
Technical field
The present invention relates to a kind of sheet material and preparation method thereof, particularly relate to a kind of PVC base and preparation method thereof and PVC composite sheet.
Background technology
Sheet material is widely used in the fields such as household manufacture, construction industry and processing industry with good characteristics such as its wide material sources, of a great variety, easy processing.According to molding structure, sheet material can be roughly divided into solid wood board, clamping plate, wood mould plate, glued board and decoration panel etc.
But, there are problems in existing sheet material, such as plate moulded by wood, it is a kind of advanced composite material integrating the advantage of timber and plastics, wherein, " wood " is selected from waste and old wood, wood powder, xylon, sawdust or stalk etc., and " moulding " can be in the polymkeric substance such as polyethylene, polypropylene, polystyrene, polyvinyl chloride, be aided with several additive again, utilize modernization process produce and obtain.Nowadays, wood mould plate with its longer work-ing life, stronger plasticity-, environment protection health, realize the plurality of advantages such as resource regeneration and the dark extensive concern by domestic and international market; Wherein, be that the demand of the European & American Market of representative continues to increase with America & Canada, it is mainly used on harbour, railway, building doors and windows and indoor furniture; In Asia, the country that especially economy is comparatively flourishing, such as Japan, Wharf Construction, floor and indoor furniture adopt wood-plastic clad plate usually.But it is many containing wood powder that plate moulded by existing wood, wood powder in transport, store and there is many hidden danger in keep-process, such as than being easier to make moist, on fire, even easily produce formaldehyde pollution; Meanwhile, the material containing wood powder is stable not when extruding, and easily occurs the phenomenon of blanking difficulty and mould thickener.In addition, other sheet material also exists that performance is not good, the not easily problem such as processing and fabricating.
Therefore, above-mentioned technical barrier urgently to be resolved hurrily.
Prior art is on production floor, when especially base plate moulded by wood, because what select is that light calcium carbonate is as filler, to strengthen the hardness of sheet material, but there will be because production material is built bridge the defects such as the feed that causes is uneven, mould thickener is frequent aborning, reason of searching to the bottom is that forcing machine light calcium carbonate diameter is little, and easily attract each other between particle generation aggregate.But, in the past common water-ground limestone is not suitable for forcing machine and produces because diameter is excessive, 800-1250 order superfine heavy calcium carbonate is selected in the present invention, it is through extra-fine grinding and comminution by gas stream process, has good mobility, processing fluidity is obviously better than light calcium carbonate than light calcium carbonate.Water-ground limestone mainly plays the effect of reinforcement and filler in formula, because its Main Morphology is inorganic rigid particle, relative PVC molecular mobility and deformability little, and the calcium carbonate molecule of fine grain size can to embed in PVC molecular chain and reduces its segment deformability further, plays the effect of reinforcement.The lifting that the above mechanism of action determines along with the content of water-ground limestone is a trend of first going up and then down to substrate performance.Preferably, the content of water-ground limestone in material is 80-100 part, and through test repeatedly, in the present invention, the content of water-ground limestone is preferably 85-95 part.
Balance lubricant of the present invention comprises internal lubricant and external lubricant.Wherein, internal lubricant is mainly used in the mobility regulating material, and be beneficial to processing, it can be G60,3316A etc., and effect is similar, and the content in material is 0.6-0.8 part, more preferably 0.7-0.75 part.External lubricant is mainly convenient to extruding of material, and improving working (machining) efficiency, can be PE wax, also known as polyethylene wax, can also be 1801, its effect be similar, and both can be used alone, be used alone or as a mixture effect similar, the content in material is 0.2-0.5 part, is preferably 0.25-0.4 part.
Stablizer of the present invention is thermo-stabilizer, can prevent PVC thermal destruction, and can be such as calcium-zinc composite stabilizing agent, model be LY21, YQ102, CZ96 etc., and effect is similar.The content of stablizer in material is preferably 6-7 part.
Whipping agent of the present invention is AC whipping agent and/or sodium bicarbonate, and wherein, the content of AC whipping agent in material is 0.3-0.5 part, and the content of sodium bicarbonate in material is 0.5-0.7 part.
Foaming control agent of the present invention is for regulating foaming agent foam, promote PVC plastic, improve PVC melt temperature, prevent bubble from merging or breaking, foaming control agent can be LP-90, LS530, K400, and effect is identical, and only addition is had any different, preferably, the content of foaming control agent in material is 6-7 part.
The present invention also comprises impact modifier, and being mainly used in increases the toughness of PVC base and hardness, such as ACR, has another name called acrylate, and its content in material is 4-6 part.
Present invention also offers the preparation method of PVC base, comprise the following steps: prepare raw material by weight ratio, carry out high-speed mixing, cooling material, maturation process successively, extrude, foam and cooling and shaping, obtain PVC base.
Comprise specifically: the mixed system of (1) production material: raw material is dropped into high-speed mixer by recipe requirements, 100-110 DEG C is reached to temperature of charge according to 1000-1300rpm rotating speed mixing 10-15min, make temperature of charge be down to 30-35 DEG C by cooling mixer subsequently, after having cooled, material bagging is carried out maturation process 12-24h.(2) sheet material preparation: the production material after slaking is added forcing machine, it can be such as conical double screw extruder (machine barrel and mold temperature set are 150-170 DEG C), through foaming skinning machine and cooling calibrator cooling and shaping, finally cut into plate, be PVC base.
PVC base of the present invention arranges semi-rigid layer of PVC, just can obtain PVC composite sheet.
Semi-rigid layer of PVC of the present invention comprises: SG-5 type PVC100-150 part, water-ground limestone 350-450 part, calcium-zinc composite stabilizing agent 3-4 part and dioctyl terephthalate (DOTP) 30-40 part, all in weight percent for.Because semi-rigid layer is calendering formation, not high to calcium carbonate fineness requirement, so " water-ground limestone " particle is wherein comparatively thick, particle diameter can be about 160 orders.
The preparation method of semi-rigid layer of PVC of the present invention comprises: the mixed system of (1) production material: first according to the amount of recipe requirements by water-ground limestone, calcium-zinc composite stabilizing agent, polyvinyl chloride resin, the disposable whole input high-speed mixer of DOTP, after heat mixes temperature arrival 85-100 DEG C, blowing mixes to cold mixer, for ensureing the degree of uniformity of batch mixing, cold doing time is set as 15min, after completing, material is discharged into stock chest.(2) banburying: the material that banburying is good can be pushed into mill after banburying 6min.(3) open refining: mill temperature is set as 170-180 DEG C, open the refining time without fixing requirement, produced by mill rotating speed and rolling press and need expect that situation is determined.(4) roll: roll four roller roll spacings and be set as 1-2mm, temperature 170 DEG C, between each roller, speed ratio is as the criterion with 0.9-1.2 and adjusts, and wherein the dimensional contraction rate of speed ratio on layer of PVC has larger impact, need strictly control.(5) sizing cutting: when the egative film thickness rear haulage that meets the requirements is shaped to cooling roller, be cut into desired size.
Summary of the invention
Goal of the invention: the first object of the present invention is to provide a kind ofly possesses better mechanical property and the PVC base compared with the long life;
The second object of the present invention is to provide the preparation method of this PVC base;
The third object of the present invention is to provide a kind of PVC composition board, and this composition board utilizes PVC base prepare and obtain.
Technical scheme: PVC base of the present invention, comprises following raw material by weight: PVC60-80 part, heavy sodium carbonate, stablizer 3-10 part, balance lubricant 0.5-2 part, whipping agent 0.5-2 part, foaming control agent 5-10 part; Wherein, PVC comprises the ratio of weight and number of SG-5 type PVC and SG-8 type PVC, PVC and heavy sodium carbonate is 1:1-1.3.
The present invention, by used in combination for SG-5 type PVC and SG-8 type PVC, can improve the mechanical property of base material; Preferably, SG-5 type PVC is 25-50 part, and SG-8 type PVC is 50-25 part.Meanwhile, PVC of the present invention is preferably 70-75 part.
The heavy sodium carbonate particle diameter that the present invention adopts is 800-1250 order; Its weight part is preferably 80-100 part.
Described balance lubricant comprises internal lubricant and external lubricant.
The present invention also comprises impact modifier.
The preparation method of PVC base of the present invention, comprises the following steps: prepare raw material by weight ratio, carries out high-speed mixing, cooling material, maturation process successively, extrudes, foam and cooling and shaping, obtains PVC base.
PVC composite sheet of the present invention, comprises above-mentioned PVC base and the semi-rigid layer of PVC being positioned at substrate surface.
Beneficial effect: the present invention compared with prior art, its remarkable advantage is: PVC base of the present invention has good continuous extrusion ability aborning, gained substrate characteristics continous-stable, tensile strength, the shock strength of base material are very good, and dimensional contraction rate is less; The mechanical strength that PVC composite sheet of the present invention is higher than having compared with currently available products and longer work-ing life.
Embodiment
Below in conjunction with embodiment, technical scheme of the present invention is described further.
The invention provides a kind of PVC base, comprise following raw material by weight: PVC60-80 part, heavy sodium carbonate, stablizer 3-10 part, balance lubricant 0.5-2 part, whipping agent 0.5-2 part, foaming control agent 5-10 part; Wherein, PVC comprises the ratio of weight and number of SG-5 type PVC and SG-8 type PVC, PVC and heavy sodium carbonate is 1:1-1.3.
Polyvinyl chloride resin of the present invention comprises SG-5 type and SG-8 type; Wherein, SG-5 and SG-8 compares has higher mean polymerisation degree and viscosity, and " higher mean polymerisation degree " here means better mechanical property; But the rising material plasticizing along with the polymerization degree can become difficulty, the plasticizing rate of resin reduces, and base material foamed board of the present invention needs resin to wrap certain gas under the condition of melting, needs certain degree of plasticification; If all adopt SG-5 type resin, resin plasticizing difficulty, cause substrate material physical degradation, therefore in order to ensure that material normally plastifies, choice for use SG-5 type of the present invention and SG-8 type mixed with resin use, and can improve the thermal dimensional stability of base material with SG-5 Substitute For Partial SG-8, have lower heat shrink rate simultaneously and add warpage rate, in the present invention, the falcon groove that can improve floor that adds of SG-5 resin overlaps tensile strength, improves the work-ing life on floor.Preferably, SG-5 type PVC is 25-50 part, and SG-8 type PVC is 50-25 part.When SG-5 type content is less than SG-8 type, the base material that density is relatively lower can be obtained, and the toughness of gained base material is better, is applicable to being applied to the above flooring product of 10mm thickness; When SG-5 type content is higher than SG-8 type, gained rigidity of base material is better, and the overlap joint tensile strength of lifting floor falcon groove that can be higher, is therefore more suitable for being applied to the following flooring product of 6mm thickness.
The preparation of embodiment 1:PVC base material
Raw material: SG-5 type PVC25 part, SG-8 type PVC50 part, 1,250 90 parts, order heavy sodium carbonate, calcium-zinc composite stabilizing agent (LY21) 5 parts, internal lubricant (G60) 0.75 part, external lubricant (PE wax) 0.35 part, AC whipping agent 0.45 part, 0.6 part, sodium bicarbonate, foaming control agent (LP-90) 6 parts.
Wherein, SG-5 type PVC is purchased from safe in Anhui, SG-8 type PVC is purchased from the real China in Dezhou, water-ground limestone purchased from Jurong stars stone flour, LY21 purchased from American Honeywell, G60 is purchased from Kunshan Mai Jisen, PE wax is purchased from German BASF, AC whipping agent purchased from Kunshan Mai Jisen, sodium bicarbonate purchased from Kunshan Mai Jisen, LP-90 purchased from Shandong Rui Feng polymer.
Preparation method: raw material is dropped into high-speed mixer by above-mentioned formula, reaches 100 DEG C according to 1000rpm rotating speed mixing 10min to temperature of charge, makes temperature of charge be down to 30 DEG C subsequently, after having cooled, material bagging is carried out maturation process 12h by cooling mixer.Production material after slaking is added conical double screw extruder (machine barrel and mold temperature set are 150 DEG C), through foaming skinning machine and cooling calibrator cooling and shaping, finally cut into plate, be PVC base.
The preparation of embodiment 2:PVC base material
Raw material: SG-5 type PVC50 part, SG-8 type PVC25 part, 800 85 parts, order heavy sodium carbonate, calcium-zinc composite stabilizing agent (YQ102) 3 parts, internal lubricant (3316A) 0.6 part, external lubricant (1801) 0.2 parts, AC whipping agent 0.5 part, foaming control agent (LS530) 7 parts.
Wherein, YQ102 purchased from American Honeywell, 3316A purchased from American Honeywell, 1801 purchased from Kunshan Mai Jisen, LS530 purchased from auspicious rich polymer.
Preparation method: raw material is dropped into high-speed mixer by above-mentioned formula, reaches 110 DEG C according to 1300rpm rotating speed mixing 15min to temperature of charge, makes temperature of charge be down to 35 DEG C subsequently, after having cooled, material bagging is carried out maturation process 20h by cooling mixer.Production material after slaking is added conical double screw extruder (machine barrel and mold temperature set are 170 DEG C), through foaming skinning machine and cooling calibrator cooling and shaping, finally cut into plate, be PVC base.
The preparation of embodiment 3:PVC base material
Raw material: SG-5 type PVC35 part, SG-8 type PVC40 part, 1,000 95 parts, order heavy sodium carbonate, calcium-zinc composite stabilizing agent (CZ96) 5 parts, internal lubricant (G60) 0.8 part, external lubricant (PE wax) 0.5 part, AC whipping agent 0.3 part, 0.5 part, sodium bicarbonate, foaming control agent (K400) 6 parts.
Wherein, CZ96 purchased from American Honeywell, K400 is purchased from Kunshan Mai Jisen.
Preparation method: raw material is dropped into high-speed mixer by above-mentioned formula, reaches 105 DEG C according to 1200rpm rotating speed mixing 12min to temperature of charge, makes temperature of charge be down to 32 DEG C subsequently, after having cooled, material bagging is carried out maturation process 24h by cooling mixer.Production material after slaking is added conical double screw extruder (machine barrel and mold temperature set are 165 DEG C), through foaming skinning machine and cooling calibrator cooling and shaping, finally cut into plate, be PVC base.
PVC base performance comparison table prepared by table 1 embodiment 1-3
Embodiment 4:
Raw material: substantially the same manner as Example 1, difference is: " SG-5 type PVC25 part, SG-8 type PVC50 part " replaced with " SG-5 type PVC75 part ".
Preparation method is identical with embodiment 1.
Embodiment 5:
Raw material: substantially the same manner as Example 1, difference is: " SG-5 type PVC25 part, SG-8 type PVC50 part " replaced with " SG-8 type PVC75 part ".
Preparation method is identical with embodiment 1.
Embodiment 6:
Raw material: substantially the same manner as Example 1, difference is: " 1250 order heavy sodium carbonate " replaced with " light sodium carbonate ".
Preparation method is identical with embodiment 1.
PVC base performance comparison table prepared by table 2 embodiment 4-6
Embodiment 7:
Raw material: PVC comprises SG-5 and SG-8, and the content of SG-5 in material is less than the content of SG-8 in material; 1250 90 parts, order heavy sodium carbonate, calcium-zinc composite stabilizing agent 5 parts, internal lubricant (G60) 0.75 part, external lubricant (PE wax) 0.35 part, AC whipping agent 0.45 part, 0.6 part, sodium bicarbonate, foaming control agent (LP-90) 6 parts.
Design 8 groups of parallel tests, PVC total content is respectively 50 parts, 55 parts, 60 parts, 70 parts, 75 parts, 80 parts, 90 parts and 100 parts.
Preparation method is identical with embodiment 1.
The substrate performance contrast table that the polyvinyl chloride resin of table 3 different content is prepared as raw material
Embodiment 8:
Raw material: SG-5 type PVC25 part, SG-8 type PVC50 part, 90 parts, heavy sodium carbonate, calcium-zinc composite stabilizing agent 5 parts, internal lubricant (G60) 0.75 part, external lubricant (PE wax) 0.35 part, AC whipping agent 0.45 part, 0.6 part, sodium bicarbonate, foaming control agent (LP-90) 6 parts.
Design 8 groups of parallel tests, heavy sodium carbonate particle diameter is respectively 600 orders, 700 orders, 800 orders, 900 orders, 1000 orders, 1250 orders, 1300 orders, 1400 orders.
Preparation method is identical with embodiment 1.
The substrate performance contrast table that the heavy sodium carbonate of table 4 different-grain diameter is prepared as raw material
Embodiment 9:
Raw material: SG-5 type PVC25 part, SG-8 type PVC50 part, 1250 order heavy sodium carbonate, calcium-zinc composite stabilizing agent 5 parts, internal lubricant (G60) 0.75 part, external lubricant (PE wax) 0.35 part, AC whipping agent 0.45 part, 0.6 part, sodium bicarbonate, foaming control agent (LP-90) 6 parts.
Design 8 groups of parallel tests, heavy carbonate content is respectively 70 parts, 75 parts, 80 parts, 85 parts, 90 parts, 95 parts, 100 parts, 110 parts.
Preparation method is identical with embodiment 1.
The substrate performance contrast table that the different heavy carbonate content of table 5 is prepared as raw material
The preparation of embodiment 10: semi-rigid PVC
Raw material: SG-5 type PVC120 part, water-ground limestone 400 parts, calcium-zinc composite stabilizing agent 4 parts and dioctyl terephthalate (DOTP) 35 parts, all in weight percent for.
Preparation method: by disposable for above-mentioned material whole input high-speed mixer, when heat mix temperature arrive 90 DEG C after blowing to cold mixer mixing, be ensure the degree of uniformity of batch mixing, cold doing time is set as 15min, after completing, material is discharged into stock chest.Then start banburying, after 6min, the material that banburying is good can be pushed into mill.Then start out refining: mill temperature is set as 175 DEG C, open the refining time without fixing requirement, produced by mill rotating speed and rolling press and need expect that situation is determined.Next calendering is started: roll four roller roll spacings and be set as 2mm, temperature 170 DEG C, between each roller, speed ratio is as the criterion with 1.0 and adjusts, and wherein the dimensional contraction rate of speed ratio on layer of PVC has larger impact, need strictly control.Finally carry out sizing cutting: when the egative film thickness rear haulage that meets the requirements is shaped to cooling roller, be cut into desired size.
The preparation of embodiment 11:PVC composition board
Semi-rigid PVC prepared by embodiment 10 is fitted in substrate surface prepared by embodiment 1, be specially the semi-rigid PVC that to fit after substrate surface roller coating glue, after normal temperature pressurize 20h again through cutting, cut snap close, obtain PVC composition board, and its performance is tested, result is as table 6.
PVC composition board the performance test results prepared by table 6 embodiment 11
As table 6 is known, the PVC composite sheet that the present embodiment obtains has good mechanical property and good shrinkage: falcon groove high, the warpage of overlap joint tensile strength and heat shrink rate little.This PVC composite sheet has moderate density simultaneously, lower residual indentation degree and water-intake rate, and excellent surface abrasion resistance, scratch resistance, over-all properties is better than other like products.
Claims (9)
1. a PVC base, is characterized in that, comprises following raw material by weight: PVC60-80 part, heavy sodium carbonate, stablizer 3-10 part, balance lubricant 0.5-2 part, whipping agent 0.5-2 part, foaming control agent 5-10 part; Wherein, PVC comprises the ratio of weight and number of SG-5 type PVC and SG-8 type PVC, PVC and heavy sodium carbonate is 1:1-1.3.
2. PVC base according to claim 1, is characterized in that: described SG-5 type PVC is 25-50 part, and SG-8 type PVC is 50-25 part.
3. PVC base according to claim 1, is characterized in that: described PVC is 70-75 part.
4. PVC base according to claim 1, is characterized in that: the particle diameter of described heavy sodium carbonate is 800-1250 order.
5. PVC base according to claim 1, is characterized in that: described heavy sodium carbonate is 80-100 part.
6. PVC base according to claim 1, is characterized in that: described balance lubricant comprises internal lubricant and external lubricant.
7. PVC base according to claim 1, is characterized in that: also comprise impact modifier.
8. the preparation method of PVC base according to claim 1, is characterized in that comprising the following steps:
Prepare raw material by weight ratio, carry out high-speed mixing, cooling material, maturation process successively, extrude, foam and cooling and shaping, obtain PVC base.
9. a PVC composite sheet, is characterized in that, comprises PVC base and the semi-rigid layer of PVC being positioned at substrate surface; Wherein, the PVC base for preparing for method described in the PVC base described in any one of claim 1-7 or claim 8 of described PVC base.
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Application publication date: 20151125 Assignee: JIANGSU KENTIER WOOD Co.,Ltd. Assignor: JIANGSU RUISHENG NEW MATERIAL Co.,Ltd. Contract record no.: X2021980001791 Denomination of invention: PVC base material and its preparation method and PVC composite board Granted publication date: 20171219 License type: Common License Record date: 20210318 |