CN109591410A

CN109591410A - Multilayer composite sheet

Info

Publication number: CN109591410A
Application number: CN201811319164.5A
Authority: CN
Inventors: 唐道远; 唐圣卫
Original assignee: Anhui Sen Taimusu Group PLC
Current assignee: Anhui Sen Taimusu Group PLC
Priority date: 2018-11-07
Filing date: 2018-11-07
Publication date: 2019-04-09
Anticipated expiration: 2038-11-07
Also published as: CN109591410B

Abstract

The present invention relates to PVC foam plate technique fields, specifically, it is related to a kind of multilayer composite sheet, including at least two blocks of PVC foam plates, and adhesive layer, the adhesive layer is formed between the PVC foam plate, and above-mentioned PVC foam plate is set to be bonded to form the multilayer composite sheet via adhesive layer bonding effect, so, the more single PVC foam plate of multilayer composite sheet provided by the present application is compared, the nail-holding ability of multilayer composite sheet is significantly increased using the skinning cortex of superposition, so that multilayer composite sheet not only has fire prevention possessed by PVC foam plate, the performances such as sound insulation and damping, and enhance its switching performance as connector, adhesive layer between multilayer PVC foam plate not only acts as bonding effect, the adhesive layer of formation has certain elasticity, when screw passes through the adhesive layer, The junction of adhesive layer and screw can generate the opposition of an extrusion screw, to further promote the nail-holding ability of multilayer composite sheet.

Description

Multilayer composite sheet

Technical field:

The present invention relates to PVC foam plate technique fields, and in particular, to a kind of multilayer composite sheet.

Background technique:

PVC foam plate is also known as PVC expansion sheet and An Di plate, and chemical component is polyvinyl chloride (Polyvinyl Chloride), so also referred to as foamed polyvinyl chloride plate.It is widely used in car, railway carriage ceiling, cabinet sandwich layer, inside Decoration plate, exterior walls of buildings plate, interior trim plate, office, house, public place building compartment, commercial decorative frame, nothing Dirt room plate, ceiling board, screen printing, computer lettering, advertisement mark, panel, the mark industries such as plate photograph album plate and chemical industry are anti- Rotten engineering, thermoforming part, cold storage board, special prepressing reserving works, environmentally friendly formwork, sports equipment, cultivation material, beach is moisture-proof sets It applies, water-resistant material, art materials and various light partitions replace glass ceiling etc..PVC foam leaf fat paint series, to the big plate of PVC Construction is easy, adhesive force is strong, hardness is high, light resistance is good, is cut, is drilled without zigzag slight crack, performance to PVC board after spray painting Excellent, easily spraying, low cost, one-component meet ROHS environmental protection, have very well to oil paint coating PVC bathroom cabinet, PVC bathroom cabinet surface Dicoration and defencive function.In PVC foam product, the purpose of super high molecular weight polymer is added: first is that in order to promote PVC Plasticizing；Second is that the merging of bubble is prevented in order to improve the melt strength of PVC foam material, to obtain the product of even foaming； Third is that in order to guarantee that melt has good mobility, to obtain the good product of appearance.Since different foaming products produces The product of producer is different, and equipment used, technique, raw material and lubricating system are variant, therefore we have developed have difference The foaming control agent of performance, to meet the different demands of user.

Plastic foamed molding is divided into three processes: the formation of nuclei of bubbles, the expansion of nuclei of bubbles and foam solidification.For adding Add for the PVC foam sheet material of chemical foaming agent, the expansion of nuclei of bubbles plays decisive influence to the quality of foam sheet.PVC belongs to In straight chain molecule, strand is shorter, and melt strength is low, and during nuclei of bubbles is expanded into bubble, melt is not enough to envelope gas Bubble, gas, which easily overflows, is merged into bulla, reduces the product quality of foam sheet.

In the prior art, when using PVC foam plate, since the both ends of the surface of PVC foam plate have skinning, thus So that PVC foam plate possesses certain intensity, the foamed polyvinyl chloride between two skinning cortex provides for PVC foam plate Certain sound insulation, damping and support performance, but work as PVC foam plate as connector in use, between connector The problem of nail-holding ability is smaller, and there are the connectivity between connector is low, and connection does not fasten.

Summary of the invention:

The present invention overcomes the deficiencies of existing technologies, and provides a kind of multilayer composite sheet.

The technical problems to be solved by the invention are implemented with the following technical solutions: a kind of multilayer composite sheet includes at least Two blocks of PVC foam plates and adhesive layer, the adhesive layer are formed between the PVC foam plate, and via bonding Layer bonding effect makes above-mentioned PVC foam plate be bonded to form the multilayer composite sheet.

Preferably, the PVC foam plate includes PVC foam plate layer and the knot positioned at PVC foam plate layer upper and lower surfaces Cortex, the adhesive layer are coated between adjacent skinning cortex.

Preferably, the adhesive layer has the thickness of 0.1~0.5mm.

Preferably, the adhesive layer is to coat to be formed via acrylic glue.

Preferably, the PVC foam plate, by weight, including following components:

60~75 parts of polyvinyl chloride resin powder, modified 30~40 parts of wood wool, 1~2 part of stabilizer, 1~2 part of lubricant, hair 0.1~2 part of infusion；

Preferably, the stabilizer is compound lead stabilizer；The foaming agent is made of yellow foaming agent and white hair infusion, Yellow foaming agent is azodicarbonamide, azodiisobutyronitrile, nitroso group foaming agent or hydrazides foaming agent；White hair infusion is carbon The mass ratio of sour hydrogen sodium, ammonium hydrogen carbonate, ammonium carbonate or azido compound, yellow foaming agent and white hair infusion is 1:1~1:4；It is described Lubricant be stearic acid, stearate, Solsperse 2000 compound, stearic amide class, fatty acid metal soaps, polyethylene Wax, paraffin or oxidic polyethylene.

Preferably, the preparation method of the PVC skinning plate includes, after the raw material of formula ratio is mixed, using conical double ribbon Bar and three roller process equipments are processed, and screw speed is 10~25 revs/min, and processing temperature is 130~190 DEG C, screw rod oil temperature It 70~120 DEG C, 150~180 DEG C of mold temperature, 130~180 DEG C of die lip temperature, is formed and is eliminated using three roller cooling downs and opened Cutting is carried out after power to be made.

The modified wood wool is prepared via following steps:

(1) wood wool is cut into along machine direction using discarded, corner timber, the length of wood wool is 10~15mm, wood wool Cross-sectional area be 2~4mm²；

(2) wood wool that step (1) processing obtains is subjected to baking processing, the temperature of baking is 20~35 DEG C, baking time It is lower than 15% hereinafter, forming parch wood wool with the water content of wood wool；

(3) wearable elastic sol solution is prepared:

The component proportion of the wearable elastic sol solution is as follows: ethyl acrylate 15~25%, methyl methacrylate 10 ~15%, polyurethane 15~20%, partial size is the alumina particle 5~10% of 10~40um, and partial size is the oxygen of 200~400um Change alumina particles 3~8%, surplus is deionized water；

The preparation method of the wearable elastic sol solution: first by ethyl acrylate, polyurethane, methyl methacrylate is abundant It is uniformly mixed, then puts into the alumina particle of variable grain in above-mentioned solution, and at 145-160 DEG C, pressure 15-20Mpa 3~4min of lower vulcanization is to get the wearable elastic sol solution；

(4) in the wearable elastic sol solution for preparing parch wood wool investment step (3) in step (2), so that wear-resisting bullet Property sol solution is uniformly attached to the surface of parch wood wool, dries and formed the elastic gel layer of 0.1~0.5mm thickness.

Wood wool to be dried initially enters microwave drying oven, so that material is sloughed 50~60% moisture by microwave；It is described micro- The microwave frequency of wave drying box is 1100~1400 megahertzs, and wood wool self-temperature reaches 21 DEG C after microwave dehydration；After microwave dehydration Material enter drying chamber, the baking in drying chamber successively through 21~25 DEG C, 25~30 DEG C and 30~35 DEG C three different temperatures regions Roasting, total baking time is 4~6 hours.

Compared with prior art, the application has the beneficial effect that

1, the more single PVC foam plate of multilayer composite sheet provided by the present application is compared, and is significantly increased using the skinning cortex of superposition The nail-holding ability of strong multilayer composite sheet, so that multilayer composite sheet not only has fire prevention possessed by PVC foam plate, sound insulation and subtracts The performances such as shake, and its switching performance as connector is enhanced, the adhesive layer between multilayer PVC foam plate not only acts as viscous Effect is connect, the adhesive layer of formation has certain elasticity, when screw passes through the adhesive layer, the junction meeting of adhesive layer and screw The opposition of an extrusion screw is generated, to further promote the nail-holding ability of multilayer composite sheet；

2, in the application, microwave heating is transient heating, so that wood wool before entering drying chamber has just been reached certain temperature, saves Time, efficiency are improved, and microwave heating is three-dimensional heating, keeps the material inside and outside temperature into drying chamber uniform, is solved When wood wool individually enters drying chamber, the problem of internal moisture can't get out, it is ensured that the moisture content in wood wool is lower than 15%, avoids outer Wet phenomenon in dry；

3, in the application, through overbaking, treated that wood wool can be preferably in conjunction with wearable elastic sol solution, wear-resisting bullet Property sol solution can preferably infiltrate into the inside of wood wool, to enhance the binding force between wearable elastic sol solution and wood wool Degree, so that modified wood wool has certain toughness, elasticity, the PVC foam plate being prepared using modified wood wool, inside Modification wood wool be inside that is random and being evenly arranged in PVC foam plate, the innovation wood silk that any direction extends greatly mentions The high mechanical property of PVC foam plate, makes it possess better toughness, when the excessive failure of PVC foam plate stress, Its internal modification wood wool being distributed also acts as connection function, avoids PVC foam plate fragmentation, injures people and object by a crashing object；

4, in the application, during preparing modified wood wool, alumina particle that the partial size of addition is 10~40um and Partial size is the alumina particle of 200~400um, is dispersed in the elastic gel layer of modified wood wool, when screw is embedded in When to PVC foam plate, the outer surface of screw is not only to act on PVC foam plate, the internal innovation wood being distributed Density of the silk due to increasing PVC foam plate, enhances its nail-holding ability, acts on when the outer surface of screw while with modified wood wool, The principle for enhancing its nail-holding ability includes:

(1): the elastic gel layer of the outer surface of screw and modified wood wool acts on, and elastic gel layer has certain elasticity, Extrusion screw enhances its nail-holding ability；

(2): the alumina particle random card on elastic gel layer is distributed on screw surface, it is large and small different Alumina particle enables to the elastic gel at different location different for the extruding force of screw, to form large and small alternating Active force act on screw surface, to greatly enhance the nail-holding ability of PVC foam plate；

(3): when be embedded the alumina particle on screw surface it is larger by the active force of screw when, elastic gel layer can be detached from Surface so that screw outer surface formed one layer of high and low injustice face, the face of the high and low injustice can enhance and elastic gum Frictional force between body layer, to enhance its nail-holding ability；

(4): when screw penetrates modified wood wool, wood wool can give one, the screw extruding force along screw radial direction, to increase The nail-holding ability of strong PVC foam plate；

5, in the application, the elastic gel layer containing alumina particle also has the function of protecting wood wool, can be avoided wood Silk is carbonized in PVC foam plate preparation process, makes wood wool carbonization failure.

Detailed description of the invention:

Fig. 1 is schematic structural view of the invention；

Fig. 2 is the cross section view of Fig. 1；

In figure: 10~multilayer composite sheet；11~PVC foam plate；12~adhesive layer.

Specific embodiment:

In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below Specific embodiment is closed, the present invention is furture elucidated.

Embodiment 1:

As depicted in figs. 1 and 2: a kind of multilayer composite sheet, including two blocks of PVC foam plates 11 and adhesive layer 12 glue It connects layer 12 to be formed between PVC foam plate 11, and so that PVC foam plate 11 is bonded shape via 12 bonding effect of adhesive layer At multilayer composite sheet 10；PVC foam plate 11 includes PVC foam plate layer and the skinning positioned at PVC foam plate layer upper and lower surfaces Layer, adhesive layer 12 are coated between adjacent skinning cortex；Adhesive layer 12 has the thickness of 0.3mm, and adhesive layer 12 is via acrylic Glue coats to be formed.

The more single PVC foam plate of multilayer composite sheet provided by the present application is compared, and is significantly increased using the skinning cortex of superposition The nail-holding ability of multilayer composite sheet, so that multilayer composite sheet 10 not only has fire prevention, sound insulation possessed by PVC foam plate and subtracts The performances such as shake, and its switching performance as connector is enhanced, the adhesive layer 12 between multilayer PVC foam plate 11 not only rises Adhesive layer 12 to bonding effect, formation has certain elasticity, when screw passes through the adhesive layer 12, adhesive layer 12 and screw Junction can generate the opposition of an extrusion screw, to further promote the nail-holding ability of multilayer composite sheet.

Wherein, the present embodiment forms multilayer composite sheet using PVC foam plate common in the market, preparation, specifically, This comparative example uses the PVC foam plate of Shenzhen new Sino-U.S.'s ornament materials Co., Ltd production.

Embodiment 2:

As shown, the present embodiment content and the structure of embodiment 1 are essentially identical, something in common is repeated no more, difference Be in:

PVC foam plate, including following components: polyvinyl chloride resin powder 60kg, modified wood wool 30kg, stabilizer 1kg, Lubricant 1kg, foaming agent 0.1kg；

Stabilizer is compound lead stabilizer；Foaming agent is made of yellow foaming agent and white hair infusion, and yellow foaming agent is azo two Formamide, azodiisobutyronitrile, nitroso group foaming agent or hydrazides foaming agent；White hair infusion be sodium bicarbonate, ammonium hydrogen carbonate, The mass ratio of ammonium carbonate or azido compound, yellow foaming agent and white hair infusion is 1:1~1:4；Lubricant is stearic acid, stearic acid Ester, Solsperse 2000 compound, stearic amide class, fatty acid metal soaps, polyethylene wax, paraffin or oxidic polyethylene.

The preparation method of PVC skinning plate includes, and after the raw material of formula ratio is mixed, is processed using conical double-screw and three rollers Equipment is processed, screw speed be 10~25 revs/min, processing temperature be 130~190 DEG C, 70~120 DEG C of screw rod oil temperature, mould 150~180 DEG C of temperature of tool, is formed using three roller cooling downs and is cut after eliminating tension by 130~180 DEG C of die lip temperature It is made.

Modified wood wool is prepared via following steps:

(2) wood wool that step (1) processing obtains is subjected to baking processing, the temperature of baking is 20~45 DEG C, baking time It is lower than 15% hereinafter, forming parch wood wool with the water content of wood wool；

(3) wearable elastic sol solution is prepared:

Specifically, the component proportion of wearable elastic sol solution is as follows: ethyl acrylate 15~25%, methyl methacrylate 10~15%, polyurethane 15~20%, partial size is the alumina particle 5~10% of 10~40um, and partial size is 200~400um's Alumina particle 3~8%, surplus are deionized water；

The preparation method of wearable elastic sol solution: first by ethyl acrylate, polyurethane, methyl methacrylate is sufficiently mixed Uniformly, then the alumina particle of variable grain is put into above-mentioned solution, and the sulphur under 145-160 DEG C, pressure 15-20Mpa Change 3~4min to get the wearable elastic sol solution；

Embodiment 3:

The present embodiment content and 2 content of embodiment are essentially identical, and something in common no longer repeats, the difference is that:

PVC foam plate, including following components: polyvinyl chloride resin powder 67kg, modified wood wool 35kg, stabilizer 1.5kg, lubricant 1.5kg, foaming agent 1kg.

Embodiment 4

PVC foam plate, including following components: polyvinyl chloride resin powder 75kg, modified wood wool 40kg, stabilizer 2kg, Lubricant 2kg, foaming agent 2kg.

Comparative example 1

This comparative example is surveyed using PVC foam plate common in the market, and using monolithic PVC foam plate Examination, specifically, this comparative example uses the PVC foam plate of Shenzhen new Sino-U.S.'s ornament materials Co., Ltd production.

Comparative example 2

This comparative example content is identical with 3 content of embodiment, and something in common no longer repeats, the difference is that:

Modified wood wool is prepared via following steps:

(3) wearable elastic sol solution is prepared:

Specifically, the component proportion of wearable elastic sol solution is as follows: ethyl acrylate 15~25%, methyl methacrylate 10~15%, polyurethane 15~20%, partial size is the alumina particle 3~8% of 200~400um, and surplus is deionized water；

Comparative example 3

Modified wood wool is prepared via following steps:

(3) wearable elastic sol solution is prepared:

Specifically, the component proportion of wearable elastic sol solution is as follows: ethyl acrylate 15~25%, methyl methacrylate 10~15%, polyurethane 15~20%, partial size is the alumina particle 5~10% of 10~40um, and surplus is deionized water；

Comparative example 4

Modified wood wool is prepared via following steps:

(3) wearable elastic sol solution is prepared:

Specifically, the component proportion of wearable elastic sol solution is as follows: ethyl acrylate 15~25%, methyl methacrylate 10~15%, polyurethane 15~20%, surplus is deionized water；

Performance test:

To embodiment 2~3, comparative example 1~4 carries out nail-holding ability test, using GB/T14018 Method of testing nail holding power of wood It is tested, test result is as shown in table 1:

Table 1

Basic principles and main features and the features of the present invention of the invention have been shown and described above.The technology of the industry Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes Change and improvement is both fallen in the range of claimed invention.The scope of protection of present invention is by appended claims And its equivalent thereof.

Claims

1. a kind of multilayer composite sheet, which is characterized in that include at least two blocks of PVC foam plates and adhesive layer, the bonding Layer is formed between the PVC foam plate, and is bonded above-mentioned PVC foam plate to be formed via adhesive layer bonding effect The multilayer composite sheet.

2. multilayer composite sheet according to claim 1, which is characterized in that the PVC foam plate includes PVC foam plate Layer and positioned at PVC foam plate layer upper and lower surfaces skinning cortex, the adhesive layer be coated on adjacent skinning cortex between.

3. multilayer composite sheet according to claim 2, which is characterized in that the adhesive layer has the thickness of 0.1~0.5mm Degree.

4. multilayer composite sheet according to claim 3, which is characterized in that the adhesive layer is to coat shape via acrylic glue At.