Preparation method of elastic eraser material

A technology of elastic eraser and elastic body, which is applied in the direction of eraser, printing, office supplies, etc., can solve the problems of poor elasticity and fracture of the eraser, and achieve the effect of good cold resistance, low heat generation, and excellent low temperature resistance

Inactive Publication Date: 2019-07-26
邵淑华
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The technical problem to be solved by the present invention: Aiming at the problem that the traditional eraser has relatively poor elasticity and will break if a little carelessness, a preparation method of elastic eraser material is provided

Method used

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  • Preparation method of elastic eraser material

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Embodiment Construction

[0025] In parts by weight, respectively weigh 50-60 parts of thermoplastic polyurethane elastomer, 20-30 parts of styrene butadiene rubber, and 1 to 5 parts of white carbon black. Mix the thermoplastic polyurethane elastomer and styrene butadiene rubber in an internal mixer. , Mix 6-10min at a temperature of 160~170℃ and a stirring speed of 300~500r / min to obtain Mixture A. Add white carbon to Mix A and continue mixing for 10~20min to obtain Mixture B. Place the mixture B in a flat vulcanizer, preheat it at a temperature of 160~170℃ for 10~15min, then press it at a temperature of 160~170℃ and a pressure of 15~20MPa for 10~15min, and cool it to room temperature. Obtain modified styrene-butadiene rubber; in parts by weight, respectively weigh 40-60 parts of modified styrene-butadiene rubber, 50-70 parts of butadiene rubber, 50-60 parts of plasticizer epoxy soybean oil, 20-30 parts Filler white carbon black, 1 to 5 parts of stabilizer calcium stearate, 0.2 to 0.5 parts of lubrican...

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Abstract

The invention relates to a preparation method of an elastic eraser material and belongs to the technical field of stationery and sporting goods materials. The preparation method includes: adopting a mechanical blending method to use thermoplastic polyurethane elastomer to modify butadiene-styrene rubber, blending butadiene rubber with the modified butadiene-styrene rubber to serve as a raw material, combining with auxiliaries like plasticizer epoxy soybean oil, filler white carbon black, stabilizer and lubricant, and performing hot-press forming to obtain the elastic eraser material. Polyurethane is high in hardness and rich in elasticity and has high mechanical strength, oil resistance, ozone resistance and excellent low-temperature performance; the thermoplastic polyurethane elastomer isused to modify the butadiene-styrene rubber, so that the modified butadiene-styrene rubber has elasticity of the polyurethane elastomer; the butadiene rubber has the advantages of high elasticity, high wear resistance, high cold resistance, low heat yield, high deflection resistance and good dynamic performance; by blending the butadiene rubber with the modified butadiene-styrene rubber, the eraser material prepared by the method has high elasticity, and breakage when in use is avoided.

Description

Technical field [0001] The invention relates to a method for preparing an elastic eraser material, and belongs to the technical field of materials for stationery and sports. Background technique [0002] Eraser (English: eraser (US), rubber (English, Australian)), also known as eraser, eraser, eraser, paper eraser, eraser cloth, eraser, eraser, used to wipe ink on paper with pencil Stationery. They are mostly white, brown or pink, but with the emergence of new materials, the current eraser can be any color. The main constituent material of the eraser is rubber. Some higher-priced erasers contain plastic ingredients. Tools for wiping off chalk or whiteboard handwriting are generally called stucco or (black) boards. Nowadays, there are many types of erasers to meet different needs. Some pencils have a small eraser at the end. These erasers are mostly pink, and the surface is smooth gel. They perform well in most occasions, but sometimes they stain the paper. If the effort i...

Claims

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Application Information

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IPC IPC(8): C08L9/00C08L9/06C08L75/04C08L91/00C08L83/04C08K3/36C08K5/098B43L19/00B29B7/20B29B7/28B29C35/02B29C48/92B29C51/46B29C69/02
CPCB29B7/20B29B7/28B29C35/02B29C48/92B29C51/46B29C69/02B43L19/00C08K2201/014C08L9/00C08L91/00C08L2205/035C08L2207/04C08L9/06C08L75/04C08L83/04C08K3/36C08K5/098
Inventor 邵淑华
Owner 邵淑华
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