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The history of pressure-sensitive adhesives

Pressure-sensitive tape originated in 1600 BC in the Han Dynasty period, in the Herbal Supplement, Huangdi Neijing, records the treatment of pain plaster cloth. It is the embryonic form of pressure-sensitive glue made of Chinese herbal medicine, turpentine, and animal glue. Later, it has been continued in the ointment products in the field of Chinese medicine. By the 8th century, ancient Egyptians discovered the use of pine balm and wax to make ointment and medicine.

The first patent for making medical plaster from natural rubber appeared in 1845. The industrial development of medical adhesives was first started by Johnson Brothers in the United States in 1870. After long-term research, they invented a medical adhesive for a long time in 1890. In 882, German pharmacist Beiersdorf added zinc oxide which could neutralize the acidity of rosin into natural rubber and rosin and made white zinc oxide plaster which was less irritating to the skin. This is the earliest modern pressure-sensitive adhesive product, so China and foreign countries are in the production of pressure-sensitive adhesive tape from the medical adhesive paste. It laid the foundation for today’s medical plaster. In the 1920s, the appearance of plastic pressure-sensitive adhesive tape for electrical insulation made pressure-sensitive adhesive products enter the field of industrial application.

However, it was not until R.G. Gray of 3M Company invented paper-based masking adhesive tape and transparent cellophane adhesive tape that the range of industrial applications of pressure-sensitive adhesive products was really expanded. Since then, two-sided adhesive tape, pressure-sensitive adhesive labels, adhesive sheets for printing, BOPP(directional tensile polypropylene) packaging tape, and many other uses of pressure-sensitive adhesive products have appeared. The pressure-sensitive adhesive materials used are also extended from natural rubber to various synthetic rubber, polyethylene ether, polyacrylate, silicone polymer and thermoplastic elastomer, and other synthetic materials.

Since the late 1950s, a series of basic theoretical issues such as the adhesion phenomenon, adhesion characteristics, and the relationship between the structure and performance of pressure-sensitive adhesives have been studied step by step, so that the development of pressure-sensitive adhesives and their products is gradually built on a solid foundation, especially after entering the 1960s, a variety of excellent performance acrylic pressure sensitive adhesive system development, The application range of pressure-sensitive adhesive products has been rapidly expanded, and the industry of pressure-sensitive adhesive and its products has also been developed at a high speed.

What is acrylic adhesive?

It is a two-component adhesive that provides excellent bonding strength and durability but is slightly lower than epoxy adhesives. However, they have a variety of characteristics that make them easier to use in many applications and production processes. These benefits include faster curing, higher resistance to oily or unbonded surfaces, and the ability to bond a wide range of materials, including almost all plastics. Newer acrylic adhesive formulations have room-temperature stability, and long shelf life and some have a lower odor than regular acrylic adhesives.

Acrylic adhesive is acrylic?

Acrylic means acrylic or acrylic in Chinese; acrylic means acrylic.

Acrylic resin, acrylic in English, may be called “acrylic coating”, while it may be transliterated into “acrylic coating” in Chinese. Acrylic resin and acrylic are actually the same material, but people call them different. Acrylic is a high-performance sports paint using a good grade original wear resistance and vivid lasting color. The outstanding performance of acrylic products brings the best sports results to your venue. Materials, it is 100% acrylic paint used for tennis courts and entertainment venues. It has unparalleled performance, our sports court at the same time to ensure the comfort of the player’s feet and the tennis rebound effect is consistent, you can change the texture of the sports court to obtain slow speed, medium speed, and fast three different speed court.

1. 100% acrylic resin composition, non-toxic, asbestos-free, in line with environmental protection requirements;
2. the sand particles are uniform, with special modulation;
3. good rebound force;
4. good anti-slip performance, athletes are not easy to slip;
5. suitable for concrete and asphalt foundations;
6. according to the customer needs to add a micro rubber layer, in order to increase the elasticity of the ground, and reduce fatigue.
7. super flatness, average elasticity, excellent anti-skid performance;
8. all-weather acrylic sports field material anti-UV, wear reduction, long durability, safe and comfortable;
9. stable color, no fading, no foaming, no cracking, no mildew, long life, durable more than 10 years, cheap, easy maintenance.
   

Are acrylic adhesives toxic?

Acrylate adhesives have a pungent odor, mainly caused by methyl methacrylate, methacrylic acid, or acrylic monomers, which have an impact on the user and the environment, but after drying are non-toxic.

Acrylate adhesive: Acrylate is widely used as an adhesive because of its strong hydrogen bonding properties. Its types include cyanoacrylate adhesives and reactive acrylic adhesives. With high strength, impact resistance, good weather resistance, oil surface bonding, ease to use, strong impact resistance, and shear force characteristics.

Acrylic adhesive is not toxic but has a stimulating smell, the workplace should be kept ventilated, not direct contact, please wear isolation gloves when operating.

Fireproof glue: Z732 flame retardant fireproof glue, polyurethane fireproof foam glue, expansion type fireproof glue high-quality hem glue – polyamide hot melt glue stick, polyamide glue: Bostik polyamide hot melt adhesive, polyamide hot melt adhesive [PA powder], high relative viscosity polyamide 6 gel, polyamide nylon plastic, new polyamide hot melt adhesive, polymer polyamide Baotu adhesive, PA6/PA66< polyamide > plastic

White latex: three-dimensional white latex, virtual bamboo white latex BC-03, indoor and outdoor decoration glue (including decoration No. 1, decoration No. 2), paper box glue, putty glue, picture frame glue, plywood glue, solid wood glue, 235 type latex, wood leather glue, wood glue, sticker glue, furniture glue, PVC board glue, all-purpose glue, peritoneal glue.

16g octadecyl alcohol, 3.5g maleic anhydride, and 155g toluene were mixed evenly and poured into a round-bottom flask; The monoester of octadecyl maleate was obtained at 120℃ for 4h. 7g octadecyl maleate monoester, 8.5g polyethylene glycol 600, 0.8 g p-toluene sulfonic acid, and 65g toluene was poured into a round-bottom flask, mixed well, and reacted at 95℃ for 12h to obtain amphiphilic oligomers.

Preparation of acrylate copolymer adhesive (1) Take 6g methyl methacrylate, 4g butyl acrylate, 65g toluene, 15g ethanol mixed evenly; Then 20g bisphenol A-glycyl glyceryl methacrylate resin (Bis-GMA) and 1g potassium persulfate were added in the stirring state, and the stirring temperature was 70℃ for 4h. (2) Add 8g amphiphilic oligomer, 0.6g glycol dimethacrylate, 1g ammonium persulfate, stir and react at 75℃ for 5h; (3) Add 0.1g ethylenediamine glyoxalic acid, 0.2g sodium hydrogen phosphate, 1g phosphate PM1510, 8g silicon dioxide, and stir until evenly dispersed; (4) In stirring state, vacuum, parental oligomer block modified acrylate copolymer adhesive.

Hardening adhesive: no shadow UV adhesive, light curing adhesive, Loctite 3011 UV structural curing adhesive, Loctite 5900 flat sealing silicone rubber,

5900 UV curing silicone rubber, Loctite UV curing glue 352, 352, Loctite glue.

Potting glue: room temperature potting glue, heating potting glue, double group potting glue, single group potting glue, multiple group potting glue

Silicone rubber: room temperature vulcanized silicone rubber, high-temperature vulcanized silicone rubber, Nanda silicone rubber 703 704 705, 704 silicone rubber, 703 silicon

Rubber 430, 705 room temperature vulcanized silicone rubber adhesive, 704 glue

Sealant: curtain wall glass joint sealant, building window sealant, concrete building joint sealant, mildew sealant, stone

Wood joint sealant, coated steel plate building sealant, building silicone sealant, building polyurethane sealant, building

Polysulfide sealant, building acrylic sealant, chlorosulfonated polyethylene building sealant.

Pressure sensitive adhesive: polyacrylate pressure sensitive adhesive, polyurethane acrylate photocuring pressure sensitive adhesive, kraft paper pressure sensitive adhesive tape, hot melt pressure sensitive

Adhesive, 3M pressure sensitive tape, acrylic pressure sensitive adhesive, 9137 acrylic pressure sensitive adhesive, HF-136 (water-based pressure sensitive adhesive), YM-036

Water based pressure sensitive adhesive

Hot melt adhesive: white hot melt adhesive, edge adhesive, transparent yellow rubber, semi-yellow rubber, hot melt rubber back adhesive, hot melt rubber, yellow rubber

Granules, milky white colloidal granules, white transparent colloidal granules, pearl cotton hot melt colloidal granules, transparent colloidal granules, beige.