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Preparation method of tackifier as well as polyamideadhesion type mixed silicone rubber and preparation method of silicone rubber

A technology of mixing silicone rubber and tackifier, which is applied in the field of tackifier preparation, can solve problems such as easy separation and falling off of each other, poor bonding effect of silicone rubber and nylon, and difficulty in demoulding, so as to achieve low production cost, Conducive to environmental protection and clean production, the effect of good bonding performance

Inactive Publication Date: 2014-08-06
阳江市万丰实业有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the above-mentioned tackifier is used for addition-type solid mixing silicone rubber, the bonding effect between the prepared silicone rubber and nylon is not good, and it is easy to separate and fall off each other.
In addition, silicone rubber / nylon materials will have the problem of difficult release

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0017] A method for preparing a tackifier, comprising the following steps: mixing 70-87.5 parts by mass of hydrogen-containing silicone oil and 12.5-30 parts by mass of triallyl isocyanurate in 0.2-0.4 parts by mass of a platinum catalyst (chlorine Platinic acid complex) in the presence of sufficient reaction, vacuum devolatilization to constant weight after the reaction is complete.

[0018] Preferably, a method for preparing a tackifier comprises the following steps: adding a solution consisting of 70-87.5 parts by mass of hydrogen-containing silicone oil and 0.2-0.4 parts by mass of chloroplatinic acid complex into the reaction vessel, stirring, When the temperature of the solution is raised to 60-70°C, 12.5-30 parts by mass of triallyl isocyanurate is dropped into the solution to fully react, and after the reaction is completed, the vacuum devolatilizes to a constant weight to obtain a tackifier; , the stirring speed is 400-600 r / min, the dripping speed of triallyl isocyan...

Embodiment 1

[0024] Add 4g of triallyl isocyanurate to 100g of addition-type solid mixed silicone rubber for re-milling, and the prepared mixed silicone rubber and nylon 6 are attached to the mold. At 5MPa and 100°C, the silicone rubber It cannot be vulcanized for a long time (4~6h), and the performance indicators of the obtained silicone rubber / nylon 6 material are as follows: the adhesive shear strength of the silicone rubber / nylon 6 material is 0.82MPa.

Embodiment 2

[0026] Add 4 g of silicone oil with a hydrogen content of 0.8% to 100 g of addition-type solid mixed silicone rubber for remilling, and the prepared mixed silicone rubber is bonded to nylon 6 and placed in a mold, and vulcanized at 5 MPa and 100 ° C for 14 minutes to obtain Silicone rubber / nylon 6 material. The performance indicators are as follows: (1) Physical properties of silicone rubber: Shore A hardness is 61 degrees, tensile strength is 9.8MPa, tear strength is 20kN / m, and elongation at break is 316%; (2) Silicone rubber / nylon 6 After the material is released from the mold, the silicone rubber and nylon will separate and fall off, without interfacial adhesion. .

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Abstract

The invention discloses a preparation method of a tackifier. The preparation method comprises the steps as follows: hydrogen-containingsilicone oil and triallyl isocyanurate react fully in the presence of a platinum catalyst and are subjected to vacuum devolatilizationto the constant weight after the reaction is finished.Polyamideadhesion type mixed silicone rubber comprises raw materials as follows: the tackifier and addition type mixed solid silicone rubber. The preparation method of the polyamideadhesion type mixed silicone rubber comprises the step that the tackifier and the addition type mixed solid silicone rubber are mixed. The synthesized tackifier is environment-friendly and non-toxic, usage of a silane coupling agent containing a toxic solvent is reduced or avoided, and environmental protection and clean production are facilitated; the prepared polyamideadhesion type mixed silicone rubber has the better adhesion performance to a polyamide material after being vulcanized and is simple in technology and low in production cost.

Description

technical field [0001] The invention relates to a preparation method of a tackifier, a nylon adhesive type mixing silicone rubber and a preparation method thereof. Background technique [0002] Silicone / nylon kitchen utensils are made of silicone on the surface and nylon on the inside. They are environmentally friendly, chemically stable, high temperature resistant, soft, anti-fouling, non-stick, etc., and are increasingly favored by consumers. Addition solid mixed silicone rubber has a series of advantages: fast vulcanization speed, vulcanization temperature can be adjusted according to needs, basically no low molecular matter is released during vulcanization process, vulcanized rubber products are stable in size, non-toxic and tasteless, no secondary vulcanization is required, suitable for molding , extrusion and other molding processes. In the selection of silica gel, the current tendency is to choose addition-type solid mixed silicone rubber. However, due to the low su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/388C08L83/04C08L83/08
Inventor 黄春尧葛建芳李媛
Owner 阳江市万丰实业有限公司
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