WO2011096412A1 - 難燃剤、難燃性樹脂組成物及び絶縁電線 - Google Patents
難燃剤、難燃性樹脂組成物及び絶縁電線 Download PDFInfo
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- WO2011096412A1 WO2011096412A1 PCT/JP2011/052095 JP2011052095W WO2011096412A1 WO 2011096412 A1 WO2011096412 A1 WO 2011096412A1 JP 2011052095 W JP2011052095 W JP 2011052095W WO 2011096412 A1 WO2011096412 A1 WO 2011096412A1
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- WIPO (PCT)
- Prior art keywords
- flame retardant
- surface treatment
- treatment agent
- resin composition
- magnesium hydroxide
- Prior art date
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K21/00—Fireproofing materials
- C09K21/02—Inorganic materials
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
- C08K9/04—Ingredients treated with organic substances
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
- H01B7/29—Protection against damage caused by extremes of temperature or by flame
- H01B7/295—Protection against damage caused by extremes of temperature or by flame using material resistant to flame
Definitions
- the present invention relates to a flame retardant, a flame retardant resin composition, and an insulated wire, and more particularly, to a flame retardant, a flame retardant resin composition, and an insulated wire that are suitably used for automobiles, electrical / electronic devices, and the like.
- Patent Document 1 a non-halogen flame retardant material that does not generate corrosive gas has been proposed. Further, as can be seen in Patent Documents 2 to 4, magnesium hydroxide subjected to surface treatment has been proposed as a non-halogen flame retardant resin composition.
- JP 2004-83612 A Japanese Patent No. 3339154 Japanese Patent No. 3636675 JP 2004-189905 A
- polyolefin resins filled with magnesium hydroxide are generally used.
- this material has a problem of insufficient cold resistance.
- this material has a problem that the kneadability is poor and sufficient productivity is not provided.
- the problem to be solved by the present invention is to solve the above-mentioned problems, and to provide a flame retardant, a flame retardant resin composition and an insulated wire which are excellent in cold resistance and have high productivity. It is in.
- the flame retardant of the present invention is a flame retardant having a magnesium hydroxide surface treated with a surface treatment agent comprising an organic polymer, and the crystallinity of the surface treatment agent is 60%. This is the gist of the above.
- the surface treatment agent is a hydrocarbon-based resin, and the surface treatment agent is at least one of polyethylene, polypropylene, ethylene-ethyl acrylate copolymer, ethylene-vinyl acetate copolymer, and derivatives thereof. Containing at least one kind, the content of the surface treatment agent in the flame retardant is 0.1 to 10% by mass, and the average particle size of the magnesium hydroxide (before the surface treatment) is 0.1 It is preferable that the thickness is ⁇ 20 ⁇ m.
- the summary of the flame retardant resin composition of the present invention is that the above flame retardant is added to at least the base resin.
- the gist of the insulated wire of the present invention is that the periphery of the conductor is insulated and coated with the coating material made of the flame retardant resin composition.
- the flame retardant of the present invention is obtained by treating the surface of magnesium hydroxide with a surface treating agent having a crystallinity of 60% or more, thereby obtaining a material having good dispersibility and excellent cold resistance.
- a surface treating agent having a crystallinity of 60% or more when the flame retardant of the present invention is a resin composition, the discharge amount when discharging the composition from a kneader or the like is sufficient, and the productivity is excellent.
- the flame retardant resin composition of the present invention is obtained by adding the above flame retardant to a base resin, a molded product having excellent productivity and excellent cold resistance can be obtained.
- the insulated wire of the present invention is excellent in productivity and cold resistance because the periphery of the conductor is insulated and coated with the coating material made of the flame retardant resin composition.
- the surface of magnesium hydroxide is surface-treated with a surface treatment agent.
- a surface treatment agent either synthetic magnesium hydroxide synthesized chemically or natural magnesium hydroxide obtained by pulverizing a naturally occurring mineral may be used.
- Examples of the synthetic magnesium hydroxide include those obtained by crystal growth of magnesium hydroxide fine particles obtained by aqueous solution reaction with calcium hydroxide using magnesium chloride in seawater as a raw material, and by the ion bitter method Etc.
- natural magnesium hydroxide for example, natural brucite may be dry pulverized with a pulverizer, crusher, ball mill or the like, or pulverized with wet pulverization, etc. What is classified as follows.
- the pulverization method is preferably a dry method.
- Magnesium hydroxide (before surface treatment) usually has an average particle size of 0.1 to 20 ⁇ m, preferably 0.2 to 10 ⁇ m, more preferably 0.5 to 5 ⁇ m. If the average particle size of magnesium hydroxide is less than 0.1 ⁇ m, secondary aggregation is likely to occur, and the mechanical properties of the composition may be reduced. Moreover, when the average particle diameter of magnesium hydroxide exceeds 20 micrometers, when the flame-retardant resin composition which added magnesium hydroxide is used as an electric wire coating material, there exists a possibility that the external appearance of the obtained electric wire may become bad.
- the surface treatment agent a resin having a crystallinity of 60% or more is used.
- the crystallinity of the surface treatment agent is a value obtained by an X-ray diffraction method. Since magnesium hydroxide has high crystallinity, when the crystallinity of the surface treatment agent is low, the interaction between magnesium hydroxide and the surface treatment agent is weakened. Therefore, since the surface treatment agent is easily peeled off from the magnesium hydroxide surface, the dispersibility with respect to the resin is deteriorated, and it becomes difficult to make the flame retardant fine particles. If the flame retardant is not finely divided, the dispersibility of the particles is lowered and the particles are aggregated.
- the discharge pressure increases and the composition production and molding work Will be reduced.
- the low temperature characteristic of the film formed from the resin composition which added the surface-treated flame retardant deteriorates.
- the crystallinity of the surface treatment agent is 60% or more, the surface treatment agent can easily be uniformly covered when the surface of the highly crystalline magnesium hydroxide particles is coated with the surface treatment agent.
- grains after surface treatment are grind
- the surface treatment agent When the surface treatment agent is neatly coated on the surface of the flame retardant and the particles are fine particles, the dispersibility of the flame retardant in the composition can be improved. As a result, it is possible to obtain the effect of improving productivity without deteriorating workability during the production and molding of the flame-retardant resin composition.
- the upper limit of the crystallinity of the surface treatment agent is not particularly limited, but it is preferably 95% or less because if the crystallinity is too high, the productivity of the surface treatment agent may be deteriorated.
- the crystallinity of the surface treatment agent is more preferably in the range of 60 to 90%.
- the surface treatment agent preferably has a weight average molecular weight of 10,000 or less.
- the weight average molecular weight of the surface treatment agent is 10,000 or less, the dispersibility is further improved and the cold resistance is further improved.
- the said weight average molecular weight is a polystyrene conversion weight average molecular weight measured by GPC method.
- a more preferable range of the weight average molecular weight of the surface treatment agent is 500 to 9500.
- the melting point of the surface treatment agent is preferably from 50 ° C. to 200 ° C., more preferably from 60 ° C. to 190 ° C., from the viewpoint of coatability during coating.
- a flame retardant that has been surface-treated with a surface treatment agent having a relatively high melting point using synthetic magnesium hydroxide as magnesium hydroxide prevents foaming when pelletizing a resin composition in which the flame retardant is added to the resin.
- the surface appearance of a molded article such as a wire covering material is good.
- the amount of the surface treatment agent added to the flame retardant is usually 0.001 to 20% by mass, preferably 0.1 to 10% by mass, and more preferably 0.2 to 8% by mass.
- the addition amount of the surface treatment agent is small, the effect of improving the cold resistance and productivity of the flame retardant resin composition to which the flame retardant is added tends to be lowered.
- there is too much addition amount of a surface treating agent although there is little influence on the effect which improves the cold resistance and productivity of a flame-retardant resin composition, there exists a possibility that cost may increase.
- the organic polymer used as the surface treatment agent is preferably a hydrocarbon resin such as a paraffin resin or an olefin resin.
- the hydrocarbon resin include homopolymers of ⁇ -olefins such as 1-heptene, 1-octene, 1-nonene, and 1-decene, or interpolymers, or mixtures thereof, polypropylene (PP ), Polyethylene (PE), ethylene-ethyl acrylate copolymer (EEA), ethylene-vinyl acetate copolymer (EVA), and derivatives thereof.
- the surface treating agent should just contain 1 or more types of the said resin at least.
- polyethylene examples include low density polyethylene, ultra low density polyethylene, linear low density polyethylene, high density polyethylene, and metallocene polymerized polyethylene.
- polypropylene examples include an atactic structure, a syndiotactic structure, a metallocene polymerized polypropylene, a homopolymer, and a copolymerized polypropylene.
- the surface treatment agent may be modified with a modifying agent.
- modification of the surface treatment agent include acid modification by introducing a carboxyl group (acid) using an unsaturated carboxylic acid or a derivative thereof as a modifying agent.
- the surface treatment agent is acid-modified, the surface of the magnesium hydroxide and the surface treatment agent become easy to conform.
- Specific examples of the modifier include maleic acid and fumaric acid as the unsaturated carboxylic acid, and examples of derivatives thereof include maleic anhydride (MAH), maleic acid monoester, maleic acid diester and the like. Of these, maleic acid and maleic anhydride are preferred. These modifiers may be used alone or in combination of two or more.
- Examples of the modification method for introducing an acid into the surface treatment agent include graft polymerization and a direct method.
- the modifying amount is usually about 0.1 to 20% by weight, preferably 0.2 to 10% by weight, more preferably 0.2 to 5% by weight based on the polymer. % By mass.
- the amount of modification is small, the effect of increasing the affinity between magnesium hydroxide and the surface treatment agent tends to be small, and when the amount of modification is large, the surface treatment agent may self-polymerize, and the effect of increasing the affinity with magnesium hydroxide Tends to be small.
- the surface treatment method for treating the surface of magnesium hydroxide with a surface treatment agent is not particularly limited, and various treatment methods can be used.
- the surface treatment method of magnesium hydroxide is, for example, a method in which a surface treatment agent is mixed afterwards with magnesium hydroxide synthesized in advance to a predetermined particle size, or a surface treatment agent is added simultaneously with the synthesis of magnesium hydroxide.
- any method of surface treatment may be used.
- the surface treatment method may be a wet method using a solvent or a dry treatment method not using a solvent.
- Solvents used for wet processing of the flame retardant include aliphatic hydrocarbons such as pentane, hexane, and heptane, and aromatic hydrocarbons such as benzene, toluene, and xylene.
- the surface treatment of magnesium hydroxide is carried out by adding a surface treatment agent to untreated magnesium hydroxide and base resin at the time of preparing the flame retardant resin composition, and simultaneously kneading the composition. A method of performing processing may be used.
- a flame retardant composed of magnesium hydroxide surface-treated with the above-described specific surface treatment agent is added to at least the base resin.
- a so-called non-halogen plastic or rubber not containing a halogen element such as chlorine or bromine is used as the base resin used in the flame retardant resin composition.
- Preferred materials for such a base resin include polyolefins and styrene copolymers. Specific examples include polyethylene, polypropylene, ethylene-propylene rubber, styrene-ethylene-butylene-styrene block copolymer, and the like.
- the amount of the flame retardant added in the flame retardant resin composition is preferably 30 to 250 parts by mass, and more preferably 50 to 200 parts by mass with respect to 100 parts by mass of the base resin. If the amount of the flame retardant added is less than 30 parts by mass, the flame retardancy tends to be insufficient, and if it exceeds 250 parts by mass, sufficient mechanical properties may not be obtained.
- the flame retardant resin composition only needs to be composed of at least a base resin and a flame retardant, but within a range that does not impair the properties of the composition, an antioxidant or other various additives as necessary. Can be added. For example, general pigments, fillers, antioxidants, anti-aging agents and the like used for the wire coating material may be blended.
- the flame retardant resin composition can be produced by kneading each component using a known mixing means.
- a kneading method for example, a Banbury mixer, a pressure kneader, a kneading extruder, a biaxial kneading extruder, a method of melt kneading with a normal kneader such as a roll, or the like can be used.
- the base resin may be added to the agitating kneader and the flame retardant may be added to the stirring, or the flame retardant may be added to the agitating machine and the base resin is added to the stirring. May be.
- kneading after dry blending with a tumbler or the like, it may be transferred to a kneader and kneaded. After kneading, the composition is taken out from the kneader. At that time, the composition may be formed into pellets with a pelletizer or the like.
- the flame-retardant resin composition can be used as a member or an insulating material used in automobiles, electronic / electric equipment, and is particularly suitably used as a material for forming an insulating layer of an insulated wire.
- the insulated wire of the present invention is such that the periphery of a conductor is insulated and coated with a coating material made of the flame retardant resin composition.
- a coating material made of the flame retardant resin composition In order to manufacture an insulated wire, it is obtained by extruding the flame retardant resin composition around a conductor to insulate the conductor.
- an electric wire extrusion molding machine or the like used for manufacturing a normal insulated wire can be used.
- the conductor used for an insulated wire can utilize what is used for a normal insulated wire.
- the diameter of the conductor of an insulated wire, the thickness of an insulating layer, etc. are not specifically limited, According to the use etc. of an insulated wire, it can determine suitably.
- the insulating layer using the flame retardant resin composition may be a single layer or may be composed of two or more layers.
- Example 1 (Preparation of flame retardant) While stirring magnesium hydroxide [manufactured by Nihonkaikai Co., Ltd .: industrial magnesium hydroxide (average particle size 10 ⁇ m)] in a super mixer at a temperature of 200 ° C., polypropylene having a crystallinity of 75% as a surface treatment agent [manufactured by Mitsui Chemicals, Inc. : 210P] was gradually put into the mixer over about 5 minutes, and further stirred for about 20 minutes to obtain a flame retardant (described as “surface-treated water mug” in Tables 1 and 2). The addition amount of the surface treatment agent in the flame retardant was 0.1% by mass.
- the crystallinity is a value measured by the X-ray diffraction method.
- Cold resistance test method This was performed in accordance with JIS C3055. That is, the insulated wire was cut to a length of 38 mm to form a test piece, the test piece was mounted on a cold resistance tester, cooled to a predetermined temperature, hit with a striking tool, and the state after the test piece was hit was observed . Using five test pieces, the temperature at which all five test pieces were broken was defined as the cold resistant temperature.
- Examples 2 to 7 (Table 1), Comparative Examples 1 to 7 (Table 2) A flame retardant and a flame retardant resin composition were prepared in the same manner as in Example 1 except that the surface treatment agent for the flame retardant was changed to the following materials and addition amounts to obtain an insulated wire. In the same manner as in Example 1, the amount of discharge was measured when adjusting the flame-retardant resin composition, and a cold resistance test of the insulated wire was performed. The results are shown in Tables 1 and 2.
- Example 2 Polypropylene [manufactured by Clariant: 1302] -Crystallinity: 80% -Addition amount: 10% by mass
- Example 3 Polyethylene [Mitsui Chemicals Co., Ltd .: 410P] -Crystallinity: 85% -Addition amount: 0.1% by mass
- Example 4 Polyethylene [Mitsui Chemicals Co., Ltd .: 100P] -Crystallinity: 90% -Addition amount: 10% by mass
- Example 5 ⁇ Ethylene-ethyl acrylate copolymer [Nippon Polyethylene Co., Ltd .: 4250] -Crystallinity: 65% ⁇ Addition amount: 5% by mass
- Example 6 Ethylene-vinyl acetate copolymer [Nippon Polyethylene Co., Ltd .: 440] -Crystallinity: 60% ⁇ Addition amount: 5% by mass
- Example 7 Metallocene polymerized polyethylene [manufacture
- Comparative Example 1 Polypropylene [manufactured by Clariant: 1602] -Crystallinity: 50% -Addition amount: 1.0 mass% Comparative Example 2 Polypropylene [Clariant 1502] -Crystallinity: 55% -Addition amount: 12% by mass Comparative Example 3 ⁇ Polyethylene [Clariant, 191] -Crystallinity: 55% -Addition amount: 0.08 mass% Comparative Example 4 ⁇ Polyethylene [manufactured by Clariant: 520] -Crystallinity: 45% -Addition amount: 12% by mass Comparative Example 5 ⁇ Stearic acid [Nippon Yushi Co., Ltd .: NAA173A] ⁇ Addition amount: 5% by mass Comparative Example 6 ⁇ Zinc stearate [Nippon Yushi Co., Ltd .: Unistar] ⁇ Addition amount: 5% by mass Comparative Example 7 ⁇ Methacrylsilane [manufactured by Shin
- Example 1 the cold resistance of the electric wires was good at -25 ° C to -40 ° C, and the discharge rate of the composition was good at 500 kg / h or more.
- Table 2 in Comparative Examples 1 to 7, the cold resistance of the electric wires is ⁇ 15 ° C. to ⁇ 5 ° C., and the discharge rate of the composition is 250 kg / h or less. Cold resistance and discharge amount were inferior.
- Experimental Example 1 uses a polypropylene having a crystallinity of 60% and a weight average molecular weight of 7000 as a surface treatment agent, adjusts the flame retardant and resin composition in the same manner as in Example 1, creates an insulated wire, A sex test was performed.
- Experimental example 2 uses polypropylene having a crystallinity of 60% and a weight average molecular weight of 20000 as the surface treatment agent, and prepared an insulated wire by adjusting the flame retardant and the resin composition in the same manner as in experimental example 1, thereby producing cold resistance.
- a test was conducted. The results of the test are shown in Table 3. As shown in Table 3, when the crystallization degree of the surface treatment agent of the flame retardant is the same, it can be confirmed that Experimental Example 1 having a smaller weight average molecular weight has better cold resistance than Experimental Example 2. It was.
- molecular weight is a polystyrene conversion weight average molecular weight measured by GPC method.
- the measurement conditions of GPC are as follows. ⁇ Column: TSK-gel manufactured by Tosoh Corporation ⁇ Measurement temperature: 100 °C ⁇ Solvent: Xylene
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Abstract
Description
実施例1
〔難燃剤の調製〕
水酸化マグネシウム〔日本海水社製:工業用水酸化マグネシウム(平均粒径10μm)〕を温度200℃のスーパーミキサー内で撹拌しながら、表面処理剤として結晶化度が75%のポリプロピレン[三井化学社製:210P]を約5分かけてミキサー内に徐々に投入した後、更に約20分撹拌して難燃剤(表1及び表2では「表面処理水マグ」と記載した)を得た。難燃剤における表面処理剤の添加量は0.1質量%とした。
〔X線回折測定方法〕
・X線回折装置:理学社製X線回折装置RAD2Cシステム
・光源:銅Kα1線
・回折角度2θ:10~70°
〔結晶化度の算出方法〕
樹脂の非晶質部分と結晶質部分の両方の回折ピークの積分強度から、下記の式を用いて結晶化度を算出した。
結晶化度(%)=(結晶質部分の積分強度/非晶質部分と結晶質部分の積分強度)×100
上記難燃剤100質量部、基剤樹脂としてポリプロピレン系樹脂[日本ポリプロ社製、EC7]100質量部、酸化防止剤[チバスペシャリテーケミカルズ社製、イルガノックス1010]1質量部を、200℃で混合した後、ペレタイザーにてペレット状に成形して、難燃性樹脂組成物のペレットを得た。尚、このペレット作成時に難燃性樹脂組成物の吐出量を測定した。その結果を表1に示す。
二軸混練機を用いて上記難燃性樹脂組成物のペレットを用い、押出し成形機により、軟銅線を7本撚り合わせた軟銅より線の導体(断面積:0.5mm2)の外周に0.2mm厚で押出被覆して、難燃性樹脂組成物からなる絶縁体により導体の周囲が絶縁被覆された絶縁電線を得た。得られた絶縁電線の耐寒性試験を行った。その結果を表1に示す。耐寒性試験方法は、下記の通りである。
JIS C3055に準拠して行った。すなわち絶縁電線を38mmの長さに切断し試験片とし、試験片を耐寒性試験機に装着し、所定の温度まで冷却し、打撃具で打撃して、試験片の打撃後の状態を観察した。5本の試験片を用いて、5本の試験片が全て割れた温度を耐寒温度とした。
難燃剤の表面処理剤を下記の材料、添加量とした以外は、実施例1と同様にして、難燃剤と難燃性樹脂組成物を調整し、絶縁電線を得た。実施例1と同様に難燃性樹脂組成物の調整の際に吐出量を測定し、絶縁電線の耐寒性試験を行った。結果を表1及び表2に示す。
実施例2
・ポリプロピレン[クラリアント社製:1302]
・結晶化度:80%
・添加量:10質量%
実施例3
・ポリエチレン[三井化学社製:410P]
・結晶化度:85%
・添加量:0.1質量%
実施例4
・ポリエチレン[三井化学社製:100P]
・結晶化度:90%
・添加量:10質量%
実施例5
・エチレン-エチルアクリレート共重合体[日本ポリエチレン社製:4250]
・結晶化度:65%
・添加量:5質量%
実施例6
・エチレン-ビニルアセテート共重合体[日本ポリエチレン社製:440]
・結晶化度:60%
・添加量:5質量%
実施例7
・メタロセン重合ポリエチレン[日本ポリエチレン社製:640]
・結晶化度:90%
・添加量:5質量%
・ポリプロピレン[クラリアント社製:1602]
・結晶化度:50%
・添加量:1.0質量%
比較例2
・ポリプロピレン[クラリアント社製:1502]
・結晶化度:55%
・添加量:12質量%
比較例3
・ポリエチレン[クラリアント社製:191]
・結晶化度:55%
・添加量:0.08質量%
比較例4
・ポリエチレン[クラリアント社製:520]
・結晶化度:45%
・添加量:12質量%
比較例5
・ステアリン酸[日本油脂社製:NAA173A]
・添加量:5質量%
比較例6
・ステアリン酸亜鉛[日本油脂社製:ユニスター]
・添加量:5質量%
比較例7
・メタクリルシラン[信越化学社製:KBM502]
・添加量:5質量%
難燃剤における表面処理剤の重量平均分子量の影響を見るための試験を行った。実験例1は表面処理剤として結晶化度が60%、重量平均分子量が7000のポリプロピレンを用いて、実施例1と同様にして難燃剤、樹脂組成物を調整し、絶縁電線を作成し、耐寒性試験を行った。また実験例2は表面処理剤として結晶化度が60%、重量平均分子量が20000のポリプロピレンを用いて、実験例1と同様にして難燃剤、樹脂組成物を調整し絶縁電線を作成し耐寒性試験を行った。試験の結果を表3に示す。表3に示すように、難燃剤の表面処理剤の結晶化度が同じである場合、重量平均分子量が小さい実験例1の方が、実験例2よりも耐寒性が良好であることが確認できた。
・カラム:東ソー社製TSK-gel
・測定温度:100℃
・溶媒:キシレン
Claims (7)
- 水酸化マグネシウムの表面が有機高分子からなる表面処理剤により表面処理された難燃剤であって、前記表面処理剤の結晶化度が60%以上であることを特徴とする難燃剤。
- 前記表面処理剤が炭化水素系樹脂であることを特徴とする請求項1記載の難燃剤。
- 前記表面処理剤が、ポリエチレン、ポリプロピレン、エチレン-エチルアクリレート共重合体、エチレン-ビニルアセテート共重合体及びそれらの誘導体のうち少なくとも1種類以上を含有することを特徴とする請求項1又は2に記載の難燃剤。
- 難燃剤中の前記表面処理剤の含有量が、0.1~10質量%であることを特徴とする請求項1~3のいずれか1項に記載の難燃剤。
- 前記水酸化マグネシウムの平均粒径が、0.1~20μmであることを特徴とする請求項1~4のいずれか1項に記載の難燃剤。
- 請求項1~5のいずれか1項に記載の難燃剤が、少なくとも基材樹脂に添加されていることを特徴とする難燃性樹脂組成物。
- 請求項6に記載の難燃性樹脂組成物からなる被覆材により、導体の周囲が絶縁被覆されていることを特徴とする絶縁電線。
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US13/513,919 US8907003B2 (en) | 2010-02-03 | 2011-02-02 | Flame retardant, flame-retardant resin composition, and insulated wire |
CN201180008249.1A CN102741378B (zh) | 2010-02-03 | 2011-02-02 | 阻燃剂、阻燃性树脂组合物和绝缘电线 |
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WO2001037054A1 (fr) * | 1999-11-16 | 2001-05-25 | Mitsui Chemicals, Incorporated | Composition de resine pour toners et toner |
JP3636675B2 (ja) | 2001-06-06 | 2005-04-06 | 日本ユニカー株式会社 | 難燃性オレフィン系樹脂組成物およびそれから得られた押出成形品 |
JP2004083612A (ja) | 2002-08-22 | 2004-03-18 | Furukawa Electric Co Ltd:The | 樹脂組成物および絶縁電線 |
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JPS62151464A (ja) * | 1985-12-26 | 1987-07-06 | Nippon Steel Chem Co Ltd | 樹脂組成物 |
WO2008062820A1 (fr) * | 2006-11-21 | 2008-05-29 | Autonetworks Technologies, Ltd. | Composé ignifuge, composition ignifuge, câble isolé, faisceau de câbles et procédé de fabrication d'une composition ignifuge |
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US8907003B2 (en) | 2014-12-09 |
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DE112011100431T5 (de) | 2013-03-07 |
JP5589414B2 (ja) | 2014-09-17 |
US20120241189A1 (en) | 2012-09-27 |
JP2011157521A (ja) | 2011-08-18 |
CN102741378B (zh) | 2014-09-03 |
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