JPH0231025B2 - SUIKOSEIMUKISOSEIBUTSU - Google Patents
SUIKOSEIMUKISOSEIBUTSUInfo
- Publication number
- JPH0231025B2 JPH0231025B2 JP2340586A JP2340586A JPH0231025B2 JP H0231025 B2 JPH0231025 B2 JP H0231025B2 JP 2340586 A JP2340586 A JP 2340586A JP 2340586 A JP2340586 A JP 2340586A JP H0231025 B2 JPH0231025 B2 JP H0231025B2
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic inorganic
- composition
- weight
- chlorinated polyethylene
- impact resistance
- 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 - Lifetime
Links
- 239000000203 mixture Substances 0.000 claims description 18
- 239000004709 Chlorinated polyethylene Substances 0.000 claims description 11
- 239000000126 substance Substances 0.000 claims description 7
- 230000000694 effects Effects 0.000 description 7
- 229910010272 inorganic material Inorganic materials 0.000 description 6
- 239000011147 inorganic material Substances 0.000 description 6
- 239000004568 cement Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 3
- 229910052801 chlorine Inorganic materials 0.000 description 3
- 239000000460 chlorine Substances 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000003607 modifier Substances 0.000 description 2
- 229920000620 organic polymer Polymers 0.000 description 2
- 229920003051 synthetic elastomer Polymers 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 239000005061 synthetic rubber Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000004067 bulking agent Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 150000001993 dienes Chemical class 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 239000011396 hydraulic cement Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 238000011417 postcuring Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229920006174 synthetic rubber latex Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 229920006337 unsaturated polyester resin Polymers 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/24—Macromolecular compounds
- C04B24/26—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
【発明の詳細な説明】
（発明の技術分野）
本発明は耐衝撃性等の機械的特性が改善された
水硬性無機組成物に関する。
（従来技術）
セメントの如き水硬性無機物質は優れた建設材
料であるが、硬化して得られた、例えばコンクリ
ートは収縮のために亀裂が発生し、これが為耐衝
撃性が引張強度の低下が著しく、更には耐薬品性
にも問題があることが指摘されている。
従来このような欠点を改善する方法として有機
高分子材料を用いることが検討された。例えばコ
ンクリートにモノマーやプレポリマーを含浸させ
後硬化させてコンクリートとポリマーを一体化さ
せたものやエポキシ樹脂、不飽和ポリエステル樹
脂等の熱硬化性樹脂を予めセメントに混合して後
硬化させる方法が提案されている。しかし、これ
らの方法は後硬化の際に発熱現象により体積の収
縮が起こり、これによる亀裂の発生を抑制するこ
とは不可避であつてこれらの方法による水硬性組
成物の機械的性質の向上効果は十分とはいえない
ものであつた。また合成樹脂や合成ゴムなどの水
分散液、特に合成ゴムラテツクスは、上記機械的
特性、耐水性、耐薬品性を向上させる改質剤とし
て知られ、広く実用に供せられているが、該改質
剤添加による水硬性無機物質の保水性が十分でな
いため組成物の他基材への接着性が劣り、また水
硬性無機物質の水和反応を阻害させるという欠点
もあつた。
（発明の目的）
本発明は、上記の如き欠点のない有機質ポリマ
ー混合による耐衝撃性等の機械的特性の改善され
た水硬性無機組成物を提供することを目的とす
る。
（発明の構成）
本発明は改質剤として粉末状塩素化ポリエチレ
ンを使用することを特徴とするものであり、即
ち、水硬性無機物質100重量部に対して粉末状塩
素化ポリエチレン５〜20重量部を混合したことを
特徴とする耐衝撃性等の機械的特性が改善された
水硬性無機組成物である。
本発明における水硬性無機物質とは、ポルトラ
ンドセメント組成物、特殊セメント、混合セメン
ト等の水硬性セメントや石膏等のセメント以外の
水硬性材料をいう。
本発明に用いられる塩素化ポリエチレンは、任
意の塩素含量、結晶度、分子量分布を有する塩素
化ポリエチレンあるいはエチレンを主成分とする
他のα−オレフイン、ジエンとの共重合体の塩素
化物、またはこれらと他のポリマー、例えば塩素
化ポリプロピレン、ポリ塩化ビニル、エチレン−
酢酸ビニル共重合体などとのブレンド物などをい
う。特に塩素含量20−50重量％の非晶性もしくは
実質的に非晶性の塩素化ポリエチレンあるいは同
塩素含量の上記共重合体の塩素化物が好ましい。
本発明における塩素化ポリエチレンは水硬性無機
物質への均一な混合分散を期するために粉末状の
ものが用いられる。粒径は出来丈小さいものが好
ましいが、通常平均粒径が100μｍ〜500μｍのも
のが使用に適する。平均粒径が500μｍをこえる
ものは組成物中へ混合分散が均一に行われ難く、
改質効果も十分に得られない。
本発明組成物における粉末状塩素化ポリエチレ
ンの配合量は、水硬性無機物質100重量部に対し
て５〜20重量部の範囲である。配合量が５重量部
より少ないと耐衝撃性等の改質効果が十分でな
く、また20重量部をこえてもそれに比例した硬化
物の耐衝撃性等の機械的特性に顕著な効果は見ら
れず不経済である。
本発明組成物には、従来該組成物に配合されて
いた砂、砂利等の骨材やシランカツプリング剤等
の添加剤の混入は自由である。特に炭素繊維、ガ
ラス繊維、有機繊維の混入は補強効果を一層大き
くするので好ましい。
本発明組成物の混合は、組成物に適量の水を加
えて従来常用されているミキシングロールやバン
バリミキサー等の混合機によつて行われる。上記
混合された組成物は、金型によつて60〜100℃、
20〜80Kg／cm2で５〜60分間熱圧成型後常温で養生
する方法や押出機によつて常温、10〜30Kg／cm2で
加圧成型後60〜100℃で養生するなど加熱処理に
よる成形が行われる。混合された粉末状塩素化ポ
リエチレンは加熱によつて変形溶融し、水硬性無
機物質の結合材として機械的特性の改善効果を発
揮するものである。
（発明の効果）
本発明組成物から得られる成型品は、従来のポ
リマー類を含まない成型品に較べて機械的強度が
数倍向上しており、落球試験による耐衝撃性も一
段と優れている。塩素化ポリエチレンは水硬性無
機物質と良く混ざり合い、混合中は可塑剤として
作用し、硬化後は成型品の外観を一層滑らかな状
態に仕上げる効果を有している。また塩素化ポリ
エチレンは耐アルカリ性、耐候性、耐薬品性、耐
油性に優れるため成型品のこのような環境下への
使用に好適である。更に本発明の成型品は、700
〜800℃の火源から遠ざけたとき残炎は全く生ぜ
ず、従来の合成樹脂又は合成ゴム混入の成型品に
較べて耐火性が一段と優れている。
（実施例）
実施例１〜３ 比較例１
表１に示す各組成物をバンバリミキサーにて常
温で３分間混練し、これを金型に充填して75℃、
50Kg／cm2で10分間プレスし、更に常温で24時間養
生を行つた。
上記成型品についてJISA1182による圧縮強度、
JISA1184による曲げ強度、JISA1185による引張
強度及び落球試験による耐衝撃性を測定し、その
結果を表１に示した。
【表】DETAILED DESCRIPTION OF THE INVENTION (Technical Field of the Invention) The present invention relates to a hydraulic inorganic composition with improved mechanical properties such as impact resistance. (Prior Art) Hydraulic inorganic materials such as cement are excellent construction materials, but the resulting hardened material, e.g. concrete, cracks due to shrinkage, resulting in a decrease in impact resistance and tensile strength. It has been pointed out that there are significant problems with chemical resistance. Conventionally, the use of organic polymer materials has been considered as a method to improve such drawbacks. For example, methods have been proposed in which concrete is impregnated with monomers or prepolymers and then post-cured to integrate the concrete and polymer, or thermosetting resins such as epoxy resins and unsaturated polyester resins are pre-mixed with cement and post-cured. has been done. However, with these methods, the volume shrinks due to exothermic phenomenon during post-curing, and it is inevitable to suppress the occurrence of cracks due to this, and the effect of improving the mechanical properties of hydraulic compositions by these methods is limited. It was not enough. In addition, aqueous dispersions of synthetic resins and synthetic rubbers, especially synthetic rubber latexes, are known as modifiers that improve the above-mentioned mechanical properties, water resistance, and chemical resistance, and are widely used in practical use. Since the water-holding ability of the hydraulic inorganic material due to the addition of a bulking agent is not sufficient, the adhesion of the composition to other substrates is poor, and the hydration reaction of the hydraulic inorganic material is also inhibited. (Objective of the Invention) An object of the present invention is to provide a hydraulic inorganic composition having improved mechanical properties such as impact resistance by mixing an organic polymer without the above-mentioned drawbacks. (Structure of the Invention) The present invention is characterized by using powdered chlorinated polyethylene as a modifier, that is, 5 to 20 parts by weight of powdered chlorinated polyethylene per 100 parts by weight of the hydraulic inorganic material. This is a hydraulic inorganic composition with improved mechanical properties such as impact resistance. The hydraulic inorganic substance in the present invention refers to hydraulic cements such as Portland cement compositions, special cements, and mixed cements, and hydraulic materials other than cements such as gypsum. The chlorinated polyethylene used in the present invention is a chlorinated polyethylene having any chlorine content, crystallinity, and molecular weight distribution, or a chlorinated copolymer of ethylene with other α-olefins or dienes, or a chlorinated product of these. and other polymers such as chlorinated polypropylene, polyvinyl chloride, ethylene-
Refers to blends with vinyl acetate copolymers, etc. Particularly preferred are amorphous or substantially amorphous chlorinated polyethylene having a chlorine content of 20 to 50% by weight, or chlorinated products of the above copolymers having the same chlorine content.
The chlorinated polyethylene used in the present invention is used in powder form in order to ensure uniform mixing and dispersion in the hydraulic inorganic material. It is preferable that the particle size is small, but those with an average particle size of 100 μm to 500 μm are usually suitable for use. If the average particle size exceeds 500 μm, it is difficult to mix and disperse the particles uniformly into the composition.
A sufficient modification effect cannot be obtained either. The amount of powdered chlorinated polyethylene in the composition of the present invention is in the range of 5 to 20 parts by weight per 100 parts by weight of the hydraulic inorganic material. If the amount is less than 5 parts by weight, the effect of modifying impact resistance etc. will not be sufficient, and even if it exceeds 20 parts by weight, there will be no noticeable effect on mechanical properties such as impact resistance of the cured product. It is uneconomical. In the composition of the present invention, additives such as aggregates such as sand and gravel, and additives such as silane coupling agents, which have been conventionally blended in the compositions, may be mixed freely. In particular, it is preferable to incorporate carbon fiber, glass fiber, or organic fiber, since this further increases the reinforcing effect. Mixing of the composition of the present invention is carried out by adding an appropriate amount of water to the composition and using a conventionally commonly used mixer such as a mixing roll or a Banbury mixer. The above mixed composition is heated to 60 to 100℃ depending on the mold.
By heat treatment, such as hot-pressing molding at 20-80Kg/ cm2 for 5-60 minutes and then curing at room temperature, or using an extruder at room temperature, pressure molding at 10-30Kg/ cm2 , then curing at 60-100℃. Molding is performed. The mixed powdered chlorinated polyethylene is deformed and melted by heating, and exhibits the effect of improving mechanical properties as a binder for hydraulic inorganic substances. (Effects of the Invention) Molded products obtained from the composition of the present invention have several times more mechanical strength than conventional molded products that do not contain polymers, and have even better impact resistance in a falling ball test. . Chlorinated polyethylene mixes well with hydraulic inorganic substances, acts as a plasticizer during mixing, and has the effect of giving molded products a smoother appearance after curing. In addition, chlorinated polyethylene has excellent alkali resistance, weather resistance, chemical resistance, and oil resistance, and is therefore suitable for use in molded products in such environments. Furthermore, the molded product of the present invention has 700
When kept away from a fire source of ~800°C, no afterflame occurs at all, and the fire resistance is far superior to conventional molded products containing synthetic resin or synthetic rubber. (Examples) Examples 1 to 3 Comparative Example 1 Each composition shown in Table 1 was kneaded for 3 minutes at room temperature using a Banbury mixer, and the mixture was filled into a mold and mixed at 75°C.
It was pressed at 50 kg/cm 2 for 10 minutes and then cured at room temperature for 24 hours. Compressive strength according to JISA1182 for the above molded products,
Bending strength according to JISA1184, tensile strength according to JISA1185, and impact resistance according to a falling ball test were measured, and the results are shown in Table 1. 【table】
Claims (1)
素化ポリエチレン５〜20重量部を混合したことを
特徴とする耐衝撃性等の機械的特性が改善された
水硬性無機組成物。1. A hydraulic inorganic composition with improved mechanical properties such as impact resistance, characterized in that 5 to 20 parts by weight of powdered chlorinated polyethylene is mixed with 100 parts by weight of a hydraulic inorganic substance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2340586A JPH0231025B2 (en) | 1986-02-05 | 1986-02-05 | SUIKOSEIMUKISOSEIBUTSU |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2340586A JPH0231025B2 (en) | 1986-02-05 | 1986-02-05 | SUIKOSEIMUKISOSEIBUTSU |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62182140A JPS62182140A (en) | 1987-08-10 |
| JPH0231025B2 true JPH0231025B2 (en) | 1990-07-11 |
Family
ID=12109588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2340586A Expired - Lifetime JPH0231025B2 (en) | 1986-02-05 | 1986-02-05 | SUIKOSEIMUKISOSEIBUTSU |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0231025B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63134544A (en) * | 1986-11-22 | 1988-06-07 | 株式会社 栗本鉄工所 | Cement set body |
| JPS6451354A (en) * | 1987-08-17 | 1989-02-27 | Hisashi Ishihara | Fine cement |
-
1986
- 1986-02-05 JP JP2340586A patent/JPH0231025B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62182140A (en) | 1987-08-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |