JPS6111902B2 - - Google Patents
Info
- Publication number
- JPS6111902B2 JPS6111902B2 JP57128267A JP12826782A JPS6111902B2 JP S6111902 B2 JPS6111902 B2 JP S6111902B2 JP 57128267 A JP57128267 A JP 57128267A JP 12826782 A JP12826782 A JP 12826782A JP S6111902 B2 JPS6111902 B2 JP S6111902B2
- Authority
- JP
- Japan
- Prior art keywords
- paper
- calcium silicate
- flame
- weight
- retardant
- 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.)
- Expired
Links
- 229910052918 calcium silicate Inorganic materials 0.000 claims description 30
- 239000000378 calcium silicate Substances 0.000 claims description 30
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 claims description 30
- 239000003063 flame retardant Substances 0.000 claims description 21
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 19
- 239000011163 secondary particle Substances 0.000 claims description 14
- 239000000654 additive Substances 0.000 claims description 5
- 239000002657 fibrous material Substances 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- 239000010456 wollastonite Substances 0.000 claims description 2
- 229910052882 wollastonite Inorganic materials 0.000 claims description 2
- 239000000123 paper Substances 0.000 description 52
- 239000002002 slurry Substances 0.000 description 15
- 239000000835 fiber Substances 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 239000013078 crystal Substances 0.000 description 8
- 239000010425 asbestos Substances 0.000 description 5
- 238000010009 beating Methods 0.000 description 5
- 239000000919 ceramic Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 229910052895 riebeckite Inorganic materials 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 239000004113 Sepiolite Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 229910052624 sepiolite Inorganic materials 0.000 description 4
- 235000019355 sepiolite Nutrition 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 101100365011 Arabidopsis thaliana SCL33 gene Proteins 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- 229920003043 Cellulose fiber Polymers 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- UGGQKDBXXFIWJD-UHFFFAOYSA-N calcium;dihydroxy(oxo)silane;hydrate Chemical compound O.[Ca].O[Si](O)=O UGGQKDBXXFIWJD-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000001027 hydrothermal synthesis Methods 0.000 description 2
- 239000010985 leather Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 240000000907 Musa textilis Species 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 235000012255 calcium oxide Nutrition 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011162 core material Substances 0.000 description 1
- 239000007799 cork Substances 0.000 description 1
- BCAARMUWIRURQS-UHFFFAOYSA-N dicalcium;oxocalcium;silicate Chemical compound [Ca+2].[Ca+2].[Ca]=O.[O-][Si]([O-])([O-])[O-] BCAARMUWIRURQS-UHFFFAOYSA-N 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 239000012772 electrical insulation material Substances 0.000 description 1
- 239000003623 enhancer Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 1
- 239000000391 magnesium silicate Substances 0.000 description 1
- 229910052919 magnesium silicate Inorganic materials 0.000 description 1
- 235000019792 magnesium silicate Nutrition 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 229910052625 palygorskite Inorganic materials 0.000 description 1
- 239000011088 parchment paper Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 239000011164 primary particle Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 229920006174 synthetic rubber latex Polymers 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 229910021534 tricalcium silicate Inorganic materials 0.000 description 1
- 235000019976 tricalcium silicate Nutrition 0.000 description 1
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Paper (AREA)
Description
本発明は不燃乃至難燃紙に関し、更に詳しく
は、山皮と珪酸カルシウムとを主成分とする紙に
関する。
紙は現在各分野に亘り広い範囲で使用されてお
り、不燃乃至難燃性で柔軟性及び引張強さに優れ
た紙の開発が強く要望されるものである。従来よ
り不燃乃至難燃紙として、山皮紙、石綿紙及びセ
ラミツクフアイバー紙等があるが、かかる不燃乃
至難燃紙には一長一短があり、上記性能を全て具
備したものがないのが現状である。たとえば山皮
紙では難燃性、柔軟性には優れているが、引張強
さが低く、石綿紙では難燃性、引張強さは優れて
いるが、柔軟性に問題があり、折り曲げると表面
に割れが生じ、さらに高価で環境衛生面からも望
ましくない。またセラミツクフアイバー紙は難燃
性には優れているが、引張強さが低くしかも高価
である等の問題がる。また上記石綿及びセラミツ
クフアイバーは、これ等単独では紙とならず、従
つて無機質あるいは有機質のバインダーを用いて
紙を形成しているものであるが、山皮では何らこ
れ等のバインダーを加えることなく紙を形成出来
るという優れた性質を有するのである。
而して、従来のこれ等不燃乃至難燃紙の各欠点
を解消し、不燃乃至難燃性に優れ、且つ柔軟性に
富み、引張強さの優れた紙が強く要望されるよう
になつてきた。
本発明者らは上記要望に充分応え得る不燃乃至
難燃紙を開発すべく研究を続けて来たが、この研
究に於いて、山皮に珪酸カルシウムを混合するこ
とによつて、何らバインダーを加えることなく紙
を形成出来るという山皮の優れた性質を毫も損う
ことなく、しかも難燃性、柔軟性及び引張強さの
優れた所期の目的に合致する新しい不燃乃至難燃
紙の開発に成功し、茲に本発明を完成した。即
ち、本発明は、(イ)山皮と珪酸カルシウムの二次粒
子とが、またはこれ等と更に繊維質物質（但し山
皮を除く）とが、からまり合い乍ら圧縮変形され
た状態で連結し、且つ山皮と珪酸カルシウムの合
計含量が60重量％以上でその比率が山皮100重量
部に対して珪酸カルシウムが10〜100重量部であ
つて、(ロ)上記連結状態は、紙を折り曲げた場合に
その表面に割れを生じないことを特徴とする不燃
乃至難燃紙に係るものである。
本発明の不燃乃至難燃紙は次の各点で特長づけ
られる。即ち山皮と珪酸カルシウムの二次粒子と
が、又これ等と更に繊維質物質とがからまり合い
ながら圧縮変形された状態で連結していることで
ある。この圧縮変形された状態としては上記二次
粒子の形態がかなりはつきりと残存している程度
から該二次粒子が著しく圧縮変形されてほとんど
扁平化してもとの二次粒子の形をほとんど残さな
い程度にまで変形された状態まで包含される。
次いで本発明の紙の第２の特徴として山皮と珪
酸カルシウムの合計含量が60重量％以上で、その
比率が山皮100重量部に対して珪酸カルシウムが
10〜100重量部であることである。
本発明の紙は山皮と珪酸カルシウムが主原料で
あつて紙の填料として使用されているものではな
く、その含有量も60重量％以上である点に大きな
特長があり、繊維質物質はあくまで副原料であ
り、何ら該繊維質物質を用いなくてもよい。
本発明者らの研究した所によると、山皮と珪酸
カルシウムの合計含量が60重量％以下になると使
用する繊維によつて、特に有機質繊維を用いた場
合JIS Ａ 1322の難燃性試験に於いて不合格とな
り、又山皮と珪酸カルシウムの比率が山皮100重
量部に対して珪酸カルシウムが10重量部以下にな
ると引張強さが著しく低下し、同じく珪酸カルシ
ウムが100重量部以上になると紙を折り曲げた場
合にその表面に割れが生じるようになり、本発明
の所期の目的に合致しなくなる。
第３番目の本発明の紙の特長として、山皮及び
繊維質物質と又は山皮と珪酸カルシウムの二次粒
子との連結状態が次の点で規定されていることで
ある。先ず本発明の紙を折り曲げた場合にその表
面に割れが生じないということである。この特長
は本発明の紙の柔軟性乃至しなやかさを示してい
る。第４番目の本発明の紙の特徴として不燃乃至
難燃性の紙であることである。即ち、上記した
JIS Ａ 1322の難燃性試験に於いて、少くとも防
炎３級に合格するものである。
第５番目の本発明の紙の特長として抄紙方向で
の裂断長が0.3Km以上であるということである。
茲で裂断長は次の式で表わされる。
裂断長（Km）＝引張り強さ（Kg）／１５（mm）×坪
量（ｇ／m2）×1000
また本発明の紙は次の様な性質を有している。
まずその厚さは通常１mm以下程度であり、その坪
量は400g／m2以下である。
本発明の不燃乃至難燃紙を調製するに際して
は、山皮と珪酸カルシウムの二次粒子とが水に分
散した水性スラリーに、必要に応じて繊維質物質
を添加し、混合し、次いで得られる紙中の山皮と
珪酸カルシウムの合計含量が60重量％以上となる
ように抄紙する。ここで山皮とは含水珪酸マグネ
シウム系鉱物であつて、たとえばセピオライト、
パリゴルスカイト、アタパルジヤイトを代表例と
して挙げることが出来る。通常マウンテンレザ
ー、マウンテンコルク、メルシヤム（海泡石）等
と呼ばれているものであり、山皮は原石でもある
いは市販品いずれでも良い。また山皮には、一部
炭酸カルシウム等が混入している場合があるが、
この様な場合には、これを粉砕若しくは分離して
使用するのが好ましい。
また本発明の紙の原料となる珪酸カルシウムか
ら成る二次粒子またはこれが水に分散したスラリ
ー自体は本出願前すでによく知られたものであ
り、たとえば特公昭52−43494号、特公昭53−
12526号、特公昭53−18533号、特公昭54−4968
号、特公昭55−29952号公報に記載されたものを
例示することが出来る。上記公報記載の各方法は
いずれも原料スラリーを撹拌下に合成反応せしめ
て珪酸カルシウムを生成せしめるものであつて、
所謂撹拌法と呼ばれることがある。而して本発明
に於いてはまた撹拌法以外の方法で調製された二
次粒子から成るスラリーも使用出来、たとえば原
料スラリーをオートクレーブ中で撹拌することな
く水熱反応せしめ、必要に応じ若干粉砕したもの
を例示出来る。これ等珪酸カルシウム二次粒子は
原則的には珪酸カルシウムが多数二次元的に絡合
してほぼ球状の二次粒子を形成したものであつ
て、その表面には珪酸カルシウムに基ずく多数の
微細な結晶が突出している。
また二次粒子が主体となるかぎり珪酸カルシウ
ムの一次粒子が混在していても良い。この際の珪
酸カルシウムとしてはワラストナイト族、トベル
モライト族、トリカルシウムシリケート水和物及
びα−ダイカルシウムシリケート水和物の群から
選ばれた少くとも１種が使用される。
繊維質物質としては有機質繊維並びに無機質繊
維の１種または２種以上が使用され、前者として
は、セルロース繊維の他にポリアミド、ポリエス
テル、ポリオレフインの如き各種合成繊維が、ま
た後者としてはグラスフアイバー、岩綿、石綿、
シリカフアイバー、セラミツクフアイバー、炭素
繊維、無機ウイスカー等を例示出来る。繊維質物
質を山皮と珪酸カルシウム結晶のスラリーに添加
するに際しては、該繊維を水に懸濁し、就中有機
繊維の場合は好ましくはこれを叩解してフイブリ
ル化して後、添加する。抄紙操作、条件等は従来
から使用されて来た操作や条件がそのまま適用出
来、またサイズ剤その他添加剤が必要に応じ適宜
に添加される。この際の添加剤としてはたとえば
紙力増強剤、撥水剤、耐湿性樹脂、合成ゴムラテ
ツクス、難燃剤等を例示出来、これ等添加剤は目
的とする紙の用途に応じて混合、含浸または塗工
により容易に添加される。
また本発明の不燃乃至難燃紙を調製する際に、
抄紙後、カレンダー処理を行うと平滑で緻密な紙
となり、更にスーパーカレンダー掛けを行うこと
により表面に光沢を賦与出来美しい紙とすること
が出来る。
本発明の紙は不燃乃至難燃性並びに防災性に優
れるだけでなく、吸着性、断熱性、電気絶縁性、
加工性に優れているので、従来から使用されてい
る難燃防災壁紙、天井材、ハニカムコア材、クツ
シヨンフロア材、工業用断熱材、パツキング材、
電気絶縁材、空調熱交換器用エレメント、ガス吸
着シート等の用途にも有効に使用出来る。また柔
軟性に富んでいるため、容易にコルゲート加工が
出来、コルゲート保温材として使用出来るもので
ある。
以下に実施例並びに比較例を示して本発明を具
体的に説明する。
実施例 １
シリカフラワー46.08重量部、生石灰41.42重量
部及び水2100重量部を混合し、これを温度及び内
圧が200℃、15Kg／cm2の飽和水蒸気圧下で撹拌し
ながら２時間水熱合成反応を行つて結晶スラリー
を得た。
この結晶スラリーは、Ｘ線回折分析を行つた結
果、ゾノトライト結晶を主体とするスラリーであ
ることが判明した。
また、上記スラリーをそのまま走査型電子顕微
鏡下及び光学顕微鏡下で観すると、直径が約10〜
70μｍのほぼ球状の二次粒子がみられた。
次いで上記結晶スラリーに、叩解（叩解度
SR26゜）したセルローズ繊維（以下パルプと言
う）及び100重量倍の水でミキサーにて２分間分
散させて得たセピオライト（中国産、炭酸カルシ
ウムが一部混在する）スラリーを加えたものを水
に均一に分散し、これをタツピ−スタンダードマ
シン（目数100メツシユ）で抄造し紙を形成した
後、プレスし、乾燥した。
得られた紙の特性は第１表の通りであつた。
なお難燃性試験方法はJIS Ａ 1322のメツケル
バーナー法に準拠し、加熱時間を３分間として炭
化長、残炎、残塵を測定し、合否を判定した。ま
た柔軟性は、15mm幅に切つた試験紙を２つに折り
曲げて割れを生じるか否かで判定し、その表面に
割れを生じない場合を〇、割れを生じる場合を×
とした。
The present invention relates to non-flammable or flame-retardant paper, and more particularly to paper whose main components are mountain bark and calcium silicate. Paper is currently used in a wide range of fields, and there is a strong demand for the development of paper that is nonflammable or flame retardant, and has excellent flexibility and tensile strength. Conventionally, non-combustible or flame-retardant papers include mountain parchment paper, asbestos paper, and ceramic fiber paper, but such non-combustible and flame-retardant papers have advantages and disadvantages, and currently there is no paper that has all of the above-mentioned properties. For example, yamabi paper has excellent flame retardancy and flexibility, but low tensile strength, while asbestos paper has excellent flame retardancy and tensile strength, but has problems with flexibility, and when folded, the surface Cracks occur, and it is also expensive and undesirable from an environmental hygiene standpoint. Furthermore, although ceramic fiber paper has excellent flame retardancy, it has problems such as low tensile strength and high cost. In addition, the above-mentioned asbestos and ceramic fibers cannot be made into paper by themselves, so paper is formed using an inorganic or organic binder, but in Yamahaki, no binder is added. It has the excellent property of being able to form paper. Therefore, there has been a strong demand for a paper that eliminates the drawbacks of conventional non-flammable and flame-retardant papers, is non-flammable and flame-retardant, is highly flexible, and has excellent tensile strength. Ta. The present inventors have continued their research to develop a non-flammable or flame-retardant paper that can fully meet the above requirements. A new type of non-combustible or flame-retardant paper that does not impair the excellent properties of mountain bark, which allows it to be formed into paper without any additives, and also has excellent flame retardancy, flexibility and tensile strength. The development was successful and the invention was finally completed. That is, the present invention provides (a) a state in which mountain skin and secondary particles of calcium silicate, or these and further fibrous substances (excluding mountain skin) are compressed and deformed while being entangled with each other; and the total content of mountain bark and calcium silicate is 60% by weight or more, and the ratio is 10 to 100 parts by weight of calcium silicate to 100 parts by weight of mountain bark, This paper relates to a non-combustible or flame-retardant paper which is characterized in that no cracks occur on its surface when it is folded. The non-combustible or flame-retardant paper of the present invention is characterized by the following points. That is, the mountain bark and the secondary particles of calcium silicate are intertwined with the fibrous material and connected in a compressed and deformed state. In this compressed and deformed state, the shape of the secondary particles remains quite clearly, and the secondary particles are significantly compressed and deformed and become almost flattened, so that the original shape of the secondary particles is almost completely lost. It also includes states that have been deformed to the extent that no trace remains. Next, the second characteristic of the paper of the present invention is that the total content of mountain bark and calcium silicate is 60% by weight or more, and the ratio is such that calcium silicate is contained in 100 parts by weight of mountain bark.
It should be 10 to 100 parts by weight. The paper of the present invention is mainly composed of mountain bark and calcium silicate, and is not used as a paper filler.The paper of the present invention has a major feature in that the content is more than 60% by weight, and the fibrous material is only used as a filler. It is an auxiliary raw material, and there is no need to use the fibrous substance at all. According to the research carried out by the present inventors, when the total content of mountain bark and calcium silicate is 60% by weight or less, depending on the fiber used, especially when using organic fiber, the JIS A 1322 flame retardancy test will fail. If the ratio of calcium silicate to 100 parts by weight of mountain bark is less than 10 parts by weight, the tensile strength will decrease significantly, and if the ratio of calcium silicate is 100 parts by weight or more, paper will be rejected. When folded, cracks will appear on its surface, which will no longer meet the intended purpose of the present invention. The third feature of the paper of the present invention is that the state of connection between the mountain bark and the fibrous material, or the mountain bark and the secondary particles of calcium silicate, is defined by the following points. First, when the paper of the present invention is folded, no cracks occur on its surface. This feature indicates the flexibility or pliability of the paper of the present invention. The fourth feature of the paper of the present invention is that it is nonflammable or flame retardant. That is, the above
In the JIS A 1322 flame retardant test, it passes at least level 3 flame retardant. The fifth feature of the paper of the present invention is that the tearing length in the papermaking direction is 0.3 km or more. The fracture length is expressed by the following formula. Rupture length (Km) = Tensile strength (Kg)/15 (mm) x Basis weight (g/m 2 ) x 1000 The paper of the present invention also has the following properties.
First, its thickness is usually about 1 mm or less, and its basis weight is 400 g/m 2 or less. When preparing the non-combustible or flame-retardant paper of the present invention, a fibrous substance is added to an aqueous slurry in which mountain bark and calcium silicate secondary particles are dispersed in water, if necessary, and mixed. Paper is made so that the total content of mountain bark and calcium silicate in the paper is 60% by weight or more. Mountain bark here refers to hydrated magnesium silicate minerals, such as sepiolite,
Representative examples include palygorskite and attapalgite. It is usually called mountain leather, mountain cork, meersiam (meersiam), etc., and the mountain leather may be either raw stone or commercially available products. In addition, some mountain bark may contain calcium carbonate, etc.
In such a case, it is preferable to use it after pulverizing or separating it. Furthermore, the secondary particles made of calcium silicate or the slurry of calcium silicate dispersed in water, which is the raw material for the paper of the present invention, were already well known prior to the filing of this application;
No. 12526, Special Publication No. 18533, Special Publication No. 54-4968
Examples include those described in Japanese Patent Publication No. 55-29952. Each of the methods described in the above publications involves a synthesis reaction of a raw material slurry while stirring to produce calcium silicate.
This is sometimes called the so-called stirring method. Therefore, in the present invention, it is also possible to use a slurry made of secondary particles prepared by a method other than the stirring method. For example, a raw material slurry is subjected to a hydrothermal reaction in an autoclave without stirring, and if necessary, it is slightly pulverized. I can give an example of what I did. In principle, these calcium silicate secondary particles are composed of a large number of calcium silicate entangled two-dimensionally to form approximately spherical secondary particles, and the surface of the calcium silicate particles is composed of a large number of calcium silicate-based particles. Fine crystals are prominent. Further, primary particles of calcium silicate may be mixed as long as secondary particles are the main particles. At least one type of calcium silicate selected from the group of wollastonite group, tobermolite group, tricalcium silicate hydrate, and α-dicalcium silicate hydrate is used as the calcium silicate. As the fibrous material, one or more types of organic fibers and inorganic fibers are used, and the former includes various synthetic fibers such as polyamide, polyester, and polyolefin in addition to cellulose fiber, and the latter includes glass fiber and rock fiber. cotton, asbestos,
Examples include silica fibers, ceramic fibers, carbon fibers, and inorganic whiskers. When adding a fibrous substance to the slurry of mountain bark and calcium silicate crystals, the fibers are suspended in water, and in the case of organic fibers, they are preferably beaten and fibrillated before being added. As for the paper making operations, conditions, etc., conventionally used operations and conditions can be applied as they are, and sizing agents and other additives may be added as appropriate. Examples of additives in this case include paper strength enhancers, water repellents, moisture-resistant resins, synthetic rubber latex, flame retardants, etc. These additives may be mixed, impregnated, or coated depending on the intended use of the paper. It can be easily added by engineering. In addition, when preparing the non-flammable or flame-retardant paper of the present invention,
After papermaking, calendering produces a smooth, dense paper, and supercalendering imparts gloss to the surface, resulting in beautiful paper. The paper of the present invention not only has excellent non-flammability or flame retardancy and disaster prevention properties, but also has adsorption properties, heat insulation properties, electrical insulation properties,
Because of its excellent workability, it can be used in conventionally used fire-retardant disaster prevention wallpaper, ceiling materials, honeycomb core materials, cushion floor materials, industrial insulation materials, packing materials,
It can also be effectively used for electrical insulation materials, air conditioning heat exchanger elements, gas adsorption sheets, etc. Also, because it is highly flexible, it can be easily corrugated and used as a corrugated heat insulating material. EXAMPLES The present invention will be specifically explained below with reference to Examples and Comparative Examples. Example 1 46.08 parts by weight of silica flour, 41.42 parts by weight of quicklime and 2100 parts by weight of water were mixed, and a hydrothermal synthesis reaction was carried out for 2 hours while stirring at a temperature and internal pressure of 200°C and a saturated steam pressure of 15 kg/ cm2 . I went there and got a crystal slurry. As a result of X-ray diffraction analysis, this crystal slurry was found to be mainly composed of xonotrite crystals. In addition, when the above slurry is directly observed under a scanning electron microscope and an optical microscope, it is found that the diameter is about 10~
Almost spherical secondary particles of 70 μm were observed. Next, the crystal slurry is subjected to beating (beating degree).
SR26゜) cellulose fiber (hereinafter referred to as pulp) and a slurry of sepiolite (produced in China, containing some calcium carbonate) obtained by dispersing it in 100 times its weight of water in a mixer for 2 minutes, are added to water. After being uniformly dispersed, this was made into paper using a Tatsupi standard machine (100 meshes), which was then pressed and dried. The properties of the obtained paper were as shown in Table 1. The flame retardancy test method was based on the Metzkel burner method of JIS A 1322, and the heating time was 3 minutes, and the char length, afterflame, and residual dust were measured, and pass/fail was determined. In addition, flexibility is determined by folding a test paper cut into 15 mm width in two and determining whether or not cracks occur.If no cracks occur on the surface, it is ○, and if cracks occur, it is judged by ×.
And so.
【表】【table】
【表】
実施例 ２
実施例１と同様にして製造したゾノトライト結
晶スラリーに、叩解（叩解度SR33゜）したパル
プ、マニラ麻（叩解度SR48゜）及び100重量倍の
水でミキサーにて２分間分散させて得た実施例１
と同様のセピオライトのスラリーを加えたものを
水に均一に分散し、これをタツピ−スタンダード
マシンで抄造し紙を形成した後、プレス乾燥し
た。
得られた紙の特性は第２表の通りであつた。[Table] Example 2 A xonotlite crystal slurry produced in the same manner as in Example 1 was dispersed with beaten pulp (beating degree SR33°), Manila hemp (beating degree SR48°) and 100 times the weight of water in a mixer for 2 minutes. Example 1 obtained by
A slurry of sepiolite similar to the above was added and uniformly dispersed in water, which was made into paper using a Tatsupi standard machine and then press-dried. The properties of the obtained paper were as shown in Table 2.
【表】
実施例 ３
実施例１と同様にして製造したゾノトライト結
晶スラリーに、叩解（叩解度SR33゜）したパル
プ、PVCラテツクス（日本ゼオン株式会社製、
商品名ゼオン576）及び100重量倍の水でミキサー
にて２分間分散させて得たセピオライト（武田薬
品工業株式会社製、商品名エードプラスML−
100D）のスラリーを加えたものを水に均一に分
散し、これをタツピースタンダードマシンで抄造
し紙を形成した後、プレス乾燥した。
得られた紙の特性は第３表の通りであつた。[Table] Example 3 A xonotlite crystal slurry produced in the same manner as in Example 1 was added with beaten pulp (beating degree SR33°) and PVC latex (manufactured by Nippon Zeon Co., Ltd.).
(trade name Zeon 576) and sepiolite obtained by dispersing it in a mixer for 2 minutes with 100 times its weight of water (manufactured by Takeda Pharmaceutical Co., Ltd., trade name AEDPLUS ML-)
100D) was added to the slurry and uniformly dispersed in water, which was then made into paper using a Tatsupi standard machine and then press-dried. The properties of the obtained paper were as shown in Table 3.
【表】
比較例
市販の石綿紙及びセラミツクフアイバー紙の特
性は第４表の通りであつた。[Table] Comparative Example The characteristics of commercially available asbestos paper and ceramic fiber paper are as shown in Table 4.
Claims (1)
またはこれ等と更に繊維質物質（但し山皮を除
く）とが、からまり合い乍ら圧縮変形された状
態で連結し、且つ山皮と珪酸カルシウムの合計
含量が60重量％以上でその比率が山皮100重量
部に対して珪酸カルシウムが10〜100重量部で
あつて、 (ロ) 上記連結状態は、紙を折り曲げた場合にその
表面に割れを生じないことを特徴とする不燃乃
至難燃紙。 ２ 繊維質物質の含量が30重量％以下である特許
請求の範囲第１項の不燃乃至難燃紙。 ３ 珪酸カルシウムがワラストナイト族珪酸カル
シウムである特許請求の範囲第１項の不燃乃至難
燃紙。 ４ 更に他の添加剤が均一に含有されている特許
請求の範囲第１項の不燃乃至難燃紙。[Claims] 1. (a) Mountain bark and secondary particles of calcium silicate,
Or these and a fibrous substance (excluding mountain bark) are intertwined and connected in a compressed and deformed state, and the total content of mountain bark and calcium silicate is 60% by weight or more, and the ratio is Calcium silicate is 10 to 100 parts by weight per 100 parts by weight of mountain bark, and (b) the above-mentioned connected state is non-flammable or flame-retardant, characterized in that no cracks occur on the surface when the paper is folded. paper. 2. The non-flammable or flame-retardant paper according to claim 1, wherein the content of fibrous material is 30% by weight or less. 3. The non-flammable or flame-retardant paper according to claim 1, wherein the calcium silicate is a wollastonite group calcium silicate. 4. The non-flammable or flame-retardant paper according to claim 1, which further contains other additives uniformly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12826782A JPS5921799A (en) | 1982-07-21 | 1982-07-21 | Incombustible and fire retardant paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12826782A JPS5921799A (en) | 1982-07-21 | 1982-07-21 | Incombustible and fire retardant paper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5921799A JPS5921799A (en) | 1984-02-03 |
| JPS6111902B2 true JPS6111902B2 (en) | 1986-04-05 |
Family
ID=14980606
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12826782A Granted JPS5921799A (en) | 1982-07-21 | 1982-07-21 | Incombustible and fire retardant paper |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5921799A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0816320B2 (en) * | 1984-04-26 | 1996-02-21 | 株式会社興人 | Heat-resistant sheet and manufacturing method thereof |
| JPS6249142A (en) * | 1985-08-28 | 1987-03-03 | Toyota Central Res & Dev Lab Inc | Ventilation fan |
| US4797010A (en) * | 1987-09-22 | 1989-01-10 | Nabisco Brands, Inc. | Reheatable, resealable package for fried food |
| JP2505962Y2 (en) * | 1988-08-10 | 1996-08-07 | ニベックス株式会社 | Planar moving device |
| EP0541888B1 (en) * | 1991-10-31 | 1997-09-10 | Kabushiki Kaisha Tokiwa Denki | Noncombustible sheet, noncombustible laminated sheet, noncombustible honey-comb structural material, noncombustible board, noncombustible molded product, and manufacturing method thereof |
| ES2155320B1 (en) * | 1998-02-16 | 2001-12-01 | Guerrero Felix Canada | A NEW COMPONENT OF THE PASTA FOR THE MANUFACTURE OF PAPER OR CARTON. |
| CN100350015C (en) * | 2005-01-18 | 2007-11-21 | 西北师范大学 | Palygorskite compound flame retardant |
| JP4866758B2 (en) * | 2007-02-28 | 2012-02-01 | 北越紀州製紙株式会社 | Non-combustible sheet or non-combustible molded product |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS504310A (en) * | 1973-05-21 | 1975-01-17 | ||
| JPS5143485A (en) * | 1974-10-07 | 1976-04-14 | Santo Tekkosho Kk | Koatsu suchiimaano shiiruhohono kairyo |
| JPS5243494A (en) * | 1975-10-03 | 1977-04-05 | Riken Keiki Kk | Multiple point gas detecting and alarming system |
| JPS5328705A (en) * | 1976-08-27 | 1978-03-17 | Takeda Chemical Industries Ltd | Heattresisting paper |
| JPS5663099A (en) * | 1979-10-22 | 1981-05-29 | Nittetsu Mining Co Ltd | Production of ceramic sheet |
-
1982
- 1982-07-21 JP JP12826782A patent/JPS5921799A/en active Granted
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS504310A (en) * | 1973-05-21 | 1975-01-17 | ||
| JPS5143485A (en) * | 1974-10-07 | 1976-04-14 | Santo Tekkosho Kk | Koatsu suchiimaano shiiruhohono kairyo |
| JPS5243494A (en) * | 1975-10-03 | 1977-04-05 | Riken Keiki Kk | Multiple point gas detecting and alarming system |
| JPS5328705A (en) * | 1976-08-27 | 1978-03-17 | Takeda Chemical Industries Ltd | Heattresisting paper |
| JPS5663099A (en) * | 1979-10-22 | 1981-05-29 | Nittetsu Mining Co Ltd | Production of ceramic sheet |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5921799A (en) | 1984-02-03 |
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