摘要:
Provided are: a carbon fiber bundle which has a large value of single-fiber fineness and excellent productivity and which, despite this, contains few interlaced single fibers therein and has excellent spreadability; and precursor fibers which are suitable for use in producing the carbon fiber bundle. The precursor fibers are a carbon-fiber-precursor acrylic fiber bundle which comprises a polyacrylonitrile copolymer comprising 95-99 mol % acrylonitrile units and 1-5 mol % hydroxyalkyl (meth)acrylate units and which has a single-fiber fineness of 1.5-5.0 dtex. In the acrylic fiber bundle, the cross-section of each single fiber which is perpendicular to the fiber axis has a shape that has a roundness of 0.9 or less. The roundness is a value determined using equation (1) where S and L are the cross-sectional area and the circumferential length, respectively, of a single fiber which are obtained by examining, with an SEM, the cross-section of the single fiber which is perpendicular to the fiber axis and analyzing the obtained image. Roundness=4pS/L2 (1)
摘要:
A power tool includes a main housing, a motor, a hammer case, an end-tool holding part, a driving-force transmitting mechanism, a light-unit mounting part, a light unit, and a cover. The motor is accommodated in the main housing and is configured to generate a driving force. The hammer case has an outer peripheral surface. The end-tool holding part is configured to hold an end tool. The driving-force transmitting mechanism is accommodated in the hammer case. The driving-force transmitting mechanism is configured to transmit the driving force to the end-tool holding part. The light-unit mounting part is formed integrally with the hammer case. The light unit is mounted to the light-unit mounting part. The cover covers the outer peripheral surface of the hammer case and accommodates the light-unit mounting part and the light unit.
摘要:
A power tool includes a hook portion having a hook holding portion, which is provided in a housing and has engaging teeth provided in the housing. A hook having a shaft portion is inserted into the hook holding portion and provided with fitting teeth meshing with the engaging teeth An elastic body is adapted to push the hook against a handle portion at all times, and a slip-off preventing part holding portion is adapted to move the hook in a direction of an axis thereof against a force of the elastic body and to cancel the mesh between the teeth to thereby enable the hook to turn.
摘要:
A power tool includes a hook portion comprising a hook holding portion 20, which is provided in a housing 1 and has engaging teeth 47 provided in a housing 1, and also comprising a hook 2 having a shaft portion 30, which is inserted into the hook holding portion 20 and provided with fitting teeth 31 meshing with the engaging teeth 47, an elastic body 27 adapted to push the hook 2 against a handle portion at all times, and a slip-off preventing part holding portion adapted to move the hook 2 in a direction of an axis thereof against a force of the elastic body 2 and to cancel the mesh between the teeth to thereby enable the hook 2 to turn.
摘要:
The present invention relates to a method for producing a prepreg which contains reinforcing fibers and a matrix resin composition with the weight per square meter of the reinforcing fibers being 250-2,000 g/m2. The production method comprises the following steps (1)-(3): (1) a matrix resin composition blending step for obtaining a matrix resin composition by mixing an epoxy resin, a radically polymerizable unsaturated compound, an epoxy resin curing agent and a polymerization initiator that generates radicals, in said step the content of the radically polymerizable unsaturated compound relative to 100% by mass of the total of the epoxy resin and the radically polymerizable unsaturated compound being 10-25% by mass; (2) a matrix resin composition impregnating step; and (3) a surface viscosity increasing step.
摘要翻译:本发明涉及含有增强纤维的预浸料坯的制造方法和每平方米加强纤维的重量为250〜2000g / m 2的基质树脂组合物。 制造方法包括以下步骤(1) - (3):(1)通过混合环氧树脂,可自由基聚合的不饱和化合物,环氧树脂固化剂和聚合物来获得基质树脂组合物的基质树脂组合物混合步骤 在所述步骤中,自由基聚合性不饱和化合物的含量相对于环氧树脂和自由基聚合性不饱和化合物的总量的100质量%为10〜25质量%,生成自由基的引发剂; (2)基质树脂组合物浸渍步骤; 和(3)表面粘度增加步骤。
摘要:
The present invention relates to a method for producing a prepreg which contains reinforcing fibers and a matrix resin composition with the weight per square meter of the reinforcing fibers being 250-2,000 g/m2. The production method comprises the following steps (1)-(3): (1) a matrix resin composition blending step for obtaining a matrix resin composition by mixing an epoxy resin, a radically polymerizable unsaturated compound, an epoxy resin curing agent and a polymerization initiator that generates radicals, in said step the content of the radically polymerizable unsaturated compound relative to 100% by mass of the total of the epoxy resin and the radically polymerizable unsaturated compound being 10-25% by mass; (2) a matrix resin composition impregnating step; and (3) a surface viscosity increasing step.
摘要翻译:本发明涉及含有增强纤维的预浸料坯的制造方法和每平方米加强纤维的重量为250〜2000g / m 2的基质树脂组合物。 制造方法包括以下步骤(1) - (3):(1)通过混合环氧树脂,可自由基聚合的不饱和化合物,环氧树脂固化剂和聚合物来获得基质树脂组合物的基质树脂组合物混合步骤 在所述步骤中,自由基聚合性不饱和化合物的含量相对于环氧树脂和自由基聚合性不饱和化合物的总量的100质量%为10〜25质量%,生成自由基的引发剂; (2)基质树脂组合物浸渍步骤; 和(3)表面粘度增加步骤。
摘要:
A power tool includes a hook portion comprising a hook holding portion 20, which is provided in a housing 1 and has engaging teeth 47 provided in a housing 1, and also comprising a hook 2 having a shaft portion 30, which is inserted into the hook holding portion 20 and provided with fitting teeth 31 meshing with the engaging teeth 47, an elastic body 27 adapted to push the hook 2 against a handle portion at all times, and a slip-off preventing part holding portion adapted to move the hook 2 in a direction of an axis thereof against a force of the elastic body 2 and to cancel the mesh between the teeth to thereby enable the hook 2 to turn.
摘要:
An electric driver includes a hook portion which is constituted by a deformable hook-like portion and a connecting portion for connecting the hook-like portion to the handle. The hook-like portion is constituted by a base portion connected to the connecting portion and a bent portion continuous to the base portion, and a front end portion continuous to the bent portion and arranged at a position substantially opposed to the base portion. The front end portion and the base portion can be proximate to and remote from each other. The connecting portion holds the hook-like portion in a direction substantially the same as a direction in which the handle extends. The hook-like portion is pivotably held on a first rotating axis center extending in substantially the same direction as the handle.
摘要:
A power tool includes a main housing, a motor, a hammer case, an end-tool holding part, a driving-force transmitting mechanism, a light-unit mounting part, a light unit, and a cover. The motor is accommodated in the main housing and is configured to generate a driving force. The hammer case has an outer peripheral surface. The end-tool holding part is configured to hold an end tool. The driving-force transmitting mechanism is accommodated in the hammer case. The driving-force transmitting mechanism is configured to transmit the driving force to the end-tool holding part. The light-unit mounting part is formed integrally with the hammer case. The light unit is mounted to the light-unit mounting part. The cover covers the outer peripheral surface of the hammer case and accommodates the light-unit mounting part and the light unit.