CN106380956A - Preparation method for protective film of rubber plates - Google Patents

Abstract

The invention provides a preparation method for a protective film of rubber plates; the preparation method comprises the steps: 1) according to the ratio, adding water and polyvinyl alcohol into a reaction kettle, heating and stirring, ensuring that polyvinyl alcohol is not deposited to the bottom of the reaction kettle in the heating process, when the water temperature rises to 95 DEG C or more, carrying out heat preservation for 3-6 hours, and continuing to stir until the polyvinyl alcohol is completely dissolved; 2) under the condition of stirring, reducing the temperature and cooling to 75 DEG C, and then adding ethanol according to the ratio; 3) according to the corresponding ratio, adding glycerol, and stirring evenly; 4) under the condition of stirring, according to the corresponding ratio, adding a defoaming agent, a preservative, a dispersing agent and a color crystal additive, and stirring evenly; and 5) cooling and sealing to prevent volatilization. The protective film can meet use of various special-shaped plates; the preparation method can produce the novel protective film which can be used immediately while being prepared, no matter what the shape of the surface of the rubber plates is, the perfect coated rubber plate effect is achieved through coating, and a concave-convex structure can be brushed for multiple times, so as to make the coating effect of the film after wind drying better.

Description

A kind of preparation method of the diaphragm of rubber slab

Technical field

The present invention relates to the application technology of a kind of rubber protective film technology application and novel high polymer functional material.

Background technology

In boat article production process, in order to reach the effect of damping noise reduction, be in a large number using rubber plate, and rubber slab Material soft surface, during with other products part assembly and connection, inevitably has and the exterior injury such as scrapes, applies, clashing into, wearing and tearing, Lead to its surface to be destroyed because repeatedly rubbing, and be stained with the spot being difficult to clean off, lead to later stage cleaning project amount huge.

Existing frequently-used diaphragm is usually the diaphragm of PE material, again with black and white film and blue protection film in PE diaphragm Usage frequency highest.But, the PE diaphragm on market is typically all to be used for flat board, concavo-convex because special requirement has for surface At uneven place, such as door handle, PE film can not play a protective role.

Content of the invention

The goal of the invention of the present invention is to overcome the problems referred to above, devising and printing on surface of rubber plate can be protected, prevent Abrasion, it is stained with spot, again can easier a kind of rubber protective film when in use.

The technical scheme is that：

A kind of preparation method of the diaphragm of rubber slab, is following steps：

1）By proportioning, water, polyvinyl alcohol are added inside reactor, heats and stir, in heating process, ensure polyvinyl alcohol not Deposition reaction bottom portion, treats that water temperature rises to more than 95 DEG C, is incubated 3-6 hour, is stirred continuously until that polyvinyl alcohol all dissolves；

2）Under stirring condition, progressively cooling down adds ethanol to 75 DEG C, then by proportioning, when ethanol adds, should adopt shower nozzle material feeding Device dispersion adds, and ensures reactor stirring simultaneously, prevents ethanol bulk deposition, causes in solution polyvinyl alcohol in ethanol In clear go out, lead to that white flock insoluble matter occurs；

3）Add glycerine by corresponding proportion, stir；

4）Finally under stirring, progressively press corresponding proportion and add defoamer, preservative, dispersant, color crystalline substance additive, stirring Uniformly；

5）Cooling, and contained with corresponding container, sealing, prevent from volatilizing.

The present invention can meet various abnormal shape sheet materials use, the present invention produce a kind of can be now with the current novel protected Film, no matter printing on surface of rubber plate is any shape, may pass through and smears, and reaches the effect of perfect rubber-coated plate, for concavo-convex Can brush several times at structure, so that the film coated effect after air-drying is more preferable more.

Specific embodiment

The invention will be further described below.

This rubber protective film formula is as follows：

100 parts of water

Polyvinyl alcohol 3-5 part

Ethanol 20-30 part

Glycerine 2-3 part

Defoamer 0.01-0.02 part

Dispersant 0.1-0.2 part

Preservative 0.1-0.2 part

Color is brilliant（Greyish white）0.5-2 part

Defoamer tributyl phosphate；Dispersant is the mixture of unsaturated polynary carboxylic ester polymer and organosiloxane copolymer；

Preservative is phenol.

Equipment：Reactor, is furnished with the devices such as heating-cooling, stirring, material feeding, temperature control.

Instrument：Ladle with filter screen, filter screen mesh number 400 mesh, handle length is more than reactor depth.

Preparation technology：

1）By proportioning, water, polyvinyl alcohol are added inside reactor, heats and stir, in heating process, ensure polyvinyl alcohol not Deposition reaction bottom portion, treats that water temperature rises to more than 95 DEG C, is incubated 3-6 hour（Depending on reactor size）, it is stirred continuously until Polyvinyl alcohol all dissolves（Can stop stirring, be salvaged from bottom with band filter screen ladle, see whether still there is undissolved thing, come Judging whether polyvinyl alcohol is completely dissolved, if still having blocking undissolved thing of reuniting, continuing insulated and stirred, until no dough Till）；

2）Under stirring condition, progressively cooling down adds ethanol to 75 DEG C, then by proportioning, when ethanol adds, should adopt shower nozzle material feeding Device dispersion adds, and ensures reactor stirring simultaneously, prevents ethanol bulk deposition, causes in solution polyvinyl alcohol in ethanol In clear go out, lead to that white flock insoluble matter occurs；

3）Add glycerine by corresponding proportion, stir；

4）Finally under stirring, progressively press corresponding proportion and add the additives such as defoamer, preservative, dispersant, color crystalline substance（Add Plus thing can regardless of order）, stir.

5）Cooling, and contained with corresponding container, sealing, prevent from volatilizing.

Using method：

1）Brushing diaphragm：When needing the material surfaces such as rubber are protected, directly in printing on surface of rubber plate roller coating or brushing, Air-dried 4-8 hour, for area is larger or concaveconvex structure at can many brushings 1 time again after air-drying after primary glue, that is, Complete the protection to rubber.In brushing protection glue, rubber surface should clean, no greasy dirt, no ponding, in air drying process, Cleaning should be kept, be dried, forbid trampling and placing articles, after air-drying, one must not be torn up in its surface area water when there being diaphragm During angle, again spray glue at the place of tearing up or spray a small amount of water, air-dry.

2）Remove diaphragm：When protection work completes, when needing to remove diaphragm, finger can be used one jiao of protection zone Scrape and pinch, diaphragm is torn up one jiao, and progressively tears up along diaphragm, until monoblock diaphragm is all torn, such as tore up In journey, diaphragm has fracture, can restart to open tear in breaking part, and after the completion of tear, local does not tear the clean place of removing, Can be erased with rag after drinks.

Innovative point

Existing frequently-used diaphragm is usually the diaphragm of PE material, again making with black and white film and blue protection film in PE diaphragm Use frequency highest.But, the PE diaphragm on market is typically all to be used for flat board, uneven because special requirement has for surface Place, such as at door handle, PE film can not play a protective role.

In order to meet the use of various abnormal shape sheet materials, invention goes out a kind of new Type Protecting Film that can be now with the current, No matter printing on surface of rubber plate is any shape, may pass through and smears, and reaches the effect of perfect rubber-coated plate, for concaveconvex structure Place can brush several times more, so that the film coated effect after air-drying is more preferable.

Claims (1)

1. a kind of preparation method of the diaphragm of rubber slab is it is characterised in that be following steps：

1）By proportioning, water, polyvinyl alcohol are added inside reactor, heats and stir, in heating process, ensure polyvinyl alcohol not Deposition reaction bottom portion, treats that water temperature rises to more than 95 DEG C, is incubated 3-6 hour, is stirred continuously until that polyvinyl alcohol all dissolves；

2）Under stirring condition, progressively cooling down adds ethanol to 75 DEG C, then by proportioning, when ethanol adds, should adopt shower nozzle material feeding Device dispersion adds, and ensures reactor stirring simultaneously, prevents ethanol bulk deposition, causes in solution polyvinyl alcohol in ethanol In clear go out, lead to that white flock insoluble matter occurs；

3）Add glycerine by corresponding proportion, stir；

4）Finally under stirring, progressively press corresponding proportion and add defoamer, preservative, dispersant, color crystalline substance additive, stirring Uniformly；

5）Cooling, and contained with corresponding container, sealing, prevent from volatilizing.