PVC gloves are glove products with polyvinyl chloride as the main raw material, with anti-static properties, Class1000 clean room processing, high purity water and ultrasonic cleaning.Class1000 clean room cleaning/processing/packaging/warehousing. Gloves flat, no colour difference, no impurities, no smell, uniform colour, uniform quality, quality assurance – Class10000 PVC gloves for standard Class10000 dust-free clean room use.
Scope of application
1,High quality PVC material. 2,Universal for both hands, rolled wrist. 3,Unique post-processing technology, no skin irritation, allergy phenomenon. 4,Low dust and ionic content, vacuum clean packaging. 5,Suitable for clean room/clean room/purification workshop/semiconductor, hard disk manufacturing, precision optics, optical electronics, LCD/DVD LCD manufacturing, biomedicine, precision instruments, PCB printing and other industries. PVC gloves are widely used in sanitary inspections, food industry, chemical industry, electronics industry, pharmaceutical industry, paint and coating industry, printing and dyeing industry, agriculture, forestry, animal husbandry, and other industries for labour protection and family hygiene. Features
Features
PVC gloves are made of polyvinyl chloride by a special process. The gloves are allergen-free, powder-free, low dust generation, low ionic content, free of plasticisers, esters, silicone oils and other components, with strong chemical resistance, good dexterity and tactile sensation, easy and comfortable to wear, with anti-static properties, and can be used in dust-free environments.
Features: 1. Resistant to weak acid and alkali; 2. Low ionic content; 3. Good flexibility and touch feeling; 4. Suitable for production processes such as semiconductor, liquid crystal and hard disc.
Grading standard
Grade A product: no hole on the surface of the gloves (powdered PVC gloves) The amount of powder is uniform, no obvious powder, the colour is transparent milky white, no obvious ink spots, no impurities, the size and physical properties of all parts meet the requirements of customers.
Grade B products: slight stains, 3 small black dots (1mm ≤ diameter ≤ 2mm), or a large number of small black dots (diameter ≤ 1mm) (diameter > 5), deformation, impurities (diameter ≤ 1mm), slightly yellow in colour, serious nail prints, cracks, all parts of the dimensions and physical properties are not in line with customer requirements.
Scrap: broken holes, serious oil, serious yellowing, impurities (diameter>1mm), no rolled or broken edges, raking, scratching, tearing, cracking, sticking broken, residual material.
Self-repairing products: large amount of powder, large rolled edges, slightly dirty, slight internal sticking, small black oil powder on the fingertips, physical properties are in line with customer requirements.
There are ≤5 slight nail-printed gloves and ≤3 severe nail-printed gloves allowed in the gloves of Grade A products.
Basic raw materials
The basic raw materials of PVC gloves are; PVC paste resin, plasticiser (DOP\DINP), viscosity reducing agent (solvent oil), heat stabiliser, colouring agent, filler.
PVC Paste Resin
Polyvinyl chloride (polyvinylchloride) referred to as PVC is a vinyl chloride monomer (vinylchlo-ride monomer) referred to as VCM polymerisation of polymer compounds, polymerisation can be controlled by the reaction temperature and polymerisation of molecular weight regulator PVC paste resin Physical Properties Appearance: white powder molecular weight: 40,600 to 111600 Density: 1.35~1.45g/ml Apparent Density: 0.4~0.65g/ml Specific Heat Capacity (0~100℃): 1.045~1.463J/(g. ℃) Thermal Conductivity: 0.1626W/(m.k) Refractive Index: nD20=1.544 Refractive Index: nD20=1.544 Pellet Diameter: Compact (XJ) 30~100um Loose (SG) 60~150um Paste Resin 1.5~150um Paste Resin 1.5~150um Paste Resin 1.5~150um Paste Resin 1.5~150um Paste Resin 1.5~150um ~Paste resin 1.2~2um Softening point: 75~85 ℃ Thermal decomposition point: >100-120 ℃ starts to degrade hydrogen chloride Solubility: Insoluble in water, gasoline, alcohol, vinyl chloride. Soluble in ketones, esters and chlorinated hydrocarbon solvents. Toxicity: non-toxic, odourless
Plasticiser
Plasticisers are the largest auxiliary in modern plastics industry and play a decisive role in promoting the development of plastics industry, especially PVC industry. Where the resin can be evenly mixed, mixing does not occur when the chemical changes, but can reduce the glass transition temperature of the material and the melt viscosity of the plastic moulding process, and itself remains unchanged, or although the chemical changes but can be retained in the plastic products for a long time and can change some of the physical properties of the resin, with these properties of the liquid organic compounds or low-melting-point solids are known as plasticizers. Plasticisers can reduce the modulus of elasticity and tensile strength at break, increase elongation and elongation at break, improve flexibility, improve reversible bending strength, improve toughness and impact strength, reduce the glass transition temperature, expand the polymer at lower temperatures in the application of the type, improve the adhesion to a variety of substrates, improve or reduce the film’s sealing, improve lubrication and reduce friction, reduce static charging capacity, improve the surface gloss and appearance. Surface gloss and appearance, plasticizer is an organic substance that increases the plasticiser of plastics, improves the fluidity of the resin during moulding and processing, and makes the products flexible. Commonly used are phthalate esters such as dioctyl phthalate (DOP), dinonyl phthalate (DINP), didecyl phthalate (DIDP).
Heat stabilisers
Polyvinyl chloride (pvc) has no significant melting point of its own, starts to soften at 80 °C ~ 83 °C, and starts to flow when heated up to 180 °C. In > 120 ℃ above the beginning of thermal decomposition, so in not yet reached the flow and melting point when Hou has begun to decompose and gradually caramelised from yellow to black! In this way the polyvinyl chloride cannot be made into a product! This reaction of PVC is a chemical reaction, it is the reaction of releasing hydrogen chloride (HCl) after heating, according to this reaction, as long as we don’t let Hcl come out soon, we can prevent the product from turning yellow and scorching when processing. So heat stabiliser was born, its role is to capture the Hcl proposed to dehydrogen chloride reaction! Calcium and zinc composite stabilisers, due to the development of environmental protection and non-toxic, low-toxicity and efficient lead-free, cadmium-free caused by the country’s general attention. Calcium and zinc stabilisers are gradually expanding the market. Calcium-zinc composite stabilisers non-toxic and environmentally friendly price moderate
Viscosity Reducer
The so-called viscosity-reducing agent is a common name, that is, to reduce the viscosity of PVC paste resin material of a diluent. Its real identity for the ‘de-aromatic solvent oil’ according to the boiling range, solvent oil can be divided into three categories: low boiling point solvent oil, such as 6 # extraction solvent oil, boiling range of 60-90 ℃; boiling point solvent oil, such as rubber solvent oil, boiling range of 80-120 ℃; high-boiling point solvent oil, such as paint solvent oil, boiling range of 140-200 ℃.
Colouring agent
PVC can be dyed into various colours. Mostly use oil-soluble organic pigment and inorganic pigment, the dosage is about 0.01%-2% of resin. VI. Filler The main function is to reduce the cost, save the amount of PVC, and improve the performance. Commonly used fillers are calcium carbonate, clay, diatomaceous earth and so on.
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