CN102994027A - Phenolic resin adhesive - Google Patents

Abstract

The invention discloses a phenolic resin adhesive which is characterized by comprising the following raw materials in parts by weight: 95-100 parts of phenolic resin, 18-20 parts of polysiloxane, 2-3 parts of anti-aging agent TCY, 8-10 parts of tricresyl phosphate, 60-70 parts of ethanol, 15-25 parts of acetone, 8-10 parts of asbestos powder, 1-1.8 parts of silane coupling agent KH-550 and 3-5 parts of modified nanometer magnesia. As nano-zinc oxide is added into the phenolic resin adhesive, the produced adhesive has excellent flowability and storage stability, the production cost of the phenolic resins adhesive is reduced, the overall quality and efficacy of the adhesive are improved, and a plywood formed by compressing the adhesive has stronger bonding performance.

Description

A kind of phenolic resin adhesive

Technical field

The present invention relates generally to a kind of sizing agent, relates in particular to a kind of phenolic resin adhesive.

Background technology

Resol is to be formed by phenols and aldehyde condensation polymer, this sizing agent has the performances such as good heat-resisting, media-resistant, but the cured glue layer is crisp, the cure under pressure of need to heating, other polymer chemistry things commonly used improve performance, can broadened application, the phenolic resin adhesive of last modification is mainly used in bonding timber, bubble is washed one's hair plastics and other porous materials, also can be in order to make glued board.

Summary of the invention

The object of the invention just provides a kind of phenolic resin adhesive.

The present invention is achieved by the following technical solutions:

A kind of phenolic resin adhesive, it is comprised of the raw material of following weight parts:

Resol 95-100, organopolysiloxane 18-20, anti-aging agent TCY2-3, tritolyl phosphate 8-10, ethanol 60-70, acetone 15-25, asbestos powder 8-10, silane resin acceptor kh-550 1-1.8, modified Nano magnesium oxide 3-5;

The magnesian preparation method of described modified Nano is:

With the nano magnesia ultra-sonic dispersion in the dehydrated alcohol of 5-10 times of its quality, obtain dispersion liquid, then the dicumyl peroxide with its quality 3-5% adds in the above-mentioned dispersion liquid, back flow reaction is 1～2 hour under 80～90 ℃ of temperature, obtain the nano magnesia-alcohol suspension with the modification of reactive group after the reaction, then filter, centrifugation filtrate obtains modified Nano magnesium oxide.

A kind of preparation method of phenolic resin adhesive may further comprise the steps:

Resol, organopolysiloxane, anti-aging agent TCY, tritolyl phosphate, ethanol, acetone, asbestos powder, silane resin acceptor kh-550, the modified Nano magnesium oxide of above-mentioned weight part are mixed in the adding reactor, at 70-80 ℃ of insulation reaction 1-1.5 hour, be cooled to normal temperature, stir and namely get described phenolic resin adhesive.

Advantage of the present invention is:

The present invention is by adding modified nano zinc oxide so that the sizing agent of producing has good flowability and stability in storage, the sizing agent that the method is produced has reduced the production cost of resol class sizing agent, improve overall qualities and the effect of sizing agent, had stronger glue performance with the glued board of this sizing agent compression moulding.

Embodiment

Embodiment 1

A kind of phenolic resin adhesive, it is comprised of the raw material of following weight parts:

Resol 100, organopolysiloxane 20, anti-aging agent TCY3, tritolyl phosphate 10, ethanol 70, acetone 25, asbestos powder 10, silane resin acceptor kh-550 1.8, modified Nano magnesium oxide 5;

The magnesian preparation method of described modified Nano is:

With the nano magnesia ultra-sonic dispersion in the dehydrated alcohol of 10 times of its quality, obtain dispersion liquid, then the dicumyl peroxide with its quality 5% adds in the above-mentioned dispersion liquid, back flow reaction is 2 hours under 90 ℃ of temperature, obtain the nano magnesia-alcohol suspension with the modification of reactive group after the reaction, then filter, centrifugation filtrate obtains modified Nano magnesium oxide.

A kind of preparation method of phenolic resin adhesive may further comprise the steps:

Resol, organopolysiloxane, anti-aging agent TCY, tritolyl phosphate, ethanol, acetone, asbestos powder, silane resin acceptor kh-550, the modified Nano magnesium oxide of above-mentioned weight part are mixed in the adding reactor, 80 ℃ of insulation reaction 1.5 hours, be cooled to normal temperature, stir and namely get described phenolic resin adhesive.

Performance test:

Phenolic resin adhesive of the present invention is diluted with water to applying glue and the compacting test that 27wt% carries out the bamboo offset plate, and at 130-140 ℃, 20MPa is pressed into glued board under the condition of 1-1.5min/mm, and the technical indicator of sizing agent and the performance of glued board are:

The solid content of phenolic resin adhesive of the present invention is 51%, free phenol is 0.083%, viscosity/(25 ℃, be coated with-4 glasss, s) MOR for 28-35, glued board is 126MPa, Young's modulus is 9798 MPa.

Claims (2)

1. phenolic resin adhesive is characterized in that it is comprised of the raw material of following weight parts:

Resol 95-100, organopolysiloxane 18-20, anti-aging agent TCY2-3, tritolyl phosphate 8-10, ethanol 60-70, acetone 15-25, asbestos powder 8-10, silane resin acceptor kh-550 1-1.8, modified Nano magnesium oxide 3-5;

The magnesian preparation method of described modified Nano is:

With the nano magnesia ultra-sonic dispersion in the dehydrated alcohol of 5-10 times of its quality, obtain dispersion liquid, then the dicumyl peroxide with its quality 3-5% adds in the above-mentioned dispersion liquid, back flow reaction is 1～2 hour under 80～90 ℃ of temperature, obtain the nano magnesia-alcohol suspension with the modification of reactive group after the reaction, then filter, centrifugation filtrate obtains modified Nano magnesium oxide.

2. the preparation method of a phenolic resin adhesive as claimed in claim 1 is characterized in that may further comprise the steps:

Resol, organopolysiloxane, anti-aging agent TCY, tritolyl phosphate, ethanol, acetone, asbestos powder, silane resin acceptor kh-550, the modified Nano magnesium oxide of above-mentioned weight part are mixed in the adding reactor, at 70-80 ℃ of insulation reaction 1-1.5 hour, be cooled to normal temperature, stir and namely get described phenolic resin adhesive.