CN85100806A - Improvements in fibre reinforced plastic sheeting - Google Patents
Improvements in fibre reinforced plastic sheeting Download PDFInfo
- Publication number
- CN85100806A CN85100806A CN85100806.2A CN85100806A CN85100806A CN 85100806 A CN85100806 A CN 85100806A CN 85100806 A CN85100806 A CN 85100806A CN 85100806 A CN85100806 A CN 85100806A
- Authority
- CN
- China
- Prior art keywords
- fiber
- thin slice
- reinforced plastic
- plastic thin
- firm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229920002430 Fibre-reinforced plastic Polymers 0.000 title claims abstract description 10
- 239000011151 fibre-reinforced plastic Substances 0.000 title claims abstract description 10
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 4
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract description 4
- 239000000835 fiber Substances 0.000 claims description 27
- 239000000463 material Substances 0.000 claims description 20
- -1 polyethylene Polymers 0.000 claims description 11
- 229920003023 plastic Polymers 0.000 claims description 10
- 239000004033 plastic Substances 0.000 claims description 10
- 239000012815 thermoplastic material Substances 0.000 claims description 8
- 239000004743 Polypropylene Substances 0.000 claims description 7
- 229920001155 polypropylene Polymers 0.000 claims description 7
- 239000004698 Polyethylene Substances 0.000 claims description 3
- 229920000573 polyethylene Polymers 0.000 claims description 3
- 229920000915 polyvinyl chloride Polymers 0.000 claims description 2
- 239000004800 polyvinyl chloride Substances 0.000 claims description 2
- 239000012783 reinforcing fiber Substances 0.000 claims description 2
- 229920001187 thermosetting polymer Polymers 0.000 claims description 2
- 239000004793 Polystyrene Substances 0.000 claims 1
- 229920000139 polyethylene terephthalate Polymers 0.000 claims 1
- 239000005020 polyethylene terephthalate Substances 0.000 claims 1
- 229920002223 polystyrene Polymers 0.000 claims 1
- KAKZBPTYRLMSJV-UHFFFAOYSA-N vinyl-ethylene Natural products C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims 1
- 230000003014 reinforcing effect Effects 0.000 abstract 1
- 239000003365 glass fiber Substances 0.000 description 14
- 238000003825 pressing Methods 0.000 description 10
- 238000005728 strengthening Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 239000011159 matrix material Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 229920000271 Kevlar® Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000002144 chemical decomposition reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000004761 kevlar Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000000206 moulding compound Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- SCUZVMOVTVSBLE-UHFFFAOYSA-N prop-2-enenitrile;styrene Chemical compound C=CC#N.C=CC1=CC=CC=C1 SCUZVMOVTVSBLE-UHFFFAOYSA-N 0.000 description 1
- 239000002990 reinforced plastic Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Reinforced Plastic Materials (AREA)
- Laminated Bodies (AREA)
Abstract
A strong fibre reinforced plastic sheet contains 20 to 60% by weight of reinforcing fibres. It has a high modulus of elasticity (as described herein), a substantial proportion of fibres, of length between 7 and 50 mm and diameter of 13 microns or less, and 40% to 80% by weight of thermoplastic.
Description
This invention is relevant with fibre reinforced plastics sheets.
The plastics sheet materials that thermoplastic resin is done is widely used for making the mold pressing article.Yet its intensity of such material or rigidity are also little, so need the place of such characteristic at those, just adopt fiber reinforced way.
Thereby, for instance, when making so a kind of material, the backing of glass fibre from level to level is clipped in from level to level between the thermoplastic material, this compound works is united by a seam, produce stacking aggregation to a certain degree, the solid thin slice that has solidified is produced in heating under pressure then, for the usefulness of mold pressing.
Yet, when being used for the deep-draw pressing mold, can find that such material can not be used to make the moulded product with uniform texture intensity, this is because fiberglass blankets is made up of very long glass fibre fibre (being fibrous bundle), the chances are 200 centimetres or longer, it fills among whole thin slice with the form of mixed and disorderly distortion, and this has just greatly limited their rotations when mold pressing.Because they can not flow with the molten thermoplastic material that becomes defective goods in the structure.As a result, the part that moulded product is relatively thinner is located just to have lacked fiber strengthening as adding rib, rib etc.
Now this one of them target of invention is exactly the plastic material that will provide fiber reinforced, is used for the plastic article that molded fiber reinforces, and it overcomes or alleviated the shortcoming of above-mentioned known materials.
So this invention a kind of firm fiber strengthening is provided plastic tab, its composition is 20% to 60% by weight reinforcing fiber, it has high elastic coefficient (having illustrated as this paper), quite the staple length of vast scale is between 7 and 50 millimeters, and diameter is 13 microns or thinner 1 and 40% to 80% thermoplastic materials by weight.
Best, this fiber is the glass fibre that becomes independent discrete form.Because fiber often is adhered together when supply, become the thigh bundle that splits, if will laminate, they must be broken earlier becomes single fiber.
The meaning of high-elastic potential coefficient is exactly the coefficient of elasticity that its coefficient of elasticity is higher than thin slice significantly, and meet such fiber and comprise glass, the fiber of carbon element and pottery, " Avamid " fiber for example, it is to be after commercial name is sold with Kevlar and Ncmex; Also comprised widely simultaneously having and be higher than your fiber of 10,000 megapascal (MPa)s.
This discrete glass fibre should not be shorter than about 7 millimeters, and diameter should be greater than 13 microns, because the not competent matrix that is used for reinforced plastics of such fiber.The single fiber of other material will have at least with the equally high reinforcement usefulness of glass fibre, could replace it to use.
Further describe this invention now, see also accompanying drawing: one
Fig. 1 is to be the thin portion in cross section by the made article with the compacting of fiber strengthening sheets of plastic material of the present invention according to the cross section enlarged view 1 of the made fiber strengthening sheets of plastic material of the present invention and Fig. 2.
Consult Fig. 1, this shows a thin slice 1, is made up of the matrix 2 of thermoplastic material, is heated and pressurizes and be solidified into a kind of firm continuous shape.Disorderly and unsystematic dispersed is a fiber 3 in whole matrix, its sizable part be length between 7 and 50 millimeters, diameter is then less than 13 microns.Best, to there be 95% the fiber should be within specified size at least.
Consult Fig. 2 now, show the cross section of a pressing here, this moulded product is with the thin slice shown in Fig. 1, produces with thermoplastic mould technology.Moulded product 4 has a main nethike embrane 5, and strengthening rib 6 is outstanding from its there.When mold pressing, fiber 3 presses together with plastic material as can be seen, enters among the strengthening rib 6, has so just improved their intensity significantly.
Example relatively
Be to do a test of comparing in this example, this test is to be that 12 mm dias are 11 microns and 50% polypropylene thermoplastics with its length of 50% individual glass fibers that contains by system of the present invention, with the commodity that can buy in a kind of city, glass fibre/polypropylene sheet is made comparisons.The latter has the long bundle of continuous strand thread, with layer making and solidification method is produced, narrates as this paper front.The thin slice that can buy in this city is made up of 30% glass fibre and 70% polypropylene, and the thickness of two kinds of thin slices is identical.These two thin slices must be through processing sequencees of mold pressing, be used for producing one big must be as the moulded product of plate, about 12 centimeters of its press depth, and inner face has thin strengthening rib.Originally, put this thin slice the infrared oven of a special construction into, it can allow the temperature of heating material be controlled, when the temperature of whole thin slice surpasses 200 ℃, till polypropylene melts fully.When they are gentle when changing face and turning, every thin slice is transferred to following one side of something of a unlimited stamper tool with hand, temperature there remains on 90 ℃, then the first half of this instrument is applied the total pressure of 25 Pascals with hydraulic press, mold closure is after take out of moulded product then to be repaiied after cooling and remove the material burr 6 seconds.
According to the moulded product that the made thin slice of the present invention is produced, its outline profile and desired near conforming to, but with the material produce that has bought in market come out quite different, mainly be because the latter has and returns the molding insufficient pressure to fill stretching to reach desired branch.
Cut off the square fritter of following five one inch from every corresponding position of moulded product different sites and come, these fritters are put in the process furnace together with the nubbin of each moulded product and are gone.In this stove, volatile organic composition is burnt at 700 ℃, and remaining is the resistates of glass fibre.
Demonstrate this result in the table below
Table
The content of glass fiber content of glass fiber
Square contrivance proprietary concentrate
1 52 35
2 49 28
3 51 34
4 50 17
5 50 27
Thin slice 51 30
Represented result from table, can see too clearly, with the material consistency that its content of glass fiber keeps in mold process of invention, compared with coming much more with the proprietary concentrate of having bought, although the latter is contained the thermoplastic material of higher proportion, and less distortion in mold process.Believe this be because, according to the thin slice that the present invention does, fiber wherein has bigger movability and bigger flexibility concurrently in the technological process of mold pressing.
Suitable thermal plastic material comprises polyethylene, polypropylene, poly-basic ethene, the acrylonitrile-styrol butadienecopolymer, polyethylene is to acid ester salt, and polyvinyl chloride, be become mouldable or become implastic all can, expect that according to general any thermoplastic material is all available, as long as it does not play the chemical erosion effect with water, and after being heated, enough flexibilities can be arranged and chemical degradation can not take place.In the thermosetting material that forms after the heat may be also included within, just thin slice will carry out mold pressing in one section fully enough weak point and acceptable time after formation.
Many known technologies can be used for producing this according to the made thin slice of the present invention, like this, the nethike embrane of a fiber and synthetic resin moulding compound can be used in English Patent number 1129757, reach the processing method of being narrated in 1329409 and produce, and promptly will be cured subsequently with pressure sintering.On the other hand, the fiber that contains the resin granule also can be produced.They can be moulded to thin slice thereafter, perhaps fiber are dispersed in the liquid resin, produce a kind of doughy material with this, then it are placed on from level to level on the smooth roll of a heat and produce this thin slice.
This invention also expands to a kind of matrix material, and that is that several of will make according to the present invention become to be grouped into different tab laminates together.
Again for instance, four thin slices, every every weight per square meter 500 grams, they are to use the technology mode of British Patent No. 1129757 and 1329409 to prepare.Wherein two content of glass fiber is 40% by weight, and two is 60% by weight again, and every kind of remaining surplus is a polypropylene powder.
These four thin slice tegillums stack togather, and put in the hot-die plate pressing machine, will contain the fuse of this thin slice that changes of conduct of height smooth fibre.This last synthetic laminate contains the uniform thin slice of 50% glass fibre quality with same thickness and compares, and its anti-crawl agentdefiection toughness has strengthened.
Claims (6)
1, a kind of firm fiber-reinforced plastic thin slice, contain 20% to 60% by weight reinforcing fiber, it has the coefficient of elasticity (as described herein) of height, fiber have sizable ratio, length between 7 and 50 millimeters, diameter is 13 microns or thinner and 40% to 80% by weight thermoplastic material.
2, a kind of firm fiber-reinforced plastic thin slice is as desired in claim 1, and at its there face, fiber is to be in single dispersive state.
3, a kind of firm fiber-reinforced plastic thin slice is thermoplastic as in claim 1 or the claim 2 at its inside plastic material.
4, a kind of firm fiber-reinforced plastic thin slice, as desired in the claim 3, at its there face thermoplastic material is polyethylene, polypropylene, polystyrene, acrylonitrile-styrol divinyl, polyethylene terephthalate or polyvinyl chloride both can become plasticly, also can become implastic.
5, a kind of firm fiber-reinforced plastic thin slice, as desired in claim 1 or the claim 2, its inside plastic material be a kind of can be in the thermosetting material of postforming.
6, a kind of firm fiber-reinforced plastic thin slice, (the same as described herein basically) can be referring to also showing in the accompanying drawings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 85100806 CN1031345C (en) | 1984-01-06 | 1985-04-01 | Improvements in fibre reinforced plastics sheets |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB848400293A GB8400293D0 (en) | 1984-01-06 | 1984-01-06 | Moulded fibre reinforced plastics articles |
| CN 85100806 CN1031345C (en) | 1984-01-06 | 1985-04-01 | Improvements in fibre reinforced plastics sheets |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85100806A true CN85100806A (en) | 1986-07-09 |
| CN1031345C CN1031345C (en) | 1996-03-20 |
Family
ID=25741320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 85100806 Expired - Lifetime CN1031345C (en) | 1984-01-06 | 1985-04-01 | Improvements in fibre reinforced plastics sheets |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1031345C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107709416A (en) * | 2015-04-22 | 2018-02-16 | 英力士苯领集团股份公司 | Fibrous composite is produced using amorphous chemical modification of polymer |
-
1985
- 1985-04-01 CN CN 85100806 patent/CN1031345C/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107709416A (en) * | 2015-04-22 | 2018-02-16 | 英力士苯领集团股份公司 | Fibrous composite is produced using amorphous chemical modification of polymer |
| CN107709416B (en) * | 2015-04-22 | 2021-08-24 | 英力士苯领集团股份公司 | Production of fibrous composites using amorphous chemically modified polymers |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1031345C (en) | 1996-03-20 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| C17 | Cessation of patent right |