WO2017068872A1 - Mat de filaments de verre hachés et matériau de plafond moulé pour automobile - Google Patents

Mat de filaments de verre hachés et matériau de plafond moulé pour automobile Download PDF

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Publication number
WO2017068872A1
WO2017068872A1 PCT/JP2016/075811 JP2016075811W WO2017068872A1 WO 2017068872 A1 WO2017068872 A1 WO 2017068872A1 JP 2016075811 W JP2016075811 W JP 2016075811W WO 2017068872 A1 WO2017068872 A1 WO 2017068872A1
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Prior art keywords
glass chopped
chopped strand
glass
strand mat
range
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PCT/JP2016/075811
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English (en)
Japanese (ja)
Inventor
晃 國友
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日本電気硝子株式会社
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4209—Inorganic fibres
    • D04H1/4218—Glass fibres
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
    • D04H1/60—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in dry state, e.g. thermo-activatable agents in solid or molten state, and heat being applied subsequently

Definitions

  • the present invention relates to a glass chopped strand mat used as a reinforcing material for glass fiber reinforced plastic (GFRP), a reinforcing material such as an automotive molded ceiling material, and an automotive molded ceiling material provided with the glass chopped strand mat.
  • GFRP glass fiber reinforced plastic
  • the glass chopped strand mat is a reinforcing material in which a large number of glass chopped strands are bonded to each other and formed into a mat shape, and is known to be lightweight and have high mechanical strength.
  • a sizing agent is applied to the surface of a large number of glass filaments, and a large number of glass chopped strands are prepared by cutting glass strands obtained by focusing to a predetermined length.
  • the glass chopped strand mat manufactured in this way is widely used as a constituent material of various fiber-reinforced molded composite materials such as automobile molded ceiling materials.
  • a glass chopped strand mat is used by being adhered to both surfaces of a foamed resin sheet.
  • Patent Documents 1 to 4 listed below disclose glass chopped strand mats used for automobile molded ceiling materials.
  • Patent Documents 1 and 2 describe that the basis weight of the glass chopped strand mat is 80 g / m 2 to 200 g / m 2 .
  • Patent Documents 3 and 4 describe that the basis weight of the glass chopped strand mat is preferably 50 g / m 2 to 200 g / m 2 .
  • automobile molded ceiling materials are required to reduce the weight per unit area in order to reduce the weight of the entire automobile.
  • an adhesive is used when bonding the glass chopped strand mat and the foamed resin sheet, but if the adhesive does not sufficiently penetrate the mat, the molded automobile molded ceiling material lacks rigidity, After bonding, the glass chopped strands sometimes peeled off from the mat.
  • the basis weight of the glass chopped strand mat may be reduced as in Patent Documents 1 to 4, but the basis weight becomes smaller.
  • the distribution of the glass chopped strands may become non-uniform, and the tensile strength of the glass chopped strand mat may decrease.
  • the glass chopped strand mat drawn from the outer layer of the wound body is wound into a roll again after the adhesive is applied, and is drawn out from the outer layer again at the time of molding. Therefore, if the tensile strength is low, the mat is easily broken in this case, and the workability may be greatly reduced.
  • An object of the present invention is to provide a glass chopped strand mat and an automobile molded ceiling material that are excellent in workability and are less likely to cause glass wrinkling during molding when used in a fiber reinforced molded composite material.
  • the glass chopped strand mat according to the present invention is a glass chopped strand mat in which sheet-like deposits of glass chopped strands are bonded by a binder, and the basis weight of the glass chopped strand mat is xg / m 2
  • x is in the range of 60 or more and 150 or less
  • the mass ratio of the adhesion amount of the binder is x ⁇ 100
  • the range of ⁇ 1.5% of A represented by the following formula (1)
  • x> 100 it is in the range of ⁇ 1.5% or more of A and + 0.9% or less of A
  • the full width tensile strength is ⁇ 300 N of B represented by the following formula (2) / M.
  • the glass chopped strand mat according to the present invention is preferably in the range of ⁇ 1.2% of A represented by the formula (1) when the mass ratio of the adhesion amount of the binder is x ⁇ 100. , X> 100, it is in the range of -1.2% or more of A and + 0.6% or less of A.
  • the full width tensile strength is in a range of ⁇ 200 N / m of B represented by the formula (2).
  • the count of the glass chopped strand is preferably in the range of 10 tex or more and 30 tex or less.
  • the length of the glass chopped strand is in the range of 30 mm or more and 150 mm or less.
  • the automobile molded ceiling material according to the present invention includes a base material sheet and the above-described glass chopped strand mat laminated on both sides or one side of the base material sheet.
  • the present invention it is possible to provide a glass chopped strand mat and an automotive molded ceiling material that are excellent in workability and are less likely to cause glass wrinkling during molding when used in a fiber reinforced molded composite material.
  • FIG. 1 is a schematic perspective view showing a cake according to an embodiment of the present invention.
  • FIG. 2 is a schematic view showing an example of a glass chopped strand mat manufacturing apparatus according to the present invention.
  • FIG. 3 is a schematic partial cross-sectional view of an automotive molded ceiling material according to an embodiment of the present invention.
  • FIG. 4 is a diagram showing the relationship between the basis weight of the samples obtained in Examples and Comparative Examples and the amount of binder attached.
  • FIG. 5 is a diagram showing the relationship between the basis weight of the samples obtained in Examples and Comparative Examples and the full width tensile strength.
  • the glass chopped strand mat of the present invention is formed by bonding glass chopped strand sheet-like deposits with a binder.
  • the inventors of the present invention limited the basis weight of the glass chopped strand mat, the mass ratio of the adhesion amount of the binder, and the total width tensile strength to a specific range, thereby improving the workability of the glass chopped strand mat and fiber reinforced molding. It has been found that glass wrinkles can be improved during molding of composite materials.
  • the specific range of the basis weight of the glass chopped strand mat, the mass ratio of the adhesion amount of the binder, and the full width tensile strength in the present invention will be described in detail.
  • the basis weight of the glass chopped strand mat is in the range of 60 g / m 2 or more and 150 g / m 2 or less.
  • the glass chopped strand mat of the present invention has a basis weight of 60 g / m 2 or more, it is difficult for perforation to occur and has excellent tensile strength. Moreover, since a basis weight is 150 g / m ⁇ 2 > or less, the weight reduction of a glass chopped strand mat can be achieved.
  • the basis weight of the glass chopped strand mat is preferably 70 g / m 2 or more, and preferably 145 g / m 2 or less.
  • the basis weight of the glass chopped strand mat is more preferably 80 g / m 2 or more, and more preferably 130 g / m 2 or less.
  • the basis weight of the glass chopped strand mat can be measured in accordance with “7.2 Mass (mass) of cloth and mat” of JIS R3420 (2013).
  • the basis weight of the glass chopped strand mat may be expressed as xg / m 2 .
  • the glass chopped strand mat according to the present invention is in the range of ⁇ 1.5% of A represented by the following formula (1) when the mass ratio of the adhesion amount of the binder is x ⁇ 100, and x> 100 In this case, it is in the range of ⁇ 1.5% or more of A and + 0.9% or less of A.
  • the range of ⁇ 1.5% of A refers to a range of ⁇ 1.5% or more of A and + 1.5% or less of A.
  • the glass chopped strand mat of the present invention is excellent in tensile strength because the mass ratio of the adhesion amount of the binder is not less than the above lower limit. Moreover, the adhesiveness between the glass chopped strands becomes good, and the glass chopped strands do not fall apart when the ceiling material is formed. On the other hand, since the mass ratio of the adhesion amount of the binder is equal to or less than the above upper limit, the glass chopped strand does not adhere to the cooling mill water cooling roll 18 when cooling and pressing through the cooling mill water cooling roll 18 described later, Thickness is uniform and tensile strength is difficult to be non-uniform. Furthermore, the glass chopped strand mat has moderate flexibility and can be used for forming ceiling materials having various shapes.
  • the mass ratio of the adhesion amount of the binder is x ⁇ 100, it is ⁇ 1.2% of A represented by the above formula (1).
  • x> 100 it is preferable to be within the range of ⁇ 1.2% or more of A and + 0.6% or less of A.
  • x ⁇ 100 it is represented by the above formula (1).
  • A is more preferably within a range of ⁇ 0.9% of A, and when x> 100, it is more preferably within a range of ⁇ 0.9% or more of A and + 0.3% or less of A.
  • the adhesion amount of a binder is an ignition loss measured based on "7.3 Moisture content and ignition loss" of JIS R3420 (2013).
  • the glass chopped strand mat of the present invention has a full width tensile strength in the range of ⁇ 300 N / m of B represented by the following formula (2).
  • the B within the range of ⁇ 300 N / m refers to a range of ⁇ 300 N or more of B and +300 N or less of B.
  • the glass chopped strand mat of the present invention since the full width tensile strength of the glass chopped strand mat is equal to or more than the above lower limit, it is difficult to break when the mat is pulled out from the outer layer of the wound body, and the strand is not easily dropped from the mat. Therefore, the glass chopped strand mat of the present invention is excellent in workability. Further, when used in a fiber reinforced molded composite material, the glass is not easily torn during molding, and the composite material is less likely to have reduced rigidity.
  • the full width tensile strength of the glass chopped strand mat is not more than the above upper limit, when used in a fiber reinforced molded composite, glass wrinkles are unlikely to occur during molding.
  • the total width tensile strength of the glass chopped strand mat is ⁇ 200 N / m of B in the above formula (2). It is preferably within the range, and more preferably within the range of ⁇ 150 N / m of B.
  • full width tensile strength can be adjusted as follows, for example, in addition to the adhesion amount and basis weight of the binder.
  • the glass chopped strand mat is obtained by spraying a binder and water on the deposited glass chopped strand, melting the binder in an oven, and then solidifying by cooling with a press roller. Manufactured. At this time, if the binder is sufficiently melted, the tensile strength tends to be high, whereas if it is insufficient, the tensile strength tends to be low. Therefore, the tensile strength can be adjusted by adjusting the oven temperature. In this case, if the oven temperature is lowered too much to adjust the tensile strength, the binder will not be sufficiently melted and the adhesive strength will be lowered, and the chopped strands may fall off from the glass chopped strand mat. It is necessary to note that.
  • the tensile strength increases as the pressure of the press roller increases, and the tensile strength tends to decrease as the pressure of the press roller decreases. Therefore, the tensile strength can be adjusted also by adjusting the pressure of the press roller.
  • the pressure of a press roller can be adjusted with methods, such as adjusting the clearance gap between the upper and lower sides of a press roller, or making a rubber layer adhere to the outer periphery of a press roller.
  • the full width tensile strength of the glass chopped strand mat can be adjusted by changing the heating temperature and pressing pressure of the binder in the production process, in addition to the basis weight and the amount of the binder attached.
  • the full width tensile strength is measured by the following procedure.
  • the width is 1260 mm
  • the glass chopped strand mat taken up by the winder 20 described later is pulled out by an arbitrary length
  • the width direction ends of the drawn-out part are two places each, for a total of four places.
  • Chuck Note that the distance between chucks in the width direction is 1260 mm
  • the distance between chucks in the winding direction (perpendicular to the width direction) is 100 mm.
  • the glass chopped strand mat in the drawn portion is viewed in a plan view
  • the chuck positions are connected by a straight line
  • a position that becomes a rectangle having a long side of 1260 mm and a short side of 100 mm is chucked.
  • the glass chopped strand mat was pulled in the winding direction at a speed of 200 mm / min, the maximum load until the mat broke was measured, and converted to N / m.
  • the value is the full width tensile strength.
  • the basis weight of the glass chopped strand mat, the mass ratio of the adhesion amount of the binder, and the full width tensile strength are within the above ranges. Therefore, the workability of the glass chopped strand mat and the fiber reinforced molded composite material The glass wrinkle at the time of shaping can be improved. Further, the glass chopped strand mat can be reduced in weight.
  • the glass chopped strand mat of the present invention is excellent in workability and can improve the glass wrinkle at the time of molding a fiber reinforced molded composite material, and therefore can be suitably used for a fiber reinforced molded composite material.
  • the glass chopped strand mat of the present invention can be more suitably used as a reinforcing material for automobile molded ceiling materials.
  • the glass chopped strand mat of the present invention is formed by bonding sheet-like deposits of glass chopped strands with a binder.
  • glass chopped strands constituting the glass chopped strand mat examples include glass chopped strands made of E glass, S glass, T glass, and the like.
  • the count of the glass chopped strands constituting the glass chopped strand mat is preferably in the range of 10 tex or more and 30 tex or less, and more preferably in the range of 15 tex or more and 25 tex or less.
  • a count is a count measured based on "7.1 count" of JISR3420 (2013).
  • the count of the glass chopped strand is less than the lower limit, when producing the glass chopped strand, it is necessary to spin a glass filament with a small diameter, or to reduce the number of converging glass filaments per glass strand, When manufacturing such a glass filament or glass strand, it may be cut during spinning. In addition, the cost may increase.
  • the distribution of the glass chopped strand constituting the glass chopped strand mat is likely to be non-uniform, and the mat is perforated or the mat has a low tensile strength. There are things to do.
  • the length of the glass chopped strand constituting the glass chopped strand mat is preferably 30 mm or more and 150 mm or less, and more preferably 40 mm or more and 100 mm or less.
  • the tensile strength of the glass chopped strand mat may be lowered. If the length of the glass chopped strand exceeds the upper limit, the dispersion of the glass chopped strands constituting the glass chopped strand mat tends to be non-uniform, and the mat may be perforated.
  • the manufacturing method of the glass chopped strand mat of this invention is not specifically limited, For example, it can manufacture with the following method.
  • the glass raw material put in the glass melting furnace is melted to form molten glass, and after the molten glass is made into a homogeneous state, the molten glass is drawn out from a heat-resistant nozzle attached to the bushing. Thereafter, the drawn molten glass is cooled to form a glass filament.
  • this glass filament is coated with a sizing agent, and with the sizing agent evenly applied, the glass filaments are aligned and bundled to form glass strands.
  • the obtained glass strand is wound around a production paper tube in the aligned state to produce a wound body. Subsequently, the wound wound body is dried, and a film of a sizing agent is formed on the surface of the glass strand to obtain a cake 1 shown in FIG.
  • the glass strand 10 is unwound from the inner layer of the dried cake 1 and sent to a plurality of cutting machines 12 attached to the ceiling portion of the chamber 11 and cut into a predetermined length.
  • a glass chopped strand 10A is obtained.
  • each cutting machine 12 is comprised from the cutter roller 12a and the rubber roller 12b, and cut
  • the glass chopped strands 10A are uniformly dispersed on the first conveyor 13 disposed at the bottom of the chamber 11, and are deposited in a sheet form.
  • the glass chopped strands 10 ⁇ / b> A deposited in a sheet shape are transported out of the chamber 11 and transported to the second transport conveyor 14.
  • the binder is uniformly sprayed by the spreader 15 on the glass chopped strand 10 ⁇ / b> A moving on the second transport conveyor 14, and transported to the next third transport conveyor 16.
  • the binder is softened and melted.
  • the sheet-like deposit of the glass chopped strand 10 ⁇ / b> A is moved to the outside of the heating furnace 17, and is cooled and pressed through the cooling roll water cooling rolls 18. Thereby, the binder which has been melted is solidified, and the glass chopped strand mat 19 can be obtained. In addition, the glass chopped strand mat 19 can be used by being wound by the winder 20 and being pulled out.
  • the bundling agent for bundling the glass filament is not particularly limited, and for example, a polyvinyl acetate emulsion can be used.
  • the sizing agent may further contain, for example, a silane coupling agent.
  • a silane coupling agent include amino silane, epoxy silane, vinyl silane, acrylic silane, chloro silane, mercapto silane, and ureido silane.
  • the reactivity with the said bundling agent on the surface of a glass strand can be improved by adding a silane coupling agent, and tensile strength can be improved further.
  • the sizing agent may contain components such as a lubricant, a nonionic surfactant, and an antistatic agent in addition to the silane coupling agent described above, and the mixing ratio of each component is necessary. It may be determined according to.
  • the binder for binding the glass chopped strand is not particularly limited, and a resin material such as polyester, polypropylene, vinyl acetate, acrylic, or epoxy can be used.
  • a resin material such as polyester, polypropylene, vinyl acetate, acrylic, or epoxy.
  • the binder is preferably a polyester resin, and particularly preferably a powdered unsaturated polyester resin. .
  • the form of the binder is not particularly limited, and for example, a powder form, a liquid form, a fiber form, a sheet form, or a film form can be used.
  • the full width tensile strength can be adjusted within the range of the present invention by adjusting the temperature in the heating furnace 17 and the cooling press pressure. For example, by setting the temperature in the heating furnace 17 high, the binder is easily melted, the adhesion between the glass chopped strands is improved, and as a result, the full width tensile strength is increased. In addition, by narrowing the gap amount between the water-cooling rolls 18 of the cold rolling mill, the adhesiveness between the glass chopped strands is improved by the pressure, and as a result, the full width tensile strength is increased.
  • the correlation between the adhesion amount of the binder, the temperature in the heating furnace 17, the gap amount between the water-cooling rolls 18 of the cold rolling mill and the full width tensile strength is investigated, and the full width tensile strength is calculated.
  • the full width tensile strength is calculated.
  • the automobile molded ceiling material of the present invention includes a base material sheet and the above-described glass chopped strand mat laminated on both sides or one side of the base material sheet.
  • the automobile molded ceiling material 21 includes a skin material 22 (inside the automobile), the above-described glass chopped strand mats 23, 23, a foamed urethane sheet 24 that is a base material sheet, and a back skin material 25 ( The vehicle body side).
  • Example 1 First, a sizing agent was applied to a glass filament having an E glass composition with a diameter of 11 ⁇ m so that the amount of adhesion was 0.4% by mass, and then 80 strands were formed to form a strand (count: 20 tex), and then wound, cake And then dried for a predetermined time.
  • the sizing agent is 6% by mass of polyvinyl acetate emulsion, 0.3% by mass of ⁇ -methacryloxypropyltrimethoxysilane, 0.5% by mass of quaternary ammonium salt, and 93.2% by mass of ion-exchanged water. What was prepared in this way was used.
  • the glass strand 10 was unwound from the inner layer of the dried cake, sent to a plurality of cutting machines 12 attached to the ceiling portion of the chamber 11, and cut into a predetermined length.
  • Each cutting machine 12 is comprised from the cutter roller 12a and the rubber roller 12b, and it is cut
  • a first conveyor 13 is disposed at the bottom of the chamber 11, and glass chopped strands 10 ⁇ / b> A cut to a length of 50 mm are uniformly distributed on the first conveyor 13 and accumulated in a sheet form. Then, it was transported out of the chamber 11 and transported to the next second transport conveyor 14.
  • a powder polyester resin (trade name: New Track 514, manufactured by Kao Corporation) is uniformly applied to the glass chopped strand 10A moving on the second conveyor 14 by a spreader 15 so that the amount of adhesion becomes 10% by mass. After spraying, it was conveyed to the next third conveyor 16. In the middle of the third conveyor 16, a heating furnace 17 is arranged, and the sheet-like deposit of the glass chopped strands 10 A on which the powdered polyester resin is dispersed is moved into the heating furnace 17 and heated at 230 ° C. The powdered polyester resin was softened and melted.
  • the adhesion amount of the binder of the glass chopped strand mat of Example 1 thus obtained was measured and found to be 10% by mass, and the full width tensile strength was measured to be 2217 N / m.
  • the basis weight of the glass chopped strand mat and the amount of binder attached, that is, the loss on ignition, were measured according to JIS R3420 (2013). Specifically, the adhesion amount of the binder was determined by subtracting the ignition loss of the cake used for the production of the glass chopped strand from the ignition loss of the glass chopped strand mat measured in accordance with JIS R3420 (2013).
  • Examples 2 to 19 and Comparative Examples 1 to 19 A glass chopped strand mat was produced in the same manner as in Example 1 except that the strand count, basis weight, and adhesion amount of the binder were set as shown in Tables 1 to 6 below. Further, the full width tensile strengths of the glass chopped strand mats of Examples 2 to 19 and Comparative Examples 1 to 19 were measured. The results are shown in Tables 1 to 6 below.
  • the glass chopped strand mat was pulled out from the wound body, and the presence or absence of breakage of the mat when pulled out was observed. In addition, it pulled out by applying force so that a drawing speed might be 20 m / min.
  • Formability The formability when the obtained glass chopped strand mat was used for reinforcing a molded ceiling material was evaluated.
  • two glass chopped strand mat 22 to the isocyanate resin is 50cm square size was applied so as to 15 g / m 2, of 180 g / m 2 of foamed urethane sheet 24,70g / m 2 knitted
  • the material skin material 22, 30 g / m 2 of the back skin material 25 is laminated as shown in FIG. 3, and the ceiling material is molded by heating at 200 ° C. for 1 minute with a mold heated to 200 ° C., and molded 100 times.
  • the rate of occurrence of glass wrinkles was defined as the defective rate.
  • the glass chopped strand mats of Examples 1 to 19 do not break when the mat is pulled out, and the defect rate such as glass wrinkles in the molded ceiling material is low.
  • the glass chopped strand mats of Comparative Examples 1 to 19 had a high defect rate such as breaking when the mat was pulled out, glass wrinkles in the molded ceiling material, and a decrease in rigidity.
  • FIG. 4 is a view showing the relationship between the basis weight of the samples obtained in Examples and Comparative Examples and the amount of binder attached. From FIG. 4, it was confirmed that in Examples 1 to 19, the mass ratio of the adhesion amount of the binder was between the curve showing the maximum value and the curve showing the minimum value in FIG. That is, when the mass ratio of the adhesion amount of the binder is x ⁇ 100, it is within the range of A ⁇ 1.5% represented by the following formula (1), and when x> 100, A ⁇ 0.9% As mentioned above, it has confirmed that it exists in the range of A + 1.5% or less.
  • the curve which shows the maximum value and minimum value in FIG. 4 shall satisfy
  • FIG. 5 is a diagram showing the relationship between the basis weight of the samples obtained in Examples and Comparative Examples and the full width tensile strength. From FIG. 5, it was confirmed that in Examples 1 to 19, the full width tensile strength was between the curve showing the maximum value and the curve showing the minimum value in FIG. That is, in Examples 1 to 19, it was confirmed that the full width tensile strength was in the range of B ⁇ 300 N / m represented by the following formula (2).
  • the curve which shows the maximum value and minimum value in FIG. 5 shall satisfy
  • the basis weight was in the range of 60 g / m 2 or more and 150 g / m 2 or less.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Nonwoven Fabrics (AREA)
  • Surface Treatment Of Glass Fibres Or Filaments (AREA)

Abstract

La présente invention concerne un mat de filaments de verre hachés ayant une excellente aptitude au façonnage et dans lequel les rides de verre sont peu susceptibles de survenir pendant le moulage, lorsqu'il est utilisé dans un élément composite moulé renforcé par fibres. L'invention concerne un mat de filaments de verre hachés dans lequel un dépôt en forme de feuille de filaments de verre hachés est lié avec un liant, dans lequel, lorsque le poids du mat de filaments de verre hachés est défini comme étant x g/m2, x est dans la plage de 60 à 150, lorsque x ≤ 100, le rapport en masse de la quantité adhérente du liant est dans la plage de ± 1,5 % de A représenté dans la formule (1), et lorsque x > 100, le rapport en masse est dans la plage de -1,5 % et +0,9 % de A, la résistance à la traction transversale totale du mat de filaments de verre hachés étant dans la plage de ±300 N/m de B représenté dans la formule (2). A (%) = 0,0019x2 – 0,5443x + 45,4...Formule (1) B (N/m) = 0,5768x 2 – 97,197x + 6000...Formule (2)
PCT/JP2016/075811 2015-10-22 2016-09-02 Mat de filaments de verre hachés et matériau de plafond moulé pour automobile WO2017068872A1 (fr)

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Cited By (1)

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CN112955391A (zh) * 2018-12-20 2021-06-11 日本电气硝子株式会社 玻璃短切原丝毡的卷绕体的形成方法及玻璃短切原丝毡的卷绕体

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JP2011099190A (ja) * 2009-11-09 2011-05-19 Nitto Boseki Co Ltd ガラスチョップドストランドマットの製造方法
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JP2008038297A (ja) * 2006-08-08 2008-02-21 Nippon Electric Glass Co Ltd ガラスチョップドストランドマット、その製造方法及びそれを用いた自動車成形天井材
JP2011099190A (ja) * 2009-11-09 2011-05-19 Nitto Boseki Co Ltd ガラスチョップドストランドマットの製造方法
CN103147223A (zh) * 2013-04-02 2013-06-12 浙江联洋复合材料有限公司 一种玻璃纤维薄毡连续生产线及其使用方法

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CN112955391A (zh) * 2018-12-20 2021-06-11 日本电气硝子株式会社 玻璃短切原丝毡的卷绕体的形成方法及玻璃短切原丝毡的卷绕体

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