JPH06280167A - Adhesive-treatment of poly-p-phenylene benzobisoxazole fiber - Google Patents

Adhesive-treatment of poly-p-phenylene benzobisoxazole fiber

Info

Publication number
JPH06280167A
JPH06280167A JP9187893A JP9187893A JPH06280167A JP H06280167 A JPH06280167 A JP H06280167A JP 9187893 A JP9187893 A JP 9187893A JP 9187893 A JP9187893 A JP 9187893A JP H06280167 A JPH06280167 A JP H06280167A
Authority
JP
Japan
Prior art keywords
fiber
aqueous solution
pbo
rubber latex
rubber
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.)
Pending
Application number
JP9187893A
Other languages
Japanese (ja)
Inventor
Hiroto Yoshida
裕人 吉田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bridgestone Corp
Original Assignee
Bridgestone Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bridgestone Corp filed Critical Bridgestone Corp
Priority to JP9187893A priority Critical patent/JPH06280167A/en
Publication of JPH06280167A publication Critical patent/JPH06280167A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To improve the adhesivity of a poly-p-phenylene benzobisoxazole (PBO) fiber to a rubber by treating the surface of the PBO fiber with a specific polyurethane compound and subjecting the surface to a specific RFL treatment. CONSTITUTION:A polyurethane compound having >=2 terminal isocyanate groups is reacted and fixed in an amount of 0.01-0.5wt.% to the surface of a PBO fiber containing >=80% monomer recurring unit of formula I or formula II ((n) is number representing the repetition number of the unit). The treated fiber surface is coated with a mixture of RF with an aqueous solution of rubber latex satisfying the formulas 2<=F<=2.4 (F is molar ratio of formaldehyde to resorcinol) and 5<=L<=10 (L is weight ratio of the solid component of the aqueous solution of rubber latex to the RF condensate produced by reacting in the presence of an alkali catalyst) and the coated fiber is heat-treated at >=100 deg.C to remarkably improve the adhesivity of the fiber to a rubber. The rubber latex is e.g. a latex containing 40wt.% of a vinylpyridine-styrene-butadiene copolymer containing 10-30wt.% of vinylpyridine.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、ゴムとの接着性を改善
するポリ−p−フェニレンベンズビスオキサゾール(以
下「PBO」と略記する)繊維の接着剤処理方法に関す
るものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adhesive treatment method for poly-p-phenylenebenzbisoxazole (hereinafter abbreviated as "PBO") fibers for improving adhesiveness to rubber.

【0002】[0002]

【従来の技術】従来より高強度繊維の代表としてアラミ
ド繊維が知られており、今日かかる繊維はタイヤを始め
とする各種ゴム物品等の補強材として幅広く使用されて
いる。しかし、アラミド繊維は炭素繊維と比較するとモ
ジュラスが低いという特性がある。そこで、近年、炭素
繊維のモジュラスとアラミド繊維の強度およびハンドリ
ング性を合わせ持つ繊維が要求されるようになってきて
おり、そのような中でヘテロ環含有芳香族ポリマー繊
維、特にPBO繊維が注目されるに至っている(Mat.Re
s.Soc.Symp.Proc., W.Wade Adams et. al. ,Vol 134 ,p
p 254-265 )。
2. Description of the Related Art Conventionally, aramid fibers have been known as a representative of high-strength fibers, and today such fibers are widely used as a reinforcing material for various rubber articles such as tires. However, aramid fiber has a characteristic that its modulus is lower than that of carbon fiber. Therefore, in recent years, a fiber having both the modulus of carbon fiber and the strength and handling property of aramid fiber has been demanded. Among them, a heterocycle-containing aromatic polymer fiber, particularly a PBO fiber has been attracting attention. (Mat.Re
s.Soc.Symp.Proc., W. Wade Adams et. al., Vol 134, p
p 254-265).

【0003】[0003]

【発明が解決しようとする課題】しかしながら、PBO
繊維は従来の有機繊維より高強力、高モジュラスではあ
るものの、PBOが極めて結晶性が高く微細構造が緻密
であり、レゾルシン・ホルムアルデヒド縮合物/ラテッ
クス(以下「RFL」と略記する)接着剤中のレゾルシ
ン・ホルムアルデヒド縮合物(以下「RF」と略記す
る)成分との間に一次結合および二次結合を含めて殆ど
何らの結合をも生じないため、一般的なRFL接着剤処
理を施してもゴムとは殆ど接着しないという問題があっ
た。
However, the PBO
Although the fiber has higher strength and higher modulus than the conventional organic fiber, PBO has extremely high crystallinity and a fine microstructure, and therefore, in a resorcin / formaldehyde condensate / latex (hereinafter abbreviated as "RFL") adhesive. Almost no bonding, including primary bonding and secondary bonding, occurs between the resorcinol-formaldehyde condensate (hereinafter abbreviated as "RF") component, and therefore rubber can be treated with a general RFL adhesive. There was a problem that it hardly adhered to.

【0004】この結果、PBO繊維は未だタイヤ等のゴ
ム物品の補強用としては使用し得ないのが現状である。
As a result, PBO fibers cannot be used for reinforcing rubber articles such as tires at present.

【0005】そこで、本発明の目的は、ゴムに対して優
れた接着性を発揮し得るようにする、PBO繊維の接着
剤処理方法を提供することにある。
Therefore, an object of the present invention is to provide an adhesive treatment method for PBO fibers, which is capable of exhibiting excellent adhesiveness to rubber.

【0006】[0006]

【課題を解決するための手段】本発明者は、PBO繊維
の上記課題を解決すべく、すなわちゴムとの接着性を向
上させるべく鋭意研究を重ねた結果、PBO繊維に、末
端イソシアネート基を2個以上有するポリウレタン化合
物による表面処理を施し、次いで特定のRFL接着剤処
理を施すことにより上記目的を達成することができるこ
とを見出し、本発明を完成するに至った。
Means for Solving the Problems The inventors of the present invention have conducted extensive studies to solve the above problems of PBO fibers, that is, to improve the adhesiveness with rubber. The inventors have found that the above object can be achieved by subjecting a surface of the polyurethane compound having at least one to a surface treatment and then a specific RFL adhesive treatment, and completed the present invention.

【0007】すなわち、本発明のPBO繊維の接着剤処
理方法は、次の一般式、
That is, the PBO fiber adhesive treatment method of the present invention comprises the following general formula:

【化2】 (式中、nは繰り返しを示す正の整数を示す)で表され
る単量体繰り返し単位を分子内に80%以上有するPB
O繊維の繊維表面に、末端イソシアネート基を分子内に
少なくとも2個以上有するポリウレタン化合物を0.0
1〜0.5重量%反応固着させ、次いでこの反応物に、
レゾルシンに対するホルムアルデヒドのモル比Fが次
式、 1.2≦F≦2.4 で表させる関係を満足し、かつアルカリ触媒の存在下に
反応させてなるレゾルシン・ホルムアルデヒド縮合物に
対するゴムラテックス水溶液の固形分重量比Lが次式、 5≦L≦10 で表させる関係を満足する、RFとゴムラテックス水溶
液との混合物を付着させ、これを100℃以上の温度で
熱処理することを特徴とするものである。
[Chemical 2] PB having 80% or more of monomer repeating units represented by the formula (wherein n represents a positive integer indicating repetition) in the molecule
0.0% of a polyurethane compound having at least two terminal isocyanate groups in the molecule is formed on the fiber surface of the O fiber.
1-0.5% by weight reaction-fixed and then to this reaction mass,
The molar ratio F of formaldehyde to resorcin satisfies the relationship expressed by the following formula: 1.2 ≦ F ≦ 2.4, and the solid of the rubber latex aqueous solution to the resorcin-formaldehyde condensate obtained by reacting in the presence of an alkali catalyst. It is characterized in that a mixture of RF and an aqueous solution of rubber latex, which has a weight-to-weight ratio L satisfying the relation expressed by the following formula, 5 ≦ L ≦ 10, is adhered and heat-treated at a temperature of 100 ° C. or higher. is there.

【0008】PBOは、上記式で表せるようにシス−P
BO、すなわちポリ[ベンゾ(1,2−d:5,4−
d’)ビスオキサゾール−2,6−ジイル−1,4−フ
ェニレン]とトランス−PBO、すなわちポリ[ベンゾ
(1,2−d:4,5−d’)ビスオキサゾール−2,
6−ジイル−1,4−フェニレン]とがあるが、本発明
の処理はいずれのPBOにも限定されるべきものではな
い。
PBO is a cis-P as expressed by the above formula.
BO, that is, poly [benzo (1,2-d: 5,4-
d ′) bisoxazole-2,6-diyl-1,4-phenylene] and trans-PBO, that is, poly [benzo (1,2-d: 4,5-d ′) bisoxazole-2,
6-diyl-1,4-phenylene], but the process of the present invention should not be limited to any PBO.

【0009】上記ポリウレタン化合物としては、次の一
般式、
The above-mentioned polyurethane compound has the following general formula:

【化3】 (式中、R1,R2は炭素数1〜20の炭化水素基、Mは
封鎖剤である)で表される反応性ポリウレタン樹脂を挙
げることができ、水溶性であれば直鎖、分枝鎖、芳香族
の別を問わない。なお、封鎖剤Mは強力な水酸基、例え
ばカルバモイルスルホネート基(−NHCOSO3
a)等が好ましい。
[Chemical 3] (In the formula, R 1 and R 2 are hydrocarbon groups having 1 to 20 carbon atoms, and M is a blocking agent). It may be branched or aromatic. The blocking agent M is a strong hydroxyl group, for example, a carbamoyl sulfonate group (-NHCOSO 3 N
a) and the like are preferable.

【0010】かかるポリウレタン化合物をPBO繊維の
表面に反応・固着させる一好適例を以下に示す。まず、
末端イソシアネート基の封鎖剤として強い親水基のもの
を使用して、かかるポリウレタン化合物をそのまま水に
溶解させるか、あるいは適当な界面活性剤を用いて水に
可溶化させ、得られた水溶液にPBO繊維を浸漬する
か、該水溶液をPBO繊維にスプレーする。
A preferred example of reacting and fixing such a polyurethane compound on the surface of PBO fiber is shown below. First,
Using a strongly hydrophilic group as a blocking agent for the terminal isocyanate group, such a polyurethane compound is dissolved in water as it is, or solubilized in water using an appropriate surfactant, and PBO fiber is added to the resulting aqueous solution. Is dipped or the aqueous solution is sprayed onto the PBO fibers.

【0011】次いで、このPBO繊維を100℃以上の
温度において熱処理することにより、前記範囲内の量の
上記ポリウレタン化合物をPBO繊維の表面に反応固着
させる。
Next, the PBO fiber is heat-treated at a temperature of 100 ° C. or higher, so that the amount of the polyurethane compound within the above range is reactively fixed to the surface of the PBO fiber.

【0012】ポリウレタン化合物の反応固着量は、上述
のポリウレタン化合物水溶液中のポリウレタン化合物の
濃度および該水溶液のPBO繊維に対する使用量比、熱
処理の温度および時間等を変えることで制御することが
でき、これらの中で最適な条件を選べばよい。
The reaction sticking amount of the polyurethane compound can be controlled by changing the concentration of the polyurethane compound in the aqueous solution of the polyurethane compound, the ratio of the amount of the aqueous solution to the PBO fiber used, the temperature and the time of the heat treatment, etc. You can choose the most suitable condition from among them.

【0013】次に、本発明で使用するRFとゴムラテッ
クス水溶液との混合物(以下「RFL水溶液」と略記す
る)の調製方法の一例を以下に示す。まず、水酸化ナト
リウム、水酸化カリウム、水酸化アンモニウム、尿素等
のアルカリ触媒をレゾルシン1モルに対して0.1〜
0.4モル加えて、レゾルシンとホルムアルデヒドとを
1:1.2〜2.4のモル比で室温にて数時間、好まし
くは6〜10時間反応させてRFを得る。
Next, an example of a method for preparing a mixture of RF and an aqueous solution of rubber latex (hereinafter abbreviated as "RFL aqueous solution") used in the present invention is shown below. First, an alkali catalyst such as sodium hydroxide, potassium hydroxide, ammonium hydroxide, or urea is added in an amount of 0.1 to 0.1 mol of resorcin.
0.4 mol is added, and resorcin and formaldehyde are reacted at a molar ratio of 1: 1.2 to 2.4 at room temperature for several hours, preferably 6 to 10 hours to obtain RF.

【0014】次いで、得られたRFを、ゴムラテックス
水溶液と固形分重量比1:5〜10の割合で混合し、更
に数時間、好ましくは14時間以上室温にて熟成させ、
これにより所望のRFL水溶液を得ることができる。
Next, the obtained RF is mixed with a rubber latex aqueous solution in a solid content weight ratio of 1: 5 to 10 and aged for several hours, preferably 14 hours or more at room temperature.
As a result, a desired RFL aqueous solution can be obtained.

【0015】ここで、RFと混合するゴムラテックス水
溶液は、PBO繊維とゴムとの良好な接着を実現する上
で、ビニルピリジンを10〜30重量%含むビニルピリ
ジン・スチレン・ブタジエン共重合体を40重量%以上
含むことが好ましい。
Here, the rubber latex aqueous solution mixed with RF is 40% vinyl pyridine / styrene / butadiene copolymer containing 10 to 30% by weight of vinyl pyridine in order to achieve good adhesion between the PBO fiber and the rubber. It is preferable that the content is at least wt%.

【0016】また、上記RFL水溶液に用いるゴムラテ
ックス水溶液としては、ビニルピリジン・スチレン・ブ
タジエン共重合体ゴムラテックスの他に、スチレン・ブ
タジエン共重合体ゴムラテックス、天然ゴムラテック
ス、その他の合成ゴムラテックスの2種以上の混合ラテ
ックスを使用してもよい。
Examples of the rubber latex aqueous solution used for the RFL aqueous solution include vinyl pyridine / styrene / butadiene copolymer rubber latex, styrene / butadiene copolymer rubber latex, natural rubber latex, and other synthetic rubber latex. You may use the mixed latex of 2 or more types.

【0017】上述のようにしてポリウレタン化合物を反
応固着させたPBO繊維に上記RFL水溶液を付着させ
る方法としては、繊維をRFL水溶液に浸漬させる方
法、RFL水溶液をドクターナイフ等で繊維に塗布する
方法、または繊維にRFL水溶液をスプレーする方法
等、所要に応じて適当に選択することができる。
As the method for adhering the RFL aqueous solution to the PBO fiber to which the polyurethane compound has been reactively fixed as described above, the fiber may be immersed in the RFL aqueous solution, the RFL aqueous solution may be applied to the fiber with a doctor knife or the like, Alternatively, a method of spraying the RFL aqueous solution on the fiber or the like can be appropriately selected as required.

【0018】上記RFL水溶液の付着量は、PBO繊維
に対して乾燥後のRFL水溶液の固体ベースで4〜15
重量%に制御することが好ましい。
The amount of the above-mentioned RFL aqueous solution attached is 4 to 15 on a solid basis of the RFL aqueous solution after being dried with respect to the PBO fiber.
It is preferable to control to the weight%.

【0019】RFL水溶液を上述のようにしてPBO繊
維に付着させた後は、該PBO繊維を、例えば200〜
270℃の温度で30〜240秒間熱処理することによ
り接着性に優れたPBO繊維を得ることができる。
After the RFL aqueous solution is attached to the PBO fiber as described above, the PBO fiber is added to, for example, 200 to
By heat-treating at a temperature of 270 ° C. for 30 to 240 seconds, PBO fibers having excellent adhesiveness can be obtained.

【0020】[0020]

【作用】本発明においては、PBO繊維の繊維表面に反
応固着させるポリウレタン化合物量が0.01〜0.5
重量%、好ましくは0.05〜0.4重量%である。こ
の反応固着量が0.01重量%未満および0.5重量%
超過のいずれの場合もゴムとの接着性が低下し、本発明
の目的を達成することができない。
In the present invention, the amount of the polyurethane compound that is reactively fixed to the fiber surface of the PBO fiber is 0.01 to 0.5.
%, Preferably 0.05 to 0.4% by weight. This reaction sticking amount is less than 0.01% by weight and 0.5% by weight
In either case, the adhesiveness with rubber is lowered and the object of the present invention cannot be achieved.

【0021】また、本発明においては、PBO繊維とポ
リウレタン化合物との反応物に付着させるRFL水溶液
において、レゾルシンに対するホルムアルデヒドのモル
比Fが次式、 1.2≦F≦2.4 で表させる関係を満足する必要がある。モル比Fが1.
2未満であると、RF架橋が少なく、RFL強度が不足
して接着力が低く、一方2.4を超えるとRF架橋が密
になり過ぎ、やはり接着力が低下する。
In the present invention, the molar ratio F of formaldehyde to resorcin in the RFL aqueous solution attached to the reaction product of the PBO fiber and the polyurethane compound is expressed by the following equation: 1.2≤F≤2.4. Need to be satisfied. The molar ratio F is 1.
When it is less than 2, the RF cross-linking is small and the RFL strength is insufficient, so that the adhesive strength is low. On the other hand, when it is more than 2.4, the RF cross-linking becomes too dense and the adhesive strength is also lowered.

【0022】さらに、このRFL水溶液において、アル
カリ触媒の存在下に反応させてなるRFに対するゴムラ
テックス水溶液の固形分重量比Lが次式、 5≦L≦10 で表させる関係を満足する必要がある。固形分重量比L
が5未満の場合および10を超える場合のいずれの場合
も接着力の低下を来たすことになる。
Further, in this RFL aqueous solution, the weight ratio L of the solid content of the rubber latex aqueous solution to the RF obtained by the reaction in the presence of an alkali catalyst must satisfy the relation expressed by the following equation: 5≤L≤10. . Solid content weight ratio L
In any of the cases of less than 5 and more than 10, the adhesive strength is lowered.

【0023】かかるRFL水溶液のPBO繊維に対する
乾燥後の固体ベースでの好適付着量を4〜15重量%と
するのは、4重量%未満ではゴムとの接着性が悪くな
り、一方15重量%を超えるとべたつきが激しくなり作
業性が悪化し、接着性も低下するからである。
The preferable amount of the RFL aqueous solution deposited on the PBO fiber after drying on a solid basis is 4 to 15% by weight. When the amount is less than 4% by weight, the adhesion to rubber becomes poor, while the amount of 15% by weight is reduced. If it exceeds the range, the stickiness becomes severe, the workability deteriorates, and the adhesiveness also decreases.

【0024】上記RFL水溶液をPBO繊維に付着させ
た後は、これを100℃以上の温度で熱処理すること
で、ゴムとの接着性に優れたPBO繊維を得ることがで
きる。
After the RFL aqueous solution is attached to the PBO fiber, the PBO fiber is heat-treated at a temperature of 100 ° C. or higher to obtain a PBO fiber having excellent adhesion to rubber.

【0025】[0025]

【実施例】次に本発明を実施例により具体的に説明す
る。以下の実施例および比較例においてはシス−PBO
繊維を使用した。
EXAMPLES Next, the present invention will be specifically described by way of examples. In the examples and comparative examples below, cis-PBO is used.
Fiber was used.

【0026】また、実施例および比較例において得られ
た接着剤処理PBO繊維コードは、次のようにしてゴム
との接着性を評価した。まず、接着剤処理PBO繊維コ
ードを下記の表1に示す配合内容の未加硫ゴム組成物に
埋め込み、130℃で20分間加硫し、得られた加硫物
からコードを掘り起こし、300mm/分の速度にて引
っ張って加硫物から剥離し、コード1本あたりの剥離抗
力を求めて、これを接着力(kg/本)とした。
The adhesive-treated PBO fiber cords obtained in Examples and Comparative Examples were evaluated for adhesiveness with rubber as follows. First, the adhesive-treated PBO fiber cord was embedded in an unvulcanized rubber composition having the composition shown in Table 1 below, vulcanized at 130 ° C. for 20 minutes, and the cord was dug up from the obtained vulcanized product to 300 mm / min. Was peeled from the vulcanized product by pulling at a speed of 1, and the peeling resistance per cord was determined, and this was defined as the adhesive force (kg / bar).

【0027】[0027]

【表1】 [Table 1]

【0028】実施例1 ポリエポキシ化合物としてジグリセロールトリグリシジ
ルエーテルを用い、下記組成の水溶液を調製した。 重量% ジフェニルメタンジイソシアネートの カルバモイル・スルホネートブロック物 2.0 蒸留水 98.0
Example 1 An aqueous solution having the following composition was prepared using diglycerol triglycidyl ether as a polyepoxy compound. Carbamoyl sulfonate block product of diphenylmethane diisocyanate in weight% 2.0 Distilled water 98.0

【0029】このポリウレタン化合物水溶液にリッツラ
ー社製コンピュトリーターを用いてPBO繊維を浸漬
し、次いでこのコードを130℃で60秒間乾燥炉に通
した後、240℃で60秒間熱処理炉に通し、しかる後
RFL水溶液に浸漬した。このRFL水溶液は、下記組
成の混合物を室温で6時間熟成させた後、これにビニル
ピリジン15重量%含有のビニルピリジン・スチレン・
ブタジエン共重合体ゴムラテックス(41%)42.8
重量%を加え、更に18時間熟成して得た。
The PBO fiber was immersed in this aqueous solution of polyurethane compound using a Computator manufactured by Ritzler Co., and then the cord was passed through a drying furnace at 130 ° C. for 60 seconds, and then through a heat treatment furnace at 240 ° C. for 60 seconds, and thereafter. It was immersed in an RFL aqueous solution. This RFL aqueous solution was prepared by aging a mixture having the following composition for 6 hours at room temperature, and then adding vinylpyridine / styrene / vinylpyridine / styrene / containing 15% by weight of vinylpyridine.
Butadiene copolymer rubber latex (41%) 42.8
It was obtained by adding 18% by weight and further aging for 18 hours.

【0030】 重量% 蒸留水 52.0 レゾルシン 1.8 ホルマリン(ホルムアルデヒド37%水溶液) 2.3 10%水酸化ナトリウム水溶液 1.1 ビニルピリジンラテックス 42.8 [0030]weight% Distilled water 52.0 Resorcin 1.8 Formalin (formaldehyde 37% aqueous solution) 2.3  10% sodium hydroxide aqueous solution 1.1  Vinyl pyridine latex 42.8

【0031】上記RFL水溶液に浸漬したコードを再度
160℃の乾燥炉に60秒間通した後、240℃の熱処
理炉に60秒間通して、接着剤処理加工を施したPBO
繊維コードを得た。
The cord dipped in the RFL aqueous solution was again passed through a drying oven at 160 ° C. for 60 seconds and then through a heat treatment oven at 240 ° C. for 60 seconds, and the adhesive-treated PBO was applied.
I got a fiber cord.

【0032】なお、レゾルシンに対するホルムアルデヒ
ドのモル比FおよびRFに対するゴムラテックス水溶液
の固形分重量比は夫々1.73および6.6であった。
The molar ratios F of formaldehyde to resorcin and the solid weight ratio of the aqueous solution of rubber latex to RF were 1.73 and 6.6, respectively.

【0033】実施例2 ポリウレタン化合物としてジフェニルメタンイソシアネ
ートのカルバモイル・スルホネートブロック物を用い、
下記組成の水溶液を調製してポリウレタン化合物の反応
固着量のみを変更した外はすべて実施例1と同様の条件
にて、接着剤処理PBO繊維コードを得た。
Example 2 A carbamoyl sulfonate block of diphenylmethane isocyanate was used as a polyurethane compound,
An adhesive-treated PBO fiber cord was obtained under the same conditions as in Example 1, except that an aqueous solution having the following composition was prepared and only the amount of the reaction fixation of the polyurethane compound was changed.

【0034】 重量% ジフェニルメタンジイソシアネートの カルバモイル・スルホネートブロック物 3.5 蒸留水 96.5 Carbamoyl sulfonate block product of wt% diphenylmethane diisocyanate 3.5 Distilled water 96.5

【0035】比較例 実施例1におけるポリウレタン化合物に関する処理を行
わなかった以外はすべて実施例1と同様の条件にて、接
着剤処理PBO繊維コードを得た。上述のようにして得
られた各接着剤処理PBO繊維コードに対するポリウレ
タン化合物の反応固着量およびRFL水溶液固形分の付
着量並びにゴムに対する接着力を下記の表2に示す。
Comparative Example An adhesive-treated PBO fiber cord was obtained under the same conditions as in Example 1 except that the treatment for the polyurethane compound in Example 1 was not performed. Table 2 below shows the reaction sticking amount of the polyurethane compound to each adhesive-treated PBO fiber cord obtained as described above, the adhesion amount of the RFL aqueous solution solid content, and the adhesive force to the rubber.

【0036】[0036]

【表2】 [Table 2]

【0037】上記表2により、本発明の接着剤処理を施
したPBO繊維コードは十分な接着力が得られることが
確かめられた。
From the above Table 2, it was confirmed that the PBO fiber cord treated with the adhesive of the present invention can obtain a sufficient adhesive force.

【0038】[0038]

【発明の効果】以上説明してきたように本発明のPBO
繊維の接着剤処理方法においては、PBO繊維に、末端
イソシアネート基を2個以上有するポリウレタン化合物
による表面処理を施し、次いで特定のRFL接着剤処理
を施すことにより、これまでPBO繊維のゴム製品への
利用における大きな問題点であったゴムとの接着性を大
幅に向上させることができるようになった。
As described above, the PBO of the present invention
In the fiber adhesive treatment method, a PBO fiber is subjected to a surface treatment with a polyurethane compound having two or more terminal isocyanate groups, and then a specific RFL adhesive treatment is performed to obtain a PBO fiber rubber product. It became possible to greatly improve the adhesiveness with rubber, which was a major problem in use.

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 FI 技術表示箇所 D06M 15/693 // D06M 101:18 D06M 15/693 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification code Internal reference number FI Technical display location D06M 15/693 // D06M 101: 18 D06M 15/693

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 次の一般式、 【化1】 (式中、nは繰り返しを示す正の整数を示す)で表され
る単量体繰り返し単位を分子内に80%以上有するポリ
−p−フェニレンベンズビスオキサゾールの繊維表面
に、末端イソシアネート基を分子内に少なくとも2個以
上有するポリウレタン化合物を0.01〜0.5重量%
反応固着させ、次いでこの反応物に、レゾルシンに対す
るホルムアルデヒドのモル比Fが次式、 1.2≦F≦2.4 で表させる関係を満足し、かつアルカリ触媒の存在下に
反応させてなるレゾルシン・ホルムアルデヒド縮合物に
対するゴムラテックス水溶液の固形分重量比Lが次式、 5≦L≦10 で表させる関係を満足する、レゾルシン・ホルムアルデ
ヒド縮合物とゴムラテックス水溶液との混合物を付着さ
せ、これを100℃以上の温度で熱処理することを特徴
とするポリ−p−フェニレンベンズビスオキサゾール繊
維の接着剤処理方法。
1. The following general formula: (In the formula, n represents a positive integer indicating repetition) A poly (p-phenylenebenzbisoxazole) having 80% or more of the monomer repeating unit in the molecule has a terminal isocyanate group on the fiber surface. 0.01-0.5% by weight of a polyurethane compound having at least two
Resorcinol obtained by reaction-fixing, and then reacting the reaction product in the presence of an alkali catalyst, and the molar ratio F of formaldehyde to resorcin satisfies the relationship expressed by the following formula: 1.2 ≦ F ≦ 2.4. A mixture of a resorcinol-formaldehyde condensate and a rubber latex aqueous solution, which has a solid content weight ratio L of the aqueous solution of rubber latex to the formaldehyde condensate satisfying the relationship represented by the following formula, 5 ≦ L ≦ 10, is adhered to 100 A method for treating an adhesive of poly-p-phenylenebenzbisoxazole fiber, which comprises heat-treating at a temperature of ℃ or more.
【請求項2】 レゾルシン・ホルムアルデヒド縮合物と
混合するゴムラテックス水溶液が、ビニルピリジンを1
0〜30重量%含むビニルピリジン・スチレン・ブタジ
エン共重合体を40重量%以上含む請求項1記載の接着
剤処理方法。
2. A rubber latex aqueous solution mixed with a resorcin-formaldehyde condensate contains vinylpyridine in an amount of 1.
The adhesive treatment method according to claim 1, further comprising 40 wt% or more of a vinyl pyridine-styrene-butadiene copolymer containing 0 to 30 wt%.
JP9187893A 1993-03-29 1993-03-29 Adhesive-treatment of poly-p-phenylene benzobisoxazole fiber Pending JPH06280167A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9187893A JPH06280167A (en) 1993-03-29 1993-03-29 Adhesive-treatment of poly-p-phenylene benzobisoxazole fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9187893A JPH06280167A (en) 1993-03-29 1993-03-29 Adhesive-treatment of poly-p-phenylene benzobisoxazole fiber

Publications (1)

Publication Number Publication Date
JPH06280167A true JPH06280167A (en) 1994-10-04

Family

ID=14038823

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9187893A Pending JPH06280167A (en) 1993-03-29 1993-03-29 Adhesive-treatment of poly-p-phenylene benzobisoxazole fiber

Country Status (1)

Country Link
JP (1) JPH06280167A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002070323A (en) * 2000-08-31 2002-03-08 Chishin Go Concrete structural body reinforcing method and reinforced concrete structural body
US6908676B2 (en) 2001-01-25 2005-06-21 Unitta Company Transmission belt and method of treatment for bonding with poly-p-phenylene benzobisoxazole fiber
CN102808325A (en) * 2012-07-10 2012-12-05 西北工业大学 Surface modifying method of PBO (polybenzoxazole) fiber

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002070323A (en) * 2000-08-31 2002-03-08 Chishin Go Concrete structural body reinforcing method and reinforced concrete structural body
US6908676B2 (en) 2001-01-25 2005-06-21 Unitta Company Transmission belt and method of treatment for bonding with poly-p-phenylene benzobisoxazole fiber
CN102808325A (en) * 2012-07-10 2012-12-05 西北工业大学 Surface modifying method of PBO (polybenzoxazole) fiber

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