CN103158407A - Preparatory method of magnetic eraser - Google Patents

Abstract

The invention discloses a preparatory method of a magnetic eraser. The magnetic eraser comprises a first magnetic portion, a second non-magnetic portion and a third magnetic area, wherein the third magnetic area is located between the first magnetic portion and the second non-magnetic portion, and adding magnetic materials can not produce new harmful substances, can not influence the shape of the eraser, and has the properties of being good in stability and the like. Through adoption of the method, present production technology and production efficiency are not influenced, and a little cost is increased. The eraser can not only satisfy actual requirements, but also be beneficial for working and cashing. The eraser is small and exquisite and small in occupied space, enables the working to be neat, ornamental and practical, brings convenience to the working, and is suitable for office workers to enjoy a comfortable and fashionable working environment.

Description

A kind of preparation method of magnetic eraser

Technical field

The present invention relates to a kind of preparation method of office appliance, i.e. a kind of preparation method of magnetic eraser.

Background technology

For the characteristics of current e epoch working environment, the health of working environment, ecological problem have become as shadow retinue that working environment is anxious to be treated.The green health of working environment is the development trend of current working environment.Office is stay in one day at most place of white collar, it is built into the working environment of a green, fashion, health, and abominable working environment affects operating efficiency, wishes to improve working environment, the environmental protection concept of office can be followed: economize on resources, reduce and pollute; Green living, environmental protection is chosen; Reuse, repeatedly utilize; Classification is reclaimed, circular regeneration; Conservation of nature, all things on earth coexists; Office furniture enters into hommization, comfortable, enjoyment epoch! Therefore, continue to bring out out the manufacturer of the office furniture of professional production, medium-to-high grade serial product of exploitation on market, its objective is that satisfying white collars not only enjoys green, fashion working environment, more can have health, the health that makes progress and mood at any time.

Plastic eraser is wiped normally flexible PVC, its outward appearance is usually clean in vain, feels very fine and smooth appearance, and a wiping exfoliation normally rule can stick up; Rubber rubber is wiped majority and is looked that color is a bit dark, feels somewhat coarse, the particle that exfoliation is normally less and at random.Erasing rubber the earliest is mainly to use rubber production, and the plastic eraser wiping is with plastics, and namely polyvinyl chloride (PVC) is primary raw material for primary raw material, by extrusion molding.Due to technique, raw-material reason, plastic eraser can be made monochrome, polychrome, and the plastic eraser of casper is liked by the student more. be characterized in wiping word excellent performance, easy to use.The erasing rubber that rubber is done is cross-linked structure, is solid netted molecular structure, and wearability is higher than plastics, and elasticity is higher than plastics, is more suitable in making erasing rubber.The erasing rubber that plastics are done is linear molecular structure, and what lean on is the intensity that the active force between molecule provides, harder, therefore need to add a large amount of plasticizer that erasing rubber is made in its deliquescing (such as flexible PVC), characteristics are more cheap than rubber, and processing is simple, but wearability and elasticity are poorer than rubber.Certainly some plastics, such as polyurethane, do not add plasticizer just can provide wear-resisting and elasticity, but cost ratio rubber is expensive.TPR erasing rubber material main component is SEBS rubber, inorganic fill powder and softening oil (environmental protection).

In addition, the office accommodation of placing on desktop often can fall on the ground because place improper, can bring inconvenience to use, again according to present office accommodation feature: common office partition is to dodge silver color or linen office accommodation in the market, and specification can be customized as requested; Generally, the diversification of working space is planned to meet separation, beautifies, is kept out the wind, the intelligence design of coordination, economic dispatch characteristics, the difference of office kenel can be made multiple combination, and sheet material adopts the Q195 cold-rolled steel sheet usually, but the finishing material of the complexion colour match of diversification; Waterproof, wear-resisting, high temperature resistant; Scratch the senior ABS resin materials of annex employing such as hand, firm, wear-resisting, colour-fast.The electrostatic powder plastic-blasting is often adopted on the top layer, and is without organic solution, pollution-free.

Summary of the invention

In conjunction with present office accommodation feature, the present invention designs a kind of magnetic eraser, is to be made by the magnetic material of tool, is fit to be used in conjunction with the office's apparatus that is widely used at present.Be particularly useful for being provided with in the zone that the nearly both hands forearm at one's side of desktop or the desk tops of writing is placed the desk of magnetic absorption sheet material.Magnetic eraser can be avoided losing or falling on the ground just can not find, the convenient use.And product performance is good: wilfulness is good, yellowing resistance is good, do not hinder the characteristics such as paper, environment-protecting asepsis.

The present invention is achieved through the following technical solutions:

A kind of preparation method of magnetic eraser, the structure of erasing rubber comprise the magnetic section of containing, non-ly contain magnetic section, magnetic area, and magnetic area is containing magnetic section and non-containing between magnetic section; Wherein, containing magnetic section is prepared by following methods:

After ratio mixes by weight natural rubber, starch-modified polyvinylalcohol, phthalic acid zinc fat, adipic acid bizinc resin, N-methyl dried meat amine, after adding magnetisable material to mix, add crosslinking agent and blowing agent, the moulding in 5～10 minutes of then mixture being pressurizeed under 120～150 ℃ of conditions gets final product again;

Natural rubber	40～60 parts
		Starch-modified polyvinylalcohol	40～60 parts
Phthalic acid zinc fat	30～50 parts
		The adipic acid bizinc resin	10～15 parts
N-methyl dried meat amine	40～50 parts
		Crosslinking agent	5～10 parts
Blowing agent	25～35 parts
		The grease softening agent	5～10 parts
Magnetisable material	10～20 parts.

In preferred embodiments, described magnetisable material is a kind of in straight iron powder, carbonyl iron, magnetic iron ore, positive ferrite.

In preferred embodiments, described blowing agent is azo two isobutyl fat.

In preferred embodiments, described magnetisable material is magnetic oxide.

In preferred embodiments, described magnetic oxide particle diameter 10～500nm, concrete, described magnetic oxide particle diameter 20～50nm effect is better.

In preferred embodiments, described magnetic area exists with the form of inlaying magnetisable material section or outer cover magnetic sheath.

Beneficial effect: take technical scheme of the present invention, need not change the existing process equipment of producing, process conditions, processing step does not affect production efficiency yet, and the cost increase is very little.Product have wilful good, yellowing resistance is good, oil yield in critical field, the eraser chips of strong detergency, rubber wiping is in strip, smooth surface, do not stain, and do not hinder paper, the characteristics of environment-protecting asepsis.Being beneficial to office takes in, small and exquisite, do not take up space, can make office more neat, attractive in appearance practical again, be the convenience that office brings, be suitable for the office clan to enjoy working environment comfortable, fashion.

The specific embodiment

Following non-limiting example can make the present invention of those of ordinary skill in the art's comprehend, but does not limit the present invention in any way.

Embodiment 1

I, material

After natural rubber, starch-modified polyvinylalcohol, phthalic acid zinc fat, adipic acid bizinc resin, N-methyl dried meat amine are mixed, after adding each constituent of iron powder and erasing rubber to mix, add crosslinking agent and blowing agent azo two isobutyl fat, the moulding in 5～10 minutes of then mixture being pressurizeed under 120～150 ℃ of conditions gets final product again.

Natural rubber	60 parts
		Starch-modified polyvinylalcohol	40～60 parts
Phthalic acid zinc fat	30～50 parts
		The adipic acid bizinc resin	10～15 parts
N-methyl dried meat amine	40～50 parts
		Crosslinking agent	5～10 parts
Blowing agent azo two isobutyl fat	25～35 parts
		The grease softening agent	5～10 parts
Magnetisable material	10～20 parts

Magnetic material: magnetisable material used has straight iron powder, carbonyl iron, magnetic iron ore, positive ferrite etc. usually, and generally at 10～500nm, optimal selection is 20～50nm as its needed magnetic oxide particle diameter of magnetic eraser.

Adopt the magnetic eraser of said method preparation, do not need to change original production process, easily implement.

The structure of II, magnetic eraser

Magnetic eraser essence can be divided into Three regions, i.e. the non-magnetic that contains that contains magnetic section 1 and afterbody at top

Section 2; Contain magnetic section 1 and non-ly contain that between magnetic section 2, the erasing rubber middle part is provided with a magnetic area 3; Described magnetic area 3 exists with the form of inlaying magnetisable material section 31 or outer cover magnetic sheath 32.

The magnetic eraser relevant parameter is adjusted, and for example width and thickness, need to determine in conjunction with the test result of magnetic intensity.

The setting of the magnetic area 3 of magnetic eraser fully takes into account the situations such as magnetic intensity, can arrange the magnetic eraser of different in width, thickness, quality, to meet different situation requirements.The present invention can also by changing position and the color of magnetic eraser, be applied in different office appliances.

Adding of magnetisable material do not produce new harmful substance, do not affect the shape of erasing rubber, and the good characteristics such as stability are arranged.Therefore, take as above technical measures, do not affect existing production technology, do not affect production efficiency, the cost increase is very little.The magnetic eraser of producing so not only can satisfy actual requirement, also helping office takes in, small and exquisite, do not take up space, can make office more neat, attractive in appearance practical again, be the convenience that office brings, be suitable for the office clan to enjoy working environment comfortable, fashion.

Claims (7)

1. the preparation method of a magnetic eraser is characterized in that: magnetic eraser comprises the magnetic section (1) that contains, non-ly contains magnetic section (2), magnetic area (3), and magnetic area (3) is positioned at and contains magnetic section (1) and non-containing between magnetic section (2); Wherein, containing magnetic section (1) is prepared by following methods:

After ratio mixes by weight natural rubber, starch-modified polyvinylalcohol, phthalic acid zinc fat, adipic acid bizinc resin, N-methyl dried meat amine, after adding magnetisable material to mix, add crosslinking agent and blowing agent, the moulding in 5 ~ 10 minutes of then mixture being pressurizeed under 120 ~ 150 ℃ of conditions gets final product again;

Natural rubber 40 ~ 60 parts Starch-modified polyvinylalcohol 40 ~ 60 parts Phthalic acid zinc fat 30 ~ 50 parts The adipic acid bizinc resin 10 ~ 15 parts N-methyl dried meat amine 40 ~ 50 parts Crosslinking agent 5 ~ 10 parts Blowing agent 25 ~ 35 parts The grease softening agent 5 ~ 10 parts Magnetisable material 10 ~ 20 parts.

2. the preparation method of magnetic eraser according to claim 1 is characterized in that: described magnetisable material is a kind of in straight iron powder, carbonyl iron, magnetic iron ore, positive ferrite.

3. the preparation method of magnetic eraser according to claim 2, it is characterized in that: described blowing agent is azo two isobutyl fat.

4. the preparation method of according to claim 1 or 3 described magnetic erasers, it is characterized in that: described magnetisable material is magnetic oxide.

5. the preparation method of magnetic eraser according to claim 4, is characterized in that: described magnetic oxide particle diameter 10～500nm.

6. the preparation method of magnetic eraser according to claim 5, is characterized in that: described magnetic oxide particle diameter 20 ~ 50nm.

7. the preparation method of magnetic eraser according to claim 6 is characterized in that: described magnetic area (3) exists with the form of inlaying magnetisable material section (31) or outer cover magnetic sheath (32).