CN104552721A

CN104552721A - Combined pressure-injection technology of silica gel and wood

Info

Publication number: CN104552721A
Application number: CN201310497737.4A
Authority: CN
Inventors: 黄思侨
Original assignee: GUANGDONG WOODSUN HOUSEWARE CO Ltd
Current assignee: GUANGDONG WOODSUN HOUSEWARE CO Ltd
Priority date: 2013-10-22
Filing date: 2013-10-22
Publication date: 2015-04-29

Abstract

The invention relates to a manufacturing technology for bonding wood and silica gel in a combined pressure-injection mode. The method specifically comprises the following steps: preparing wood in various planar shapes, then using an adhesive to bond and placing in an oven to roast for 5-10min and taking out (controlling temperature at 100 DEG C), wherein the type of the wood can be acacia mangium, beech, birch, oak, rubber wood timber and the like; placing weighed silica gel raw material and silica gel color master as well as a vulcanizing agent into an open mill to mix, wherein the mass proportion of the silica gel color master to the material is 1%-1.5%, and the proportion of the vulcanizing agent is 2-3%; after mixing, slicing and cutting mixed sizing material and coating the sizing material on a bonding groove of wood, and placing the wood in an acupuncture point of a die shown as figure; setting the temperature of a vulcanizing machine at 120-150 DEG C, setting pressure of the machine at 10-15MPa, combining the die, pressurizing, vulcanizing for 5-8min, and opening the die to take out the product at the moment; burring the product, grinding, polishing and detecting the product, then placing the product into the oven and roasting the product for 2h at 130 DEG C, removing residual peroxides after vulcanization of silica gel, and packaging after cooling.

Description

Silica gel and wood in conjunction with pressure injection technology

Technical field

The present invention relates to the combination of the treatment process of wood and the sulfuration process of silica gel, that is to say the combination technology of wood product and silica gel product, belong to the integrated mode of production, can manual operations be reduced and raise the efficiency and quality, utilize silica gel to increase the color of product by the technology of cryogenic vulcanization pressure injection at the natural colour not damaging wood product simultaneously.

Background technology

The pattern that the product that similar company on market combines for wood and silica gel all adopts wood part separately to produce with silicon gel part is always carried out, used high temperature before this, under 180 degree ~ about 200 degree conditions, silica gel is carried out, then by the mode of craft glue bonding wood and silica gel carried out bonding become an entirety.Such mode of production causes silica gel to follow wood in conjunction with insecure, and cause too greatly product attractive in appearance not also firm not in conjunction with gap, class reduces, and production efficiency is not high.

Summary of the invention

Bonding insecure with silica gel for solving wood, the problem that product quality is of low grade.We determine to study the combination technology of wood and silica gel, the directly composite molding on vacuum hydraulic board of wood and silica gel is made by the design of mould and the mode of employing cryogenic vulcanization, the mould of Specialty Design eliminate wood with silica gel in conjunction with gap, cryogenic vulcanization compound makes wood follow silica gel to combine closely, can not come off, and the high temperature of resistance to 150 degrees Celsius, product reaches the product standard of German LFGB Food Contact level simultaneously.

The core technology scheme of this project is: wood non-refractory, general silica gel curing temperature is at all more than 180 degrees Celsius, use general method to be put into by wood and to scald inside machine and even burn, so product on the market---just as some silica gel chopsticks are all adopt the mode that wood wraps up completely to carry out producing in order to avoid burn, constantly study through us, the 120 degrees Celsius of cryogenic vulcanization technology adopted can not destroy the fiber of wood, also can not produce the surface of wood and structure and change, so can directly wood be put in, thus it is bonding with the compacting between face with the face of silica gel to achieve wood, reach not only sulfuration silica gel but also do not scald the object of wood.

The pressure injection associated methods of silica gel and wood, its feature comprises the following steps:

A) wood dewatered drying aft-loaded airfoil is become the flat shape of various requirement, wood species can be Acacia, beech, birch, oak, rubber wood timber etc.Coat bonding agent with brush at the bonding groove of wood again, after putting into oven cooking cycle 5-10 minute, take out (control temperature 100 degree);

B) stirred by solid state si glue material rubber mixing machine device and add color look mother (red, yellow, blue, green, purple etc.), used silica gel look female is 1% ~ 1.5% with the mass ratio of solid state si glue material, and the ratio of vulcanizing agent is 2% ~ 3%, then is cut into the sheet of various encapsulate;

C) silica gel material being cut into sheet is wrapped in around wood;

D) vulcanizer set temperature is 120-150 degree Celsius, and machine pressure is set to 10-15Mpa, cure time 5-8 minute, and the product wrapped is put into mould acupuncture point, and then matched moulds extrusion forming takes out within the time set;

E) by silica gel burr partial demolition unnecessary for the product surface after shaping, then polishing, polishing, inspection;

F) again put into baking box high-temperature baking 2 hours by tearing the product behind limit open, temperature 130 degrees Celsius, after removing silica gel sulfuration the peroxide that remains, make product reach German LFGB Food Contact grade standard.

Described silica gel raw material are the solid organosilicon rubber of universal baking, belong to methyl vinyl silicone rubber, are applicable to compression molding.

Described bonding agent is UV curing type bonding agent, could need use through baking.

The silica gel look mother of described silica gel look mother for being modulated by special silicon virgin rubber and various toner and multiple auxiliary agent, painted for various silica gel product, is applicable to die press technology for forming.

Described silica gel vulcanizing agent, also claims two pairs five, for the compression molding of silica gel product.

The silica gel produced by pressure injection technology of the present invention and wood in conjunction with pressure injection goods, be by bonding agent, silica gel raw material are bonded together after curing securely with wood.Fibre structure due to wood has the gap of a lot of minute asperities injustice, silastic material is a kind of fluid state in the sulfidation of HTHP, these gaps can be filled up, and through the facilitation of bonding agent, silicon rubber raw material are shaping after curing, and wood closely bonds together.Silica gel and wood in conjunction with pressure injection goods, there is moisture resistance, high temperature resistant, shockproof, anti-skidding, heat insulation, good hand touch, nonpoisonous and tasteless etc. advantage performance, be the practical product of a kind of environmental protection.Use the product that this technology is produced, while not destroying the natural fiber surface of wood, utilize the colourful color of silica gel to increase the stereovision of product, deeply favor by foreign customers, and the plasticity of silica gel and wood is all very strong, can develop various shape according to customer demand, can be made into meal kitchen product, reach U.S. FDA food-grade examination criteria simultaneously, also can be made into various small stores, the product such as gift and bath articles, even can be made into the high art work appreciating grade.

Accompanying drawing explanation

The compression moulding die structural representation of a kind of square net heat pad that Fig. 1 is used for the present invention designs.

The wood heat wrapping silica gel is padded the schematic diagram be put in mould by Fig. 2.

Detailed description of the invention

Now come with reference to the accompanying drawings to be briefly described processing step of the present invention.

The wood material that we adopt has Acacia, beech, birch, oak, rubber wood timber etc.After sawing sheet, after the operations such as profiling, processing, frosted, oven dry, make various flat shape.The silica gel raw material weighed up and silica gel look mother are put into mill with vulcanizing agent to carry out mixing, and used silica gel look female is 1% ~ 1.5% with the mass ratio of material, and the ratio of vulcanizing agent is 2% ~ 3%.Mixing complete after, the sizing material refined was carried out sheet according to thickness requirement, cut.Wrapping on the bonding groove of wood with cutting the sizing material becoming sheet, being put in the acupuncture point of special mould, as Fig. 2.Be 120-150 degree Celsius by vulcanizer set temperature, machine pressure is set to 10-15Mpa, matched moulds press cure, and the time is 5-8 minute, and at this moment, product is taken out in die sinking.Shaping product is removed burr, carries out polishing, polishing, inspection, then product is put into baking box, toasts 2 hours by the temperature of 130 degrees Celsius, after the sulfuration of removing silica gel the peroxide that remains, after cooling on the skin oil put to product or can pack after spraying paint.

Claims

1. a silica gel and wood in conjunction with pressure injection technology.

2. silica gel and wood in conjunction with pressure injection technology, its feature comprises the following steps:

Wood dewatered drying aft-loaded airfoil is become the flat shape of various requirement, wood species can be Acacia, beech, birch, oak, rubber wood timber etc.

3. coat UV curing type bonding agent with brush at the bonding groove of wood again, after putting into oven cooking cycle 5-10 minute, take out (control temperature is 100 degree);

Stirred by solid state si glue material rubber mixing machine device and add vulcanizing agent and silica gel color look mother (red, yellow, blue, green, purple etc.), used silica gel look female is 1% ~ 1.5% with the mass ratio of material, and the ratio of vulcanizing agent is 2% ~ 3%, then is cut into the sheet of various encapsulate;

The silica gel material being cut into sheet is wrapped on the bonding groove around wood;

Vulcanizer set temperature is 120 ~ 150 degrees Celsius, and machine pressure is set to 10 ~ 15Mpa, and cure time 5 ~ 8 minutes, puts into mould acupuncture point the product wrapped, and then matched moulds extrusion forming takes out within the time set;

By silica gel burr partial demolition unnecessary for the product surface after shaping, then polishing, polishing, inspection;

Again put into baking box high-temperature baking 2 hours, temperature 130 degrees Celsius by tearing the product behind limit open, after removing silica gel sulfuration the peroxide that remains, make product reach German LFGB Food Contact grade standard.

4. silica gel according to claim 2 and wood in conjunction with pressure injection technology, it is characterized in that: coat UV curing type bonding agent at the bonding groove of wood, after putting into oven cooking cycle 5-10 minute, take out (control temperature is 100 degree).

5. silica gel according to claim 2 and wood in conjunction with pressure injection technology, it is characterized in that: during refining glue, vulcanizing agent used is Sulfur-Vapor of Lower Temperature agent, and model is F-40 and C-8.

6. silica gel according to claim 2 and wood in conjunction with pressure injection technology, it is characterized in that: used silica gel look female is 1% ~ 1.5% with the mass ratio of solid state si glue material, and the ratio of vulcanizing agent is 2% ~ 3%.

7. silica gel according to claim 2 and wood in conjunction with pressure injection technology, it is characterized in that: solid state si glue material is added vulcanizing agent and silica gel look mother refining good after, be cut into sheet.

8. silica gel according to claim 2 and wood in conjunction with pressure injection technology, it is characterized in that: described mould is the special die that silica gel and wood all can be put in, and wood does not all wrap up by silica gel, but bond together, can be the compacting between the face of any shape and face.

9. silica gel according to claim 2 and wood in conjunction with pressure injection technology, it is characterized in that: vulcanizer set temperature is 120 ~ 150 degrees Celsius, and machine pressure is set to 10 ~ 15Mpa, cure time 5 ~ 8 minutes.