JP2803415B2 - Curing net - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a curing net for building materials, and more particularly to a curing net for building materials having improved flame resistance, discoloration and durability.

[0002]

BACKGROUND OF THE INVENTION nutrient raw net, for the purpose of safety and environmental aesthetics, is used as the vertical tension, such as construction site basis
Material, a curing mesh, a curing sheet or a safety
Ru mower be referred to as a Tsu door. And, as for the characteristics to be provided as a curing net, dimensional stability, weather resistance, include etc. workability and net strong.

[0003] Curing nets are originally used to prevent materials from falling out and jumping out and to maintain the beauty of the workplace.

[0004] However, in recent years, in addition to the above-mentioned properties, attention has been paid to flame resistance. Curing meshes and curing sheets used as building materials have already been standardized for flameproofing, and there is a movement to standardize flameproofing for safety nets.

As a method for imparting flame resistance to a curing mesh, a curing sheet, a safety net, and the like, which are used as building materials, see, for example, JP-A-3-3636.
As disclosed in Japanese Patent Publication No. 7 (1995) -7, a method of applying a polyvinyl chloride resin by a method such as coating or topping is known. Further, since the polyvinyl chloride resin is easy to be colored, the resin is also used for coloring simultaneously with imparting flameproofness.

However, according to the above-mentioned conventional flame-retardant means, although the initial flame-retardant property is satisfied, the durable flame-retardant property is inferior by providing the polyvinyl chloride resin. The extent involved the problem of having to reapply the polyvinyl chloride resin. It goes without saying that, of course, a decrease in flame resistance also has an unfavorable effect on discoloration.

Further, when flame retardancy is imparted with a polyvinyl chloride resin, the amount of the polyvinyl chloride resin applied becomes considerably large and the net weight increases, so that the workability is greatly reduced. Was.

[0008]

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned conventional problems, to provide general characteristics as a curing net, to have excellent durable flameproofing performance, and to have discoloration. An object of the present invention is to provide a less-healing curing net.

[0009]

In order to achieve the above object, the curing net of the present invention comprises polyester fiber.
A curing net that is, the polyester textiles is,
0 with a bifunctional phosphorus compound gully down element content. 3 to 1.5 are weight percent copolymerized, and the pigment is 0. Contains 1 to 1.0% by weight
And wherein the fiber der Rukoto consisting been dyed polyester. And it is practically a vertical knitted net
Is preferred.

[0010] Polyester fibers constituting the curing net of the present invention, 80% of polyester repeat units than on, good
Preferably 90% or more, more preferably 95% or more
Polyethylene terephthalate, which is ethylene terephthalate
Fiber . Further, the intended purpose and as long as it does not compromise its <br/> action, other acid components or glycol components of the present invention
It may be copolymerized .

[0011] Examples of the copolymeric acid component include isophthalic acid and adipic acid. Further, as the copolymerized glycol component, tetramethylene glycol,
1,4 cyclohexanedimethanol, polyethylene glycol and the like can be mentioned.

The curing net according to the present invention can be manufactured, for example, by the following method.

In the polycondensation step of polyethylene terephthalate, the bifunctional phosphorus compound is added in an amount of 0.3 to 1.5% by weight, preferably 0.5 to 1.5% by weight, based on the whole polymer, as a phosphorus element.
It is added so as to contain 1.0% by weight, and a polyester chip having an intrinsic viscosity of 0.7 to 0.85 obtained by copolymerizing a bifunctional phosphorus compound is obtained. The addition amount of the bifunctional phosphorus compound,
If the phosphorus element content is less than 0.3% by weight, the flame resistance cannot be sufficiently improved.
It is not preferable because the strength and elongation of the polyester fiber are reduced, and furthermore, the light resistance cannot be improved.

Next, the polyester chip is
The solid phase polymerization is carried out at 0 to 225 ° C. and at a high temperature of 0.5 mmHg or less and under a high vacuum to obtain a base polyester chip having an intrinsic viscosity of 0.9 to 1.2.

On the other hand, colorants include organic pigments such as cyanine, styrene, phthalocyanine, anthraquinone, perinone, isoindolinone, quinophthalone, quinocridone and thioindigo pigments, and inorganic pigments. Of these, one or two or more are blended and mixed with a melted polyester chip before the solid phase polymerization to obtain a colored polyester chip.

[0016] The colored polyester chips are
Drying is performed at a high temperature of 200 ° C. or under a high vacuum of 0.5 mmHg or less to obtain a colored master polyester chip.

The pigment concentration in the chip is 10 to 30% by weight.
Is preferable. If the pigment concentration is less than 10% by weight, the desired coloring cannot be achieved, while if it is more than 30% by weight, the spinning properties are deteriorated and the strength of the raw yarn is undesirably reduced.

Next, the base polyester chip and the colored master polyester chip are mixed with each other from 10: 1 to 60:
1 in a ratio, melt-spinning at 250-330 ° C, heating the obtained polyester fiber to 190-240 ° C,
The film is hot-drawn 4.0 to 6.0 times, then relaxed by 1 to 10%, and wound up to obtain a polyester fiber having a denier of 500 or more and a filament of 30 to 400.

In order to obtain the flame-retardant polyester fiber of the present invention, it is important to incorporate a bifunctional phosphorus compound. The bifunctional phosphorus compound used herein is specifically It is a compound represented by the following formulas (1), (2) and (3).

[0020]

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[0021]

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[0022]

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[0023] (wherein, R _1, R ₅ is the same or different groups, represents a hydrocarbon group having 1 to 18 carbon atoms, R _2,
R ₃ is a same or different group, a hydrocarbon group or C1-18 represents a hydrogen atom, A ₁ is a divalent organic residue
Group, A ₂ represents a trivalent organic residue, R ₄ represents a carboxyl group or an ester thereof, R ₆ is a carboxyl group or <br/> is each other physician a its ester le -CO- via a group represented by CO- represents a divalent ester-forming functional groups that form a a ₂ and ring. ) The preferred examples of the bifunctional phosphorus compound of the formula (1) is a, and the like phenylphosphonic acid dimethyl or full Eniruhosuhon acid diphenyl.

Preferred specific examples of the bifunctional phosphorus compound in the above formula (2) include (2-carboxylethyl) methylphosphinic acid, (2-carboxylethyl) phenylphosphinic acid, and (2-methoxycarboxylethyl) phenyl Examples include methyl phosphinate, methyl (4-methoxycarboxylethyl) phenylphosphinate, and ethylene glycol ester of (2- (β-hydroxyethoxycarbonyl) ethyl) methylphosphinic acid.

Preferred specific examples of the bifunctional phosphorus compound in the above formula (3) include (1,2-dicarboxylethyl) phosphine oxide, (2,3-dicarboxylpropyl) dimethylphosphine oxide, 3
-Dimethoxycarbonylethyl) dimethylphosphine oxide and (1,2-di (β-hydroxyethoxycarbonyl) dimethylphosphine oxide.

Among the compounds represented by the above formulas (1), (2) and (3), the bifunctional phosphorus compound of the formula (2) has particularly good copolymerization reactivity with polyester and has a polycondensation reaction. It is more preferably used because scattering at the time is small.

The pigments contained in the polyester fiber include cyanine, styrene, phthalocyanine, and the like.
Anthoraquinones, perinones, isoindolinones,
Organic pigments such as quinophthalone-based, quinocridone-based, and thioindigo-based pigments, and inorganic pigments. By using these as a colorant, the light resistance of the polyester fiber can also be improved.

The strength of the polyester fiber constituting the curing net of the present invention is 6 g / d or more, preferably 7 g / d or more, and the elongation of 13% or more can be preferably used.

The intrinsic viscosity of the polyester fiber constituting the curing net is preferably 0.8 or more in order to improve strength and durability.

The cured net of the present invention can be obtained by using the above-mentioned polyester fiber, for example, for the front and back of a Russell knitting machine and knitting a net that is substantially warp-knitted. The resulting cured net has excellent flameproofing properties, discoloration resistance and durability, and exhibits particularly suitable performance for building materials.

[0031]

The present invention will now be described more specifically with reference to examples.

Examples 1-2 Bis-β-hydroxy terephthalate obtained by directly esterifying terephthalic acid and ethylene glycol, and 100 parts of a low polymer thereof, were treated with [2] as a bifunctional phosphorus compound.
-(Β-Hydroxyethoxycarbonyl) ethyl] methylphosphinic acid was added in an amount of phosphorus element shown in Table 1 to give 0.1%.
03 parts of antimony trioxide and 0.1 part of titanium dioxide were added, and the mixture was heated from 250 ° C to 285 ° C in 30 minutes.
And the pressure in the reaction system was reduced to 0.5 mmHg. Thereafter, the temperature and the degree of reduced pressure were maintained until the intrinsic viscosity reached 0.8, and the reaction was carried out.

The obtained polymer was dried at 2.0 mmHg for 10 hours, and then subjected to solid-state polymerization at 200 ° C. under 0.4 mmHg for 18 hours to obtain a base polyester chip having an intrinsic viscosity of 1.0.

On the other hand, a colorant obtained by melting a polymer having an intrinsic viscosity of 0.8 before the solid phase polymerization and mixing styrene-based yellow, cyanine-based blue and carbon in a weight ratio of 1: 1.5: 0.1. Was added to the polymer in an amount of 20% by weight to obtain a green polyester master chip. This green polyester master chip was dried at 150 ° C. and 3.0 mmHg for 8 hours to obtain a green master polyester chip.

The base polyester chips after the solid phase polymerization and the green master polyester chips were mixed at a ratio of 40: 1, and extruded through a circular discharge hole.
Then, after a drawing heat treatment of 5.6 times at a temperature of 250 ° C., a relaxation treatment was carried out at a relaxation rate of 5%, and a winding was performed to obtain a polyester filament yarn consisting of 1000 denier 192 filaments.

Using the obtained polyester filament yarn for the front and back of a Russell knitting machine,
After knitting a net of mm, the net was heat-set at 150 ° C. to obtain a cured net.

Table 1 also shows the results of the evaluation of the flame resistance, the flame resistance after washing, and the discoloration resistance of the obtained cured net by the following methods.

In Example 2, a curing net was obtained in the same manner as in Example 1, except that the amount of phosphorus element in Example 1 was 1.2% by weight.

(Evaluation method) Flameproof: Measured according to the D-2 method of JIS-L1091.

Flameproof after washing: The curing net is JIS-L0
After washing under the conditions of the 217 method 103, the measurement was carried out in the same manner as above.

Discoloration: 63 ° C. with a fade meter, 2
Discoloration after treatment for 00 hours was measured.

<Table 1> Item Unit Example 1 Example 2 Phosphorus element content% by weight 0.5 1.2 Flameproofness 4 or more 4 or more Flameproofness after washing 4 or more 4 or more Discoloration / discoloration grade 4 4 Comparative Examples 1 to 3 Example 1 except that diphenyl phenylphosphinate (1.0% by weight of phosphorus element) was added as a phosphorus compound.
A curing net was obtained in the same manner as in Comparative Example 1 (Comparative Example 1).

Further, after knitting a polyester fiber to which a phosphorus compound and a coloring master chip are not added, a green-colored vinyl chloride resin is added to the net weight by 4%.
The coating was applied by dipping at 0% by weight to obtain a curing net.

Example 1 was repeated except that the phosphorus compound and the colored master chip were not added and dyed after net knitting.
A curing net was obtained in the same manner as in (Comparative Example 3).

Table 2 shows the physical property evaluation results of these three types of curing nets.

<Table 2> Item Unit Comparative Example 1 Comparative Example 2 Comparative Example 3 Phosphorus element content% by weight 1.00 0 Flameproofing time 2 4 or more 2 Flameproofing time after washing 2 2 2 Discoloration grade 4 22 As is clear from the results of Tables 1 and 2, the curing net of the present invention (Examples 1 and 2) satisfies general characteristics to be provided as a curing net and has extremely good flameproofing properties. In addition, the durability is sufficiently satisfied.

On the other hand, Comparative Example 1 is poor in flame resistance, and Comparative Example 2 is satisfactory in the initial flame resistance, but is inferior in durability flame resistance and inferior in discoloration and discoloration.

Further, Comparative Example 3 has poor flameproofing properties.

[0049]

According to the curing net of the present invention, since the raw yarn itself has flameproofing properties, flameproofing by post-processing is not required, and it has durable flameproofing properties.

Further, since the raw yarn itself is soaked, the productivity in the post-processing can be greatly improved, and the discoloration and discoloration are superior to the post-dyed net.

Further, the weight can be reduced and the workability is good as compared with a post-processing flameproof net made of a vinyl chloride resin.

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ identification symbol FI D04B 21/00 D04B 21/00 B D04C 1/06 D04C 1/06 A (58) Fields surveyed (Int.Cl. ⁶ , DB (Name) E04G 21/02

Claims (2)

(57) [Claims] 1. A nutrient raw nets composed of polyester fibers, the polyester fibers, with a bifunctional phosphorus compound gully down element content 0. 3 to 1.5% by weight copolymerized
And the pigment is 0 . 1 to 1.0% by weight
Curing net and wherein the fiber der Rukoto consisting port Riesuteru. 2. A net which is substantially vertical knitted.
The curing net according to claim 1, wherein: