CN109457685A - A kind of thermoplastic molding grating, preparation method, application and its intermediary material - Google Patents
A kind of thermoplastic molding grating, preparation method, application and its intermediary material Download PDFInfo
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- CN109457685A CN109457685A CN201811137084.8A CN201811137084A CN109457685A CN 109457685 A CN109457685 A CN 109457685A CN 201811137084 A CN201811137084 A CN 201811137084A CN 109457685 A CN109457685 A CN 109457685A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/005—Soil-conditioning by mixing with fibrous materials, filaments, open mesh or the like
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
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Abstract
本申请公开了一种热塑模塑格栅、制备方法、应用及其中间体材料，热塑模塑格栅由纵向肋、横向肋组成，所述纵向肋和横向肋相互垂直交接形成若干格栅孔，所述格栅肋包含10‑80％体积百分比的增强纤维和20‑90％体积百分比的热塑性树脂，热塑模塑格栅的制备过程包含一维线形中间体材料制备，将中间体材料填入到格栅成型模具凹槽中，加热模具使中间体材料熔融，合模，加压，排气泡，冷却定型，脱模，修整，最后得成品；本申请制备的新型热塑模塑格栅具有生产环境友好、材料可回收、绿色环保、成型效率高、可自动化生产、产品质量稳定、人工成本低、纤维含量高、格栅性能高、纤维分布方式可设计性强、形状复杂多样、树脂可选范围广的优点。
The present application discloses a thermoplastic molded grid, a preparation method, an application and an intermediate material thereof. The thermoplastic molded grid is composed of longitudinal ribs and transverse ribs, and the longitudinal ribs and transverse ribs are intersected vertically to form several grids The grid holes, the grid ribs contain 10-80% by volume of reinforcing fibers and 20-90% by volume of thermoplastic resin, and the preparation process of the thermoplastic molded grid includes the preparation of a one-dimensional linear intermediate material, and the intermediate The material is filled into the groove of the grid forming mold, the mold is heated to melt the intermediate material, the mold is closed, pressurized, air bubbles are removed, cooled and shaped, demolded, trimmed, and finally the finished product is obtained; the new thermoplastic mold prepared in this application Plastic grid has the advantages of friendly production environment, recyclable materials, green environmental protection, high molding efficiency, automatic production, stable product quality, low labor cost, high fiber content, high grid performance, strong fiber distribution pattern design, complex shape The advantages of variety and wide range of resin options.
Description
Technical field
The present invention relates to grid technical field more particularly to a kind of thermoplastic molding grating, preparation method, using and among it
Body material.
Background technique
Grid is a kind of geosynthetics, is commonly used for roadbed, road surface, culvert, the isostructural muscle material of slight slope, plays extension
The service life of roadbed prevents road surface from collapsing or cracking, keeps that ground is beautiful and tidy, the effects of preventing erosion.Mould
Mould grid, refer in particular to glass reinforced plastic (abbreviation FRP) grid also known as glass steel grating at present, be it is a kind of make reinforcing material with glass fibre,
Unsaturated polyester resin is matrix, the band being prepared by special glass fibre weaving and resin-cast integral die
There are many rectangle of regular distribution, the board-like material in rectangular space, the mechanical characteristics with the two-way same sex.It can be widely applied to stone
Workbench, equipment platform, the brill of the industries such as oil, chemical industry electronics, electric power, paper industry, printing and dyeing, plating, seafari, sewage treatment
Well platform, aisle, trench cover plate etc. are the ideal products in corrosive environment, while being also applied on civil buildings facility.
Molding grating origin and U.S. in the sixties in last century, China at the beginning of the last century 90 introduce molding lattice
Grid product and the relevant technologies.In decades, though it is domestic grid pattern, material prescription, moulding process and in terms of also exert
Power carried out multinomial improvement trial, but did not obtained relatively and have breakthrough technological achievement.
For example, on the basis of the molding grating shape and structure that tradition is only made of horizontal, longitudinal rib wall, patent CN
205777074 U disclose a kind of glass fibre reinforced plastics molded grid of remodeling for adding transverse and longitudinal ribs；205975255 U of patent CN is public
A kind of upper surface of cloth is provided with salient rib, lower surface be provided with drain groove automobile services shop glass fibre reinforced plastics molded lattice
Grid；107629476 A of patent CN discloses a kind of antistatic glass fiber reinforced modeling of high-performance color.As can be seen that about
The patent application of grid product itself has only carried out simple modifications in shape, color and function.
In production equipment, 205009616 U of patent CN discloses a kind of glass fibre reinforced plastics molded grid production equipment, improves
Easily there is twisting off problem in conventional hydraulic cylinder piston rod, and other equipment structures is without substantially changeing；105773992 A of patent CN is public
A kind of automatic glass fiber reinforced plastic molding grating ramming device of cloth replaces manual compaction row to steep by mechanical activity pressing plate and vibration
Journey, it is intended that it is low to solve glass fibre reinforced plastics molded grid quality pass rate caused by due to human factor influences, while reducing the labor of worker
The problem of fatigue resistance, raising working efficiency；106956444 A of patent CN proposes a kind of molded all-in-one machine of fiber grid, leads to
It crosses above traditional molding grating mold and automatic row's yarn feeding device, two sides addition resin infusion device, rear side addition exhaust is set
Device realizes fiber grid braiding, injection molding, compresses exhaust, heating, cooling, demoulding full process stream journey integration production；Specially
Sharp 201721044 U of CN devises a kind of molding grating one-step molding device of special-shaped angle, solves traditional molding grating angle
Inclined-plane row's yarn difficulty, casting resin overflow and special-shaped angle molding grating demould this Three Difficult Issues.
Though there is above-mentioned related application, domestic practical condition is at present: mold, production technology, material bodies
System etc. is still maintained for state when introducing decades ago from foreign countries --- and successively winding is carried out to fiber manually and is coated with, to liquid
The layer-by-layer wooden dipper of resin progress pours, manual compression exhaust is steeped, and heat up mold after being so repeated as many times, then occurs that thermosetting resin slowly
Solidification, last cooling and demolding finishing.There are following significant problems urgently to be resolved for entire production process:
(1) production environment is severe, smell weight, big to workers ' health injury, unfriendly to environment；
(2) grid manufacturing cycle is up to one hour or longer, and low efficiency, labor intensity are big；
(3) Automated water adjustment, high labor cost；
(4) worker's technical level, unstable product quality are depended on unduly；
(5) artificial lay down fibre causes fiber content to be hardly higher than 30%, grid limited capacity；
(6) resin easily flows, and causes plastic grille-like single；
(7) glass-reinforced plastic material is not recyclable or is not easy to recycle, and solid waste generates more, it is difficult to handle；
(8) resin viscosity is big, attached environmental good easy to stick, hardly possible cleaning, and production environment is dirty and messy.
Therefore it provides a kind of material is easily recycled, production environment close friend, high production efficiency, can automated production, product matter
Amount is stablized, fiber content is high, complex-shaped novel thermoplastic molding grating various, designability is strong and innovation preparation method are urgently
Problem to be solved.
Summary of the invention
In order to overcome above-mentioned deficiency, it is an object of the present invention to provide a kind of thermoplastic molding grating, which molds lattice
Grid obtain fiber content height, thermal expansion by the way that orthogonal longitudinal rib and cross rib, the raw material composition of adjustment grid rib is arranged
It matches, is weather-proof, is corrosion-resistant, heatproof, the thermoplastic molding grating that wear-resistant, designability is strong.
Second purpose of the invention is to provide the intermediary material in a kind of preparation method of thermoplastic molding grating, passes through system
Standby intermediary material further prepares thermoplastic molding grating, realizes the rapid shaping of thermoplastic molding grating, improves production effect
Rate；It can realize that molding grating kind is fine by the starting components and proportional amount, shape or structure of adjusting intermediary material simultaneously
Dimension hplc, type, distribution mode, resin formula etc. are convenient for the purpose adjusted.
Third purpose of the present invention is to provide a kind of preparation method of thermoplastic molding grating, by preparing specific intermediate
Material and the corresponding processing step of adjustment, realization is friendly with production environment, material is recyclable, environmentally protective, shaping efficiency is high,
Can automated production, stable product quality, low cost of labor the features such as thermoplastic molding grating production preparation purpose.
4th purpose of the invention is to provide a kind of application of the preparation method of thermoplastic molding grating in production profile.
To achieve the goals above, the present invention adopts the following technical scheme:
A kind of thermoplastic molding grating, is made of longitudinal rib, cross rib, and the longitudinal rib and cross rib are mutually perpendicular to handover shape
At several grate openings, the grid rib includes the reinforcing fiber of 10-80% percent by volume and the heat of 20-90% percent by volume
Plastic resin.
Preferably, reinforcing fiber percent by volume is 20-60%, thermoplastic resin volume hundred in the thermoplastic molding grating
Divide than being 40-80%.
Preferably, the fiber can be in distributing alternately, whole be uniformly distributed or any other plastic distribution form.
Preferably, the fiber is unidirectional continuous fiber reinforcement form or fabric enhanced form, preferably uni-directional continuous fiber
Enhanced form.
Preferably, the fiber is glass fibre, carbon fiber, aramid fiber, basalt fibre, high density polyethylene (HDPE) fibre
Dimension, polypropylene fibre, polyester fiber etc. be inorganic or any one or more assorted fibre or reinforcing fiber in organic fiber and
The composite fibre of resin fibre.
Preferably, the thermoplastic resin is polyethylene, polypropylene, polyvinyl chloride, nylon, ABS, polylactic acid, poly- carbonic acid
In the thermoplastic resins such as ester, polyethylene terephthalate, thermoplastic polyurethane, polyphenylene sulfide, polyether sulfone, polyether-ether-ketone
One or more mixing.
It preferably, also include color masterbatch, fire retardant, compatilizer, antioxidant, anti-UV, inorganic powder in the thermoplastic molding grating
One or more of the fillers or auxiliary agent such as body, release agent, defoaming agent.
Preferably, the thermoplastic molding grating also include lateral ribs, longitudinal reinforced rib or covering longitudinal rib and
The panel of transverse ribs.
Preferably, the transverse and longitudinal rib of the thermoplastic molding grating is not provided with pattern draft or to be provided with certain draft oblique
Degree, pattern draft are 1~15 degree.
Preferably, the length L of the thermoplastic molding grating is 1000~5000mm, and width W is 500~2000mm, height h
It is 2~15mm for 10~80mm, thickness t.
Preferably, the grate opening of the thermoplastic molding grating be square, rectangle, triangle or other geometries, open
Porosity 20%~80%, 3~150kg/m of surface density2。
Preferably, when the grid hole shape of the thermoplastic molding grating is rectangle, grid hole length a and width b be 10~
120mm。
The present invention also provides the intermediary material in a kind of thermoplastic molding grating preparation method, the intermediary material be with
Above-mentioned thermoplastic molding grating component identical or approximate one-dimensional linear composite material with proportional amount.
Inventor is put forward for the first time is combined to fiber, resin particle and various additives etc. together in advance, and preparation has one
The composite material wire rod for determining thickness and width dimensional structure directly arrives composite wire laying when preparing thermoplastic molding grating
In mold, thermoplastic molding grating is prepared by intermediary material further processing, the rapid shaping of thermoplastic molding grating is realized, mentions
High efficiency；Simultaneously molding can be realized by the starting components and proportional amount, shape or structure of adjusting intermediary material
Grid kind fiber content, type, distribution mode, resin formula etc. are convenient for the purpose adjusted；With facilitating operation, molding time
Short, fiber impregnation sufficiently, fiber distribution the advantages that facilitating design.
Preferably, the width dimensions of the intermediary material and grid mold groove similar width are preferably smaller than equal to mould
Has recess width；Its length dimension is less than the length of fiber yarn in spool；Also can be according to actual production process requirement, it will be intermediate
Body material cut into the comparable length dimension of grid mold groove length, and preferably smaller than be equal to mold groove length.
Preferably, the fiber in the intermediary material be by thermoplastic resin thorough impregnation (porosity is less than 5%) or
Non-fully impregnation state (porosity is greater than 5%).
Preferably, the cross-sectional shape of the intermediary material be round bar shape, rectangle, square, it is trapezoidal, oval or its
His shape.
Preferably, the cross sectional shape of the intermediary material for cross-section or has variable cross-section feature in overall length size
Wire rod or profile.
Preferably, the intermediary material is full composite material or the cladded type composite material with clad, the packet
The cladding form of coating is surrounding cladding, up and down cladding, left and right cladding or the other structures form with clad structure feature.
Preferably, the cladded type composite inner composite material being wrapped by and the global sections of intermediary material are
Same cross sectional shape or different cross section shape.
Preferably, the clad of the cladded type composite material is without the thermoplastic resin of reinforcing fiber or with short fibre
The thermoplastic resin of enhancing is tieed up, recipe ingredient and the recipe ingredient of resin system in the composite material being wrapped by are close, identical
Or it is different.Also the recipe ingredient different from resin system in composite material can be used according to actual needs.
The present invention also provides a kind of preparation method of thermoplastic molding grating, which prepares comprising intermediary material,
Intermediary material is filled into grill forming die groove, heating mould melts intermediary material, molds, it pressurizes, exhaust
Bubble, cooling and shaping demould, and finishing finally obtains finished product.
Preferably, described that intermediary material is filled into the laying method in grill forming die groove as according to certain
Path carries out continuous winding laying, the intermediary material for cutting fixed length carries out transverse and longitudinal direction intersection laying parallel to each other, up and down
Staggeredly intert laying or intermediary material is shaped to the two dimension for having same mesh spacing with target thermoplastic molding grating in advance
Grid is integrally successively spread in thermoplastic molding grating mold after thin layer grid.
Preferably, the mould heating-up temperature is 100~400 DEG C, preferably 150~250 DEG C.
Preferably, the moulding pressure is 0.1~20MPa, preferably 3~8MPa.Make the intermediate material of multilayer by pressurizeing
Material firmly bonds together, while reinforcing fibre further impregnates.
Preferably, the type of cooling is using one of modes such as oily cold, water cooling, air-cooled, natural cooling or a variety of groups
It closes.
Preferably, the cooling temperature is 20~150 DEG C, preferably 60~130 DEG C.
Preferably, molding grid can be also heat-treated according to actual needs after demoulding.
The invention also discloses the preparation methods of above-mentioned thermoplastic molding grating in production thermoplastic molding grating, reinforcement type thermoplastic
Molding grating, inspection well cover, other well lids, pore type, stair tread, deck, can pultrude process preparation profile (T, I, U, Π
Deng) in application.
Compared with the prior art, the invention has the following advantages:
(1) the application is by first preparing specific intermediary material and the corresponding processing step of adjustment, the heat being prepared
Modeling molding grating is friendly with production environment, material is recyclable, environmentally protective, shaping efficiency is high, can automated production, product matter
Amount is stablized, cost of labor is low, fiber content is high, grid performance is high, fiber distribution mode designability is strong, complex-shaped multiplicity,
The wide advantage of the optional range of resin.
(2) the application provides the traditionally shaped grid that the preparation method of thermoplastic molding grating is applicable not only to, and is also applicable in
It is stepped in thermoplastic molding grating and its spin-off, including reinforcement type thermoplastic molding grating, inspection well cover, other well lids, pore type, stair
Plate, deck, can pultrude process preparation profile (T, I, U, Π etc.), it is applied widely.
Detailed description of the invention
Fig. 1 be fiber distribute alternately form thermoplastic molding grating structural schematic diagram；
Fig. 2 is the structural schematic diagram for the thermoplastic molding grating that fiber is uniformly distributed form；
Fig. 3 is the structural schematic diagram of equal grids spacing thermoplastic molding grating；
Fig. 4 is the structural schematic diagram that grids spacing thermoplastic molding grating is not waited in the present embodiment one；
Fig. 5 is the structural schematic diagram that the present embodiment another kind does not wait grids spacing thermoplastic molding grating；
Fig. 6 is a kind of structural schematic diagram of the reinforced thermoplastic molding grating comprising horizontal, vertical ribs of the present embodiment；
Fig. 7 is the structural schematic diagram that the present embodiment another kind includes reinforced thermoplastic molding grating that is horizontal, indulging ribs；
Fig. 8 is the structural schematic diagram of the canopy-type thermoplastic molding grating with panel；
Fig. 9 is the intermediary material schematic diagram of cross-section size characteristic；
Figure 10 is the intermediary material schematic diagram of variable cross-section size characteristic；
Figure 11 is the structural schematic diagram of 6 kinds of intermediary materials；
Figure 12 is the preparation method flow chart of thermoplastic molding grating；
Figure 13 is the structural schematic diagram that continuous forming laying method prepares thermoplastic molding grating；
Figure 14 is the structural schematic diagram that horizontal, vertical level crossing forming laying method prepares thermoplastic molding grating；
Figure 15 is that transverse and longitudinal exists together the structural schematic diagram of a plane grid；
Figure 16 is transverse and longitudinal respectively in the structural schematic diagram of two plane level crossing type grids；
Figure 17 be transverse and longitudinal respectively above and below two planes interlude grid structural schematic diagram；
Figure 18 is the structural schematic diagram that thermoplastic molding grating is prepared using grid entirety forming laying method.
Wherein, 10, composite material；11, thermoplastic resin clad；101, fibre single thread；102, thermoplastic resin.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
Present invention will be further explained below with reference to the attached drawings and examples, in order to the understanding of technical staff of the same trade:
Embodiment 1
A kind of thermoplastic molding grating, is made of longitudinal rib, cross rib, and the longitudinal rib and cross rib are mutually perpendicular to handover shape
At several grate openings, the grid rib ingredient includes: percent by volume is the reinforcing fiber and thermoplastic resin of 3:7.
Embodiment as one preferred, the fiber can be in distribute alternately (as shown in Figure 1), be integrally uniformly distributed
(as shown in Figure 2) or any other plastic distribution form.
Embodiment as one preferred, the shape of the thermoplastic molding grating can be only comprising cross rib and longitudinal rib
And wait the traditional thermoplastic molding grating (as shown in Figure 3) of grids spacing, only between the grids such as not comprising cross rib and longitudinal rib
It is molded away from thermoplastic molding grating (as shown in Figure 4, Figure 5), comprising the reinforced thermoplastic of lateral ribs and (or) longitudinal reinforced rib
Grid (as shown in Figure 6, Figure 7), the canopy-type thermoplastic molding grating (as shown in Figure 8) with panel.
Embodiment as one preferred, the fiber be unidirectional continuous fiber reinforcement form or fabric enhanced form, it is excellent
Menu is to continuous fiber reinforcement form.
Embodiment as one preferred, the fiber are glass fibre, carbon fiber, aramid fiber, basalt fibre, height
Density polyethylene fibres, polypropylene fibre, polyester fiber etc. be inorganic or organic fiber in any one or more assorted fibre
Or the composite fibre of reinforcing fiber and resin fibre.
Embodiment as one preferred, the thermoplastic resin be polyethylene, polypropylene, polyvinyl chloride, nylon, ABS,
Polylactic acid, polycarbonate, polyethylene terephthalate, thermoplastic polyurethane, polyphenylene sulfide, polyether sulfone, polyether-ether-ketone etc.
The mixing of one or more of thermoplastic resin.
Embodiment as one preferred also includes color masterbatch, fire retardant, compatilizer, antioxygen in the thermoplastic molding grating
One or more of the fillers or auxiliary agent such as agent, anti-UV, inorganic particle, release agent, defoaming agent.
The transverse and longitudinal rib of embodiment as one preferred, the thermoplastic molding grating is not provided with pattern draft or is provided with
Certain pattern draft, pattern draft are 1~15 degree.
Embodiment as one preferred, the length L of the thermoplastic molding grating are 1000~5000mm, and width W is 500
~2000mm, height h are 10~80mm, and thickness t is 2~15mm.
Embodiment as one preferred, the grate opening of the thermoplastic molding grating is square, rectangle, triangle or its
His geometry, percent opening 20%~80%, 3~150kg/m of surface density2。
Embodiment as one preferred, when the grid hole shape of the thermoplastic molding grating is rectangle, grid hole length a
It is 10~120mm with width b.
A kind of intermediary material in the preparation method of thermoplastic molding grating, the intermediary material are and above-mentioned thermoplastic mould
Modeling grid component identical or approximate one-dimensional linear composite material with proportional amount.
Embodiment as one preferred, the width dimensions and grid mold groove similar width of the intermediary material,
Preferably smaller than it is equal to mold groove width；Its length dimension is less than the length of fiber yarn in spool；It also can be according to actual production
Process requirement, by intermediary material cut into the comparable length dimension of grid mold groove length, and preferably smaller than be equal to mould
Has groove length.
Embodiment as one preferred, the fiber in the intermediary material are by thermoplastic resin thorough impregnation (hole
Gap rate is less than 5%) or non-fully impregnation state (porosity is greater than 5%).
Embodiment as one preferred, the cross-sectional shape of the intermediary material be round bar shape, rectangle, square,
Trapezoidal, oval or other shapes.
Embodiment as one preferred, the cross sectional shape of the intermediary material are cross sectional shape in overall length size
Can be in overall length size it is prismatic (as shown in Figure 9), but also for convenience of molding and carry out the tool that special designing is crossed
There are the wire rod or profile of variable cross-section feature (as shown in Figure 10).
Embodiment as one preferred, the intermediary material is full composite material 10 or has thermoplastic resin clad
11 cladded type composite material, the cladding form of the clad coats for surrounding cladding, up and down, left and right coats or has cladding
The other structures form (as shown in figure 11) of structure feature.
Embodiment as one preferred, the composite material and intermediate material that the cladded type composite inner is wrapped by
The global sections of material are same cross sectional shape or different cross section shape.
Preferably, the clad of the cladded type composite material is without the thermoplastic resin of reinforcing fiber or with short fibre
The thermoplastic resin of enhancing is tieed up, recipe ingredient and the recipe ingredient of resin system in the composite material being wrapped by are close, identical
Or it is different.The recipe ingredient different from resin system in composite material can be used according to actual needs.
As shown in figure 12, the application provides a kind of preparation method of thermoplastic molding grating, which includes intermediate
Material preparation, intermediary material is filled into grill forming die groove, and heating mould melts intermediary material, molding,
It pressurizes, exhaust bubble, cooling and shaping demoulds, and finishing finally obtains finished product.
Embodiment as one preferred, laying side intermediary material being filled into grill forming die groove
Method, which can be, carries out continuous winding laying (as shown in figure 13) according to certain path；But the intermediate material for also cutting fixed length
Material carries out horizontal, longitudinal direction intersection laying (as shown in figure 14) parallel to each other or staggeredly interts laying up and down；Also or in advance will in
Mesosome material is shaped to the dimensional thinlayer grid for having same mesh spacing with target thermoplastic molding grating, as transverse and longitudinal exists together together
One plane grid (as shown in figure 15), transverse and longitudinal are respectively in two plane level crossing type grids (as shown in figure 16), transverse and longitudinal point
Locate two planes interlude grid (as shown in figure 17) up and down, then integrally successively spreads grid into thermoplastic molding grating mold
In (as shown in figure 18).
Embodiment as one preferred, the mould heating-up temperature are 100~400 DEG C, preferably 150~250 DEG C.
Embodiment as one preferred, the moulding pressure are 0.1~20MPa, preferably 3~8MPa.Made by pressurization
The intermediary material of multilayer firmly bonds together, while reinforcing fibre further impregnates.
Embodiment as one preferred, the type of cooling is using oil in the modes such as cold, water cooling, air-cooled, natural cooling
One or more combinations.
Embodiment as one preferred, the cooling temperature are 20~150 DEG C, preferably 60~130 DEG C.
Embodiment as one preferred can also be heat-treated molding grid according to actual needs after demoulding.
Embodiment 2:
A kind of novel thermoplastic thermoplastic molding grating, is made of longitudinal rib, cross rib, and the longitudinal rib and cross rib are mutual
Vertical handover forms several grate openings, and the grid rib is made of the raw material of following percent by volume: 30% glass fibre (GF),
50% polypropylene (PP), 15% fire retardant, 4.5% compatilizer, 0.5% antioxidant, height of grid h are 38mm, grid transverse and longitudinal net
Compartment is 40mm away from a, b, and grid web thickness t is 5mm, and grid length L is 2000mm, and grid width W is 1000mm.
The intermediary material of above-mentioned GF/PP thermoplasticity thermoplastic molding grating is prepared as round prismatic cladded type composite wood
Stockline material, profile diameter 5mm.The round composite material wire rod that it is diameter 3.5mm that centre, which is wrapped by, by 55% glass fibers
Dimension, 25% thermoplastic polypropylene, 15% fire retardant, 4.5% compatilizer, 0.5% antioxidant are constituted；Unilateral coating thickness
0.75mm is made of 80% polypropylene, 15% fire retardant, 4.5% compatilizer, 0.5% antioxidant.
A kind of preparation method of GF/PP thermoplasticity thermoplastic molding grating, is heated to 190 DEG C for mold first, then according to
Above-mentioned round intermediary material is filled into thermoplastic molding grating mold by certain laying path using continuous winding method,
After transverse and longitudinal groove respectively fills 10 layers of intermediate circle wire rod, pressurize 5MPa, and keeps 5min, is then quickly cooled to 100 DEG C,
After demoulding finishing, stacking is spare.
Thus the molding cycle 30min of the GF/PP thermoplasticity thermoplastic molding grating of step preparation, and its fiber is with alternate
Type distribution form feature.
Embodiment 3:
A kind of novel thermoplastic thermoplastic molding grating, is made of longitudinal rib, cross rib, and the longitudinal rib and cross rib are mutual
Vertical handover forms several grate openings, and the grid rib is made of the raw material of following percent by volume: 40% glass fibre (GF),
40% polyethylene (PE), 12% fire retardant, 4% compatilizer, 2% color masterbatch, 2% anti-UV, height of grid h are 38mm, grid transverse and longitudinal
Grid spacing a, b is 38mm, and grid web thickness t is 5mm, and grid length L is 3660mm, and grid width W is 1220mm.
It is multiple for prismatic rectangular slat cladded type to prepare the intermediary material of above-mentioned GF/PE thermoplasticity thermoplastic molding grating
Condensation material, width 5mm, thickness 2mm.The width that centre is wrapped by composite material is 5mm, with a thickness of 1.2mm, by 65% glass
Fiber, 25% polyethylene, 4% fire retardant, 5% compatilizer, 2% color masterbatch, 1% anti-UV are constituted；Unilateral coating thickness 0.4mm,
It is made of 67% polyethylene, 25% fire retardant, 3% compatilizer, 2% color masterbatch, 3% anti-UV.
A kind of preparation method of GF/PE thermoplasticity thermoplastic molding grating, prepares intermediate for above-mentioned rectangle cladded type first
Material is prepared into the two-dimensional surface grid grid of length 3660mm, width 1220mm, grid spacing 38mm, then by two-dimensional surface
Grid grid laying amounts to 19 layers of laying into thermoplastic molding grating mold, and then simultaneously heating mould is to 180 DEG C for molding, to poly-
All after melting, pressurize ethylene 3MPa, and keeps 3min, is subsequently cooled to 80 DEG C, and demoulding finishing, stacking is spare,
Thus the molding cycle 20min of the GF/PE thermoplasticity thermoplastic molding grating of step preparation, and its fiber is with alternate
Type distribution form feature.
Embodiment 4:
A kind of novel thermoplastic thermoplastic molding grating, is made of longitudinal rib, cross rib, and the longitudinal rib and cross rib are mutual
Vertical handover forms several grate openings, and the grid rib is made of the raw material of following percent by volume: 50% carbon fiber (CF),
33% nylon 6 (PA6), 2% compatilizer, 3% anti-UV, 8% fire retardant, 0.5% antioxidant, 3% release agent, 0.5% defoaming agent,
Height of grid h is 25mm, and grid transverse and longitudinal grid spacing a, b is 38mm, and grid web thickness t is 5mm, and grid length L is
2440mm, grid width W are 1220mm.
Prepare the intermediary material of above-mentioned GF/PP thermoplasticity thermoplastic molding grating by 50% carbon fiber, 33% nylon66 fiber,
2% compatilizer, 3% anti-UV, 8% fire retardant, 0.5% antioxidant, 3% release agent, 0.5% defoaming agent are constituted.Its outer shape
Strip full composite material sheet material of the feature for non-constant section, width dimensions 5mm, thickness 2.5mm, and every 38mm rectangle
Gradually transition is the thick another cross sectional shape of 8.3mm wide, 1.5mm in section.
A kind of preparation method of CF/PA66 thermoplasticity thermoplastic molding grating first distinguishes above-mentioned preparation intermediary material
The band that several length are 2440mm and 1220mm size is cut into, transverse and longitudinal is then carried out respectively and replaces laying, Gong Jipu in parallel
After putting 10 circulations, heating mould is to 260 DEG C, and pressurize 3MPa, then mold is cooled to 120 DEG C, demoulds and repair by pressure maintaining 3min
It is whole, and carry out 90 DEG C of annealing 5h.
Thus the molding cycle 25min of the CF/PA6 thermoplasticity thermoplastic molding grating of step preparation, and its fiber is with whole
Body is uniformly distributed form feature.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Claims (10)
1. a kind of thermoplastic molding grating, which is characterized in that be made of longitudinal rib, cross rib, the longitudinal rib and cross rib are mutual
Vertical handover forms several grate openings, and the grid rib includes the reinforcing fiber and 20-90% volume of 10-80% percent by volume
The thermoplastic resin of percentage.
2. thermoplastic molding grating as described in claim 1, which is characterized in that the fiber can be in distribute alternately, is whole equal
Even distribution or any other plastic distribution form；The fiber is that unidirectional continuous fiber reinforcement form or fabric enhance shape
Formula.
3. thermoplastic molding grating as described in claim 1, which is characterized in that the fiber is glass fibre, carbon fiber, aramid fiber
Fiber, basalt fibre, hdpe fiber, polypropylene fibre, polyester fiber etc. be inorganic or organic fiber in it is any
The composite fibre of one or more assorted fibres or reinforcing fiber and resin fibre；The thermoplastic resin is polyethylene, poly- third
Alkene, polyvinyl chloride, nylon, ABS, polylactic acid, polycarbonate, polyethylene terephthalate, thermoplastic polyurethane, polyphenylene sulfide
The mixing of one or more of thermoplastic resins such as ether, polyether sulfone, polyether-ether-ketone；It also include color in the thermoplastic molding grating
One of the fillers or auxiliary agent or several such as mother, fire retardant, compatilizer, antioxidant, anti-UV, inorganic particle, release agent, defoaming agent
Kind.
4. thermoplastic molding grating as described in claim 1, which is characterized in that the thermoplastic molding grating also includes lateral reinforcement
The panel of rib, longitudinal reinforced rib or covering longitudinal rib and transverse ribs.
5. thermoplastic molding grating as described in claim 1, which is characterized in that the length L of the thermoplastic molding grating is 1000
~5000mm, width W are 500~2000mm, and height h is 10~80mm, and thickness t is 2~15mm.
6. thermoplastic molding grating as described in claim 1, which is characterized in that the grate opening of the thermoplastic molding grating is pros
Shape, rectangle, triangle or other geometries, percent opening 20%~80%, 3~150kg/m of surface density2。
7. a kind of preparation method of thermoplastic molding grating, which comprises the steps of: intermediary material preparation, will in
Mesosome material is filled into grill forming die groove, and heating mould melts intermediary material, is molded, pressurization, exhaust bubble, cold
But it is formed, demoulds, finishing finally obtains finished product.
8. the preparation method of thermoplastic molding grating as claimed in claim 7, which is characterized in that the mould heating-up temperature is
100~400 DEG C；The moulding pressure is 0.1~20MPa；The type of cooling cold, water cooling, air-cooled, natural cooling etc. using oil
One of mode or multiple combinations；The cooling temperature is 20~150 DEG C, preferably 60~130 DEG C.
9. the intermediary material in a kind of preparation method for thermoplastic molding grating, which is characterized in that the intermediary material
For one-dimensional linear composite material identical or approximate with above-mentioned thermoplastic molding grating component and proportional amount.
10. it is described in claim 1 it is full dipping fibrous composite grating band preparation method production thermoplastic molding grating,
Reinforcement type thermoplastic molding grating, inspection well cover, other well lids, pore type, stair tread, deck, can pultrude process preparation profile
Application in (T, I, U, Π etc.).
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| CN110937031A (en) * | 2019-12-26 | 2020-03-31 | 天津中科先进技术研究院有限公司 | A wear-resistant and impact-resistant logistics compartment floor |
| CN112267451A (en) * | 2020-10-15 | 2021-01-26 | 海南大学 | Fabrication method and foundation of coir fiber epoxy resin composite fabric reinforced foundation |
| US11434616B1 (en) | 2019-12-19 | 2022-09-06 | Robert Anderson | Erosion block |
| CN115991932A (en) * | 2022-12-15 | 2023-04-21 | 立美地板制品(广东)有限公司 | An anti-static ditch cover |
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Application publication date: 20190312 |